NICHIA STS-DA1-2578 <Cat.No.121005> NICHIA CORPORATION SPECIFICATIONS FOR UV LED NCSU275(T) ● Pb-free Reflow Soldering Application ● Built-in ESD Protection Device ● RoHS Compliant NICHIA STS-DA1-2578 <Cat.No.121005> SPECIFICATIONS (1) Absolute Maximum Ratings Symbol Absolute Maximum Rating Unit Forward Current Item IF 700 mA Pulse Forward Current IFP 1000 mA Allowable Reverse Current IR 85 mA Power Dissipation PD 2.87 W Operating Temperature Topr -10~85 °C Storage Temperature Tstg -40~100 °C Junction Temperature TJ 130 °C * Absolute Maximum Ratings at TS=25°C. * IFP conditions with pulse width ≤10ms and duty cycle ≤10%. (2) Initial Electrical/Optical Characteristics Item Symbol Condition Typ Max Unit VF IF=500mA 3.7 - V Radiant Flux Φe IF=500mA 370 - mW Peak Wavelength λp IF=500mA 405 - nm Forward Voltage VF IF=500mA 3.6 - V Radiant Flux Φe IF=500mA 360 - mW Peak Wavelength λp IF=500mA 395 - nm Forward Voltage VF IF=500mA 3.6 - V Radiant Flux Φe IF=500mA 350 - mW Peak Wavelength λp IF=500mA 385 - nm Spectrum Half Width Δλ IF=500mA 9.0 - nm Thermal Resistance RθJS - 9.3 10.5 °C/W Forward Voltage U405 U395 U385 * Characteristics at TS=25°C. * Radiant Flux value as per CIE 127:2007 standard. * RθJS is Thermal Resistance from junction to TS measuring point. * It is recommended to operate the LEDs at a current greater than 10% of the sorting current to stabilize the LED characteristics. 1 NICHIA STS-DA1-2578 <Cat.No.121005> RANKS Item Forward Voltage Radiant Flux Peak Wavelength Rank Min Max Unit V - 3.3 4.1 P6 510 605 P5 430 510 P4 360 430 P3 300 360 P2 255 300 P1 215 255 U405 400 410 U395 390 400 U385 380 390 mW nm * Ranking at TS=25°C. * Forward Voltage Tolerance: ±0.05V * Radiant Flux Tolerance: ±10% * Peak Wavelength Tolerance: ±3nm * LEDs from the above ranks will be shipped. The rank combination ratio per shipment will be decided by Nichia. Radiant Flux Ranks by Peak Wavelength Ranking by Radiant Flux Ranking by P1 P2 P3 P4 P5 P6 Peak Wavelength U405 U395 U385 2 NICHIA STS-DA1-2578 <Cat.No.121005> OUTLINE DIMENSIONS * 本製品はRoHS指令に適合しております。 This product complies with RoHS Directive. 管理番号 No. NCSU275 STS-DA7-3363 (単位 Unit:±0.2) mm) (単位 Unit: mm, 公差 Tolerance: 3.5 0.875 (2.8) (2.8) Cathode Mark Cathode K 3.2 0.8 1 3.5 0.275 項目 Item 内容 Description パッケージ材質 Package Materials セラミックス Ceramics 封止樹脂材質 Encapsulating Resin Materials シリコーン樹脂 Silicone Resin 電極材質 Electrodes Materials 金メッキ Au-plated 質量 Weight 0.037g(TYP) Anode A 保護素子 Protection Device 3 NICHIA STS-DA1-2578 <Cat.No.121005> SOLDERING • Recommended Reflow Soldering Condition(Lead-free Solder) 1 to 5°C per sec Pre-heat 180 to 200°C 260°C Max 10sec Max 60sec Max Above 220°C 120sec Max ● Recommended Soldering Pad Pattern 4.1 3.5 0.5 (単位 Unit: mm) * This LED is designed to be reflow soldered on to a PCB. If dip soldered or hand soldered, Nichia cannot guarantee its reliability. * Reflow soldering must not be performed more than twice. * Avoid rapid cooling. Ramp down the temperature gradually from the peak temperature. * Nitrogen reflow soldering is recommended. Air flow soldering conditions can cause optical degradation, caused by heat and/or atmosphere. * Since the silicone used in the encapsulating resin is soft, do not press on the encapsulant resin. Pressure can cause nicks, chip-outs, encapsulant delamination and deformation, and wire breaks, decreasing reliability. * Repairing should not be done after the LEDs have been soldered. It should be confirmed beforehand whether the characteristics of the LEDs will or will not be damaged by repairing. * When soldering, do not apply stress to the LED while the LED is hot. 4 NICHIA STS-DA1-2578 <Cat.No.121005> PACKAGING - BULK シリカゲルとともにICパックをアルミ防湿袋に入れ、熱シールにより封をします。 