P4KE30A-B Equivalent & Substitute Parts

Part Overview

The P4KE30A-B is an active Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose transient voltage protection applications. This unidirectional zener diode operates with a reverse standoff voltage of 25.6V and provides clamping protection at 41.4V maximum. The component is housed in a DO-204AL (DO-41) axial through-hole package and is ROHS3 compliant with unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or when design flexibility permits selection from qualified alternatives meeting identical electrical and mechanical specifications.

Substiute Parts

P4KE30A-B

LittelfuseIn Stock: 845P4KE30A-B Datasheet

Current PartRFQ

P4KE30A

Taiwan Semiconductor CorporationIn Stock: 24245P4KE30A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE30A-B is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 25.6V (identical)
• Voltage - Clamping (Max) @ Ipp: 41.4V (identical)
• Current - Peak Pulse (10/1000µs): 9.9A minimum (allows 10A)
• Power - Peak Pulse: 400W (identical)
• Package / Case: DO-204AL (DO-41) axial through-hole (identical)
• Operating Temperature Range: -55°C to 175°C (identical)
• Type: Zener, Unidirectional (identical)
• RoHS Status: ROHS3 Compliant (identical)

The P4KE30A manufactured by Taiwan Semiconductor Corporation qualifies as a direct substitute based on matching all electrical parameters and mechanical specifications. The peak pulse current specification of 10A exceeds the minimum 9.9A requirement, remaining within acceptable tolerance for this component category.

Parameter Comparison

Engineering Selection Recommendations

The P4KE30A manufactured by Taiwan Semiconductor Corporation is a qualified substitute for the P4KE30A-B. Both components maintain active product status and full ROHS3 compliance with REACH unaffected designation. Selection between these parts may be based on availability, packaging format preference (bulk versus tape & reel), or supply chain considerations, as electrical and mechanical performance characteristics are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the P4KE30A (Taiwan Semiconductor) be used as a direct replacement for P4KE30A-B (Littelfuse)?

A: Yes. Both components share identical voltage ratings (25.6V standoff, 41.4V clamping), power dissipation (400W peak pulse), operating temperature range (-55°C to 175°C), and DO-204AL through-hole package specifications. The peak pulse current of 10A meets or exceeds the 9.9A specification.

Q: What is the difference between bulk and tape & Reel packaging?

A: Bulk packaging is suitable for low-volume applications and manual assembly. Tape & Reel packaging is designed for automated pick-and-place assembly processes and high-volume production. Electrical and mechanical performance are identical; packaging selection depends on assembly methodology.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity level (MSL 1 - Unlimited) and ECCN/HTSUS classifications.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. The identical package footprint (DO-204AL axial through-hole), electrical specifications, and operating temperature range permit direct substitution without design modification.