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STMicroelectronics TN1605H-8G-TR
- Part No.:
- TN1605H-8G-TR
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
TN1605H-8G-TR.pdf
- Description:
- 16 A 800 V HIGH TEMPERATURE SCR
- Quantity:
- Payment:
- Shipping:
Inventory:1,740
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Product details
Overview
TN1605H-8G-TR from STMicroelectronics is a high-temperature, 16 A RMS sensitive-gate SCR in D²PAK surface-mount package, rated for 800 V repetitive peak off-state voltage (VDRM/VRRM), 150 °C maximum junction temperature, and 500 V/μs dV/dt immunity at Tj = 150 °C. It enables compact inrush current limiting and crowbar protection in AC/DC converters and industrial motor control circuits.
For engineers reviewing the TN1605H-8G-TR datasheet, TN1605H-8G-TR pinout, TN1605H-8G-TR application, or TN1605H-8G-TR equivalent, key selection criteria include gate trigger current tightness (5–8 mA), high dI/dt capability (100 A/μs), thermal resistance (Rth(j-c) = 1.1 °C/W), and ECOPACK2-compliant halogen-free packaging for high-reliability power switching.
Technical Context
This SCR operates as a latching bidirectional switch triggered by a low-energy gate pulse, with precise IGT spread ensuring consistent turn-on across temperature. Its 100 A/μs critical dI/dt rating supports fast commutation in high-current crowbar and discharge circuits without false triggering.
The device leverages a robust silicon structure optimized for sustained operation at 150 °C junction temperature, delivering 16 A RMS conduction at TC = 134 °C while maintaining low on-state voltage (VTM ≤ 1.55 V at 32 A, 25 °C) and dynamic resistance (RD ≤ 25 mΩ at 150 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDRM / VRRM | 800 V - blocks full AC line peaks up to 566 V RMS with safety margin for surge transients |
| IT(RMS) | 16 A - delivers continuous load current in thermally managed PCB layouts with ≥2.5 cm² copper under tab |
| Tj max | 150 °C - enables operation in high-ambient industrial enclosures without derating below 134 °C case temperature |
| IGT range | 5–8 mA - allows reliable triggering with low-power microcontroller GPIO or optocoupler drivers |
| dV/dt immunity | 500 V/μs at 150 °C - prevents false turn-on during fast-rising noise on AC mains or bus lines |
| dI/dt rating | 100 A/μs - sustains rapid current rise during short-circuit crowbar activation without latch-up failure |
| Rth(j-c) | 1.1 °C/W - enables efficient heat transfer to heatsink or copper plane, limiting ΔT to 17.6 °C at 16 A conduction |
Pinout & Package
Package: D²PAK (TO-263AB), surface-mount, single-ended tab (anode-connected), 3-terminal configuration with exposed metal thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Main current path input | High-current terminal tied to AC line or DC bus; electrically and thermally connected to exposed tab |
| 2 (Cathode) | Main current path output | Return path for load current; forms low-inductance loop with Anode for fast dI/dt handling |
| 3 (Gate) | Trigger control input | Sensitive gate requiring ≤8 mA pulse; isolated from main terminals to prevent noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| High junction temperature rating | 150 °C operation enables use in sealed industrial drives without forced air cooling |
| Tight IGT spread | 5–8 mA range ensures predictable gate drive design across production lots and temperature |
| High static dV/dt immunity | 500 V/μs at 150 °C eliminates need for external snubbers in noisy AC line environments |
| Fast dI/dt capability | 100 A/μs supports sub-microsecond crowbar response for overvoltage bus protection |
| ECOPACK2 compliance | Halogen-free molding + lead-free plating meets RoHS and JEDEC J-STD-020 reflow requirements |
Applications
| AC/DC Inrush Limiting | Solid-State Relay Control |
|---|---|
|
Use Scenario: Limits inrush current into bulk capacitors during cold start of industrial AC/DC power supplies. IC Role / Device Role / Timing Role: SCR acts as series switch that remains off until capacitor voltage reaches safe threshold, then latches on. Use Value: Prevents tripping of upstream breakers and extends capacitor lifetime by limiting peak charge current to <100 A. |
Use Scenario: Replaces electromechanical relays in heating resistor control for HVAC and industrial ovens. IC Role / Device Role / Timing Role: SCR serves as zero-crossing or phase-angle controlled AC load switch driven by microcontroller PWM. Use Value: Enables silent, wear-free switching with 16 A RMS capacity and 150 °C ambient tolerance for enclosed heater cabinets. |
| Crowbar Overvoltage Protection | Power Bus Discharge Circuit |
|
Use Scenario: Triggers immediate short-circuit across DC bus when overvoltage is detected in UPS or servo amplifier systems. IC Role / Device Role / Timing Role: SCR functions as fast-acting crowbar element activated by comparator-driven gate pulse. Use Value: Responds within 1.9 µs turn-on time (tgt) and sustains 177 A non-repetitive surge to clamp bus voltage below 30 V. |
Use Scenario: Safely discharges high-voltage DC bus after shutdown in motor drives and inverters. IC Role / Device Role / Timing Role: SCR provides controlled, high-current discharge path triggered by system controller post-power-off. Use Value: Achieves full bus discharge in <50 ms using 16 A RMS-rated conduction without thermal stress due to Rth(j-c) = 1.1 °C/W. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR-based AC/DC switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1605D | 16 A, 500 V fast recovery diode (not thyristor); no gate control or latching behavior | Replaces rectification stage only; cannot substitute for gate-triggered switching or crowbar function | Select only if replacing freewheeling diodes-not for SCR functional replacement |
| BT169G | 4 A RMS, 400 V VDRM, TO-92 package; IGT = 5–15 mA, dV/dt = 100 V/μs at 125 °C | Limited to low-power signal-level switching; insufficient for 16 A inrush or crowbar duty | Use only in sub-1 A control logic; not suitable for thermal or current scaling of TN1605H-8G-TR |
Compared with BT169G and STTH1605D, TN1605H-8G-TR uniquely combines 16 A RMS rating, 800 V blocking, 150 °C operation, and 500 V/μs dV/dt immunity-enabling single-device solutions for high-reliability industrial crowbar and inrush limiting where alternatives require parallel devices or external protection.
