Thyristors
25 Amp Standard & Alternistor (High Commutation) Triacs
Qxx25xx & Qxx25xHx Series
RoHS
Description
This 25 Amp bi-directional solid state switch series is
designed for AC switching and phase control applications
such as motor speed and temperature modulation controls,
lighting controls, and static switching relays.
Standard alternistor triac components operate with
in-phase signals in Quadrants I or III and ONLY unipolar
negative gate pulses for Quadrant II or III. The alternistor
triac will not operate in Quadrant IV.
Agency Approval
Agency
Agency File Number
TO-220L, TO-218K, TO-218J
Main Features
Symbol
IT(RMS)
VDRM/ VRRM
IGT
Value
25
1000
50 or 80
Schematic Symbol
Unit
A
V
mA
MT2
MT1
G
Features & Benefits
• RoHS compliant
• Glass – passivated
junctions
• Voltage capability up
to 1000 V
• S urge capability up
to 250A at 60 Hz
half cycle
Applications
Excellent for AC switching and phase control applications
such as heating, lighting, and motor speed controls.
Typical applications are AC solid-state switches, industrial
power tools, exercise equipment, white goods and
commercial appliances.
Alternistor Triacs (no snubber required) are used in
applications with high inductive loads requiring the highest
commutation performance.
Internally constructed isolated packages are offered for
ease of heat sinking with highest isolation voltage.
Additional Information
Datasheet
Resources
Samples
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/16/18