P5103AC Equivalent & Substitute Parts

Part Overview

The P5103AC is a 420V off-state, 150A peak pulse TVS thyristor manufactured by Littelfuse Inc. in the SIDACtor® series. This component is designed for transient voltage suppression applications requiring three-element configuration in a TO-220 modified package. The P5103AC is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

P5103AC

Littelfuse Inc.In Stock: 713P5103AC Datasheet

Current PartRFQ

P5103ACL

Littelfuse Inc.In Stock: 5475P5103ACL Datasheet

DirectRFQ

P5103ACLRP

Littelfuse Inc.In Stock: 1199P5103ACLRP Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P5103AC is determined by electrical and mechanical parameter equivalence. The critical parameters defining substitutability are:

• Voltage - Breakover: 600V
• Voltage - Off State: 420V
• Voltage - On State: 8V
• Current - Peak Pulse (8/20µs): 150A
• Current - Peak Pulse (10/1000µs): 45A
• Current - Hold (Ih): 150mA
• Number of Elements: 3
• Package / Case: 3-SIP
• Mounting Type: Through Hole
• Supplier Device Package: TO-220 Modified

Both substitute parts, P5103ACL and P5103ACLRP, maintain identical electrical specifications and mechanical configuration to the P5103AC. The primary distinction between substitutes is packaging format: P5103ACL is supplied in standard packaging, while P5103ACLRP is supplied in Tape & Reel format for automated assembly processes.

Parameter Comparison

Engineering Selection Recommendations

Both P5103ACL and P5103ACLRP are direct functional equivalents to the obsolete P5103AC, with identical electrical and mechanical specifications. Selection between the two active substitutes depends on procurement and assembly requirements:

P5103ACL is suitable for applications requiring standard packaging formats and manual or semi-automated assembly processes.

P5103ACLRP is suitable for high-volume production environments utilizing automated pick-and-place assembly, as it is supplied in Tape & Reel format.

Both substitute parts are ROHS3 compliant and REACH unaffected, providing improved regulatory compliance compared to the original P5103AC. Inventory availability is higher for both substitutes, with P5103ACL maintaining 5439 units and P5103ACLRP maintaining 1162 units in stock.

Frequently Asked Questions (FAQ)

Q: Can P5103ACL or P5103ACLRP be used as direct replacements for P5103AC in existing designs?

A: Yes. Both parts maintain identical electrical specifications (600V breakover, 420V off-state, 150A peak pulse current) and mechanical configuration (3-SIP, TO-220 modified package, through-hole mounting). No circuit modifications are required.

Q: What is the difference between P5103ACL and P5103ACLRP?

A: The electrical and mechanical specifications are identical. The difference is packaging format: P5103ACL uses standard packaging, while P5103ACLRP uses Tape & Reel format for automated assembly processes.

Q: Are there compliance differences between the original P5103AC and the substitute parts?

A: Yes. The P5103AC is RoHS non-compliant, while both P5103ACL and P5103ACLRP are ROHS3 compliant and REACH unaffected. This represents improved regulatory compliance for new designs or production runs.

Q: Which substitute part should be selected for automated assembly?

A: P5103ACLRP is supplied in Tape & Reel format and is designed for automated pick-and-place assembly processes.

Q: Which substitute part should be selected for manual or semi-automated assembly?

A: P5103ACL is supplied in standard packaging format suitable for manual or semi-automated assembly processes.

Q: Are the capacitance values identical across all three parts?

A: Yes. All three parts (P5103AC, P5103ACL, P5103ACLRP) have identical capacitance specifications of 40pF and 60pF.