BT134 TO-126 Transistor – KSH 10 at HIMASTORES Mombasa – best electronics in Kenya
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BT134 TO-126 Transistor

SKU: HMJ848 Category: Transistors
KSH 10.00
In Stock

Product Description

BT134 TO-126 Transistor (Triac)

4A Sensitive Gate Bidirectional Triac for AC Power Control

The BT134 is a highperformance, sensitivegate triac housed in a TO126 package. It is designed for bidirectional AC switching and phase control in a wide range of lowpower applications. Its sensitive gate allows for direct control by microcontrollers and logic ICs [citation:8][citation:10].

Device Type: Bidirectional Triac (Triode for Alternating Current)
Package: TO-126
RMS On-State Current (IT(RMS)): 4A [citation:1][citation:9]
Repetitive Peak Off-State Voltage (VDRM): Up to 600V (dependent on variant) [citation:1][citation:2]
Ensure correct pin identification the standard TO126 configuration is T1, T2, Gate (G) [citation:1]
Do not exceed the maximum rated current and voltage to prevent permanent damage

Key Technical Specifications

ParameterTypical ValueNotes
RMS On-State Current (IT(RMS))4AMaximum continuous current [citation:1][citation:9]
Peak Off-State Voltage (VDRM)600VBlocking voltage; 800V variants available [citation:1][citation:11]
Non-Repetitive Surge Current (ITSM)25APeak current for one cycle (t=20ms) [citation:1]
Gate Trigger Current (IGT)7mA - 25mAVaries by quadrant and variant [citation:9]
Gate Trigger Voltage (VGT)1.45VVoltage required to trigger the gate [citation:9]
Holding Current (IH)15mAMinimum current to keep the triac on [citation:9]

= Key Features =

Sensitive Gate - Allows for direct control by microcontrollers and logic circuits [citation:8][citation:10]

High Surge Current - 25A capacity ensures robustness for demanding applications [citation:1]

Glass Passivated Junction - Provides reliability and high thermal cycling performance [citation:12]

Bidirectional Operation - Conducts current in both directions for AC control [citation:1]

= Applications =

  • Motor control for small appliances and power tools [citation:1]
  • Light dimmers and lamp controllers [citation:1]
  • Solid-state relays and switching circuits [citation:1]
  • Heating control for domestic and industrial use [citation:1]
  • Home appliances such as washing machines and microwave ovens [citation:7]
Sensitive Gate - Direct drive from microcontrollers and logic ICs without additional drivers [citation:8][citation:10]
High Voltage Capability - 600V rating suitable for mains voltage applications [citation:1]

√ Ready to use Standard TO126 package for easy mounting

√ Sensitive gate - Low trigger current for simple control circuits

√ Highly reliable Glasspassivated surface for stable operation

Package Includes

  1. 1x BT134 Triac (TO-126 Package)
For reliable triggering, ensure the gate current meets the IGT specifications for your operating quadrant [citation:9]
This device is also available in SOT-82 package from some manufacturers [citation:8]
For direct replacements, confirm the voltage (VDRM) rating of your specific variant
The BT134's sensitive gate and 4A current rating make it a versatile choice for AC power control applications
This triac is capable of triggering in all four quadrants of operation [citation:8][citation:9]

-Avoid exceeding the maximum junction temperature of 125°C [citation:1]

-Avoid using without a suitable snubber circuit for inductive loads to prevent false triggering

Avoid applying a gate voltage that exceeds the maximum gate ratings consult the datasheet