Anti-static IC packs are shipped with desiccants in heat-sealed moisture-proof bags. ICパック anti-static IC Pack bag シリカゲル Desiccants 管理番号 No. Nxxxxxxx STS-DA7-1108B ラベル Label UV LED TYPE Nxxxxxxx ******* LOT YMxxxx-RRR QTY. PCS RoHS 熱シール Seal NICHIA CORPORATION 491 OKA, KAMINAKA, ANAN, TOKUSHIMA, JAPAN 警告ラベル Warning and Explanatory Labels アルミ防湿袋 Moisture-proof bag LE LED 放射 D ビームを直接見たり触れたり UV LED LED LED RADIATION RADIATION AVOID EXPOSURE TO AVOID EXPOSURE TO BEAM ビームを直接見たり触れたり しないこと しないこと E クラス3B クラス3B LLED製品 D 製品 BEAM 3B T PRODUC CLAS 3B LED PRODUCT LED CLASS S アルミ防湿袋を並べて入れ、間隔にはクッション材を詰めます。 Moisture-proof bags are packed in cardboard boxes with shock absorbing materials to fill empty spaces. ラベル Label UV LED TYPE Nxxxxxxx ******* RANK RRR QTY. PCS RoHS NICHIA CORPORATION 491 OKA, KAMINAKA, ANAN, TOKUSHIMA, JAPAN Nichia LED * 客先型名を*******で示します。 客先型名が設定されていない場合は空白です。 ******* is the customer part number. If not provided, it will not be indicated on the label. * ロット表記方法についてはロット番号の項を 参照して下さい。 For details, see "LOT NUMBERING CODE" in this document. * 本製品はICパックに入れたのち、輸送の衝撃から保護するためダンボールで梱包します。 Products shipped in anti-static IC packs are packed in a moisture-proof bag. They are shipped in cardboard boxes to protect them from external forces during transportation. * 取り扱いに際して、落下させたり、強い衝撃を与えたりしますと、製品を損傷させる原因になりますので注意して下さい。 Do not drop or expose the box to external forces as it may damage the products. * ダンボールには防水加工がされておりませんので、梱包箱が水に濡れないよう注意して下さい。 Do not expose to water. The box is not water-resistant. * 輸送、運搬に際して弊社よりの梱包状態あるいは同等の梱包を行って下さい。 Using the original package material or equivalent in transit is recommended. 5 NICHIA STS-DA1-2578 <Cat.No.121005> TAPE AND REEL DIMENSIONS テーピング部 Tape 2±0.05 4±0.1 5.5±0.05 12+0.3 -0.1 Cathode Mark 0.2±0.05 (単位 Unit: mm) 3.85±0.1 8±0.1 1.75±0.1 Φ1.5+0.1 -0 Nxxx275x STS-DA7-3314 管理番号 No. Φ1.5+0.2 -0 1±0.1 エンボスキャリアテープ Embossed Carrier Tape 3.85±0.1 トレーラ部/リーダ部 Trailer and Leader トップカバーテープ Top Cover Tape 引き出し方向 Feed Direction トレーラ部最小160mm（空部） Trailer 160mm MIN(Empty Pockets) LED装着部 Loaded Pockets 引き出し部最小100mm（空部） Leader with Top Cover Tape 100mm MIN(Empty Pocket) リーダ部最小400mm Leader without Top Cover Tape 400mm MIN リール部 Reel 180+0 -3 15.4±1 13+1 -0 * 数量は1リールにつき 2000個入りです。 Reel Size: 2000pcs Φ * JIS C 0806電子部品テーピングに準拠しています。 ± 21 ラベル Label Φ 13 ± 0 .2 Φ60+1 -0 8 0. The tape packing method complies with JIS C 0806 (Packaging of Electronic Components on Continuous Tapes). 6 NICHIA STS-DA1-2578 <Cat.No.121005> PACKAGING - TAPE & REEL シリカゲルとともにリールをアルミ防湿袋に入れ、熱シールにより封をします。 Reels are shipped with desiccants in heat-sealed moisture-proof bags. シリカゲル Desiccants リール Reel 管理番号 No. Nxxxxxxx STS-DA7-1109B ラベル Label UV LED TYPE Nxxxxxxx ******* LOT YMxxxx-RRR QTY. PCS RoHS 熱シール Seal NICHIA CORPORATION 491 OKA, KAMINAKA, ANAN, TOKUSHIMA, JAPAN 警告ラベル Warning and Explanatory Labels アルミ防湿袋 Moisture-proof Bag LE LED 放射 D ビームを直接見たり触れたり UV LED LED LED RADIATION RADIATION AVOID EXPOSURE TO AVOID EXPOSURE TO BEAM ビームを直接見たり触れたり しないこと しないこと E クラス3B クラス3B LLED製品 D 製品 BEAM 3B T PRODUC CLAS 3B LED PRODUCT LED CLASS S アルミ防湿袋を並べて入れ、ダンボールで仕切ります。 