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1206W4J050KT5E

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UNI-ROYAL(Uniroyal Elec) Current Sense Resistors / Shunt Resistors, 1206. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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1206W4J050KT5E

UNI-ROYAL(Uniroyal Elec) · Current Sense Resistors / Shunt Resistors · 1206

1206W4J050KT5E from UNI-ROYAL(Uniroyal Elec), in a 1206. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 1 passive First terminal electrode of the 1206 chip resistor (1/4W, ±5%, max working voltage 200V, max overload voltage 400V); the part is non-polarized so either end may be used.
2 2 passive Second terminal electrode of the 1206 chip resistor (1/4W, ±5%, max working voltage 200V, max overload voltage 400V); the part is non-polarized so either end may be used.

Key specifications

Parameter Value
Manufacturer UNI-ROYAL(Uniroyal Elec)
Package 1206
Category Resistors
Pins 2

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Resistance tolerance (J code, ±5%) -5 5 % Part No. 7th code J = ±5% 2
Temperature coefficient -800 800 PPM/°C 0.03Ω＜R＜1Ω 6
Max. working voltage (1206) 200 V 5
Max. overload voltage (1206) 400 V 5
Dielectric withstanding voltage (1206) 500 V 5
Operating temperature -55 155 ℃ 5
Solderability coverage 95 % Solder at 245±3°C; dwell 2~3 seconds 6
Insulation resistance 1000 MΩ (100±15)V or dielectric withstanding voltage, 1 min 6
Short-time overload resistance change -2 2 % 2.5 times RCWV or Max. Overload Voltage whichever less, 5 seconds; ±2%,±5% class 6
Short-time overload resistance change (absolute term) -0.05 0.05 Ω 2.5 times RCWV or Max. Overload Voltage whichever less, 5 seconds; ±2%,±5% class 6
Rapid change of temperature resistance change -1 1 % 30 min at -55°C and 30 min at 155°C; 100 cycles; ±2%,±5% class 6
Rapid change of temperature resistance change (absolute term) -0.05 0.05 Ω 30 min at -55°C and 30 min at 155°C; 100 cycles; ±2%,±5% class 6
Soldering heat resistance change -1 1 % Dip in solder bath 260℃±5℃ for 10±1 seconds 6
Soldering heat resistance change (absolute term) -0.05 0.05 Ω Dip in solder bath 260℃±5℃ for 10±1 seconds 6
Terminal bending resistance change -1 1 % Twist of test board Y/X = 3/90 mm for 60 seconds 6
Terminal bending resistance change (absolute term) -0.05 0.05 Ω Twist of test board Y/X = 3/90 mm for 60 seconds 6
Humidity (steady state) resistance change -3 3 % 240 hours at 40±2℃, 90-95% RH; ±2%,±5% class 6
Humidity (steady state) resistance change (absolute term) -0.05 0.05 Ω 240 hours at 40±2℃, 90-95% RH; ±2%,±5% class 6
Load life in humidity resistance change -3 3 % 1000 hours (1.5 h ON, 0.5 h OFF) at RCWV, 40℃±2℃, 93%±3% RH; ±2%,±5% class 6
Load life in humidity resistance change (absolute term) -0.05 0.05 Ω 1000 hours (1.5 h ON, 0.5 h OFF) at RCWV, 40℃±2℃, 93%±3% RH; ±2%,±5% class 6
Load life resistance change -3 3 % 1000 hours (1.5 h ON, 0.5 h OFF) at RCWV, 70℃±2℃; ±2%,±5% class 6
Load life resistance change (absolute term) -0.05 0.05 Ω 1000 hours (1.5 h ON, 0.5 h OFF) at RCWV, 70℃±2℃; ±2%,±5% class 6
Low temperature storage resistance change -3 3 % IEC 60068-2-1 (Aa), lower limit temperature, 2 h; ±2%,±5% class 7
Low temperature storage resistance change (absolute term) -0.05 0.05 Ω IEC 60068-2-1 (Aa), lower limit temperature, 2 h; ±2%,±5% class 7
High temperature exposure resistance change -3 3 % MIL-STD-202 108A, upper limit temperature, 1000 h; ±2%,±5% class 7
High temperature exposure resistance change (absolute term) -0.05 0.05 Ω MIL-STD-202 108A, upper limit temperature, 1000 h; ±2%,±5% class 7
Nominal resistance (decoded from MPN) 0.5 Ω 2
Reflow peak temperature (Tp) 260 ℃ Recommended Pb-free reflow profile 7
Allowed re-flow times 2 times Recommended reflow profile 7

CAD (KiCad official)

  • Symbol: 1206W4J050KT5E
  • Footprint: Resistor_SMD:R_1206_3216Metric
  • 3D model: 1206 (KiCad packages3D, STEP)
  • 3D model files: 1206w4j050kt5e-etched.step / 1206w4j050kt5e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1206w4j050kt5e.step / 1206w4j050kt5e.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: UNI-ROYAL(Uniroyal Elec) datasheet (9 pp, sha256 ead41539e1d133bd, retrieved 2026-11-06, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF