|
|
 |
FMF Flame-Proof Series |
| FMF Series Flame-Proof Type Metal Film Resistors |
METAL FILM RESISTORS
FLAME-PROOF TYPE FMF Series |
1/4W, 1/2W, 1W, 2W
FMF-25, FMF-50, FMF-100, FMF-200 |
| INTRODUCTION |
|
The FMF series flame-proof
type Metal Film Resistors are manufactured by vacuum deposit
metal film on high thermal conductivity ceramic rods, and are
coated with layers of gray color flame-proof lacquer.
These FMF flame-proof metal
film resistor is designed to replace the metal oxide resistors
and low power wire wound resistors, where when flame-proof and
small size is needed. |
|
 |
| FEATURES
|
- Power Rating: 0.25W, 0.5W, 1W, 2W.
- Resistance Tolerance:
?/span>1%
- T.C.R.: ?/span>50ppm/°C ,
?00ppm/ °C.
- Complete flameproof construction-UL 1412.
- Value range: 10Ω ~ 1MΩ
|
|
DIMENSIONS:
|
|
STYLE |
DIMENSION (mm) |
POWER RATING
(Watt) |
|
L |
ФD
|
H |
Фd
|
|
FMF-25 |
6.3 ?/span>0.5
|
2.3 ?/span>0.3
|
28 ?/span>2
|
0.6 ?/span>0.05
|
1/4W |
|
FMF-50 |
9.0 ?/span>0.5
|
3.2 ?/span>0.5
|
26 ?/span>2
|
0.6 ?/span>0.05
|
1/2W |
|
FMF-100 |
11.5 ?/span>1.0
|
4.5 ?/span>0.5
|
35 ?/span>2
|
0.8 ?/span>0.05
|
1W |
|
FMF-200 |
15.5 ?/span>1.0
|
5.0 ?/span>0.5
|
32
?/span>2 |
0.8 ?/span>0.05
|
2W |
|
|
ELECTRICAL CHARACTERISTICS
|
|
Style |
FMF-25 |
FMF-50 |
FMF-100 |
FMF-200 |
- |
- |
| Power Rating 70°C |
1/4W |
1/2W |
1W |
2W |
- |
- |
| Operating Temp. Range
|
-55?/span>C ~ +155?/span>C
|
| Max. Working Voltage |
250V |
350V |
500V |
500V |
- |
- |
| Max. Overload Voltage
|
500V |
700V |
1000V |
1000V |
- |
- |
| Dielectric Withstanding Voltage (AC)
|
500V |
700V |
1000V |
1000V |
- |
- |
| Max. Intermittence Overload Voltage
|
300V |
500V |
1000V |
1000V |
- |
- |
| Value Range |
10Ω~1MΩ |
| Temp. Coefficient (by Type)
|
?/span>50ppm,
?/span>100ppm |
|
| * The listed resistance range for standard resistance, below or over this resistance is on request.
|
|
ENVIRONMENTAL CHARACTERISTICS
|
|
PERFORMANCE TEST |
TEST METHOD |
APPRAISE |
| Short Time Overload
|
JIS-C-5202 5.5 : 2.5 times RCWV for 5 seconds
|
?/span>(0.25%+0.05 Ω)
|
|
Dielectric Withstanding V. |
JIS-C-5202 5.7 : in V-Block for 60 seconds
|
By Type |
| Temperature Coefficient
|
JIS-C-5202 5.2 : -55?/span>C ~+155?/span>C
|
By Type
|
|
Insulation Resistance |
JIS-C-5202 5.6 : in V-Block |
≥ 1000 MΩ |
| Solderability
|
JIS-C-5202 6.5 : 235?/span>C for 5?/span>0.5 seconds
|
95% min. coverage
|
|
Resistance to Solvent |
JIS-C-5202 6.9 : Trichroethance for 1 min. with ultrasonic
|
no deterioration |
| Terminal Strength
|
Direct load for 10 sec. In the direction of the terminal leads
|
≥2.5KG/24.5N |
|
Pulse Overload |
JIS-C-5202 5.8 : 4 times RCWV 10000 cycles(1 sec.on, 25 sec.off)
|
?/span>(0.5%+0.05
Ω) |
| Load Life in Humidity
|
JIS-C-5202 7.9 : 40?/span>2?/span>C, 90~95% RH at RCWV for 1000 hrs
(1.5hrs. on, 0.5 hrs. off) |
?/span>(1.5%+0.05 Ω)
|
|
Load Life |
JIS-C-5202 7.10 : 70?/span>C at RCWV for 1000hrs (1.5hrs.on, 0.5hrs.off)
|
?/span>(1.5%+0.05
Ω) |
| Temperature Cycling
|
JIS-C-5202 7.4 : 65?/span>→ room temp. →150?/span>C→ room temp. for 5 cycles. |
?/span>(0.25%+0.05 Ω)
|
|
Soldering Heat |
JIS-C-5202 6.4 : 350?/span>10?/span>C for 3?/span>0.5 seconds
|
?/span>(0.25%+0.05
Ω) |
|
| * The listed resistance range for standard resistance, below or over this resistance is on request.
|
 |
|
