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BT138

Public Made by Adom

by adom

JUXING Thyristors (SCR)/Modules, TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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BT138

JUXING · Thyristors (SCR)/Modules · TO-252

BT138 from JUXING, in a TO-252. 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 T1 passive Main terminal T1 of the triac (diagram shows T1 opposite T2); rated 10 A RMS on-state current, 600 V/800 V VDRM/VRRM.
2 T2 passive Main terminal T2 of the triac, brought out as the centre lead and the mounting tab; rated 10 A RMS on-state current, 600 V/800 V VDRM/VRRM.
3 G input Gate trigger input; IGT max 50 mA in quadrants I, II and III and 100 mA in quadrant IV (VD=12 V, RL=100 Ω), VGT max 1.5 V, peak gate current 4 A.

Key specifications

Parameter Value
Manufacturer JUXING
Package TO-252
Category Transistors/Thyristors
Pins 3

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Repetitive peak off-state voltage (600E variant) VDRM/VRRM 600 V 600E column 1
Repetitive peak off-state voltage (800E variant) VDRM/VRRM 800 V 800E column 1
RMS on-state current IT(RMS) 10 A full sine wave 1
Non repetitive surge peak on-state current ITSM 60 A full sine wave, Tj=25℃, t=20ms 1
Peak gate current IGM 4 A 1
I2t for fusing I2t 18 A2S t=10ms 1
Average gate power dissipation PG(AV) 0.5 W Tj=125℃ 1
Peak on-state voltage drop VTM 1.5 V ITM=12A 1
Repetitive rate of rise of on-state current after triggering dit/dt 100 A/µs after triggering 1
Junction temperature Tj -40 125 ℃ 1
Storage temperature Tstg -40 150 ℃ 1
Gate trigger current (quadrants I, II, III) IGT 50 mA VD=12V;RL=100Ω; quadrants Ⅰ Ⅱ Ⅲ 2
Gate trigger current (quadrant IV) IGT 100 mA VD=12V;RL=100Ω; quadrant Ⅳ 2
Gate trigger voltage (quadrants I, II, III) VGT 1.5 V VD=12V;RL=100Ω; quadrants Ⅰ Ⅱ Ⅲ 2
Non-triggering gate voltage VGD 0.2 V Tj=125℃ 2
Holding current IH 60 mA IT=0.5A 2
Thyristor holds up current (quadrants I, II, III) IL 60 mA IG=1.2IGT; quadrants Ⅰ Ⅱ Ⅲ 2
Thyristor holds up current (quadrant IV) IL 100 mA IG=1.2IGT; quadrant Ⅳ 2
Critical rise rate of off-state voltage dV/dt 500 V/µs VD=67%VDRM(max); Tj=125℃ 2
On state threshold voltage VTO 0.92 V Tj=125℃ 1

CAD (KiCad official)

  • Symbol: BT138
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252 (KiCad packages3D, STEP)
  • 3D model files: bt138-etched.step / bt138-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bt138.step / bt138.glb are the bare package body.

Provenance

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

  • Datasheet: JUXING datasheet (3 pp, sha256 81e439d655907bef, retrieved 2026-11-05, 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