Moisture-proof bags are packed in cardboard boxes with corrugated partitions. ラベル Label UV LED TYPE Nxxxxxxx ******* RANK RRR QTY. PCS RoHS NICHIA CORPORATION 491 OKA, KAMINAKA, ANAN, TOKUSHIMA, JAPAN Nichia LED * 客先型名を*******で示します。 客先型名が設定されていない場合は空白です。 ******* is the customer part number. If not provided, it will not be indicated on the label. * ロット表記方法についてはロット番号の項を 参照して下さい。 For details, see "LOT NUMBERING CODE" in this document. * 本製品はテーピングしたのち、輸送の衝撃から保護するためダンボールで梱包します。 Products shipped on tape and reel are packed in a moisture-proof bag. They are shipped in cardboard boxes to protect them from external forces during transportation. * 取り扱いに際して、落下させたり、強い衝撃を与えたりしますと、製品を損傷させる原因になりますので注意して下さい。 Do not drop or expose the box to external forces as it may damage the products. * ダンボールには防水加工がされておりませんので、梱包箱が水に濡れないよう注意して下さい。 Do not expose to water. The box is not water-resistant. * 輸送、運搬に際して弊社よりの梱包状態あるいは同等の梱包を行って下さい。 Using the original package material or equivalent in transit is recommended. 7 NICHIA STS-DA1-2578 <Cat.No.121005> LOT NUMBERING CODE Lot Number is presented by using the following alphanumeric code. YMxxxx - RRR Y - Year Year Y 2009 9 2010 A 2011 B 2012 C 2013 D 2014 E M - Month Month M Month M 1 1 7 7 2 2 8 8 3 3 9 9 4 4 10 A 5 5 11 B 6 6 12 C xxxx-Nichia's Product Number RRR-Ranking by Wavelength, Ranking by Radiant Flux 8 NICHIA STS-DA1-2578 <Cat.No.121005> DERATING CHARACTERISTICS 管理番号 No. 周囲温度-許容順電流特性 Ambient Temperature vs Allowable Forward Current Derating1 カソード側はんだ接合部温度-許容順電流特性 Solder Temperature(Cathode Side) vs Allowable Forward Cu rrent RθJA =37°C/W Derating2 1000 800 (29, 700) 許容順電流 600 400 (85, 310) 200 Allowable Forward Current(mA) 許容順電流 1000 Allowable Forward Current(mA) NCSU275 STS-DA7-3364 800 (85, 700) 600 400 200 0 0 0 20 40 60 80 100 120 0 20 40 60 80 100 周囲温度 カソード側はんだ接合部温度 Ambient Temperature(°C) Solder Temperature(Cathode Side)(°C) デューティー比-許容順電流特性 Duty Ratio vs Allowable Forward Current Duty 120 TA=25°C 許容順電流 Allowable Forward Current(mA) 10000 1000 700 100 1 10 100 デューティー比 Duty Ratio(%) 9 NICHIA STS-DA1-2578 <Cat.No.121005> OPTICAL CHARACTERISTICS * 本特性は参考です。 All characteristics shown are for reference only and are not guaranteed. 管理番号 No. NCSU275 STS-DA7-3365 発光スペクトル Spectrum T A=25°C IFP=500mA Spectrum 1.0 相対発光強度 Relative Emission Intensity(a.u.) 0.8 0.6 0.4 0.2 0.0 300 350 400 450 500 550 600 波長 Wavelength(nm) Directivity1 指向特性 Directivity T A=25°C IFP=500mA -20° -10° 0° 10° 20° 30° -30° 40° 放射角度 Radiation Angle -40° 50° -50° -60° 60° -70° 70° 80° -80° -90° 90° 1 0.5 0 0.5 1 相対放射強度 Relative Radiant * 本特性はピーク波長ランクU385に対応しています。 The graphs above show the characteristics for U385 LEDs of this product. 10 NICHIA STS-DA1-2578 <Cat.No.121005> OPTICAL CHARACTERISTICS * 本特性は参考です。 All characteristics shown are for reference only and are not guaranteed. 管理番号 No. NCSU275 STS-DA7-3457 発光スペクトル Spectrum T A=25°C IFP=500mA Spectrum 1.0 相対発光強度 Relative Emission Intensity(a.u.) 0.8 0.6 0.4 0.2 0.0 300 350 400 450 500 550 600 波長 Wavelength(nm) Directivity1 指向特性 Directivity T A=25°C IFP=500mA -20° -10° 0° 10° 20° 30° -30° 40° 放射角度 Radiation Angle -40° 50° -50° -60° 60° -70° 70° 80° -80° -90° 90° 1 0.5 0 0.5 1 相対放射強度 Relative Radiant * 本特性はピーク波長ランクU395に対応しています。 The graphs above show the characteristics for U395 LEDs of this product. 11 NICHIA STS-DA1-2578 <Cat.No.121005> OPTICAL CHARACTERISTICS * 本特性は参考です。 All characteristics shown are for reference only and are not guaranteed. NCSU275 STS-DA7-3458 管理番号 No. 