Littelfuse Qxx16xHx Series User Manual
Qxx15xx & qxx16xhx series, Teccor, Brand thyristors

121
Revised: 09/23/13
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Teccor
®
brand Thyristors
15 Amp Standard & 16 Amp Alternistor (High Commutation) Triacs
Qxx15xx & Qxx16xHx Series
Qxx15xx & Qxx16xHx Series
Description
15 Amp and 16 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 type devices normally operate in Quadrants I & III 
triggered from AC line. 
Alternistor type devices only operate in quadrants I, II, & III 
and are used in circuits requiring high dv/dt capability.
Main Features
Symbol
Value
Unit
I
T(RMS)
15 & 16
A
V
DRM
/ V
RRM
400 to 1000
V
I
GT (Q1)
10 to 80
mA
Features & Benefits
t3P)4$PNQMJBOU
t(MBTToQBTTJWBUFE
junctions
t7PMUBHFDBQBCJMJUZVQUP
1000 V
t4VSHFDBQBCJMJUZVQUP
200 A
t&MFDUSJDBMMZJTPMBUFE
“L-Package” is UL 
recognized for 2500Vrms
t4PMJETUBUFTXJUDIJOH
eliminates arcing or
contact bounce that 
create voltage transients
t/PDPOUBDUTUPXFBS
out from reaction of 
switching events
t3FTUSJDUFE PSMJNJUFE3'*
generation, depending 
on activation point in sine 
wave
t3FRVJSFTPOMZBTNBMM
gate activation pulse in 
each half-cycle
Schematic Symbol
Applications
Excellent for AC switching and phase control applications 
such as heating, lighting, and motor speed controls.
Typical applications are AC solid-state switches, light 
dimmers, power tools, lawn care equipment, home/brown 
goods and white goods appliances.
Alternistor Triacs (no snubber required) are used in 
applications with extremely inductive loads requiring 
highest commutation performance.
Internally constructed isolated packages are offered for 
ease of heat sinking with highest isolation voltage.
MT2
MT1
G
Agency Approval
Agency
Agency File Number
®
L Package : E71639
