leaded resIsTOrs
Metal Film Resistors
Fusible Type
Normal & Miniature Style [ FRM Series ]
FeaTUres
Power Rating : 1/4W, 1/2W, 1W, 2W
Resistance tolerance : ±5%
FlameProof Silicone Coating : UL94V-0
Gray body color
The 5th color band is white to represent fusible resistors
POWer deraTING CUrVe
For resistors operated in ambient temperatures above 70°C , power rating
must be derated in accordance with the curve below.
70°C
Rated Load (%)
100
80
60
40
20
20
40
60
80
100
120 140
160
180
Ambient Temperature (°C)
FUsING CHaraCTerIsTICs
Fusing time within 30 seconds at 16 times of rated power
Fusing residual resistive value at least 100 times rated resistance
zdIMeNsIONs
sTYle
Normal
FRM-25
ød
H
L
øD
FRM-50
FRM100
FRM200
Miniature
FRM50S
FRM1WS
FRM2WS
FRM3WS
dIMeNsION
l
6.3±0.5
9.0±0.5
11.5±1.0
15.5±1.0
ød
2.4±0.2
3.3±0.3
4.5±0.5
5.0±0.5
H
28±2.0
26±2.0
35±2.0
33±2.0
ød
Unit : mm
0.6±0.05
0.6±0.05
0.8±0.05
0.8±0.05
Note :
eleCTrICal CHaraCTerIsTICs
sTYle
Power Rating at 70°C
Dielectric Withstanding Voltage
Temperature Coefficient
Short Time Overload
Insulation Resistance
Pulse Overload
Operating Temp. Range
Value Range
JIS-C-5202 5.7 in V-Block for 60 Seconds
JIS-C-5202 5.2 Room Temp. Add 100°C
TesT MeTHOd
FrM-25
1/4W
250V
FrM50s FrM-50 FrM1Ws FrM100
1/2W
250V
250V
1W
250V
350V
FrM2Ws
2W
350V
350V
FrM200
FrM3Ws
3W
350V
±200ppm/°C
JIS-C-5202 5.5 2.5 Times RCWV for 5 Seconds ±2.0%+0.05Ω
JIS-C-5202 5.6 in V-Block
JIS-C-5202 5.8
4 Times RCWV 10,000 Cycles
(1 Sec. on , 25 Sec. off )
>100MΩ
±1.0%+0.05Ω(for Normal Style)
±2.0%+0.05Ω(for Miniature Style)
-55°C to + 155°C
2.2Ω To 1KΩ for E24 Series
* Resistance range for standard resistance, below or over this resistance on request.
eNVIrONMeNTal CHaraCTerIsTICs
PerFOrMaNCe TesT
Terminal Strength
Resistance to Soldering Heat
Solderability
Resistance to Solvent
Temperature Cycling
Humidity
Load Life in Humidity
Load Life
Overload Flame Retardant
TesT MeTHOd
JIS-C-5202 6.1
JIS-C-5202 6.4
JIS-C-5202 6.5
JIS-C-5202 6.9
JIS-C-5202 7.4
JIS-C-5202 7.5
JIS-C-5202 7.9
Direct load for 10 Sec. in the Direction of the Terminal Leads
350°C ± 10°C for 3 ± 0.5 Seconds
235±5°C ± 5°C for 5 ± 0.5 Seconds
IPA for 1 Min. with Ultrasonic
-55°C➞Room
Temp.➞+155°C➞Room
Temp. for 5 Cycles
40±2°C, 90~95% RH for 1,000 Hrs.
40±2°C, 90~95% RH at RCWV for 1,000 Hrs.
(1.5 Hrs. on , 0.5 Hrs. off )
aPPraIse
≥2.5kg (24.5N)
±1.0%+0.05Ω
95% Min. Coverage
No Deterioration of
Coatings and Markings
±2.0%+0.05Ω
±5.0%+0.05Ω
±5.0%+0.05Ω
±5.0%+0.05Ω
No evidence of
flaming or arcing
JIS-C-5202 7.10 70°C at RCWV for 1,000 Hrs. (1.5 Hrs. on, 0.5 Hrs. off )
JIS-C-5202 7.12 4 Times RCW V for 1 minute
Power Rating x Resistance Value
* Rated Continuous Working Voltage (RCW V)=
