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STMicroelectronics TN4050HP-12G2YTR
- Part No.:
- TN4050HP-12G2YTR
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
TN4050HP-12G2YTR.pdf
- Description:
- 1200 V, 40 A AUTOMOTIVE GRADE AE
- Quantity:
- Payment:
- Shipping:
Inventory:1,026
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Product details
Overview
TN4050HP-12G2YTR from STMicroelectronics is an automotive-grade SCR thyristor in D²PAK HV package, rated for 40 A RMS on-state current, 1200 V repetitive off-state voltage (VDRM/VRRM), and 150 °C maximum junction temperature. It delivers robust AC power 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-12G2YTR datasheet, TN4050HP-12G2YTR pinout, TN4050HP-12G2YTR application, or TN4050HP-12G2YTR equivalent, this part supports high-reliability 56 A RMS AC switch and 50 A AC–DC controlled rectifier-bridge designs under automotive thermal and insulation constraints.
Technical Context
This SCR operates as a latching unidirectional power switch triggered by gate current, with critical conduction control defined by latching (IL ≤ 125 mA) and holding (IH ≤ 100 mA) currents. Its 1400 V non-repetitive surge rating (VDSM/VRSM) and 200 A/µs critical di/dt support transient-heavy applications like capacitor discharge and crowbar circuits.
Thermal design is enabled by low junction-to-case resistance (Rth(j-c) ≤ 0.4 °C/W) and D²PAK HV's 5.38 mm creepage distance (with top coating), meeting IEC 60664-1 and UL-840 insulation coordination requirements without additional spacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 40 A RMS - supports continuous 56 A RMS AC switching at derated case temperature |
| VDRM / VRRM | 1200 V - enables operation in 800 V AC line systems with ≥50% safety margin |
| dV/dt (min) | 1000 V/µs - suppresses false triggering in noisy high-dV/dt environments like motor drives |
| IGT (max) | 50 mA - defines minimum gate driver output capability required for reliable turn-on |
| VTM (max) | 1.55 V @ 80 A - determines on-state power loss (≤124 W peak) and thermal load at full current |
| Rth(j-c) | 0.4 °C/W - allows direct heatsink mounting to sustain 40 A RMS with <16 °C junction rise above case |
| CdK-A1 | 5.38 mm - satisfies reinforced insulation clearance for 1200 V working voltage per IEC 60664-1 |
Pinout & Package
The TN4050HP-12G2YTR uses the D²PAK HV surface-mount package (JEDEC TO-263HV), featuring isolated anode (A1/A2) and cathode (K) terminals with enhanced creepage. The tab is electrically connected to the anode (A2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Main anode terminal; connects to high-side AC input or DC bus positive in crowbar/rectifier |
| A2 | Anode 2 / Tab | Electrically tied to A1; thermally conductive metal tab for heatsink mounting and electrical return path |
| K | Cathode | Current return path; referenced to gate drive ground; carries full load current during conduction |
| G | Gate | Trigger input; requires ≥10 mA (min) pulse to initiate conduction; isolated from power terminals |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, vibration, and humidity testing |
| 150 °C max junction temperature | Enables operation in engine bay or charger enclosures without active cooling below 135 °C case temp |
| D²PAK HV 5.38 mm creepage | Eliminates need for slotting or conformal coating to meet IEC 60664-1 reinforced insulation at 1200 V |
| 1000 V/µs dV/dt immunity | Prevents spurious turn-on during fast transients in AC switch and OVP crowbar applications |
| ECOPACK2 compliance | Meets RoHS and halogen-free requirements for automotive supply chain traceability and environmental compliance |
Applications
| On-Board Charger (OBC) | Capacitor Discharge Unit |
|---|---|
|
Use Scenario: High-efficiency bidirectional AC–DC conversion in EV/HEV on-board chargers, where SCR-based phase-controlled rectification regulates battery charging current. IC Role / Device Role / Timing Role: Main AC line switch controlling conduction angle; triggered synchronously with zero-crossing detection for precise RMS current regulation. Use Value: Enables 40 A RMS continuous switching at 150 °C junction, supporting compact thermal design without forced air cooling in space-constrained OBC modules. |
Use Scenario: Rapid energy dump from high-voltage DC storage capacitors into resistive loads during system fault or test sequences. IC Role / Device Role / Timing Role: High-current crowbar switch activated by fault logic; conducts full capacitor discharge current until fuse interruption. Use Value: Withstands 440 A non-repetitive surge (8.3 ms) and 1400 V VRSM, ensuring single-pulse reliability without device failure during emergency discharge. |
| Overvoltage Crowbar Protection | Industrial AC Power Switch |
|
Use Scenario: Fail-safe overvoltage protection for sensitive downstream electronics in telecom power supplies and industrial PLCs. IC Role / Device Role / Timing Role: Latched crowbar element that shorts input when overvoltage threshold is exceeded, clamping voltage to safe level. Use Value: 1200 V VDRM and 1000 V/µs dV/dt prevent false triggering while enabling fast response (<1 µs tgt) to transient overvoltages. |
