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STMicroelectronics TM8050H-8D3-TR
- Part No.:
- TM8050H-8D3-TR
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-268-3, D3PAK (2 Leads + Tab), TO-268AA
- Datasheet:
-
TM8050H-8D3-TR.pdf
- Description:
- SCR 800V 80A D3PAK
- Quantity:
- Payment:
- Shipping:
Inventory:445
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Product details
Overview
TM8050H-8D3-TR from STMicroelectronics is an 800 V, 80 A RMS SCR thyristor in D3PAK surface-mount package, designed for high-power AC switching in motorbike voltage regulators, controlled rectifier bridges, and solid-state relays. It features 1.55 V on-state voltage at 160 A, 150 °C maximum junction temperature, and >1 kV/µs dV/dt immunity.
For engineers reviewing the TM8050H-8D3-TR datasheet, TM8050H-8D3-TR pinout, TM8050H-8D3-TR application, or TM8050H-8D3-TR equivalent, key selection criteria include blocking voltage (800 V), RMS current rating (80 A), gate trigger current (≤50 mA), thermal resistance (0.25 °C/W j-c), and D3PAK mounting compatibility with high-current PCB layouts.
Technical Context
This SCR operates as a unidirectional, gate-controlled power switch with latching behavior after turn-on. Its 150 °C Tj rating enables operation in thermally constrained environments such as motorcycle charging systems and industrial welding controls where ambient temperatures exceed 100 °C.
It exhibits low conduction loss (VTM ≤ 1.55 V @ 160 A) and high noise immunity (dV/dt ≥ 1000 V/µs at Tj = 150 °C), supporting reliable triggering in electrically noisy motor drive and UPS bypass applications without false turn-on.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 800 V - supports full-wave AC line switching up to 565 V peak without breakdown |
| IT(RMS) | 80 A - delivers continuous load current in motor drives and battery chargers with standard heatsinking |
| IGT max | 50 mA - compatible with standard microcontroller GPIO or optocoupler gate drivers |
| Tj max | 150 °C - extends usable thermal margin in sealed enclosures and engine-bay mounted regulators |
| Rth(j–c) | 0.25 °C/W - enables compact thermal design with minimal heatsink mass for 80 A conduction |
| dV/dt min | 1000 V/µs - prevents spurious turn-on during fast transients in industrial AC control circuits |
| VTM | 1.55 V @ 160 A - limits conduction loss to ≤248 W peak, reducing thermal stress in pulsed loads |
Pinout & Package
Package: D3PAK (TO-263 variant), surface-mount, single-side heat dissipation via exposed tab. Dimensions: 15.85–16.05 mm × 13.80–14.00 mm × 18.70–19.10 mm (L × W × H), MSL 1, lead-free, halogen-free (Ecopack2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A2) | Main current input terminal | High-side connection point for AC line or DC bus; must be isolated from PCB ground plane |
| Cathode (A1) | Main current output terminal | Connected to load return path; forms low-impedance current loop with A2 and gate |
| Gate (G) | Trigger control input | Receives pulse current (≥2.5 mA, ≤50 mA) to initiate conduction; requires low-inductance routing |
| Tab (Anode-connected) | Thermal and electrical interface | Electrically tied to A2; serves as primary heat transfer path to heatsink or copper pour |
Key Features
| Feature | Design Value |
|---|---|
| Extended junction temperature range | −40 °C to +150 °C - eliminates derating in engine compartment or industrial enclosure applications |
| Low on-state voltage drop | VTM ≤ 1.55 V @ 160 A - reduces conduction losses by ~15% vs. legacy 80 A SCRs with VTM > 1.8 V |
| High dV/dt immunity | ≥1000 V/µs at Tj = 150 °C - ensures stable operation in variable-frequency motor drives with fast-switching IGBTs nearby |
| Ecopack2 compliance | Halogen-free, RoHS-compliant materials - meets EU automotive and industrial environmental requirements without performance trade-offs |
| Robust surge capability | ITSM = 731 A (8.3 ms) - withstands short-circuit events in welding equipment and UPS bypass paths |
Applications
| Motorbike Voltage Regulator | AC Solid-State Relay |
|---|---|
Use Scenario: Regulates alternator output in 12 V motorcycle electrical systems under varying RPM and load conditions. IC Role / Device Role / Timing Role: SCR-based phase-controlled rectifier that adjusts conduction angle to maintain stable battery voltage. Use Value: Enables compact, thermally robust regulation without external heatsink due to 150 °C Tj and 0.25 °C/W Rth(j–c). | Use Scenario: Replaces electromechanical contactors in HVAC and lighting control panels requiring silent, wear-free AC switching. IC Role / Device Role / Timing Role: Bidirectional AC switch triggered by zero-crossing logic to minimize EMI and inrush current. Use Value: Delivers 80 A RMS switching with <100 µs turn-off time and >1 kV/µs dV/dt immunity for reliable zero-voltage turn-off. |
| Battery Charging System | Industrial Welding Equipment |
Use Scenario: Controls DC output of three-phase rectifier in high-current EV charger front-end or industrial battery formation systems. IC Role / Device Role / Timing Role: Phase-angle controlled thyristor in semi-controlled bridge configuration for precise current regulation. Use Value: Supports 80 A RMS continuous current with low VTM (1.55 V) to minimize power loss and thermal management complexity. | Use Scenario: Switches primary-side AC in resistance spot welders and capacitor-discharge welders subject to repetitive high-current surges. IC Role / Device Role / Timing Role: High-surge-capable SCR handling 731 A non-repetitive pulses (8.3 ms) per weld cycle. Use Value: Survives >10⁴ weld cycles without degradation thanks to 2245 A²s I²t rating and 150 °C thermal margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1608D | 800 V, 16 A average current, TO-220 package, lower IT(RMS) rating | Suitable only for low-power rectifiers; lacks thermal capacity for 80 A RMS loads | Select when board space allows through-hole mounting and current demand is ≤16 A avg. |
| IXYS MCR100-12 | 1200 V, 100 A RMS, TO-218 package, higher VDRM but larger footprint and no Ecopack2 | Supports higher line voltages (e.g., 3-phase 690 V systems); not RoHS/halogen-free compliant | Choose for 1200 V systems requiring legacy packaging and higher blocking voltage, accepting larger size and environmental trade-offs. |
Compared with STTH1608D and IXYS MCR100-12, TM8050H-8D3-TR uniquely balances 80 A RMS capability, D3PAK surface-mount compatibility, 150 °C operation, and Ecopack2 compliance-making it optimal for space-constrained, thermally demanding, and environmentally regulated applications like motorcycle electronics and industrial UPS modules.
