3/4W, 2010 Low Resistance Chip Resistor 1. Scope This specification applies to 2.5mm x 5.0mm size 3/4W, fixed metal film chip resistors rectangular type for use in electronic equipment. 2. Type Designation RL2550 L (1) (2) Where - □□□□ □ (3) (4) (1) Series No. (2) L = L Type (3) Resistance value : For example - R005 = 5mΩ R050 = 50mΩ (4) Resistance tolerance F = ± 1% G = ± 2% J = ± 5% 3. Outline Designation and Marking 3-1 Outline Designation (1) (2) (3) (4) (5) (5) L (4) (3) R005 W Substrate Resistor Terminals Protection coat Marking Alumina 96% Ni alloy Sn (on Cu ) Heat resistive epoxy resin Epoxy resin Dimensions (mm) (2) Code Letter RL2550 t (Bottom View) a UNLESS OTHERWISE SPECIFIED TOLERANCES ON ﹕ X =± X.X =± X.XX = ± ANGLES ± HOLE DIA. ± a 5.0 ± 0.20 L (1) 2.5 ± 0.20 1.00 ± 0.15 (＞3mΩ) 0.80 ± 0.15 t (3mΩ) 0.95 ± 0.15 Figure 1. Construction and Dimensions W a DRAWN BY ﹕connie 4/3/13 DESIGNED BY ﹕ CHECKED BY ﹕ APPROVED BY ﹕ SCALE ﹕ X UNIT ﹕ X Engineering Spec. For 3/4W 2010 TITLE : The Low Resistance Chip Resistor 台達電子工業股份有限公司 Delta Electronics, Inc. THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF Delta Electronics, Inc. AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. SR550000N PAGE 1 OF 8 PAGE REV. A2 3-2 Marking Resistance value is marked on the top surface. Ex.) 5mΩ → R005 47mΩ → R047 4. Ratings 4-1 Specification Power Ratings* 3/4W Resistance Value 4 ~ 50mΩ Temperature Coefficient of Resistance (≤10mΩ) 100ppm/℃ (>10mΩ) 50ppm/℃ Resistance Tolerance ±1% , ± 2% , ±5% Insulation Resistance Over 100MΩ Maximum Working Voltage (V) ( P*R)1/2 Note * : RATED LOAD(%) Power ratings is based on continuous full load operation at rated ambient temperature of 70℃. For resistors operated at ambient temperature in excess of 70℃, the maximum load shall be derated in accordance with the following curve. 100 0 70 -55 125 AMBIENT TEMPERATURE(℃) Figure 2.：Power Temperature Derating Curve 4-2 Rated Voltage The rated voltage shall be determined by the following expression. V = P×R Where V：Rated voltage (V) R：Nominal resistance value (Ω) P：Rated dissipation (W) 4-3 Operation and Storage Temperature Range -55℃ to +125℃ UNLESS OTHERWISE SPECIFIED TOLERANCES ON ﹕ X =± X.X =± X.XX = ± ANGLES ± HOLE DIA. ± DRAWN BY ﹕connie 4/3/13 DESIGNED BY ﹕ CHECKED BY ﹕ APPROVED BY ﹕ SCALE ﹕ X UNIT ﹕ X Engineering Spec. For 3/4W 2010 TITLE : The Low Resistance Chip Resistor 台達電子工業股份有限公司 Delta Electronics, Inc. THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF Delta Electronics, Inc. AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. SR550000N PAGE 2 OF 8 PAGE REV. A2 5. Schematic Diagram. Measurement Point Measurement Point Schtemtic Diagram V R047 I UNLESS OTHERWISE SPECIFIED TOLERANCES ON ﹕ X =± X.X =± X.XX = ± ANGLES ± HOLE DIA. ± DRAWN BY ﹕connie 4/3/13 DESIGNED BY ﹕ CHECKED BY ﹕ APPROVED BY ﹕ SCALE ﹕ X UNIT ﹕ X Engineering