FEATURES...Sa matur Rs (C) 200 180 160 140 120 100 80 60 40 20 0 5W 1/2W, 1Ws 2W, 3Ws 3W, 5Ws 1/4W,...
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www.urt-resistors.com RoHS 1 03/2019 mof SERIES Metal Oxide Flame-Proof Resistors FEATURES • Excellent long-time stability • Complete flameproof construction UL–1412 • Wide resistance range: 1Ω~510KΩ • Controlled temperature coefficient • Resistance standard tolerance: ±5% (consult factory for ±2%, ±1%, ±0.5%) • Coating and marking resist Trichlorethylene, Freon , and other cleaning agents • Power rating dimensions: 1/8 5W POWER RATINGS DIMENSIONS STYLE DIMENSIONS (mm) STD Small L D H d 12.5 (0.125W) 4.0±0.5 1.7±0.5 26.5±1.0 0.38±0.05 25 (0.25W) 50s (0.5W) 6.3±0.5 2.3±0.3 26±1.0 0.41±0.05 50 (0.5W) 100s (1W) 9.0±0.5 3.2±0.5 25±1.0 0.48±0.05 100 (1W) 200s (2W) 11.5±1.0 4.5±0.5 24±1.0 0.55±0.05 200 (2W) 300s (3W) 15.5±1.0 5.0±0.5 23±1.0 0.70±0.03 300 (3W) 500s (5W) 17.5±1.0 6.0±0.5 25±1.0 0.70±0.03 500 (5W) 24.5±1.0 8.0±0.5 28±1.0 0.78±0.03 Insulation Coating D d H L Resistor Layer Trimming Line Color Code Electrode Cap Connection Lead Wire Ceramic Rod
Transcript of FEATURES...Sa matur Rs (C) 200 180 160 140 120 100 80 60 40 20 0 5W 1/2W, 1Ws 2W, 3Ws 3W, 5Ws 1/4W,...
www.urt-resistors.com
RoHS
103/2019
mof SERIESMetal Oxide Flame-Proof Resistors
FEATURES
• Excellentlong-timestability• CompleteflameproofconstructionUL–1412• Wideresistancerange:1Ω~510KΩ• Controlledtemperaturecoefficient• Resistancestandardtolerance:±5%(consultfactoryfor±2%,±1%,±0.5%)
• CoatingandmarkingresistTrichlorethylene,Freon,andothercleaningagents
• Powerratingdimensions:1/85W
POWER RATINGS DIMENSIONS
STYLE DIMENSIONS (mm)
STD Small L D H d
12.5 (0.125W) 4.0±0.5 1.7±0.5 26.5±1.0 0.38±0.05
25 (0.25W) 50s (0.5W) 6.3±0.5 2.3±0.3 26±1.0 0.41±0.05
50 (0.5W) 100s (1W) 9.0±0.5 3.2±0.5 25±1.0 0.48±0.05
100 (1W) 200s (2W) 11.5±1.0 4.5±0.5 24±1.0 0.55±0.05
200 (2W) 300s (3W) 15.5±1.0 5.0±0.5 23±1.0 0.70±0.03
300 (3W) 500s (5W) 17.5±1.0 6.0±0.5 25±1.0 0.70±0.03
500 (5W) 24.5±1.0 8.0±0.5 28±1.0 0.78±0.03
InsulationCoating
D d
H L
ResistorLayer TrimmingLine
ColorCode ElectrodeCap
ConnectionLeadWire
CeramicRod
www.urt-resistors.com
RoHS
203/2019
mof SERIESMetal Oxide Flame-Proof Resistors
ELECTRICAL CHARACTERISTICS
STYLE 12.5/25 50s 50 100s 100 200s 200 300s 300 500s 500
Max. Working Voltage 200V 250V 300V 350V 350V 350V 350V 500V 500V 500V 500V
Max. Overload Voltage 350V 400V 400V 400V 400V 400V 400V 600V 600V 800V 800V
Operating Temp. Range -55°C to +200°C
Temp. Coefficient ±250ppm/°C
Value Range 1Ω~510KΩ - E24 series
POWER GRAPH
Rate
d Lo
ad (%
)
Ambient temperature (°C)
100
80
60
40
20
0-60-300306090120150180210240
HOT-SPOT TEMPERATURE
Applied Load (%)
Surfa
ce te
mpe
ratu
re R
ise (°
C)
200180160140120100806040200
5W
1/2W, 1Ws
2W, 3Ws3W, 5Ws
1/4W, 1/2Ws
1W, 2Ws
020406080100
www.urt-resistors.com
RoHS
303/2019
mof SERIESMetal Oxide Flame-Proof Resistors
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE TEST TEST METHOD APPRAISE
SHORTTIMEOVERLOAD 2.5timesRCWVfor5seconds ±(0.5%+0.05Ω)
VOLTAGEPROOF InV-Blockfor60seconds ByType
PULSEOVERLOAD 4timesRCWVfor10000cycles(1sec.on-25secs.off) ±1.0%+0.05Ω
INSULATIONRESISTANCE InV-Block >1000M
LOADLIFE 70°CatRCWVfor1000hrs.(1.5hrs.on-0.5hrs.off) ±(1.5%+0.05Ω)
LOADLIFEINHUMIDITY 40±2°C90~95%RHatRCWVfor1000hrs. ±(5%+0.05Ω) (1.5hrs.on-0.5hrs.off)
SOLDERABILITY 260±5°Cfor3±0.5seconds 95%min.coverage
RESISTANCETOSOLVENT Trichroethanefor1min.withultrasonic Nodeteriorationof coatingsandmarkings
TERMINALSTRENGTH Directloadfor10sec.inthedirectionofftheterminalleads Tensile:≥2.5kg
ReferenceStandards:IEC60115-1StorageTemperature:25±3°C;Humidity<80%RHRatedcontinuousworkingvoltage(RCWV)=POWERRATING*RESISTANCEVALUE
PART NUMBER
Type
MOF
MOFMetalOxide
Power rating
1/4W
1/4W 1/2Ws 1/2W 1Ws 1/2W 2WS 1W 2Ws 2W 3Ws 3W 5Ws
Resistance
3K
1R 1Ω 10R 10Ω 100R 100Ω 1K2 1K2Ω
Packaging
TB
TB TapingBox TR TapingReel BU Bulk F F-TYPE M M-TYPE PANA PANA
J±5%
F±1%
Tolerance
J
