Q4X4RP TRIAC 400V 0.8A DO-214 Equivalent & Substitute Parts

Part Overview

The Q4X4RP is a standard TRIAC manufactured by Littelfuse, rated for 400V off-state voltage and 800mA on-state current in a surface mount DO-214 (Compak) package. This component is actively produced and RoHS3 compliant. Equivalent and substitute parts may be required due to supply chain constraints, regional availability, or specific application requirements where higher voltage or current ratings provide additional design margin.

Substiute Parts

Q4X4RP

LittelfuseIn Stock: 1048Q4X4RP Datasheet

Current PartRFQ

Z0109MN,135

WeEn SemiconductorsIn Stock: 1087Z0109MN,135 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Q4X4RP is determined by the following critical parameters:

• Voltage Rating (Off State): Substitute must meet or exceed 400V
• Current Rating (On State): Substitute must meet or exceed 800mA
• Gate Trigger Voltage (Vgt): Must not exceed 1.3V for gate drive compatibility
• Gate Trigger Current (Igt): Must not exceed 25mA for gate drive circuit compatibility
• Hold Current (Ih): Must not exceed 25mA
• Mounting Type: Surface mount required
• Package Compatibility: DO-214 or equivalent surface mount package
• Compliance: RoHS and REACH status must be maintained

The substitute part Z0109MN,135 from WeEn Semiconductors exceeds the minimum electrical requirements with higher voltage (600V) and current (1A) ratings while maintaining compatible gate trigger specifications and surface mount packaging.

Parameter Comparison

Engineering Selection Recommendations

The Z0109MN,135 from WeEn Semiconductors is electrically compatible with the Q4X4RP as a substitute part. The substitute meets all minimum electrical requirements with higher voltage and current ratings, providing additional design margin. Gate trigger specifications are identical or superior, ensuring gate drive circuit compatibility.

Both parts maintain active product status and compliance certifications (RoHS, REACH, EAR99). The primary consideration for substitution is package compatibility: the Z0109MN,135 uses SC-73 packaging (TO-261-4, TO-261AA) rather than the DO-214AA (Compak) package of the Q4X4RP. PCB layout and footprint verification is required before implementation.

Frequently Asked Questions (FAQ)

Q: Can Z0109MN,135 directly replace Q4X4RP in existing designs?

A: Electrical substitution is valid. Package footprint differences require PCB layout verification. The SC-73 package has different pin configuration and dimensions than DO-214AA.

Q: What are the key electrical differences between these parts?

A: Z0109MN,135 provides higher voltage (600V vs 400V) and current (1A vs 800mA) ratings. Gate trigger current and hold current are lower (10mA vs 25mA), which may reduce gate drive power requirements. Both maintain identical maximum gate trigger voltage (1.3V).

Q: Are both parts RoHS compliant?

A: Yes. Q4X4RP is RoHS3 compliant. Z0109MN,135 is RoHS compliant. Both meet regulatory requirements.

Q: What is the difference between Standard and Logic - Sensitive Gate TRIAC types?

A: Logic - Sensitive Gate TRIACs (Z0109MN,135) require lower gate trigger current for activation compared to Standard TRIACs (Q4X4RP). This can improve gate drive efficiency but requires verification that existing gate drive circuits are compatible.

Q: Does package difference affect electrical performance?

A: Package difference does not affect electrical performance. However, different physical dimensions and pin layouts require PCB footprint redesign and verification of thermal management characteristics.

Q: Are both parts actively manufactured?

A: Yes. Both Q4X4RP and Z0109MN,135 maintain active product status with current inventory availability.