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STMicroelectronics TN2540-600G
- Part No.:
- TN2540-600G
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
TN2540-600G.pdf
- Description:
- SCR 600V 25A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:6,008
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Product details
Overview
TN2540-600G from STMicroelectronics is a standard 25 A, 600 V repetitive peak off-state voltage (VDRM/VRRM) silicon-controlled rectifier (SCR) in D2PAK package, with 40 mA gate trigger current (IGT), 1.6 V on-state voltage (VTM) at 50 A, and 50 A/µs critical dI/dt rating - used in AC motor speed controls, solid-state relays, and industrial heater phase-angle controllers.
For engineers reviewing the TN2540-600G datasheet, TN2540-600G pinout, TN2540-600G application, or TN2540-600G equivalent, key selection criteria include surge current capability (314 A, 8.3 ms), thermal resistance (1.0 °C/W junction-to-case), insulated gate drive compatibility, and UL1557-certified isolation for safety-critical AC line switching.
Technical Context
This SCR operates as a unidirectional latching switch triggered by a low-energy gate pulse, sustaining conduction until current falls below holding current (IH ≤ 50 mA). Its 1500 V/µs minimum dV/dt rating ensures noise immunity in high-voltage AC environments.
The device uses clip-bond assembly for enhanced surge robustness and features a 2500 Vrms insulation rating in insulated variants - though TN2540-600G itself is non-insulated D2PAK, sharing core electrical specs with TO-220AB ins variants like TXN625RG.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 25 A - continuous RMS load current handling at Tc = 100 °C, suitable for 3 kW resistive loads at 230 VAC |
| VDRM / VRRM | 600 V - maximum repetitive blocking voltage in forward/reverse direction, rated for 230 VAC mains with ≥2× safety margin |
| IGT | 40 mA max - gate trigger current required to initiate conduction, compatible with microcontroller GPIO or optocoupler drivers |
| VTM | 1.6 V max at 50 A - on-state voltage drop defining conduction loss (≤80 W peak dissipation) |
| dI/dt | 50 A/µs - minimum rate of rise of on-state current before false triggering, critical for inductive load commutation |
| Rth(j-c) | 1.0 °C/W - junction-to-case thermal resistance enabling 25 W steady-state power dissipation with 25 °C case temperature rise |
| IDRM / IRRM | 5 µA max at 25 °C - off-state leakage current ensuring minimal standby power loss in high-impedance circuits |
Pinout & Package
Package: D2PAK (TO-263), surface-mount, single-ended tab configuration with exposed drain-connected copper pad for thermal and electrical connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Main current entry terminal | Connected to AC line or high-side load; must withstand full VDRM and IT(RMS); electrically tied to heatsink via tab |
| Cathode (K) | Main current exit terminal | Connected to load return or neutral; forms main conduction path with Anode; low-inductance layout critical for dI/dt performance |
| Gate (G) | Trigger control input | Low-energy control node requiring ≤40 mA pulse; isolated from power terminals; sensitive to dv/dt-induced false turn-on |
Key Features
| Feature | Design Value |
|---|---|
| Surge current rating | 314 A (8.3 ms) - enables reliable operation during motor startup inductively loaded circuits without derating |
| Thermal resistance | 1.0 °C/W (j-c) - allows direct mounting to PCB copper pour or heatsink for passive thermal management in space-constrained designs |
| Gate sensitivity | 40 mA IGT - supports direct drive from logic-level sources without external amplification, reducing BOM count |
| dv/dt immunity | 1500 V/µs min - prevents spurious turn-on in noisy industrial environments with fast-switching adjacent circuits |
| Lead-free & RoHS | ECOPACK® compliant - meets environmental regulations for industrial and consumer equipment without compromising reliability |
Applications
| AC Motor Speed Control | Solid-State Relay |
|---|---|
Use Scenario: Phase-angle controlled dimming of universal motors in power tools and HVAC blowers. IC Role / Device Role / Timing Role: Main power switching element triggered synchronously with AC zero-crossing to regulate average motor voltage. Use Value: Enables precise torque/speed control with 25 A RMS current handling and 314 A surge tolerance for motor inrush. | Use Scenario: Replacement for electromechanical relays in PLC output modules and building automation panels. IC Role / Device Role / Timing Role: Bidirectional AC switching device (paired with back-to-back configuration) providing silent, bounce-free contactless switching. Use Value: Eliminates mechanical wear and contact arcing while supporting 600 V blocking and 25 A load current. |
| Industrial Heater Controller | Lighting Dimmer Module |
