Series UPR/UPSC High Precision Metal Film Resistors
Derating
|
Dimensions |
Dimensions in millimeter (inches) |
|
|
|
UPSC | UPR |
|
A |
7.50±0.20 |
10.50±0.30 |
|
|
(0.295±0.008) |
(0.413±0.012) |
|
B |
8.50±0.20 |
9.00±0.30 |
|
|
(0.335±0.008) |
(0.354±0.012) |
|
C |
2.50±0.20 |
4.00±0.30 |
|
|
(0.098±0.008) |
(0.157±0.012) |
|
D |
0.63±0.20 |
0.63±0.0.05 |
|
|
(0.025±0.008) |
(0.025±0.002) |
|
E |
3.81±0.38 |
7.62±0.38 |
|
|
(0.150±0.015) |
(0.300±0.015) |
|
F |
25±1 |
18±5 |
|
|
(0.98±0.04) |
(0.71±0.196) |
Technical and standard electrical specifications
|
Resistance value |
UPSC: 40 Ω ≤ 5 MΩ |
|
|
UPR: 10 Ω ≤ 5 MΩ |
|
Resistance tolerance |
±1 % standard |
|
|
tolerances to ± 0.01 % on special request |
|
Temperature coefficient |
±2 ppm/°C to ±25 ppm/°C |
|
Long-term stability |
better than ±0.05 % per 2,000 hours of operation |
|
Std. operating temperature |
-55°C to +85°C |
|
TC temperature range |
-10°C to +70°C (at +85°C ref. to +25°C) |
|
Overload |
6.25 times rated power for 5 seconds at voltage |
|
|
not to exceed 1.5 times maximum rated working |
|
|
voltage, ΔR less than 0.1 % + 0.01 Ω |
|
Load life |
2,000 hours at 125°C |
|
|
ΔR less than 0.5 % + 0.01 Ω |
|
Moisture resistance |
MIL-STD-202, method 106 |
|
|
ΔR less than 0.4 % + 0.01 Ω |
|
Thermal shock |
MIL-STD-202, method 107, Cond. B, |
|
|
ΔR less than 0.2 % + 0.01 Ω |
|
Insulation resistance |
> 10,000 MΩ at 250 V DC |
|
Low temperature operation |
ΔR less than 0.15 % + 0.01 Ω |
|
Dielectric withstanding voltage |
ΔR less than 0.15 % + 0.01 Ω |
|
Vibration |
ΔR less than 0.2 % + 0.01 Ω |
|
Shock |
ΔR less than 0.2 % + 0.01 Ω |
Specifications
|
Tests |
Conditions |
MIL-R-55182/9 |
Typical drifts |
| Power conditioning (108) | 100 hours/rated power at +125°C 90'/30' cycle | / |
± 0.02% |
| Thermal shock (107) | 5 cycles -65°C / +150°C |
± 0.2 % + 0.01 Ω |
|
| Short time overload | 6.25 times rated power / 5 sec |
|
|
| Low temperature storage | 1h stor. 45 min rated power at -65°C | ± 0.15 % + 0.01 Ω | / |
| and operation | 24h stor. 45 min rated power at -65°C | / | +0.01% |
| Terminal strength (211 | 2lb pull test | ± 0.2 % + 0.01 Ω | +0.01% |
| Dielectric withstanding voltage (301) | 300 V atmospheric 200 V / 100.000 ft. | ± 0.15 % + 0.01 Ω | +0.01% |
| Resist to soldering (210) | 260°C / 5 sec | ± 0.1 % + 0.01 Ω | +0.01% |
| Moisture resistance (106) | 10 days | ± 0.4% + 0.01 Ω | +0.01% |
| Shock | 10 shocks 100g 6ms sawtooth | ± 0.2 % + 0.01 Ω | +0.01% |
| Vibration (204) | 10 to 2000 Hz. 20g 8 hours | ± 0.2 % + 0.01 Ω | +0.01% |
| Load life (108) | 2000 hours at rated power at +25°C, +85°C or +125°C | ± 0.5 % + 0.01 Ω | +0.05% |
| 10,000 hours at rated power at +125°C | ± 2 % + 0.01 Ω | +0.2% | |
| Storage life | 10,000 hours no load at room conditions | / | +0.005% |
Ordering Information
| Type | ohmic | TCR | TOL |
| UPR | 20K | 25PPM |
0.1% |
