RLT370-10E TECHNICAL DATA UV LED 5 mm RLT370-10E is a 370nm UV LED that utilizes an UG11 filter, blocking visible wavelenght above 400nm. It emits pure UV light. Outline Dimensions Absolute Maximum Ratings (Ta=25°C) Item DC Forward Current Peak Pulse Forward Current *1 Allowable Reverse Current Power Dissipation Operating Temperature Storage Temperature Soldering Temperature *2 Symbol IF IFP IR PD TOP TSTG TSOL Value 25 80 85 100 -30 … +85 -40 … +100 265 Unit mA mA mA mW °C °C °C 1 * pulse width ≤ 10 msec. and duty ratio ≤ 1/10 2 * for 10 sec. Specifications (25°C) Item Electrical Specification Forward Current Forward Voltage *1 Optical Specification CW Output Power *2 Peak Wavelength *3 Spectrum Half Width Viewing Angle 1. 2. 3. Rank 4 Rank 5 Rank 6 Symbol Min. Typ. Max. Unit IF VF - 20 3.6 4.0 mA V PO PO PO λP λ φ 2.36 3.33 4.72 370 375 15 10 3.33 4.72 6.66 380 mW mW mW nm nm deg. measurement tolerance is ± 0.2 V measurement tolerance is ± 10% measurement tolerance is ± 3 nm 06.10.2011 RLT370-10E 1 of 6 Device Materials Item Glass Cap Lead Material Hard Glass Ni Plating Iron Alloy Au Plating Iron Alloy UG11 Filter transmission spectrum 06.10.2011 RLT370-10E 2 of 7 Typical Performance Curves Forward Voltage vs. Forward Current Forward Voltage vs. Relative Radiant Flux Duty Ratio vs. Allowable Forward Current Ambient Temperature vs. Forward Voltage Ambient Temp. vs. Relative Radiant Flux Ambient Temp. vs. Allowable Forward Current 06.10.2011 RLT370-10E 3 of 7 Spectrum Forward Current vs. Peak Wavelenght Ambient Temperature vs. Peak Wavelenght Directivity 06.10.2011 RLT370-10E 4 of 7 Reliability 1. Test items and result Test Item Standard Test Methode Note Number of Damaged Resostance to Soldering Heat JEITA ED-4701 300 302 Tsld=260 ± 5°C, 10sec 3mm from the base of the lead 1 time 0/50 Solderability JEITA ED-4701 303 303A Tsld=245 ± 5°C, 5sec using flux Lead-free Solder (Sn-3.0Ag-0.5CU) 1 time over 95% 0/50 Temperature Cycle JEITA ED-4701 100 105 -40°C ~ 25°C ~ 100°C ~ 25°C 30min. 5min. 30min. 5min. 100 cycles 0/50 Moisture Resistance Cyclic JEITA ED-4701 200 203 25°C ~ 65°C ~ -10°C 90%RH 24hrs./1 cycle 10 cycles 0/50 Terminal Strength (bending test) JEITA ED-4701 400 401 Load 5N (0.5kgf) 0°C ~ 90°C ~ 0°C bend 2 times Terminal Strength (pull test) JEITA ED-4701 400 401 Load 10N (1kgf) 10 ± 1 sec. High Temperature Storage JEITA ED-4701 200 201 Ta=100°C 1000 hrs. 0/50 Temperature Humidity Storage JEITA ED-4701 100 103 Ta=60°C, RH=90% 1000 hrs. 0/50 Low Temperature Storage JEITA ED-4701 200 202 Ta=-40°C 1000 hrs. 0/50 Steady State Operating Life IF=25mA, Ta=25°C 500 hrs. 0/50 Steady State Operating Life of High Humidity Heat IF=15mA, 60°C, RH=90% 500 hrs. 0/50 Steady State Operating Life of Low Temperature IF=20mA, Ta=-30°C 1000 hrs. 0/50 Test Conditions No noticeable damage No noticeable damage 0/50 0/50 2. Criteria for judging the damage Item Forward Voltage Optical Power Ouput Symbol Test Conditions VF PO IF=20mA IF=20mA Criteria for Judgment Min. Max. U.S.L x 1.1 L.S.L x 0.7 - * Note: 1. U.S.L: Upper Standard Level 2. L.S.L: Lower Standard Level 06.10.2011 RLT370-10E 5 of 7 Precaution for Use 1. Cautions • This device is a UV LED, which radiates intense UV light during operation. • DO NOT look directly into the UV light or look through the optical system. To prevent inadequate exposure of UV radiation, wearing UV protective glasses is recommended 2. Lead Forming • When forming leads, the leads should be bent at a point at least 3 mm from the base of the lead. DO NOT use the base of the leadframe as a fulcrum during lead forming. • Lead forming should be done before soldering. • DO NOT apply any bending stress to the base of the lead. The stress to the base may damage the LED’s characteristics or it may break the LEDs. • When mounted the LEDs onto the printed circuit