Use Scenario: Solid-state replacement of electromechanical relays in HVAC controls, lighting ballasts, and heating element drivers. IC Role / Device Role / Timing Role: Zero-crossing or phase-angle controlled AC switch delivering up to 56 A RMS load current. Use Value: D²PAK HV package enables automated SMT assembly and meets UL-840 creepage requirements for 277 V AC industrial mains without board redesign. |
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 400 V AC systems; lacks automotive qualification and high dV/dt immunity | Select only for cost-sensitive non-automotive 230 V AC switching where 1200 V margin is unnecessary |
| IXYS MCR100-12 | 1200 V VRRM, 100 A IT(RMS), TO-218 package, 125 °C Tj max, no AEC-Q101 | Higher current rating but larger footprint and lower thermal performance (Rth(j-c) ≈ 0.65 °C/W) | Preferred for industrial 3-phase rectifiers needing >40 A RMS, but not suitable for automotive space/thermal constraints |
Compared with STTH30L06D and IXYS MCR100-12, the TN4050HP-12G2YTR uniquely combines AEC-Q101 qualification, 150 °C operation, and D²PAK HV's 5.38 mm creepage-making it the only choice for automotive on-board chargers requiring both high reliability and SMT manufacturability.
Availability
TN4050HP-12G2YTR is available at Aetrix Electronics and suitable for on-board chargers, overvoltage crowbar protection circuits, and industrial AC solid-state relays requiring stable component supply across automotive production lifecycles.
Supply support for TN4050HP-12G2YTR 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 headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.
This part belongs to ST's high-voltage power thyristor product line, engineered specifically for automotive-grade AC power control and protection functions where reliability, thermal resilience, and regulatory compliance are mandatory.
FAQ
What is the maximum allowable gate trigger pulse width for reliable turn-on?
The datasheet specifies gate trigger pulse conditions using tp = 20 µs for VGM and IGM ratings. For reliable turn-on across temperature, ST recommends a minimum pulse width of 100 µs with ≥1.2×IGT amplitude to ensure latching under worst-case junction temperature (150 °C) and aging effects. Shorter pulses risk incomplete conduction initiation.
Can TN4050HP-12G2YTR be used in DC applications?
No-it is a unidirectional SCR thyristor requiring AC line commutation or external forced commutation to reset conduction. In pure DC circuits, once triggered, it remains latched until current falls below the holding current (IH ≤ 100 mA). For DC switching, a GTO, IGBT, or MOSFET is required instead.
How does the D²PAK HV package improve insulation compared to standard D²PAK?
D²PAK HV increases the minimum creepage distance between anode (A1/A2) and cathode (K) to 5.38 mm (with top coating) versus ~3.5 mm in standard D²PAK. This meets reinforced insulation requirements for 1200 V working voltage per IEC 60664-1 without PCB slotting or conformal coating, reducing design complexity and cost.
What thermal interface material is recommended for the D²PAK HV tab?
ST recommends a thermally conductive, electrically insulating pad (e.g., Bergquist Sil-Pad 900S or Parker Chomerics Thermasil 300) with ≤0.25 mm thickness and thermal conductivity ≥1.5 W/m·K. Avoid silicone-based greases unless verified compatible with the epoxy mold compound, as outgassing may degrade long-term adhesion and thermal performance.
TN4050HP-12G2YTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- 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:
- D2PAK HV
TN4050HP-12G2YTR FAQ
1.How can I place an order for TN4050HP-12G2YTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TN4050HP-12G2YTR 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-12G2YTR reliable?
The price and inventory of TN4050HP-12G2YTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TN4050HP-12G2YTR is usually 5 days.
3.What payment methods are accepted for TN4050HP-12G2YTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TN4050HP-12G2YTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TN4050HP-12G2YTR?
TN4050HP-12G2YTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TN4050HP-12G2YTR 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-12G2YTR?
For technical support, including TN4050HP-12G2YTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TN4050HP-12G2YTR requirements.
6.How does Aetrix verify that TN4050HP-12G2YTR is sourced from the original manufacturer or authorized distributors?
All TN4050HP-12G2YTR 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-12G2YTR meets industry standards.
7.What is the process for return or replacement of TN4050HP-12G2YTR?
All TN4050HP-12G2YTR units undergo pre-shipment inspection (PSI). If there is an issue with TN4050HP-12G2YTR, 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-12G2YTR part is unused and in its original packaging.
Return procedure for TN4050HP-12G2YTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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