Qxx40xx Series - 40 Amp Alternistor (High Communication) Triacs

40 Amp Alternistor (High Communication) Triacs
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

40 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.

Alternistor type devices only operate in quadrants I, II, & III and are used in circuits requiring high dv/dt capability.

Features & Benefits:
  • RoHS Compliant
  • Glass - passivated junctions
  • Voltage capability up to 1000V
  • Surge capability up to 400A
  • Electrically isolated K & J -Packages are UL recognized for 2500Vrms

  • 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 extremely inductive loads requiring highest commutation performance.
  • Internally constructed isolated packages are offered for ease of heat sinking with highest isolation voltage.

Access specifications, certifications, check availability and order parts below

Catalog #SizeIT(RMS) (A)VDRM (V)IDRM@
di/dt @
Q4040J7TPTO-218 Isolated Tab404000.021001001001.8400150Eyelet LeadsCheckOrder
Q4040JH6TPTO-218 Isolated Tab404000.0058080801.8400150Eyelet LeadsCheckOrder
Q4040K5TPTO-218 Isolated Tab404000.0055050501.8400150Through Hole RadialCheckOrder
Q4040K7TPTO-218 Isolated Tab404000.021001001001.8400150Through Hole RadialCheckOrder
Q4040KH6TPTO-218 Isolated Tab404000.0058080801.8400150Through Hole RadialCheckOrder
Q6040J7TPTO-218 Isolated Tab406000.021001001001.8400150Eyelet LeadsCheckOrder
Q6040JH6TPTO-218 Isolated Tab406000.0058080801.8400150Eyelet LeadsCheckOrder
Q6040K4TO-218 Isolated Tab406000.025050501001.8400150Through Hole RadialCheck
Q6040K5TPTO-218 Isolated Tab406000.0055050501.8400150Through Hole RadialCheckOrder
Q6040K7TPTO-218 Isolated Tab406000.021001001001.8400150Through Hole RadialCheckOrder
Q6040KH6TPTO-218 Isolated Tab406000.0058080801.8400150Through Hole RadialCheckOrder
Q8040J7TPTO-218 Isolated Tab408000.021001001001.8400150Eyelet LeadsCheckOrder
Q8040JH6TPTO-218 Isolated Tab408000.0058080801.8400150Eyelet LeadsCheckOrder
Q8040K4TO-218 Isolated Tab408000.025050501001.8400150Through Hole RadialCheck
Q8040K5TPTO-218 Isolated Tab408000.0055050501.8400150Through Hole RadialCheckOrder
Q8040K7TPTO-218 Isolated Tab408000.021001001001.8400150Through Hole RadialCheckOrder
Q8040KH6TPTO-218 Isolated Tab408000.0058080801.8400150Through Hole RadialCheckOrder
QK040K7TPTO-218 Isolated Tab4010000.021001001001.8400150Through Hole RadialCheckOrder
QK040KH6TPTO-218 Isolated Tab4010000.0058080801.8400150Through Hole RadialCheckOrder
Obsolete: 2008 -09-01
Replaced By: Q2040J7TP
TO-218 Isolated Tab402000.21001001001.8400150Eyelet LeadsCheck
Obsolete: 2011 -12-31
Replaced By: Q4040J7TP
TO-218 Isolated Tab402000.21001001001.8400150Eyelet LeadsCheck
Obsolete: 2008 -09-01
Replaced By: Q2040K7TP
TO-218 Isolated Tab402000.21001001001.8400150Through Hole RadialCheck
Obsolete: 2011 -12-31
Replaced By: Q4040K7TP
TO-218 Isolated Tab402000.21001001001.8400150Through Hole RadialCheck
Obsolete: 2008 -09-01
Replaced By: Q4040J7TP
TO-218 Isolated Tab404000.21001001001.8400150Eyelet LeadsCheck
Obsolete: 2008 -09-01
Replaced By: Q4040K7TP
TO-218 Isolated Tab404000.21001001001.8400150Through Hole RadialCheck
Obsolete: 2008 -09-01
Replaced By: Q6040J7TP
TO-218 Isolated Tab406000.21001001001.8400150Eyelet LeadsCheck
Obsolete: 2008 -09-01
Replaced By: Q6040K7TP
TO-218 Isolated Tab406000.21001001001.8400150Through Hole RadialCheck
Obsolete: 2008 -09-01
Replaced By: Q8040J7TP
TO-218 Isolated Tab408000.21001001001.8400150Eyelet LeadsCheck
Obsolete: 2008 -09-01
Replaced By: Q8040K7TP
TO-218 Isolated Tab408000.21001001001.8400150Through Hole RadialCheck
Obsolete: 2008 -09-01
Replaced By: QK040K7TP
TO-218 Isolated Tab4010000.21001001001.8400150Through Hole RadialCheck

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