Rev.A2 Sheet 1 of 4
TRIGON
COMPONENTS
FEATURES
Free direction for mounting due to
cylindrical design.
High solderability due to specially
plated electrodes.
Electrodes strength is high er than flat
chip resistor.
Lower current noise than thick film flat
chip resistors.
RoHS Compliant.
RMASSeries
Anti-Surge MELF Resistors
ORDERING CODE
RMAS 103 J DS T
(1) (2) (3) (4) (5)
(1) Series Name
(2) Resistance
3-Digit IEC Code (E-24)
(3) Tolerance
J: ±5%, K: ±10%, M: ±20%
(4) Power Rating
A: 1/8W, B: 1/4W
C: 1/2W, D: 1W
E: 2W, F: 3W
(5) Packing Style
T: Taping
B: Bulk
※Please refer to complete
Ordering Code document (RMx-Ord)
for more ordering options.
STYLE L C D E S
1/8W 2.0±0.1 0.55±0.2 1.3±0.1 0.9±0.1 0.1±0.05
1/4W 3.5±0.2 0.7±0.2 1.45±0.1 2.1±0.1 0.15±0.1
1/2W 5.7±0.2 0.8±0.2 2.2±0.1 4.1±0.2 0.2±0.1
1W 8.5±0.3 1.7±0.2 3.0±0.3 5.1±0.2 0.3±0.1
2W 10.5±0.3 2.3±0.2 4.0±0.3 5.9±0.3 0.3±0.1
3W 14.5±0.3 2.3±0.2 4.5±0.3 9.9±0.3 0.3±0.1
DIMENSIONS (mm)
DERATING CURVE
SURFACE TEMP.
RISE CURVE
Rev.A2 Sheet 2 of 4
TRIGON
COMPONENTS
GENERAL SPECIFICATIONS
Type
Resistance
Tolerance
Max. Surge Voltage
1/8W
100V
1/4W
150V
1/2W
200V
1W
280V
2W
400V
3W
±5% or
±10% or
± 20%
500V
ENVIRONMENTAL CHARACTERISTICS
Performance Test Test Method Characteristics
Operating Temp. Range +55ºC ~ +155ºC
Temperature Coefficient JIS-C-5202; 5.2
±100ppm/ºC, ±200ppm/ºC,
±500ppm/ºC, ±1000ppm/ºC
Load Life in Humidity 40ºC ± 2ºC, 90%~95%RH, 1000h, 1.5h “on” / 0.5h “off” cycle ± 5%
Load Life 70ºC ± 2ºC, 1000h, 1.5h “on” / 0.5h “off” cycle ± 5%
Resistance to soldering
heat
260ºC ± 5ºC, 5 sec ± 1 sec ± 2%
Solderability 235ºC ± 5ºC, 2 sec ± 0.5 sec 90% Coverage / Min
Bending Test Holding point width 90mm, Bendi ng 5mm, 1 time ± 1%
Anti-Surge Characteristic
± 5%
Non-Combustibility
The resistors shall withstand Overloa d test in accordance With Article
UL-94.V-0 without producing a fire hazard.
RMASSeries
Anti-Surge MELF Resistors
Resistor