TN4050HA-12GY STMicroelectronics SCR (Other) In Stock
The TN4050HA-12GY is a 1200 V, 40 A automotive-grade SCR thyristor from STMicroelectronics, housed in the compact D2PAK surface-mount package. It features AEC-Q101 qualification for reliable operation in harsh automotive environments. Available in stock with worldwide shipping.
- Manufacturer
- STMicroelectronics
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- TN4050HA-12GY Datasheet PDF
- Category
- SCR
- Price
- From $1.2210(MOQ 1000)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 1200 V blocking voltage rated for high-voltage automotive power circuits
- 40 A RMS on-state current in a compact D2PAK surface-mount package
- AEC-Q101 automotive qualified for reliable operation across -40°C to 125°C temperature range
- SCR thyristor trigger type enabling latching control in motor drive and rectifier designs
Applications
The TN4050HA-12GY is suited for automotive power management applications such as battery disconnect circuits, alternator field control, and motor-drive rectifiers operating at up to 1200 V. Its AEC-Q101 rating makes it a reliable choice in engine control units (ECUs) and 48 V mild-hybrid systems where robust thyristor switching is required. The D2PAK package simplifies PCB integration in space-constrained under-hood electronics.
Specifications
| Factory Lead Time | 15Weeks |
| Trigger Device Type | SCR |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Mainland China |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TN4050HA-12GY:
Frequently Asked Questions
What are the key voltage and current ratings of the TN4050HA-12GY?
The TN4050HA-12GY is rated for a 1200 V repetitive peak off-state voltage and a 40 A RMS on-state current, making it suitable for high-power automotive rectification and switching applications that demand wide voltage headroom.
Which automotive systems benefit most from the TN4050HA-12GY thyristor?
This SCR is well-matched for 48 V mild-hybrid powertrains, alternator rectifier bridges, and battery management disconnect circuits where the combination of 1200 V blocking voltage and 40 A current handling reduces component count and simplifies thermal design.
How does the D2PAK package affect PCB layout for the TN4050HA-12GY?
The D2PAK (TO-263) package provides a large exposed metal tab that acts as a heat spreader, enabling direct soldering to a PCB copper pour to achieve thermal resistance values below 2 °C/W without an external heatsink in many automotive designs.
Is the TN4050HA-12GY qualified for automotive-grade reliability requirements?
Yes, the TN4050HA-12GY meets AEC-Q101 qualification standards, covering operating temperatures from -40°C to 125°C and ensuring long-term reliability under automotive vibration, thermal cycling, and humidity stress conditions required by Tier-1 suppliers.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 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 |
|---|---|---|
| 1000+ | $1.4946 | $1494.57 |
| 4000+ | $1.2336 | $4934.48 |
| 8000+ | $1.2273 | $9818.64 |
| 16000+ | $1.2210 | $19536.64 |
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.”