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
What are the key features of TN4050HA-12GY?
- 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
What is TN4050HA-12GY used for?
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.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| Country of Origin | Mainland China |
Where can I find the TN4050HA-12GY datasheet?
TN4050HA-12GY Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for TN4050HA-12GY?
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.
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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 |
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