P3403ACRP Equivalent & Substitute Parts

Part Overview

The P3403ACRP is a three-element SIDACtor® thyristor transient voltage suppressor manufactured by Littelfuse Inc., designed for 300V off-state voltage protection with 400A peak pulse current capability in a TO-220 Modified package. This part is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The P3403ACRP maintains full electrical and mechanical compatibility with active production alternatives that share identical electrical ratings and package specifications.

Substiute Parts

P3403ACRP

Littelfuse Inc.In Stock: 831P3403ACRP Datasheet

Current PartRFQ

P3403ACL

Littelfuse Inc.In Stock: 2394P3403ACL Datasheet

DirectRFQ

P3403ACLRP

Littelfuse Inc.In Stock: 681P3403ACLRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P3403ACRP is determined by strict equivalence across all electrical and mechanical parameters. The substitute parts P3403ACL and P3403ACLRP maintain identical specifications for voltage ratings (400V breakover, 300V off-state, 8V on-state), current handling (400A peak pulse at 8/20µs, 100A at 10/1000µs, 150mA hold current), element count (3), capacitance values (45pF, 65pF), and package configuration (3-SIP, TO-220 Modified, through-hole mounting). The substitution logic is based exclusively on these parameters; no additional technical criteria determine compatibility. The primary distinction between substitute parts is packaging format: P3403ACL is supplied in bulk packaging, while P3403ACLRP is supplied in tape and reel format.

Parameter Comparison

Engineering Selection Recommendations

Both P3403ACL and P3403ACLRP are active production alternatives to the obsolete P3403ACRP. Selection between these two substitutes depends on procurement and assembly requirements rather than electrical performance.

P3403ACL in bulk packaging is suitable for applications requiring standard component quantities with manual handling or conventional pick-and-place assembly processes.

P3403ACLRP in tape and reel format is suitable for high-volume automated assembly operations where component feeding and placement efficiency are required.

Both substitute parts carry ROHS3 compliance and REACH unaffected status, providing regulatory advantages over the non-compliant P3403ACRP. Electrical performance is identical across all three part numbers, ensuring direct functional equivalence in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can P3403ACL and P3403ACLRP be used interchangeably with P3403ACRP?

A: Yes. All three parts share identical electrical specifications (400V breakover, 300V off-state, 8V on-state, 400A peak pulse current, 150mA hold current) and mechanical configuration (3-SIP, TO-220 Modified package, through-hole mounting). The substitute parts are active production alternatives to the obsolete P3403ACRP.

Q: What is the difference between P3403ACL and P3403ACLRP?

A: The electrical and mechanical specifications are identical. The difference is packaging format: P3403ACL is supplied in bulk packaging, while P3403ACLRP is supplied in tape and reel format. Selection depends on assembly process requirements and procurement volume.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both P3403ACL and P3403ACLRP are ROHS3 compliant, whereas the original P3403ACRP is RoHS non-compliant. This provides regulatory compliance improvement when transitioning to substitute parts.

Q: Do the substitute parts have the same capacitance values?

A: Yes. All three parts maintain identical capacitance specifications of 45pF and 65pF.

Q: Can these parts be used in automated assembly with tape and reel packaging?

A: P3403ACLRP is specifically formatted for automated assembly in tape and reel packaging. P3403ACL in bulk packaging requires manual handling or conventional assembly processes.