Spec. For 3/4W 2010 TITLE : The Low Resistance Chip Resistor V I V Current terminal I Voltage terminal 台達電子工業股份有限公司 Delta Electronics, Inc. THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF Delta Electronics, Inc. AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. SR550000N PAGE 3 OF 8 PAGE REV. A2 6. Characteristics Test Item Condition of Test Requirements Short Time Overload 2.5 * rated voltage for 5 seconds Refer to JIS C 5201-1 4.13 ∆R : ± (0.5%+0.0005Ω) Without significant damage by flashover ( spark, arching ), burning or breakdown etc. Insulation Resistance The resistor shall be cramped in the metal block and tested , as shown below. Test voltage : 100 ± 15VDC for 1 minute Refer to JIS C 5201-1 4.6 Mounting condition G. Between Electrode and Protection Film 100MΩ or over Between Electrode and Substrate 1,000MΩ or over Voltage Proof The voltage : 100VAC (rms.) for 1 minute ∆R : ± (0.5%+0.0005Ω) Refer to JIS C 5201-1 4.7 Without damage by flashover, fire or breakdown, as shown below. Thermal Shock -55 ~125℃ 5 cycles, 15 min at each extreme condition Refer to JIS C 5201-1 4.19 ∆R : ± (1.0%+0.0005Ω) Without distinct damage in appearance Low Temperature Storage Kept at -55℃, 1,000 hours Refer to JIS C 5201-1 4.23.4 ∆R : ± (1.0%+0.0005Ω) Without distinct damage in appearance High Temperature Exposure Kept at 125℃ for 1,000 hours Refer to JIS C 5201-1 4.23.2 ∆R : ± (1.0%+0.0005Ω) Without distinct damage in appearance Solderability Temperature of Solder : 245 ± 5℃ Immersion Duration : 3 ± 0.5 second Refer to JIS C 5201-1 4.17 Uniform coating of solder cover minimum of 95% surface being immersed Resistance to Soldering Heat Dipped into solder at 270 ± 5℃ for 10 ± 1 seconds Refer to JIS C 5201-1 4.18 ∆R : ± (0.5%+0.0005Ω) Without distinct deformation in appearance UNLESS OTHERWISE SPECIFIED TOLERANCES ON ﹕ X =± X.X =± X.XX = ± ANGLES ± HOLE DIA. ± DRAWN BY ﹕connie 4/3/13 DESIGNED BY ﹕ CHECKED BY ﹕ APPROVED BY ﹕ SCALE ﹕ X UNIT ﹕ X Engineering Spec. For 3/4W 2010 TITLE : The Low Resistance Chip Resistor 台達電子工業股份有限公司 Delta Electronics, Inc. THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF Delta Electronics, Inc. AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. SR550000N PAGE 4 OF 8 PAGE REV. A2 Test Item Condition of Test Requirements Load Life Rated voltage for 1.5 hours followed by a pause 0.5 hour at 70 ± 2℃. Cycle repeated 1000 hours Refer to JIS C 5201-1 4.25 ∆R : ± (1.0%+0.0005Ω) Without distinct damage in appearance Damp Heat with Load 60 ± 2℃ with relative humidity 90% to 95%. D.C. rated voltage for 1.5 hours ON and 30 minutes OFF. Cycle repeated 1,000 hours Refer to JIS C 5201-1 4.24 ∆R : ± (1.0%+0.0005Ω) Without distinct damage in appearance Mechanical Shock 100 G’s for 6milliseconds. 