TIC263N-S Equivalent & Substitute Parts

Part Overview

The TIC263N-S is a standard TRIAC manufactured by Bourns Inc., rated for 800V off-state voltage and 25A on-state current in a Through Hole SOT-93 package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The TIC263N-S serves as a general-purpose thyristor for AC switching applications requiring moderate current handling and voltage isolation.

Key Parameters

Parameter	Value
Voltage - Off State	800 V
Current - On State (It (RMS)) (Max)	25 A
Voltage - Gate Trigger (Vgt) (Max)	2 V
Current - Gate Trigger (Igt) (Max)	50 mA
Current - Hold (Ih) (Max)	40 mA
Operating Temperature Range	-40°C ~ 110°C (TC)
Mounting Type	Through Hole
Package / Case	TO-218-3
Configuration	Single
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the TIC263N-S is determined by the following critical parameters:

Voltage - Off State: Must equal 800 V
Current - On State (It (RMS)) (Max): Must be greater than or equal to 25 A
Mounting Type: Must be Through Hole
Package / Case: Must be TO-218-3 or compatible variant
Configuration: Must be Single
RoHS Status: Must maintain ROHS3 Compliance

The substitute parts listed below meet these core electrical and mechanical requirements, enabling direct functional replacement in applications designed for the TIC263N-S.

Parameter Comparison

Parameter	TIC263N-S (Main)	Q8025K6TP	Q8040K7TP
Manufacturer	Bourns Inc.	Littelfuse Inc.	Littelfuse
Voltage - Off State	800 V	800 V	800 V
Current - On State (It (RMS)) (Max)	25 A	25 A	40 A
Voltage - Gate Trigger (Vgt) (Max)	2 V	1.3 V	2 V
Current - Gate Trigger (Igt) (Max)	50 mA	80 mA	100 mA
Current - Hold (Ih) (Max)	40 mA	100 mA	100 mA
Operating Temperature Range	-40°C ~ 110°C (TC)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	TO-218-3	TO-218-3 Isolated Tab	TO-218-3 Isolated Tab
Triac Type	Standard	Alternistor - Snubberless	Alternistor - Snubberless
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Q8025K6TP is the direct functional equivalent to TIC263N-S, matching the 25A on-state current rating and 800V voltage specification. Both parts maintain ROHS3 compliance and Through Hole mounting. The Q8025K6TP is manufactured by Littelfuse Inc. and carries Active product status, ensuring long-term availability and supply chain continuity. The Alternistor - Snubberless design provides enhanced performance characteristics compared to the standard TRIAC topology of the original part.

Q8040K7TP is a higher-current variant rated for 40A on-state current, also manufactured by Littelfuse Inc. with Active product status. This part is suitable for applications requiring increased current capacity while maintaining the same 800V voltage rating and Through Hole TO-218-3 package configuration. Selection of Q8040K7TP is appropriate when design margins or future current requirements exceed the 25A specification of the TIC263N-S.

Both substitute parts are ROHS3 compliant and support extended operating temperature ranges (-40°C ~ 125°C) compared to the original part specification.

Frequently Asked Questions (FAQ)

Q: Can Q8025K6TP directly replace TIC263N-S in existing designs?

A: Yes. Q8025K6TP meets all critical substitution parameters: 800V off-state voltage, 25A on-state current rating, Through Hole mounting, TO-218-3 package compatibility, and ROHS3 compliance. The Alternistor - Snubberless design is functionally compatible with standard TRIAC applications.

Q: What is the difference between Q8025K6TP and Q8040K7TP?

A: The primary difference is on-state current rating. Q8025K6TP is rated for 25A, matching the TIC263N-S specification. Q8040K7TP is rated for 40A, providing higher current capacity. Both maintain 800V voltage rating and Through Hole TO-218-3 package configuration. Selection depends on application current requirements.

Q: Are there package compatibility considerations?

A: Both substitute parts use TO-218-3 Isolated Tab packaging, which is mechanically compatible with TO-218-3 footprints. The isolated tab design is a standard variant within the TO-218 family and does not require PCB layout modifications.

Q: How do gate trigger parameters affect substitution?

A: Q8025K6TP has a lower Voltage - Gate Trigger (Vgt) maximum of 1.3V compared to 2V for both TIC263N-S and Q8040K7TP. This indicates easier gate triggering characteristics. Current - Gate Trigger (Igt) and Current - Hold (Ih) values are higher in substitute parts, which is acceptable for applications designed for the original 50mA and 40mA specifications respectively.

Q: What is the significance of Alternistor - Snubberless design?

A: Alternistor - Snubberless TRIACs incorporate internal snubber networks, reducing the need for external snubber circuits in AC switching applications. This design approach is functionally compatible with standard TRIAC applications and may improve circuit performance and reduce component count.

Q: Are operating temperature ranges compatible?

A: Substitute parts support -40°C ~ 125°C operating range, which exceeds the TIC263N-S specification of -40°C ~ 110°C. This extended range provides additional design margin and is fully compatible with applications designed for the original part.

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