Availability
TM8050H-8D3-TR is available at Aetrix Electronics and suitable for motorbike voltage regulators, AC solid-state relays, and industrial battery charging systems requiring stable component supply, long-lifecycle support, and consistent D3PAK thermal performance.
Supply support for TM8050H-8D3-TR 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, delivering innovative silicon solutions across automotive, industrial, power, and embedded markets since 1987.
This device belongs to ST's high-power thyristor product line, engineered specifically for ruggedized AC power control in harsh thermal and electrical environments-including engine compartments, welding cells, and uninterruptible power systems.
FAQ
What is the maximum allowable gate trigger voltage for TM8050H-8D3-TR?
The maximum peak reverse gate voltage (VRGM) is 5 V, and the maximum gate trigger voltage (VGT) is 1.5 V under standard test conditions (VD = 12 V, RL = 33 Ω). Exceeding 5 V risks permanent gate oxide damage. Gate drive circuits must limit reverse voltage and ensure VGT remains within 0.25–1.5 V for reliable turn-on across temperature.
Can TM8050H-8D3-TR be used in DC applications?
Yes, but only in unidirectional DC switching where the anode remains positive relative to cathode and gate triggering initiates conduction. It cannot commutate itself in DC; external circuitry (e.g., forced commutation or series FET) is required to interrupt current. Its 800 V VDRM rating applies to reverse blocking, not DC interruption capability.
What is the minimum gate current required to guarantee turn-on at 150 °C junction temperature?
The datasheet specifies IGT ≤ 50 mA maximum at Tj = 25 °C, and Figure 10 shows IGT increases ~1.8× at 150 °C. Thus, guaranteed turn-on requires ≥4.5 mA (2.5 mA × 1.8) minimum, but design margin dictates using ≥10 mA to ensure reliability across manufacturing spread and aging effects at elevated temperature.
How does the D3PAK package affect thermal performance compared to TO-220?
D3PAK offers lower Rth(j–c) (0.25 °C/W) than typical TO-220 (0.5–1.0 °C/W) due to larger copper tab area and optimized internal bond wire layout. However, its Rth(j–a) is higher (40 °C/W) unless mounted on ≥2.1 cm² of 35 µm copper. For 80 A RMS operation, D3PAK enables smaller heatsinks when soldered directly to thick copper, whereas TO-220 requires mechanical clamping and thermal paste.
TM8050H-8D3-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-268-3, D3PAK (2 Leads + Tab), TO-268AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Off State:
- 800 V
- Voltage - Gate Trigger (Vgt) (Max):
- 1.5 V
- Current - Gate Trigger (Igt) (Max):
- 50 mA
- Voltage - On State (Vtm) (Max):
- 1.55 V
- Current - On State (It (AV)) (Max):
- 50 A
- Current - On State (It (RMS)) (Max):
- 80 A
- Current - Hold (Ih) (Max):
- 100 mA
- Current - Off State (Max):
- 20 µA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 670A, 731A
- SCR Type:
- Standard Recovery
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D3PAK
TM8050H-8D3-TR FAQ
1.How can I place an order for TM8050H-8D3-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for TM8050H-8D3-TR 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 TM8050H-8D3-TR reliable?
The price and inventory of TM8050H-8D3-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TM8050H-8D3-TR is usually 5 days.
3.What payment methods are accepted for TM8050H-8D3-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TM8050H-8D3-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TM8050H-8D3-TR?
TM8050H-8D3-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TM8050H-8D3-TR 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 TM8050H-8D3-TR?
For technical support, including TM8050H-8D3-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TM8050H-8D3-TR requirements.
6.How does Aetrix verify that TM8050H-8D3-TR is sourced from the original manufacturer or authorized distributors?
All TM8050H-8D3-TR 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 TM8050H-8D3-TR meets industry standards.
7.What is the process for return or replacement of TM8050H-8D3-TR?
All TM8050H-8D3-TR units undergo pre-shipment inspection (PSI). If there is an issue with TM8050H-8D3-TR, 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 TM8050H-8D3-TR part is unused and in its original packaging.
Return procedure for TM8050H-8D3-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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