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STMicroelectronics TN4050HP-12L2Y
- Part No.:
- TN4050HP-12L2Y
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Datasheet:
-
TN4050HP-12L2Y.pdf
- Description:
- 1200 V, 40 A AUTOMOTIVE GRADE AE
- Quantity:
- Payment:
- Shipping:
Inventory:470
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Product details
Overview
TN4050HP-12L2Y from STMicroelectronics is an AEC-Q101 qualified automotive-grade SCR thyristor in HU3PAK package, rated for 40 ARMS on-state current, 1200 V repetitive off-state voltage (VDRM/VRRM), and 150 °C maximum junction temperature. It delivers robust AC switching for on-board chargers and overvoltage crowbar protection with 1000 V/µs dV/dt immunity and 50 mA max gate trigger current.
For engineers reviewing the TN4050HP-12L2Y datasheet, TN4050HP-12L2Y pinout, TN4050HP-12L2Y application, or TN4050HP-12L2Y equivalent, key selection criteria include RMS current derating at elevated case temperatures, gate drive compatibility with 1.3 V VGT max, thermal resistance (Rth(j-c) = 0.4 °C/W), and surge capability (ITSM = 440 A @ 8.3 ms).
Technical Context
This SCR operates as a latching unidirectional power switch triggered by a positive gate pulse, with critical design parameters including 150 °C max Tj, 1000 V/µs dV/dt immunity at Tj = 150 °C, and low on-state dynamic resistance (RD = 10 mΩ at Tj = 150 °C). Its 1400 V non-repetitive surge rating (VDSM/VRSM) supports transient overvoltage clamping in battery charger front-ends.
The device features fast turn-on (tgt typ. 1 µs) and turn-off (tq typ. 150 µs) timing under defined test conditions, enabling precise phase-controlled rectification and AC switching up to 50 A RMS in controlled bridge configurations. Gate sensitivity is characterized across temperature (IGT = 10–50 mA, VGT ≤ 1.3 V) to ensure reliable triggering in automotive ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 40 A - Sustained AC load current capability at TC = 135 °C, defining continuous conduction capacity in charger and relay applications. |
| VDRM / VRRM | 1200 V - Maximum repetitive blocking voltage in both directions, enabling use in 600 VAC systems with 2× safety margin. |
| dV/dt (min) | 1000 V/µs - Minimum rate of rise of off-state voltage before false triggering, critical for noise-immune operation in EMI-prone automotive environments. |
| Rth(j-c) | 0.4 °C/W - Junction-to-case thermal resistance, supporting high-power dissipation with top-side cooling on insulated metal substrates. |
| IGT (max) | 50 mA - Maximum gate trigger current required at 25 °C, setting driver strength requirement for compatible gate ICs or discrete transistor stages. |
| VTM (max) | 1.55 V - Peak on-state voltage at 80 A and 25 °C, directly determining conduction loss and thermal load at full current. |
| ITSM (8.3 ms) | 440 A - Non-repetitive surge current rating, enabling short-circuit withstand and capacitor discharge pulse handling without failure. |
Pinout & Package
Supplied in HU3PAK surface-mount package (3.5 × 14.0 × 18.6 mm), featuring isolated copper base for top-side cooling and optimized thermal path. Package meets UL94 V0 flammability rating and ECOPACK2 environmental compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A (Anode) | Main power input terminal | Carries full load current into device; electrically connected to exposed thermal pad for direct heatsinking. |
| K (Cathode) | Main power output terminal | Provides low-impedance return path; forms main conduction loop with Anode during forward conduction. |
| G (Gate) | Control input terminal | Receives triggering pulse to initiate conduction; requires ≥10 mA and ≤1.3 V to reliably latch at 25 °C. |
| NC | No connect | Internally unconnected pin; must remain floating-no external bias or routing permitted. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive power electronics per stress testing standard, enabling deployment in OBC and traction auxiliary systems. |
| 150 °C max junction temperature | Enables operation in under-hood environments without derating below 135 °C case temperature, extending system reliability. |
| 1000 V/µs dV/dt immunity | Prevents spurious turn-on from fast transients in noisy battery charging circuits, eliminating need for snubber networks in many designs. |
| HU3PAK surface-mount package | Supports automated assembly and compact board layout while delivering 0.4 °C/W thermal resistance for efficient top-side cooling. |
| 400 V sine-wave pulse robustness | Validated capability to withstand 400 V peak AC pulses, confirming suitability for crowbar protection in DC-link overvoltage events. |
Applications
| On-Board Charger (OBC) Input Stage | Capacitor Discharge Circuit |
|---|---|
|
Use Scenario: AC-to-DC conversion stage in 11 kW automotive OBC, where phase-controlled rectification regulates DC bus voltage. IC Role / Device Role / Timing Role: SCR-based half-controlled bridge thyristor providing bidirectional AC switching with gate-triggered conduction onset. Use Value: Enables zero-crossing synchronized firing for reduced EMI and precise RMS current control up to 40 A with minimal conduction loss (VTM ≤ 1.55 V). |
Use Scenario: Rapid energy dump from high-voltage DC link capacitors during fault shutdown or maintenance isolation. IC Role / Device Role / Timing Role: High-current crowbar switch triggered on overvoltage detection to short circuit DC bus through low-resistance path. Use Value: Withstands 440 A surge (8.3 ms) and blocks 1200 V continuously, ensuring safe, repeatable discharge without degradation. |
| Overvoltage Crowbar Protection | Solid-State Relay (SSR) Output Stage |
|
Use Scenario: Protection circuit for 800 V battery systems, clamping transient overvoltages above 1000 V by triggering conduction. IC Role / Device Role / Timing Role: Latching voltage-triggered switch that remains on until current falls below holding threshold (IH ≤ 100 mA). Use Value: 1400 V non-repetitive surge rating (VDSM) and 1000 V/µs dV/dt immunity prevent false triggering while ensuring fail-safe clamping response. |