発光スペクトル Spectrum T A=25°C IFP=500mA Spectrum 1.0 相対発光強度 Relative Emission Intensity(a.u.) 0.8 0.6 0.4 0.2 0.0 300 350 400 450 500 550 600 波長 Wavelength(nm) Directivity1 指向特性 Directivity T A=25°C IFP=500mA -20° -10° 0° 10° 20° 30° -30° 40° 放射角度 Radiation Angle -40° 50° -50° -60° 60° -70° 70° 80° -80° -90° 90° 1 0.5 0 0.5 1 相対放射強度 Relative Radiant * 本特性はピーク波長ランクU405に対応しています。 The graphs above show the characteristics for U405 LEDs of this product. 12 NICHIA STS-DA1-2578 <Cat.No.121005> FORWARD CURRENT CHARACTERISTICS / TEMPERATURE CHARACTERISTICS * 本特性は参考です。 All characteristics shown are for reference only and are not guaranteed. 順電圧-順電流特性 Forward Voltage vs Forward Current 管理番号 No. 周囲温度-順電圧特性 Ambient Temperature vs Forward Voltage VfIf T A=25°C 1000 NCSU275 STS-DA7-3366 TaVf IFP=500mA 4.5 500 順電圧 Forward Voltage(V) 順電流 Forward Current(mA) 4.0 100 3.5 3.0 10 2.5 2.5 3.0 3.5 4.0 4.5 -60 -40 -20 順電圧 Forward Voltage(V) 20 40 60 80 100 120 周囲温度 Ambient Temperature(°C) 周囲温度-相対放射束特性 順電流-相対放射束特性 Forward Current vs Relative Radiant Flu x Ambient Temperature vs Relative Radiant Flux IfIv T A=25°C TaIv IFP= 500mA 1.4 2.5 2.0 相対放射束 Relative Radiant Flux(a.u.) 相対放射束 Relative Radiant Flux(a.u.) 0 1.5 1.0 1.2 1.0 0.8 0.5 0.6 0.0 0 200 400 600 800 1000 1200 順電流 Forward Current(mA) -60 -40 -20 0 20 40 60 80 100 120 周囲温度 Ambient Temperature(°C) * 本特性はピーク波長ランクU385に対応しています。 The graphs above show the characteristics for U385 LEDs of this product. 13 NICHIA STS-DA1-2578 <Cat.No.121005> FORWARD CURRENT CHARACTERISTICS / TEMPERATURE CHARACTERISTICS * 本特性は参考です。 All characteristics shown are for reference only and are not guaranteed. 順電圧-順電流特性 Forward Voltage vs Forward Current 管理番号 No. 周囲温度-順電圧特性 Ambient Temperature vs Forward Voltage VfIf T A=25°C 1000 NCSU275 STS-DA7-3461 TaVf IFP=500mA 4.5 500 順電圧 Forward Voltage(V) 順電流 Forward Current(mA) 4.0 100 3.5 3.0 10 2.5 2.5 3.0 3.5 4.0 4.5 -60 -40 -20 順電圧 Forward Voltage(V) 20 40 60 80 100 120 周囲温度 Ambient Temperature(°C) 周囲温度-相対放射束特性 順電流-相対放射束特性 Forward Current vs Relative Radiant Flu x Ambient Temperature vs Relative Radiant Flux IfIv T A=25°C TaIv IFP= 500mA 1.4 2.5 2.0 相対放射束 Relative Radiant Flux(a.u.) 相対放射束 Relative Radiant Flux(a.u.) 0 1.5 1.0 1.2 1.0 0.8 0.5 0.6 0.0 0 200 400 600 800 1000 1200 順電流 Forward Current(mA) -60 -40 -20 0 20 40 60 80 100 120 周囲温度 Ambient Temperature(°C) * 本特性はピーク波長ランクU395に対応しています。 The graphs above show the characteristics for U395 LEDs of this product. 14 NICHIA STS-DA1-2578 <Cat.No.121005> FORWARD CURRENT CHARACTERISTICS / TEMPERATURE CHARACTERISTICS * 本特性は参考です。 All characteristics shown are for reference only and are not guaranteed. 順電圧-順電流特性 Forward Voltage vs Forward Current 管理番号 No. 周囲温度-順電圧特性 Ambient Temperature vs Forward Voltage VfIf T A=25°C 1000 NCSU275 STS-DA7-3462 TaVf IFP=500mA 4.5 500 順電圧 Forward Voltage(V) 順電流 Forward Current(mA) 4.0 100 3.5 3.0 10 2.5 2.5 3.0 3.5 4.0 4.5 -60 -40 -20 順電圧 Forward Voltage(V) 20 40 60 80 100 120 周囲温度 Ambient Temperature(°C) 周囲温度-相対放射束特性 順電流-相対放射束特性 Forward Current vs Relative Radiant Flu x Ambient Temperature vs Relative Radiant Flux IfIv T A=25°C TaIv IFP= 500mA 1.4 2.5 2.0 相対放射束 Relative Radiant Flux(a.u.) 相対放射束 Relative Radiant Flux(a.u.) 0 1.5 1.0 1.2 1.0 0.8 0.5 0.6 0.0 0 200 400 600 800 1000 1200 順電流 Forward Current(mA) -60 -40 -20 0 20 40 60 80 100 120 周囲温度 Ambient Temperature(°C) * 本特性はピーク波長ランクU405に対応しています。 The graphs above show the characteristics for U405 LEDs of this product. 