Availability
TN1605H-8G-TR is available at Aetrix Electronics and suitable for AC/DC inrush limiting, solid-state relay control, and crowbar overvoltage protection requiring stable component supply and long-term industrial lifecycle support.
Supply support for TN1605H-8G-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, designing and manufacturing analog, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.
TN1605H-8G-TR belongs to ST's high-temperature SCR family engineered specifically for ruggedized AC line control, inrush suppression, and fail-safe crowbar protection in harsh thermal and electrical environments.
FAQ
What is the recommended minimum gate trigger pulse width for reliable turn-on?
The datasheet specifies a typical gate trigger time (tgt) of 1.9 µs at 32 A load and 12 mA gate current. To ensure robust latching across temperature and process variation, ST recommends ≥10 µs gate pulse width with ≥12 mA peak current, especially at Tj = 150 °C where IGT increases and dV/dt immunity decreases.
Can TN1605H-8G-TR be used in phase-angle dimming circuits?
Yes-it supports phase-controlled AC switching with gate timing referenced to zero-crossing detection. Its 100 A/μs dI/dt rating and 500 V/μs dV/dt immunity allow clean turn-on even with steep voltage edges. However, thermal design must account for conduction angle-dependent RMS current and associated power dissipation per Figure 1 and Figure 2.
Is a heatsink required for 16 A RMS operation?
At 16 A RMS, junction-to-case thermal resistance is 1.1 °C/W. With 1.55 V on-state drop, power dissipation is ~25 W. Without a heatsink, ambient-to-case thermal resistance exceeds 40 °C/W (per Figure 12), causing Tj > 150 °C. A low-thermal-resistance heatsink or ≥2.5 cm² 70 µm copper plane under the tab is mandatory for full-rated operation.
Does TN1605H-8G-TR support bidirectional current flow like a TRIAC?
No-it is a unidirectional SCR and conducts current only from anode to cathode. For bidirectional AC switching (e.g., full-wave light dimming), a back-to-back SCR pair or a TRIAC such as the ST1220 would be required. TN1605H-8G-TR is designed for half-wave or DC-bus crowbar applications where polarity is fixed.
TN1605H-8G-TR 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:
- 800 V
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Gate Trigger (Igt) (Max):
- 8 mA
- Voltage - On State (Vtm) (Max):
- 1.55 V
- Current - On State (It (AV)) (Max):
- 10 A
- Current - On State (It (RMS)) (Max):
- 16 A
- Current - Hold (Ih) (Max):
- 30 mA
- Current - Off State (Max):
- 1 µA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 160A, 177A
- SCR Type:
- Standard Recovery
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
TN1605H-8G-TR FAQ
1.How can I place an order for TN1605H-8G-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for TN1605H-8G-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 TN1605H-8G-TR reliable?
The price and inventory of TN1605H-8G-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TN1605H-8G-TR is usually 5 days.
3.What payment methods are accepted for TN1605H-8G-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TN1605H-8G-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TN1605H-8G-TR?
TN1605H-8G-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TN1605H-8G-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 TN1605H-8G-TR?
For technical support, including TN1605H-8G-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TN1605H-8G-TR requirements.
6.How does Aetrix verify that TN1605H-8G-TR is sourced from the original manufacturer or authorized distributors?
All TN1605H-8G-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 TN1605H-8G-TR meets industry standards.
7.What is the process for return or replacement of TN1605H-8G-TR?
All TN1605H-8G-TR units undergo pre-shipment inspection (PSI). If there is an issue with TN1605H-8G-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 TN1605H-8G-TR part is unused and in its original packaging.
Return procedure for TN1605H-8G-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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