Use Scenario: Isolated AC switching element in industrial SSR modules replacing electromechanical relays in HVAC and motor controls. IC Role / Device Role / Timing Role: Bidirectional AC power switch with zero-voltage turn-off capability and gate-controlled turn-on timing. Use Value: Supports 56 A RMS AC switching (per datasheet claim) with 150 °C Tj rating, enabling compact, fanless SSR designs for harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR thyristor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH30L06D | 600 V VRRM, 30 A IT(RMS), TO-220AC package, no AEC-Q101 qualification | Limited to non-automotive 230 VAC systems; lacks thermal performance and surge robustness for OBC use | Select only for cost-sensitive industrial AC switches where 1200 V blocking and automotive qualification are unnecessary |
| IXYS MCR100-12 | 1200 V VRRM, 100 A IT(RMS), TO-218 package, no AEC-Q101, Rth(j-c) = 0.65 °C/W | Higher current rating but larger footprint and lower thermal efficiency; not validated for automotive temperature cycling | Consider for high-current stationary power supplies where board space and automotive compliance are secondary concerns |
Compared with STTH30L06D and IXYS MCR100-12, the TN4050HP-12L2Y uniquely combines AEC-Q101 qualification, 0.4 °C/W thermal resistance, and 1000 V/µs dV/dt immunity in a surface-mount package-enabling compact, reliable, and noise-immune SCR implementation in automotive OBC and crowbar systems.
Availability
TN4050HP-12L2Y is available at Aetrix Electronics and suitable for on-board chargers, solid-state relays, and overvoltage crowbar protection circuits requiring stable component supply, automotive-grade reliability, and high-temperature operation.
Supply support for TN4050HP-12L2Y includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader specializing in automotive, industrial, and power discrete technologies, with broad portfolio coverage from microcontrollers to high-voltage power devices.
This part belongs to ST's high-voltage automotive thyristor product line, engineered specifically for robust, thermally efficient AC power control in electric vehicle charging and protection systems.
FAQ
What is the maximum allowable case temperature for continuous 40 A RMS operation?
The datasheet specifies IT(RMS) = 40 A at TC = 135 °C with 180° conduction angle. Operation above this case temperature requires linear derating per Figure 2; at TC = 150 °C, maximum IT(AV) drops to ~25 A. Thermal design must maintain case temperature ≤135 °C under worst-case ambient and airflow conditions.
Can TN4050HP-12L2Y be used in a fully controlled rectifier bridge?
No-it is a semi-controlled (SCR) device that conducts only when gated on and turns off only when current falls below holding level (IH ≤ 100 mA). Fully controlled bridges require four-quadrant switching elements like IGBTs or MOSFETs; this part is suitable for half-controlled bridges or phase-angle controlled AC switches.
Is the HU3PAK package lead-free and RoHS compliant?
Yes-the device is ECOPACK2 compliant, meeting RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. The HU3PAK package uses lead-free terminations and halogen-free epoxy, verified per ST's material declarations and JEDEC J-STD-020 moisture sensitivity level (MSL) 3 rating.
What gate drive circuitry is recommended for reliable triggering?
A gate pulse of ≥10 mA (min), ≤50 mA (max), with VGT ≤ 1.3 V and duration ≥10 µs ensures latching across temperature. ST recommends using a dedicated thyristor gate driver IC (e.g., STGWT28V) or a buffered transistor stage with fast rise time (<100 ns) to meet dI/dt requirements and avoid false triggering from noise.
TN4050HP-12L2Y Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Off State:
- 1.2 kV
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Gate Trigger (Igt) (Max):
- 50 mA
- Voltage - On State (Vtm) (Max):
- 1.55 V
- Current - On State (It (AV)) (Max):
- 25 A
- Current - On State (It (RMS)) (Max):
- 40 A
- Current - Hold (Ih) (Max):
- 100 mA
- Current - Off State (Max):
- 5 µA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 400A, 440A
- SCR Type:
- Standard Recovery
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- HU3PAK
TN4050HP-12L2Y FAQ
1.How can I place an order for TN4050HP-12L2Y through Aetrix?
Please submit a Request for Quotation (RFQ) for TN4050HP-12L2Y on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TN4050HP-12L2Y reliable?
The price and inventory of TN4050HP-12L2Y are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TN4050HP-12L2Y is usually 5 days.
3.What payment methods are accepted for TN4050HP-12L2Y?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TN4050HP-12L2Y transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TN4050HP-12L2Y?
TN4050HP-12L2Y orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TN4050HP-12L2Y order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TN4050HP-12L2Y?
For technical support, including TN4050HP-12L2Y datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TN4050HP-12L2Y requirements.
6.How does Aetrix verify that TN4050HP-12L2Y is sourced from the original manufacturer or authorized distributors?
All TN4050HP-12L2Y products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TN4050HP-12L2Y meets industry standards.
7.What is the process for return or replacement of TN4050HP-12L2Y?
All TN4050HP-12L2Y units undergo pre-shipment inspection (PSI). If there is an issue with TN4050HP-12L2Y, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TN4050HP-12L2Y part is unused and in its original packaging.
Return procedure for TN4050HP-12L2Y:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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