15 NICHIA STS-DA1-2578 <Cat.No.121005> FORWARD CURRENT CHARACTERISTICS / TEMPERATURE CHARACTERISTICS * 本特性は参考です。 All characteristics shown are for reference only and are not guaranteed. 順電流-ピーク波長特性 Forward Current vs Peak Wavelength 管理番号 No. NCSU275 STS-DA7-3367 T A=25°C IfλD 391 ピーク波長 Peak Wavelength(nm) 389 387 385 383 381 379 10 100 1000 順電流 Forward Current(mA) 周囲温度-ピーク波長特性 Ambient Temperature vs Peak Wavelength IFP= 500mA TaλD 391 ピーク波長 Peak Wavelength(nm) 389 387 385 383 381 379 -60 -40 -20 0 20 40 60 80 100 120 周囲温度 Ambient Temperature(°C) * 本特性はピーク波長ランクU385に対応しています。 The graphs above show the characteristics for U385 LEDs of this product. 16 NICHIA STS-DA1-2578 <Cat.No.121005> FORWARD CURRENT CHARACTERISTICS / TEMPERATURE CHARACTERISTICS * 本特性は参考です。 All characteristics shown are for reference only and are not guaranteed. 順電流-ピーク波長特性 Forward Current vs Peak Wavelength 管理番号 No. NCSU275 STS-DA7-3459 T A=25°C IfλD 401 ピーク波長 Peak Wavelength(nm) 399 397 395 393 391 389 10 100 1000 順電流 Forward Current(mA) 周囲温度-ピーク波長特性 Ambient Temperature vs Peak Wavelength IFP= 500mA TaλD 401 ピーク波長 Peak Wavelength(nm) 399 397 395 393 391 389 -60 -40 -20 0 20 40 60 80 100 120 周囲温度 Ambient Temperature(°C) * 本特性はピーク波長ランクU395に対応しています。 The graphs above show the characteristics for U395 LEDs of this product. 17 NICHIA STS-DA1-2578 <Cat.No.121005> FORWARD CURRENT CHARACTERISTICS / TEMPERATURE CHARACTERISTICS * 本特性は参考です。 All characteristics shown are for reference only and are not guaranteed. 順電流-ピーク波長特性 Forward Current vs Peak Wavelength 管理番号 No. NCSU275 STS-DA7-3460 T A=25°C IfλD 411 ピーク波長 Peak Wavelength(nm) 409 407 405 403 401 399 10 100 1000 順電流 Forward Current(mA) 周囲温度-ピーク波長特性 Ambient Temperature vs Peak Wavelength IFP= 500mA TaλD 411 ピーク波長 Peak Wavelength(nm) 409 407 405 403 401 399 -60 -40 -20 0 20 40 60 80 100 120 周囲温度 Ambient Temperature(°C) * 本特性はピーク波長ランクU405に対応しています。 The graphs above show the characteristics for U405 LEDs of this product. 18 NICHIA STS-DA1-2578 <Cat.No.121005> RELIABILITY (1) Tests and Results Reference Test Test Test Conditions Standard Duration Failure Criteria # Units Failed/Tested Resistance to Tsld=260°C, 10sec, 2reflows Soldering Heat #1 0/10 100cycles #1 0/10 TA=100°C 1000hours #1 0/10 TA=-40°C 1000hours #1 0/10 TA=25°C, IF=500mA 1000hours #1 0/10 TA=25°C, IF=700mA 500hours #1 0/10 TA=85°C, IF=300mA 500hours #1 0/10 60°C, RH=90%, IF=300mA 500hours #1 0/10 TA=-10°C, IF=500mA 1000hours #1 0/10 48minutes #1 0/10 #1 0/10 (Reflow Soldering) Temperature Cycle JEITA ED-4701 -40°C(30min)~25°C(5min)~ 100 105 100°C(30min)~25°C(5min) High Temperature JEITA ED-4701 Storage 200 201 Low Temperature JEITA ED-4701 Storage 200 202 Room Temperature Operating Life Condition 1 Room Temperature Operating Life Condition 2 High Temperature Operating Life Temperature Humidity Operating Life Low Temperature Operating Life Vibration Electrostatic Discharges JEITA ED-4701 200m/s2, 100~2000~100Hz, 400 403 4cycles, 4min, each X, Y, Z JEITA ED-4701 HBM, 2kV, 1.5kΩ, 100pF, 3pulses, 300 304 alternately positive or negative NOTES: 1) RθJA≈37°C/W 2) Measurements are performed after allowing the LEDs to return to room temperature. (2) Failure Criteria Criteria # #1 Items Conditions Failure Criteria Forward Voltage(VF) IF=500mA >Initial value×1.1 Radiant Flux(ΦE) IF=500mA <Initial value×0.7 19 NICHIA STS-DA1-2578 <Cat.No.121005> CAUTIONS (1) Storage Conditions Storage Temperature