board, the holes on the circuit board should be exactly aligned with the leads of LEDs. If the LEDs are mounted with stress at the leads, it causes deterioration of the lead and it will degrade the LEDs. 3. Soldering Conditions • Solder the LEDs no closer than 3 mm from the base of the lead. • Recommended soldering conditions: Dip Soldering Pre-Heat 120 °C Max. Pre-Heat Time 60 Seconds Max. Solder Bath Temperature 260 °C Max. Dipping Time 5 Seconds Max. No lower than 3 mm from Dipping Position the base of the epoxy bulb • • • • • • • • • Hand Soldering Temperature 350 °C Max. Soldering Time 3 Seconds Max. Position Not closer than 3 mm from the base of the epoxy bulb Although the recommended soldering conditions are specified in the above table, dip or hand soldering at the lowest possible temperature is desirable for the LEDs. A rapid-rate process is not recommended for cooling the LEDs down from the peak temperature. Dip soldering and hand soldering should not be done more than one time. Do not apply any stress to the lead particularly when heated. The LEDs must not be repositioned after soldering. After soldering the LEDs, the lead should be protected from mechanical shock or vibration until the LEDs return to room temperature. Direct soldering onto a PC board should be avoided. Mechanical stress to the resin may be caused from warping of the PC board or from the clinching and cutting of the lead frames. When it is absolutely necessary, the LEDs may be mounted in this fashion but the customer will assume responsibility for any problems. Direct soldering should only be done adter testing has confirmed that no damage, such as wire bond failure or resin deterioration, will occur. Those LEDs should not be soldered directly to double sided PC boards because the heat will deteriorate the epoxy resin. When it is necessary to clamp the LEDs to prevent soldering failure, it is important to minimize the mechanical stress on the LEDs. Cut the LED leads at room temperature. Cutting the leads at high temperature may cause the failure of the LEDs. 06.10.2011 RLT370-10E 6 of 7 4. Static Electricity • The LEDs are very sensitive to Static Electricity and surge voltage. So it is recommended that a wrist band or an anti-electrostatic glove be used when handling the LEDs. • All devices, equipment and machinery must be grounded properly. It is recommended that precautions should be taken against surge voltage to the equipment that mounts the LEDs. 5. Heat Generation • Thermal design of the end product is of paramount importance. Please consider the heat generation of the LED when making the system design. The coefficient of temperature increase per input electric power is affected by the thermal resistance of the circuit board and density of LED placement on the board, as well as other components. It is necessary to avoid intense heat generation and operate within the maximum ratings given in the specification. • The operating current should be desided after sonsidering the ambient maximum temperature of LEDs. 6. Storage • The LEDs should be stored at 30°C or less and 70%RH or less after being shippedand the sorage life limits are 3 months. If the LEDs are stored for 3 months or more, they can be stored for a year in a sealed container with nitrogen atmosphere and moisture absorbent material. • LED leads are gold okated Iron alloy. The gold surface may be affected by environments which contain corrosive substances. Please avoid conditions which may cause the LED to corrode, tarnish or discolor. This corrosion or discoloration may cause difficulty during soldering operations. It is recommended that the LEDs be used as soon as possible. • Please avoid rapid transistions in ambient temperature, especially in high humidity environments where condensation can occur. 06.10.2011 RLT370-10E 7 of 7