Use Scenario: Proportional power delivery to resistive heating elements in ovens, soldering stations, and plastic extruders. IC Role / Device Role / Timing Role: Line-synchronized power regulator modulating conduction angle per half-cycle to maintain setpoint temperature. Use Value: Delivers stable thermal output with 1.6 V VTM minimizing self-heating and 50 A/µs dI/dt ensuring clean turn-on under inductive sensor feedback. | Use Scenario: Mains-powered LED or incandescent lamp dimming in commercial lighting systems. IC Role / Device Role / Timing Role: Leading-edge phase-cut switch triggered by TRIAC-compatible driver ICs to adjust RMS lamp voltage. Use Value: Supports 230 VAC input with 600 V VDRM margin and 40 mA IGT for compatibility with standard optotriac couplers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXN625RG | Same 25 A/600 V/40 mA specs but in insulated TO-220AB package (2500 Vrms isolation) | Required where galvanic isolation between gate circuit and main power is mandated (e.g., Class I appliances) | Select when creepage/clearance requirements exceed PCB-based isolation or when retrofitting into legacy TO-220 footprints |
| TYN625RG | Identical electrical ratings but non-insulated TO-220AB package; higher Rth(j-c) = 1.0 °C/W same, but larger mechanical footprint | Suitable for cost-sensitive through-hole designs where heatsinking is via bolted metal chassis | Prefer for manual assembly, high-vibration environments, or where D2PAK reflow constraints exist |
Compared with TN2540-600G, TXN625RG adds reinforced insulation at the cost of surface-mount compatibility, while TYN625RG trades compact D2PAK size for easier mechanical mounting and identical thermal performance - choice depends on isolation needs and assembly method.
Availability
TN2540-600G is available at Aetrix Electronics and suitable for AC motor speed controls, solid-state relays, and industrial heater controllers requiring stable component supply across long-lifecycle industrial programs.
Supply support for TN2540-600G 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, designing and manufacturing analog, MCU, power, and sensing solutions for industrial, automotive, and consumer markets.
TN2540-600G belongs to ST's standard SCR product line engineered for ruggedized AC power control in mains-connected equipment - emphasizing surge robustness, thermal stability, and gate drive simplicity.
FAQ
What is the maximum junction temperature for continuous operation?
The TN2540-600G has an operating junction temperature range of –40 °C to +125 °C. For continuous conduction at rated IT(RMS) = 25 A, case temperature must be maintained at ≤100 °C, requiring thermal design that limits junction rise to 25 °C above case using its 1.0 °C/W Rth(j-c).
Can TN2540-600G replace a TRIAC in AC switching applications?
No - TN2540-600G is a unidirectional SCR and conducts only during alternate half-cycles unless paired anti-parallel with another SCR. TRIACs provide bidirectional conduction in a single device; use TN2540-600G only in DC or half-wave AC topologies, or pair two units for full-wave control.
Is a snubber circuit required for reliable operation?
A snubber (RC network) is recommended when switching inductive loads or in high-dv/dt environments, even though the device specifies 1500 V/µs minimum dv/dt immunity. It suppresses voltage transients exceeding VDRM during turn-off, preventing unintended re-triggering and extending device lifetime.
What is the gate trigger voltage threshold (VGT)?
The maximum gate trigger voltage (VGT) is 1.3 V under test conditions (VD = 12 V, RL = 33 Ω). This defines the minimum gate drive voltage needed to guarantee turn-on with ≤40 mA current; typical VGT is lower (~0.7–1.0 V), but design must accommodate worst-case 1.3 V to ensure robust triggering.
TN2540-600G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- Product Status:
- Obsolete
- Voltage - Off State:
- 600 V
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Gate Trigger (Igt) (Max):
- 40 mA
- Voltage - On State (Vtm) (Max):
- 1.6 V
- Current - On State (It (AV)) (Max):
- 16 A
- Current - On State (It (RMS)) (Max):
- 25 A
- Current - Hold (Ih) (Max):
- 50 mA
- Current - Off State (Max):
- 5 µA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 300A, 314A
- SCR Type:
- Standard Recovery
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
TN2540-600G FAQ
1.How can I place an order for TN2540-600G through Aetrix?
Please submit a Request for Quotation (RFQ) for TN2540-600G 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 TN2540-600G reliable?
The price and inventory of TN2540-600G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TN2540-600G is usually 5 days.
3.What payment methods are accepted for TN2540-600G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TN2540-600G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TN2540-600G?
TN2540-600G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TN2540-600G 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 TN2540-600G?
For technical support, including TN2540-600G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TN2540-600G requirements.
6.How does Aetrix verify that TN2540-600G is sourced from the original manufacturer or authorized distributors?
All TN2540-600G 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 TN2540-600G meets industry standards.
7.What is the process for return or replacement of TN2540-600G?
All TN2540-600G units undergo pre-shipment inspection (PSI). If there is an issue with TN2540-600G, 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 TN2540-600G part is unused and in its original packaging.
Return procedure for TN2540-600G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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