Humidity Time Before Opening Aluminum Bag ≤30°C ≤90%RH Within 1 Year from Delivery Date After Opening Aluminum Bag ≤30°C ≤70%RH ≤168hours 65±5°C - ≥24hours Baking ● Product complies with JEDEC MSL 3 or equivalent. See IPC/JEDEC STD-020 for moisture-sensitivity details. ● Absorbed moisture in LED packages can vaporize and expand during soldering, which can cause interface delamination and result in optical performance degradation. Products are packed in moisture-proof aluminum bags to minimize moisture absorption during transportation and storage. Included silica gel desiccants change from blue to red if moisture had penetrated bags. ● After opening the moisture-proof aluminum bag, the products should go through the soldering process within the range of the conditions stated above. Unused remaining LEDs should be stored with silica gel desiccants in a hermetically sealed container, preferably the original moisture-proof bags for storage. ● After the “Period After Opening” storage time has been exceeded or silica gel desiccants are no longer blue, the products should be baked. Baking should only be done once. ● Although the leads or electrode pads (anode and cathode) of the product are plated with gold, prolonged exposure to a corrosive environment might cause the gold plated the leads or electrode pads to tarnish, and thus leading to difficulties in soldering. If unused LEDs remain, they must be stored in a hermetically sealed container. Nichia recommends using the original moisture-proof bag for storage. ● Do not use sulfur-containing materials in commercial products. Some materials, such as seals and adhesives, may contain sulfur. The contaminated plating of LEDs might cause an open circuit. Silicone rubber is recommended as a material for seals. Bear in mind, the use of silicones may lead to silicone contamination of electrical contacts inside the products, caused by low molecular weight volatile siloxane. ● To prevent water condensation, please avoid large temperature and humidity fluctuations for the storage conditions. (2) Directions for Use ● When designing a circuit, the current through each LED must not exceed the Absolute Maximum Rating. Operating at a constant current per LED is recommended. In case of operating at a constant voltage, Circuit B is recommended. If the LEDs are operated with constant voltage using Circuit A, the current through the LEDs may vary due to the variation in Forward Voltage characteristics of the LEDs. (A) (B) ... ... ● LEDs should be operated in forward bias. Driving circuits must not subject LEDs to either forward or reverse voltage while off. Continuous reverse voltage can cause migration and LED damage. ● It is recommended to operate the LEDs at a current greater than 10% of the sorting current to stabilize the LED characteristics. ● For outdoor use, necessary measures should be taken to prevent water, moisture and salt air damage. ● This LED also emits visible light. Please take notice of visible light spectrum, in case you use this LED as light source of sensors etc. 20 NICHIA STS-DA1-2578 <Cat.No.121005> (3) Handling Precautions ● Do not handle LEDs with bare hands, it may contaminate the LED surface and affect optical characteristics. In the worst case, catastrophic failure from excess pressure through wire-bond breaks and package damage may result. ● This product uses encapsulating resin that is very soft. Direct contact with