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STMicroelectronics BTB08-600SRG
- Part No.:
- BTB08-600SRG
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-220-3
- Datasheet:
-
BTB08-600SRG.pdf
- Description:
- TRIAC SENS GATE 600V 8A TO220
- Quantity:
- Payment:
- Shipping:
Inventory:42
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Product details
Overview
BTB08-600SRG from STMicroelectronics is a snubberless, logic-level triac rated for 8 A RMS on-state current and 600 V repetitive peak off-state voltage (VDRM/VRRM), with 10 mA maximum gate trigger current (IGT). It operates in three quadrants, supports phase control and zero-crossing switching, and is designed for direct interface with microcontrollers in AC load control circuits such as motor speed controllers and light dimmers.
For engineers reviewing the BTB08-600SRG datasheet, BTB08-600SRG pinout, BTB08-600SRG application, or BTB08-600SRG equivalent, key selection criteria include its 600 V blocking capability, 10 mA logic-level gate sensitivity, snubberless commutation performance for inductive loads, and TO-220AB package with non-insulated tab.
Technical Context
This triac uses a three-quadrant triggering architecture optimized for reduced false triggering and improved noise immunity in noisy industrial environments. Its snubberless design enables reliable commutation on inductive loads without external RC networks, supported by a minimum critical rate of rise of off-state voltage (dV/dt) of 400 V/µs at 125 °C.
The device features a low 1.55 V maximum on-state voltage (VTM) at 11 A and 25 °C, and a dynamic on-state resistance (RD) of ≤50 mΩ at 125 °C - enabling efficient power handling with minimal conduction loss in compact thermal designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 8 A RMS - supports continuous AC load switching up to 1.8 kW at 230 VAC with appropriate heatsinking. |
| VDRM / VRRM | 600 V - withstands peak line voltages in 230 VAC mains applications with 2× safety margin. |
| IGT (max) | 10 mA - compatible with 3.3 V/5 V MCU GPIOs without external driver transistors. |
| dV/dt (min) | 400 V/µs at Tj = 125 °C - eliminates need for snubber circuits with inductive loads like motors and solenoids. |
| VTM (max) | 1.55 V at ITM = 11 A - limits conduction power loss to ≤17 W at full RMS current, easing thermal management. |
| Rth(j-c) | 1.6 °C/W - enables 8 A operation with junction temperature ≤125 °C using a modest heatsink at TC = 110 °C. |
| ITSM (50 Hz) | 80 A for 20 ms - handles motor inrush currents and short-duration overloads without failure. |
Pinout & Package
BTB08-600SRG is housed in a TO-220AB package with non-insulated tab (A2 terminal), suitable for direct mounting to grounded heatsinks. The package meets ECOPACK2 environmental compliance and features lead-free plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Main Terminal 1 | Reference terminal for gate triggering; connected to load return or neutral side in AC switching. |
| A2 | Main Terminal 2 | High-side AC line connection; electrically tied to metal tab - must be isolated from PCB ground if heatsink is grounded. |
| G | Gate | Low-energy control input; triggers conduction when ≥10 mA pulse applied between G and A1 (QI/QII/QIII). |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless commutation | Guaranteed dV/dt ≥400 V/µs at 125 °C - enables direct drive of inductive loads without external RC snubbers. |
| Logic-level gate sensitivity | IGT ≤10 mA - allows direct interfacing with 3.3 V or 5 V microcontrollers without level-shifting or buffer stages. |
| Three-quadrant operation | Triggers only in quadrants I, II, and III - suppresses false turn-on from noise in quadrant IV, improving system reliability. |
| Robust thermal performance | Rth(j-c) = 1.6 °C/W - supports 8 A RMS operation with simple heatsink solutions in space-constrained industrial enclosures. |
| ECOPACK2 compliance | Halogen-free epoxy, lead-free terminations - meets RoHS and REACH requirements for global industrial deployments. |
Applications
| Motor Speed Control | Light Dimming |
|---|---|
|
Use Scenario: Variable-speed control of single-phase universal or induction motors in power tools and HVAC blowers. IC Role / Device Role / Timing Role: Main AC power switch executing phase-angle control based on MCU-generated firing angle signals. Use Value: Snubberless operation prevents voltage spikes during motor coil de-energization, eliminating snubber component count and board area. |
Use Scenario: Mains-powered residential and commercial LED/incandescent lamp dimming systems. IC Role / Device Role / Timing Role: Bidirectional AC switch synchronized to zero-crossing detection for smooth brightness adjustment. Use Value: 10 mA IGT ensures compatibility with low-power MCU outputs, reducing BOM cost versus discrete driver solutions. |
| Heating Regulation | Static Relay Replacement |
|
Use Scenario: Solid-state temperature control in industrial ovens, soldering stations, and water heaters. IC Role / Device Role / Timing Role: ON/OFF or phase-control switch modulating resistive heater power under PID loop supervision. Use Value: 600 V VDRM provides margin against 230 VAC line surges, ensuring long-term reliability in high-temperature environments. |
Use Scenario: Electromechanical relay replacement in PLC output modules and building automation panels. IC Role / Device Role / Timing Role: Fail-safe AC load isolation device controlled via optocoupler-isolated logic signals. Use Value: TO-220AB package allows direct bolt-down to chassis ground, simplifying EMI filtering and thermal path design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triac-based AC switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BTA08-600SWRG | TO-220AB insulated tab; same 8 A/600 V rating and 10 mA IGT, but includes 2500 VRMS isolation between tab and A2. | Required where heatsink must be at different potential than A2 (e.g., floating DC bus references). | Select when electrical isolation between heatsink and main terminal is mandatory per safety standards. |
| T835-600B | DPAK package; 35 mA IGT; 800 V VDRM; snubberless but not logic-level - requires gate driver stage. | Suitable for space-constrained PCBs where surface-mount assembly is preferred and higher voltage margin is needed. | Select for SMT production and 800 V line surge immunity, accepting added gate drive complexity. |
Compared with BTB08-600SRG, BTA08-600SWRG adds tab isolation at no gate sensitivity trade-off, while T835-600B sacrifices logic-level drive for smaller footprint and higher voltage rating - making BTB08-600SRG optimal for cost-sensitive, through-hole MCU-driven AC control.
