Q2X3RP TRIAC Equivalent & Substitute Parts

Part Overview

The Q2X3RP is a Logic-Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 200V off-state voltage with 800mA on-state current in a DO-214 (Compak) surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	Q2X3RP
Manufacturer	Littelfuse Inc.
Category	Thyristors
Triac Type	Logic - Sensitive Gate
Voltage - Off State	200V
Current - On State (It RMS Max)	800mA
Voltage - Gate Trigger (Vgt Max)	1.3V
Current - Gate Trigger (Igt Max)	10mA
Current - Hold (Ih Max)	15mA
Operating Temperature	-40°C to 125°C (TJ)
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB (3 Leads), Compak
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the Q2X3RP is determined by the following criteria:

Mandatory Compatibility Parameters:

Triac Type: Logic - Sensitive Gate
Voltage - Gate Trigger (Vgt Max): 1.3V
Current - Gate Trigger (Igt Max): 10mA
Mounting Type: Surface Mount
Configuration: Single

Allowable Variation Parameters:

Voltage - Off State: Equal or higher rating acceptable
Current - On State (It RMS Max): Equal or higher rating acceptable
Current - Hold (Ih Max): Equal or higher rating acceptable
Package / Case: Compatible surface mount packages (DO-214AA or SC-73)
Product Status: Active preferred for long-term availability

Substitute parts must maintain or exceed the electrical performance of the Q2X3RP while preserving gate sensitivity characteristics and operating temperature range.

Parameter Comparison

Parameter	Q2X3RP	Q4X3RP	Q6X3RP	Z0109MN,135
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.	WeEn Semiconductors
Triac Type	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	200V	400V	600V	600V
Current - On State (It RMS Max)	800mA	800mA	800mA	1A
Voltage - Gate Trigger (Vgt Max)	1.3V	1.3V	1.3V	1.3V
Current - Gate Trigger (Igt Max)	10mA	10mA	10mA	10mA
Current - Hold (Ih Max)	15mA	15mA	15mA	10mA
Operating Temperature	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	125°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB (3 Leads)	DO-214AA, SMB (3 Leads)	DO-214AA, SMB (3 Leads)	TO-261-4, TO-261AA (SC-73)
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

Q4X3RP (Littelfuse Inc.): Direct upgrade within the Littelfuse Q-series TRIAC family. Maintains identical gate sensitivity (Vgt 1.3V, Igt 10mA) and on-state current (800mA) while providing increased voltage rating (400V). Identical DO-214AA package enables direct PCB substitution. Active product status ensures long-term availability. ROHS3 compliance maintained.

Q6X3RP (Littelfuse Inc.): Extended voltage rating (600V) within the same product family. Preserves all gate trigger parameters and on-state current specifications. DO-214AA package compatibility allows direct board-level replacement. Active product status with ROHS3 compliance. Suitable for applications requiring higher voltage margin.

Z0109MN,135 (WeEn Semiconductors): Manufacturer-recommended alternative with highest voltage rating (600V) and increased on-state current (1A). Maintains gate sensitivity specifications (Vgt 1.3V, Igt 10mA). Requires package change from DO-214AA to SC-73 (TO-261-4). Active product status with RoHS compliance. Lower hold current (10mA vs 15mA) and reduced operating temperature range (-40°C minimum not specified) require thermal design verification.

Frequently Asked Questions (FAQ)

Q: Can Q4X3RP or Q6X3RP be used as direct replacements for Q2X3RP?

A: Yes. Both Q4X3RP and Q6X3RP maintain identical gate sensitivity parameters (Vgt 1.3V, Igt 10mA), on-state current (800mA), and package format (DO-214AA). Higher voltage ratings provide design margin without affecting gate drive requirements or PCB layout.

Q: What is the key difference between Q6X3RP and Z0109MN,135?

A: Both provide 600V off-state voltage and maintain gate sensitivity. Q6X3RP uses DO-214AA packaging (same as Q2X3RP), while Z0109MN,135 uses SC-73 packaging (TO-261-4). Z0109MN,135 offers higher on-state current (1A vs 800mA) but has lower hold current (10mA vs 15mA) and does not specify -40°C minimum operating temperature.

Q: Is package compatibility critical for substitution?

A: Package compatibility depends on application requirements. Q4X3RP and Q6X3RP use identical DO-214AA packaging to Q2X3RP, enabling direct PCB substitution without layout changes. Z0109MN,135 uses SC-73 packaging, requiring PCB redesign and footprint modification.

Q: Why is Q2X3RP marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Q4X3RP and Q6X3RP are active alternatives from the same manufacturer with identical or superior electrical characteristics and current availability.

Q: Are all substitutes RoHS compliant?

A: Yes. Q4X3RP and Q6X3RP maintain ROHS3 compliance. Z0109MN,135 is RoHS compliant. All substitutes meet environmental regulatory requirements.

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