the surface of the resin may cause damage to the resin; the application of force on the resin may cause the wire to break and/or cause the LED not to illuminate. When handling the LEDs with tweezers, make sure to avoid direct contact with the resin and that excessive force is not applied to the LEDs. ● Dropping the product may cause damage. ● Do not stack assembled PCBs together. Failure to comply can cause the resin portion of the product to be cut, chipped, delaminated and/or deformed. It may cause wire to break, leading to catastrophic failures. (4) Design Consideration ● PCB warpage after mounting the products onto a PCB can cause the package to break. The LED should be placed in a way to minimize the stress on the LEDs due to PCB bow and twist. ● The position and orientation of the LEDs affect how much mechanical stress is exerted on the LEDs placed near the score lines. The LED should be placed in a way to minimize the stress on the LEDs due to board flexing. ● Board separation must be performed using special jigs, not using hands. ● If an aluminum PCB is used, customer is advised to verity the PCB with the products before use. Thermal stress during use can cause the solder joints to crack. ● Part of the surface of the encapsulating resin may appear frosted or cloudy during use. This is the area where the material properties have changed due to the ultra-violet light. The appearance of the cloudy spots will not cause an adverse effect on the electrical/optical characteristics. However, ensure that there are no issues for the chosen application prior to use. ● When substances commonly found in ink adhere to the resin of this product, it may reduce the radiant flux and may change the material properties. Materials, such as dustproof glass, should be used to protect the LEDs. (5) Electrostatic Discharge (ESD) ● The products are sensitive to static electricity or surge voltage. ESD can damage a die and its reliability. When handling the products, the following measures against electrostatic discharge are strongly recommended: Eliminating the charge Grounded wrist strap, ESD footwear, clothes, and floors Grounded workstation equipment and tools ESD table/shelf mat made of conductive materials ● Proper grounding is required for all devices, equipment, and machinery used in product assembly. Surge protection should be considered when designing of commercial products. ● If tools or equipment contain insulating materials such as glass or plastic, the following measures against electrostatic discharge are strongly recommended: Dissipating static charge with conductive materials Preventing charge generation with moisture Neutralizing the charge with ionizers ● The customer is advised to check if the LEDs are damaged by ESD when performing the characteristics inspection of the LEDs in the application. Damage can be detected with a forward voltage measurement at low current (≤1mA). ● ESD damaged LEDs may have current flow at a low voltage. Failure Criteria: VF<2.0V at IF=0.5mA 21 NICHIA STS-DA1-2578 <Cat.No.121005> (6) Thermal Management ● Proper thermal management is an important when designing products with LEDs. LED die temperature is affected by PCB thermal resistance and LED spacing on the board. Please design products in a way that the LED die temperature does not exceed the maximum Junction Temperature (TJ). ● Drive current should be determined for the surrounding ambient temperature (TA) to dissipate the heat from the product. ● The following equations can be used to calculate the junction temperature of the products. 