MERITEK
Flame-Proof Fusible Resistors FRN Series
Superior quality fusible resistors, which are flameproof during
operation
These resistors fuse in less than 30 seconds at 16 times rated power
PART NUMBERING SYSTEMS
FRN 1W -103 J TR
Meritek Series
Power Rating
CODE ½W 1WS 1W 2WS 2W
0.5W 1W 1W 2W 2W
Resistance
First 2 digits are significant
3rd digit is multiplier
“R” indicates decimal value below 10 ohm
Tolerance
Code J
Tolerance (%) ± 5
TR: Tape & Reel
B: Bulk
DIMENSIONS
DERATING CURVE
STYLE DIMENSIONS (mm) LIMITING ELEMENT VOLTAGE
Normal Miniature L D d Normal Miniature
RESISTANCE RANGE
FRN1/4W FRN1/2WS 6.3±
0.5 2.3±
0.3 0.55±
0.03 200V 250V 4R7 ~1K
FRN1/2W FRN1WS 9.0±
0.5 3.2±
0.5 0.65±
0.03 250V 300V 1 ~1K
FRN1W FRN2WS 11.5±
1.0 4.5±
0.5 0.78±
0.03 300V 350V 1 ~1K
FRN2W FRN3WS 15.5±
1.0 5.0±
0.5 0.78±
0.03 350V 400V 1 ~1K
FUSING CHARACTERISTICSELECTRICAL CHARACTERISTICS
Temperature Coefficient ±
350ppm
Short time overload ±
(2%+0.05 )
Insulation resistance 1000M
Load life ±
(5%+0.05 )
Terminal Strength Tensile: 2.5kg
Solder ability 95% min overage
Dielectric withstanding voltage 500V
Operating temperature range -40oC to +155oC
Tolerance ±5%
Selection series E-24
Working voltage RP * at 70oC
Specifications are subject to change without notice. rev.6a