Availability
BTB08-600SRG is available at Aetrix Electronics and suitable for motor speed control, light dimming, heating regulation, and static relay replacement requiring stable component supply across industrial OEM and embedded design cycles.
Supply support for BTB08-600SRG 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, specializing in power management, analog, and microcontroller technologies for industrial, automotive, and consumer markets.
BTB08-600SRG belongs to ST's high-reliability snubberless triac product line, engineered specifically for robust AC load switching in cost-sensitive industrial controls where simplicity, thermal efficiency, and inductive load resilience are critical.
FAQ
What is the maximum junction temperature for BTB08-600SRG?
The maximum operating junction temperature is +125 °C, as specified in Table 1 of the DS2114 datasheet. Operation beyond this limit risks irreversible degradation of the silicon die and premature failure. Thermal design must ensure Rth(j-c) × (Pdissipated) + TC ≤ 125 °C, with TC measured at the case surface near the tab.
Can BTB08-600SRG drive an inductive load without a snubber circuit?
Yes - BTB08-600SRG is a certified snubberless triac with guaranteed dV/dt ≥400 V/µs at 125 °C and (dl/dt)c ≥5.4 A/ms, enabling reliable commutation on inductive loads like motors and transformers without external RC snubbers, provided gate drive meets IGT and di/dt requirements.
Is the TO-220AB tab of BTB08-600SRG electrically insulated?
No - the TO-220AB package used in BTB08-600SRG has a non-insulated tab directly connected to the A2 terminal. Electrical isolation between the heatsink and A2 must be achieved externally using insulating washers and bushings if the heatsink is grounded or at a different potential.
What is the recommended gate resistor value for MCU-driven operation?
For a 5 V MCU GPIO driving BTB08-600SRG, a 330 Ω series resistor limits peak gate current to ~15 mA (within 4 A IGM absolute max), satisfies 10 mA IGT requirement, and dampens ringing. At 3.3 V, use 220 Ω. Resistor power rating should exceed 0.1 W for repetitive triggering.
BTB08-600SRG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Triac Type:
- Logic - Sensitive Gate
- Voltage - Off State:
- 600 V
- Current - On State (It (RMS)) (Max):
- 8 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 80A, 84A
- Current - Gate Trigger (Igt) (Max):
- 10 mA
- Current - Hold (Ih) (Max):
- 15 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
BTB08-600SRG FAQ
1.How can I place an order for BTB08-600SRG through Aetrix?
Please submit a Request for Quotation (RFQ) for BTB08-600SRG 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 BTB08-600SRG reliable?
The price and inventory of BTB08-600SRG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BTB08-600SRG is usually 5 days.
3.What payment methods are accepted for BTB08-600SRG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BTB08-600SRG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BTB08-600SRG?
BTB08-600SRG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BTB08-600SRG 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 BTB08-600SRG?
For technical support, including BTB08-600SRG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BTB08-600SRG requirements.
6.How does Aetrix verify that BTB08-600SRG is sourced from the original manufacturer or authorized distributors?
All BTB08-600SRG 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 BTB08-600SRG meets industry standards.
7.What is the process for return or replacement of BTB08-600SRG?
All BTB08-600SRG units undergo pre-shipment inspection (PSI). If there is an issue with BTB08-600SRG, 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 BTB08-600SRG part is unused and in its original packaging.
Return procedure for BTB08-600SRG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BTB08-600SRG Tags
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Z0103NN5AA4
STMicroelectronics
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Littelfuse Inc.
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Z0103MNT1G
Littelfuse Inc.
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BTA08-600CWRG
STMicroelectronics
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