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BT137X-600G,127

4Q logic-level triac, 600V 8A, TO-220FP insulated, NXP BT137X

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Manufacturer Part：

BT137X-600G,127

Package：

SOT-186A / TO-220FP (10.4 x 4.6 x 15.6mm, insulated tab)

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Description

Product Overview

The BT137X-600G from NXP Semiconductors is a 4-quadrant logic level triac with 600V off-state voltage and 8A RMS on-state current. It features sensitive gate triggering in all four quadrants, making it suitable for direct interface with logic ICs and low-power gate drivers. The ,127 suffix indicates a specific packaging/ordering variant.

Key Specifications

  • Type: 4-Quadrant Logic Level Triac
  • Manufacturer: NXP Semiconductors
  • Repetitive Peak Off-State Voltage (VDRM): 600V
  • RMS On-State Current (ITRMS): 8A
  • Non-Repetitive Peak On-State Current (ITSM): 55A @ 20ms
  • Gate Trigger Current (IGT): 35mA max (Q1/Q3), 70mA max (Q2/Q4)
  • Gate Trigger Voltage (VGT): 1.5V max
  • Holding Current (IH): 20mA max
  • On-State Voltage (VTM): 1.65V max
  • dv/dt: 100V/us min (off-state), 10V/us min (commutation)
  • Package: SOT-186A (TO-220 FP – Full Pack insulated)
  • Operating Temp: -40C to +125C
  • Isolated Tab: Yes (Full Pack)
  • RoHS: Compliant

Features

  • 4-quadrant triggering enables direct logic-level drive
  • 600V/8A for medium-power AC switching
  • Isolated full-pack tab for safe heatsink mounting
  • Sensitive gate with 35mA max trigger current in Q1/Q3
  • High commutation dv/dt for inductive loads

Applications

  • AC motor speed control
  • Light dimmer circuits
  • Heating element control
  • Solid state relays
  • Home appliance power control

The BT137X-600G from NXP is a 4-quadrant logic-level triac rated for 600V/8A with sensitive gate triggering (35mA), insulated TO-220FP package, and full four-quadrant operation for AC motor control and solid state relay applications.

The triac is a bidirectional semiconductor switch that can conduct current in both directions when triggered. In 4-quadrant mode, it can be triggered in all four combinations of gate current polarity and MT2 voltage polarity (Q1: MT2+, G+; Q2: MT2+, G-; Q3: MT2-, G-; Q4: MT2-, G+). The logic-level gate requires only 35mA trigger current in Q1/Q3 quadrants, allowing direct drive from microcontrollers. Once triggered, the triac remains conducting until the main current drops below the holding current (20mA), which occurs naturally at AC zero-crossings.

Pin Name Function
1 MT1 Main Terminal 1 (reference terminal)
2 MT2 Main Terminal 2 (connected to insulated tab)
3 Gate Gate trigger input
  • AC motor speed control
  • Light dimmer circuits
  • Heating element control
  • Solid state relays
Model Manufacturer Key Spec Package
BT136-600G NXP 4Q triac 600V 4A SOT-82
Z0607MA NXP 4Q triac 600V 0.8A SOT-223
MAC97A8 onsemi 4Q triac 600V 0.6A TO-92
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