1) TJ=TA+RθJA･W 2) TJ=TS+RθJS･W *TJ=LED junction temperature: °C TA=Ambient temperature: °C TS=Soldering temperature (cathode side): °C RθJA=Thermal resistance from junction to ambient: °C/W RθJS=Thermal resistance from junction to TS measuring point: °C/W W=Input power(IF×VF): W Ts Point (7) Cleaning ● If required, isopropyl alcohol (IPA) should be used. Other solvents may cause premature failure to the LEDs due to the damage to the resin portion. The effects of such solvents should be verified prior to use. In addition, the use of CFCs such as Freon is heavily regulated. ● Ultrasonic cleaning is not recommended since it may have adverse effects on the LEDs depending on the ultrasonic power and how LED is assembled. If ultrasonic cleaning must be used, the customer is advised to make sure the LEDs will not be damaged prior to cleaning. (8) Eye Safety ● In 2006, the International Electrical Commission (IEC) published IEC 62471:2006 Photobiological safety of lamps and lamp systems, which added LEDs in its scope. On the other hand, the IEC 60825-1:2007 laser safety standard removed LEDs from its scope. However, please be advised that some countries and regions have adopted standards based on the IEC laser safety standard IEC 60825-1:20112001, which still includes LEDs in its scope. Most of Nichia's LEDs can be classified as belonging into either the Exempt Group or Risk Group 1. High-power LEDs, that emit light containing blue wavelengths, may be classified as Risk Group 2. Please proceed with caution when viewing directly any LEDs driven at high current, or viewing LEDs with optical instruments which may greatly increase the damages to your eyes. ● Viewing a flashing light may cause eye discomfort. When incorporating the LED into your product, please be careful to avoid adverse effects on the human body caused by light stimulation. ● The products are UV light LEDs, and radiate intense UV light during operation. Since UV light can be harmful to eyes, do NOT look directly into the UV light, even through an optical instrument. In case of the light reflection, UV protective glasses are required to use in order to avoid damage by the light. 22 NICHIA STS-DA1-2578 <Cat.No.121005> (9) Others ● The LEDs described in this brochure are intended to be used for ordinary electronic equipment (such as office equipment, communications equipment, measurement instruments and household appliances). Consult Nichia's sales staff in advance for information on the applications in which exceptional quality and reliability are required, particularly when the failure or malfunction of the LEDs may directly jeopardize life or health (such as for airplanes, aerospace, submersible repeaters, nuclear reactor control system, automobiles, traffic control equipment, life support systems and safety devices). ● The customer shall not reverse engineer by disassembling or analysis of the LEDs without having prior written consent from Nichia. When defective LEDs are found, the customer shall inform Nichia directly before disassembling or analysis. ● Both the customers and Nichia will agree on official specifications of supplied products before a customer's volume production. ● Specifications and appearance subject to change for improvement without notice. 23