TYN1012RG STMicroelectronics SCR (Transistor Outline, Vertical) In Stock
STMicroelectronics TYN1012RG is a single silicon-controlled rectifier (SCR) rated at 10 A average on-state current and 1200 V repetitive peak off-state voltage, in a TO-220AB package. RoHS compliant and available from authorized distributors with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- TYN1012RG Datasheet PDF
- Category
- SCR
- Price
- From $0.3650(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TYN1012RG?
- 1200 V repetitive peak off-state voltage (VDRM) with 200 V/µs critical dv/dt rating, providing robust protection against transient overvoltage in AC mains applications
- 10 A average on-state current with a sensitive 0.2 mA maximum gate trigger current enabling direct drive from low-power microcontroller or optocoupler outputs
- TO-220AB through-hole package with bolt-down tab allows easy heatsinking for continuous 10 A operation in AC power control and motor-drive circuits
- 30 mA maximum holding current and 1.3 V gate trigger voltage ensure reliable latching and release in phase-control dimmers and soft-start circuits
What is TYN1012RG used for?
The TYN1012RG is used in AC mains phase-control circuits for motor soft-starters, lamp dimmers, and heating element controllers where its 1200 V blocking capability and 10 A on-state rating handle 230 V or 400 V line voltages with margin. Its sensitive 0.2 mA gate trigger current allows direct drive from an optocoupler output in isolated mains-to-logic interfaces without a discrete gate driver stage. The TO-220AB package with integral heatsink tab suits industrial power-control boards, solid-state relay modules, and UPS crowbar protection circuits that dissipate several watts continuously.
What are the specifications of TYN1012RG?
| Factory Lead Time | 15Weeks |
| YTEOL | 6.43 |
| Case Connection | ANODE |
| Configuration | SINGLE |
| Critical Rate of Rise of Off-State Voltage-Min | 200V/us |
| DC Gate Trigger Current-Max | 0.2mA |
| DC Gate Trigger Voltage-Max | 1.3V |
| Holding Current-Max | 30mA |
| JEDEC-95 Code | TO-220AB |
| JESD-30 Code | R-PSFM-T3 |
| JESD-609 Code | e3 |
| Leakage Current-Max | 2mA |
| Non-Repetitive Pk On-state Cur | 146A |
| Number of Elements | 1 |
| On-state Current-Max | 8000A |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Qualification Status | Not Qualified |
| RMS On-state Current-Max | 12A |
| Repetitive Peak Off-state Voltage | 1000V |
| Repetitive Peak Reverse Voltage | 1000V |
| Surface Mount | NO |
| Terminal Finish | Matte Tin (Sn) - annealed |
| Terminal Form | THROUGH-HOLE |
| Terminal Position | SINGLE |
| Trigger Device Type | SCR |
| ## TYN1012RG Alternates Showing results | Image |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.30.00.80 |
| Country of Origin | Mainland China |
Where can I find the TYN1012RG datasheet?
TYN1012RG Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for TYN1012RG?
Compatible alternatives and drop-in replacements for TYN1012RG:
suggested
Frequently Asked Questions
What is the maximum repetitive off-state voltage the TYN1012RG can block, and why does this matter for 230 V AC mains designs?
The TYN1012RG is rated for a 1200 V repetitive peak off-state voltage (VDRM). A 230 V AC mains line has a peak voltage of approximately 325 V, and with transients the line voltage can spike to 600 V or more. The 1200 V VDRM provides a substantial safety margin — roughly 3.7× the nominal peak — ensuring the SCR does not trigger into conduction from transient overvoltages in dimmer and motor-control circuits.
How sensitive is the TYN1012RG gate, and can it be triggered directly from a microcontroller GPIO pin?
The TYN1012RG requires a maximum gate trigger current of only 0.2 mA and a gate trigger voltage of up to 1.3 V, making it one of the most sensitive thyristor families available. A 3.3 V GPIO can source well over 1 mA through a 1 kΩ series resistor, which exceeds the 0.2 mA minimum trigger threshold, so direct microcontroller drive is feasible with appropriate mains isolation such as an optocoupler between the logic and gate circuits.
At full 10 A load, how should the TYN1012RG be thermally managed in a TO-220AB mounting?
The TYN1012RG in TO-220AB has a junction-to-case thermal resistance of approximately 2°C/W. At 10 A average current with a 1.4 V on-state voltage, conduction losses are roughly 14 W. With a heatsink of 4°C/W and an ambient of 40°C, the junction temperature reaches approximately 40 + 14 × (2 + 4) = 124°C — just within the 125°C maximum. A lower thermal-resistance heatsink or thermal pad is recommended for continuous 10 A operation above 40°C ambient.
What is the critical dv/dt of the TYN1012RG and what circuit precaution prevents false triggering?
The TYN1012RG guarantees a minimum critical rate-of-rise of off-state voltage (dv/dt) of 200 V/µs. Fast voltage transients on AC mains exceeding this rate can trigger the SCR into conduction without a gate signal. A standard RC snubber network — typically 100 Ω in series with 10 nF across the SCR anode-cathode — limits dv/dt to safe levels and is recommended for all industrial mains applications to prevent spurious firing.
Related Guides
CSD87313DMS Synchronous Buck Power Stage Design Guide
Design a compact CSD87313DMS synchronous buck stage with practical guidance for loss, gate drive, PCB layout, EMI, thermal validation, and sourcing.
Aug 6, 2026
STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection
Choose STEF05SGR for 5 V overcurrent protection by checking current-limit margin, inrush, thermal loss, fault response, and sourcing.
Aug 6, 2026
C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC
Select C0402C103K3RACTU by voltage margin, X7R behavior, tolerance, 0402 assembly risk, and qualified alternatives.
Aug 4, 2026
STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security
Choose STM32H753VIT6 by evaluating memory architecture, LQFP-100 pin fit, connectivity, security, power, and sourcing tradeoffs.
Aug 4, 2026
Why Buy from FindMyChip
About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.0758 | $2.08 |
| 50+ | $0.3946 | $19.73 |
| 100+ | $0.3802 | $38.02 |
| 500+ | $0.3742 | $187.10 |
| 1000+ | $0.3700 | $370.00 |
| 2500+ | $0.3650 | $912.50 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”