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| FEATURES | |
| Economical | 1/2W to 10W |
| Color Banded | Excellent Stability |
| 5% & 10% Tolerance | Welded Construction |
| High Temperature Flameproof Coating | Ceramic Core |
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| Type |
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EC Normal Size Dimensions (mm) | Resistance Range (ohms) | |||
| D±1 | L ± Max | H±3 | d +0.02 -0.05 |
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| EC 1/2 | 1/2 | 4 | 10 | 28 | 0.6 | 0.1 ~ 39 |
| EC1 | 1 | 5 | 12 | 28 | 0.7 | 0.1 ~ 50 |
| EC2 | 2 | 5.5 | 16 | 28 | 0.8 | 0.1 ~ 120 |
| EC3 | 3 | 6.5 | 17.5 | 28 | 0.8 | 0.1 ~ 200 |
| EC5 | 5 | 8.5 | 26 | 38 | 0.8 | 0.5 ~ 470 |
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7 | 8.5 | 32 | 38 | 0.8 | 0.5 ~ 470 |
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8 | 8.5 | 41 | 38 | 0.8 | 1 ~ 1.5K |
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9 | 8.5 | 54 | 38 | 0.8 | 1 ~ 1.5K |
| Type |
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ECS Small Size Dimensions (mm) | Resistance Range (ohms) | |||
| D±1 | L ± Max | H±3 | d +0.02 -0.05 |
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| ECS1 | 1 | 4 | 10 | 28 | 0.7 | 0.1 ~ 39 |
| ECS2 | 2 | 5 | 12 | 28 | 0.7 | 0.1 ~ 50 |
| ECS3 | 3 | 5.5 | 16 | 28 | 0.8 | 0.1 ~ 120 |
| ECS5 | 5 | 6.5 | 17.5 | 28 | 0.8 | 0.1 ~ 200 |
| ECS7 | 7 | 8.5 | 26 | 38 | 0.8 | 0.5 ~ 470 |
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8 | 8.5 | 32 | 38 | 0.8 | 0.5 ~ 470 |
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9 | 8.5 | 41 | 38 | 0.8 | 1 ~ 1.5K |
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10 | 8.5 | 54 | 38 | 0.8 | 1 ~ 1.5K |
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DERATING CURVE
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| Performance Specifications | ||
| Characterisitcs | Test Methods | Limits |
| Temperature coefficient JIS -C -5202 5.2 |
Natural resistance change per temp. degree centigrade R1: Resistance value at room temperature (t1) R2: Resistance value at room temp. +100°C (t2) Test pattern: Room temp., Room temp. +100°C |
±300PPM/°C <20  ± 400PPM/°C |
| Humidity (steady state) JIS - C - 5202 7.5 |
Temporary resistance change after a 240 hour exposure in a humidity test chamber controlled at 40°C ± 2°C and 90-95% relative humidity. | Resistance change rate is ± (3%+0.05) Max. with no evidence of mechanical damage. |
| Short-time overload JIS - C - 5202 5.5 |
Permanent resistance change after the application of a potential of 2.5 times RCWV for 5 seconds. | Resistance change rate is (2%+0.05) Max. with no evidence of mechanical damage. |
| Load life in humidity JIS - C - 5202 7.9 |
Resistance change after 1,000 hours operating at RCWW with duty cycle of 1.5 hours "ON", 0.5 hour "OFF" in a humidity test chamber controlled at 40°C ± 2°C and 90-95% relative humidity. | Resistance change rate is ± (1.5%+0.05) Max. with no evidence of mechanical damage. |
| Load life JIS - C - 5202 7.10 |
Permanent resistance change after 1,000 hours operating at RCWV, with duty cycle of 1.5 hours "ON", 0.5 hour "OFF" at 70°C ± 2°C ambient. | Resistance change rate is ± (5%+0.05) Max. with no evidence of mechanical damage |
| Terminal strength JIS - C - 5202 6.1 |
Direct load: Resistance to a 2.5 kg direct load for 10 seconds in the direction of the longitudinal axis of the terminal leads. Twist test: Terminal leads shall be bent through 90° at a point of about 6mm from the body of the resistor and shall be rotated through 360° about the original axis of the bent terminal in alternating direction for a total of 3 rotations. |
No evidence of mechanical damage |
| Resistance to soldering heat JIS - C - 5202 6.4 |
Permanent resistance change when leads immersed to 3.2 - 4.8 mm from the body in 350°C ± 10°C solder for 3 ± 0.5 sec. | Resistance change rate is ± (1%+0.05) Max. with no evidence of mechanical damage. |
| Solderability JIS - C - 5202 6.5 |
The area covered eith a new, smooth, clean, shiny and continuous surface free from concentrated pinholes. Test temp. of solder: 235°C ± 5°C Dwell time in solder: 3 +0.5 / -0 seconds |
95% coverage min. |
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use R for decimal. >100| TO ORDER PRODUCT |
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