Non-Flame Fusible Metal Film
Power Resistors
The FPR Nonflame Fusible Metal Film Resistors were designed to limit thermal surge and resulting circuit damage due to excessive voltage. FPR Resistors provide reliable and accurate blow characteristics. The FPR resistors fail in an open mode. The resistors are available in ohmic values from .22Ω to 100KΩ, and wattage sizes from 1/2 to 3 watts.
Various telephone power line and tip & ring circuits utilize the FPR resistor to protect sensitive parts from lightning strike surges. Other circuits that would benefit from these fusible resistors are inputs that may be exposed to line voltage faults or power supplies that need current limiting with a safe, nonflame failure mode. Since each circuit has different and custom requirements, KRL/Bantry will work with your engineering staff to help choose the correct part for your application.
FEATURES:
- Small package size
- Noncombustible insulating coating
- Coating resists freon cleaning solvents
- Temperature coefficients less than ±200 PPM
- Uniform fusing characteristics
- Standard tolerance ±5%
- RoHS compliant
POWER |
FUSING TIME |
|
|---|---|---|
TYPICAL |
MAXIMUM |
|
16 X WATTAGE (W) |
30 SEC. |
1 MIN. |
20 X W |
20 SEC. |
40 SEC. |
24 X W |
10 SEC. |
30 SEC. |
28 X W |
8 SEC. |
20 SEC. |
32 X W |
5 SEC. |
15 SEC. |
TYPE |
L ± .04 |
D ± .024 |
H ± .25 |
LEAD AWG |
RESISTANCE |
|---|---|---|---|---|---|
FPR-1/2W |
.276 |
.104 |
1.250 |
23 |
.22Ω-100KΩ |
FPR-3/4W |
.360 |
.120 |
1.250 |
22 |
.22Ω-100KΩ |
FPR-1W |
.360 |
.160 |
1.250 |
22 |
.22Ω-100KΩ |
FPR-2W |
.450 |
.180 |
1.250 |
20 |
.3Ω-100KΩ |
FPR-3W |
.620 |
.220 |
1.250 |
20 |
.3Ω-100KΩ |