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RS1208B-SW
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Shenzhen Haoruijia Elec Thyristors (SCR)/Modules, TO-220AB-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownRS1208B-SW
Shenzhen Haoruijia Elec · Thyristors (SCR)/Modules · TO-220AB-3
RS1208B-SW from Shenzhen Haoruijia Elec, in a TO-220AB-3. 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; the part is rated for 12 A IT(RMS) at Tc=105℃ and VDRM/VRRM of 600/800 V. |
| 2 | T2 | passive | Main terminal T2 of the triac, which is also connected to the non-insulated mounting tab; the part is rated for 12 A IT(RMS) at Tc=105℃. |
| 3 | Gate | input | Gate trigger input; IGT max is 5 mA for the SW grade (VD=12V, RL=30Ω, quadrants I-II-III), VGT is 1.3 V and VGM is 5 V at Tj=125℃. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen Haoruijia Elec |
| Package | TO-220AB-3 |
| 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 | VDRM | 600 | V | 1 | |||
| Repetitive peak reverse voltage | VRRM | 800 | V | 1 | |||
| RMS on-state current | IT(RMS) | 12 | A | Tc=105℃ | 1 | ||
| Surge on-state current | ITSM | 126 | A | sine wave 60Hz t=16.7ms | 1 | ||
| I2t value | I2t | 78 | A2s | tp=10ms | 1 | ||
| Critical rate of rise of on-state current | dI/dt | 50 | A/μs | IG=2IGT tr≤100ns F=120Hz | 1 | ||
| Peak gate current | IGM | 4 | A | Tj=125℃ tp=20µs | 1 | ||
| Peak gate voltage | VGM | 5 | V | Tj=125℃ | 1 | ||
| Peak gate power | PGM | 5 | W | Tj=125℃ | 1 | ||
| Average gate power | PG(AV) | 1 | W | Tj=125℃ | 1 | ||
| Junction temperature | Tj | 125 | ℃ | 1 | |||
| Storage temperature | Tstg | -40 | 150 | ℃ | 1 | ||
| Repetitive peak off-state / reverse current | IDRM/IRRM | 5 | µA | VDRM=VRRM Tj=25℃ | 1 | ||
| Repetitive peak off-state / reverse current | IDRM/IRRM | 1 | mA | VDRM=VRRM Tj=125℃ | 1 | ||
| On-state voltage | VTM | 1.55 | V | IT=17A tp=380µs | 1 | ||
| Holding current (SW column) | IH | 15 | mA | IGT=100mA | 1 | ||
| Latching current (SW column) | IL | 25 | mA | IG=1.2IGT Quadrants Ⅰ-Ⅱ-Ⅲ | 1 | ||
| Gate trigger current (SW column) | IGT | 5 | mA | VD=12V RL=30Ω Quadrants Ⅰ-Ⅱ-Ⅲ | 1 | ||
| Gate non-trigger voltage | VGD | 0.2 | V | VD=VDRM RL=3.3KΩ Tj=125℃ | 1 | ||
| Critical rate of rise of off-state voltage (SW column) | dV/dt | 40 | V/µs | VDM=67%VDRM Gate open Tj=125℃ | 1 | ||
| Critical rate of rise of commutating voltage | (dV/dt)C | 10 | V/µs | VDM=400V Tj=125℃ (dI/dt)C=1.8A/ms Gate open | 1 |
CAD (KiCad official)
- Symbol:
RS1208B-SW - Footprint:
Package_TO_SOT_THT:TO-220-3_Vertical - 3D model: TO-220AB-3 (KiCad packages3D, STEP)
- 3D model files:
rs1208b-sw-etched.step/rs1208b-sw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);rs1208b-sw.step/rs1208b-sw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen Haoruijia Elec datasheet (3 pp, sha256
e6edb8febd3fd5bc, retrieved 2026-10-14, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).