2P4M TO-126 Transistor – KSH 10 at HIMASTORES Mombasa – best electronics in Kenya
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2P4M TO-126 Transistor

SKU: HMJ849 Category: Transistors
KSH 10.00
In Stock

Product Description

2P4M TO-126 Transistor

2A Sensitive Gate Silicon Controlled Rectifier (SCR)

The 2P4M is a silicon controlled rectifier (SCR), commonly referred to as a unidirectional thyristor. It is a robust, 2Arated switching device housed in a TO126 package, ideal for controlling power in a wide range of applications.

Device Type: Unidirectional Thyristor (SCR)
Package: TO-126
Peak Repetitive Off-State Voltage (VDRM): 400V to 600V (depending on the manufacturer)
Ensure correct pin identification - the standard configuration is K (Cathode), A (Anode), G (Gate)
Do not exceed the maximum rated current and voltage to prevent permanent damage

Key Technical Specifications

ParameterTypical ValueNotes
On-State RMS Current (IT(RMS))2AMaximum continuous current
Peak Off-State Voltage (VDRM)400V - 600VBlocking voltage; check datasheet for exact variant
Surge Current (ITSM)20ANon-repetitive peak current for one cycle
Gate Trigger Current (IGT)90µA - 200µASensitive gate for low-power control circuits
Gate Trigger Voltage (VGT)0.6V - 0.9VVoltage required to trigger the gate
Holding Current (IH)3mA - 5mAMinimum current required to keep the SCR on
On-State Voltage (VTM)1.6V - 2.2VForward voltage drop at rated current

= Key Features =

Sensitive Gate - Low trigger current (as low as 90µA) allows for direct control by logic ICs and microcontrollers

High Surge Current - Can handle 20A surge, making it robust for demanding applications

Glass Passivated Surface - Ensures reliability and uniformity of performance

Low Holding Current Enables efficient operation in lowpower circuits

= Applications =

  • Motor control for small appliances and power tools
  • Light dimmers and lamp controllers
  • Solid-state relays and switches
  • Overvoltage crowbar protection in power supplies
  • Ignition circuits for motorcycles and gas appliances
  • Battery chargers
  • Temperature control for appliances
Sensitive Gate - Enables direct drive from microcontrollers and logic ICs
High Voltage Capability - Available variants rated up to 600V for diverse applications

√ 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 2P4M SCR (TO-126 Package)
For reliable triggering, ensure the gate pulse is sufficient to meet the IGT specifications
This device is also available in TO-202 package from some manufacturers
For direct replacements, confirm the voltage (VDRM) rating of your specific variant
The 2P4M's sensitive gate and 2A current rating make it a versatile choice for many switching applications
When used in AC circuits, an SCR will only conduct during one half of the cycle

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

-Avoid exceeding the maximum junction temperature of 125°C

-Avoid using a snubber circuit on the main terminals for inductive loads to prevent false triggering