5 pulses Refer to JIS C 5201-1 4.21 ∆R : ± (0.5%+0.0005Ω) Without mechanical damage such as break Bending Test Glass-Epoxy board thickness : 1.6mm Bending width : 2mm Between the fulcrums : 90mm Refer to JIS C 5201-1 4.33 ∆R : ±(0.5%+0.0005Ω) Without mechanical damage such as break UNLESS OTHERWISE SPECIFIED TOLERANCES ON ﹕ X =± X.X =± X.XX = ± ANGLES ± HOLE DIA. ± DRAWN BY ﹕connie 4/3/13 DESIGNED BY ﹕ CHECKED BY ﹕ APPROVED BY ﹕ SCALE ﹕ X UNIT ﹕ X Engineering Spec. For 3/4W 2010 TITLE : The Low Resistance Chip Resistor 台達電子工業股份有限公司 Delta Electronics, Inc. THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF Delta Electronics, Inc. AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. SR550000N PAGE 5 OF 8 PAGE REV. A2 7. Recommend Land Pattern VOLTAGE SENSE LINE 0.50mm LAND PATTERN SOLDER RESIST AREA D CURRENT LINE B' B A C A B B’ C D 3.1 2.75 1.4 7.0 3.05 Unit : mm UNLESS OTHERWISE SPECIFIED TOLERANCES ON ﹕ X =± X.X =± X.XX = ± ANGLES ± HOLE DIA. ± DRAWN BY ﹕connie 4/3/13 DESIGNED BY ﹕ CHECKED BY ﹕ APPROVED BY ﹕ SCALE ﹕ X UNIT ﹕ X Engineering Spec. For 3/4W 2010 TITLE : The Low Resistance Chip Resistor 台達電子工業股份有限公司 Delta Electronics, Inc. THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF Delta Electronics, Inc. AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. SR550000N PAGE 6 OF 8 PAGE REV. A2 8. Packaging 8-1 Dimensions 8-1-1 Tape packaging dimensions 1.55 ± 0.05 0.23±0.10 4.0 ± 0.10 1.75 ± 0.10 2.0 ± 0.05 5.50 ± 0.05 5.35 ± 0.10 12.0 ± 0.30 4.0 ± 0.10 1.05±0.10 2.80 ± 0.10 1.50±0.1 Pulling direction Unit : mm 8-1-2 Reel dimensions 13.0±0.5 4.0 0 +0 - 0 .5 2.0±0.5 178.0±2.0 60.2±0.5 13.2±1.5 16.0±0.2 Unit : mm UNLESS OTHERWISE SPECIFIED TOLERANCES ON ﹕ X =± X.X =± X.XX = ± ANGLES ± HOLE DIA. ± DRAWN BY ﹕connie 4/3/13 DESIGNED BY ﹕ CHECKED BY ﹕ APPROVED BY ﹕ SCALE ﹕ X UNIT ﹕ X Engineering Spec. For 3/4W 2010 TITLE : The Low Resistance Chip Resistor 台達電子工業股份有限公司 Delta Electronics, Inc. THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF Delta Electronics, Inc. AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. SR550000N PAGE 7 OF 8 PAGE REV. A2 8-2 Peel Strength of Top Cover Tape The peel speed shall be about 300mm/minute The peel force of top cover tape shall between 0.1 to 0.7N Top Cover Tape 165 ~ 180° 0.1 ~ 0.7N Carrier tape 8-3 Number of Taping 2,000 pieces / reel 8-4 Label marking The following items shall be marked on the reel. (1) Type designation (2) Quantity (3) Manufacturing date code (4) Manufacturer’s name (5) The country of origin UNLESS OTHERWISE SPECIFIED TOLERANCES ON ﹕ X =± X.X =± X.XX = ± ANGLES ± HOLE DIA. ± DRAWN BY ﹕connie 4/3/13 DESIGNED BY ﹕ CHECKED BY ﹕ APPROVED BY ﹕ SCALE ﹕ X UNIT ﹕ X Engineering Spec. For 3/4W 2010 TITLE : The Low Resistance Chip Resistor 台達電子工業股份有限公司 Delta Electronics, Inc. THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF Delta Electronics, Inc. AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DOCUMENT NO. SR550000N PAGE 8 OF 8 PAGE REV. A2