P6KE400A-B Equivalent & Substitute Parts

Part Overview

The P6KE400A-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This through-hole component operates with a reverse standoff voltage of 342V and provides clamping at 548V maximum, with a peak pulse current rating of 1.1A. The part is currently in active production status and maintains full RoHS3 compliance. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

P6KE400A-B

Littelfuse Inc.In Stock: 1122P6KE400A-B Datasheet

Current PartRFQ

P6KE400A

Taiwan Semiconductor CorporationIn Stock: 35231P6KE400A Datasheet

DirectRFQ

P6KE400A

Taiwan Semiconductor CorporationIn Stock: 35231P6KE400A Datasheet

DirectRFQ

P6KE400A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 4579P6KE400A-E3/54 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6KE400A-B are qualified based on electrical and mechanical parameter equivalence. The critical parameters determining substitution eligibility are:

• Voltage - Reverse Standoff (Typ): 342V
• Voltage - Breakdown (Min): 380V
• Voltage - Clamping (Max) @ Ipp: 548V
• Current - Peak Pulse (10/1000µs): 1.1A
• Power - Peak Pulse: 600W
• Mounting Type: Through Hole
• Package / Case: DO-204AC, DO-15, Axial
• Type: Zener, Unidirectional (1 channel)
• RoHS Status: ROHS3 Compliant

All identified substitute parts maintain identical electrical specifications and mechanical compatibility. Packaging variations (Bulk vs. Cut Tape) and manufacturer differences do not affect functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status and full RoHS3 compliance, ensuring regulatory and supply chain continuity. Selection between the P6KE400A-B (Littelfuse), P6KE400A (Taiwan Semiconductor), and P6KE400A-E3/54 (Vishay) is determined by availability, packaging preference, and procurement requirements rather than electrical or mechanical differences.

The P6KE400A-B is supplied in Bulk packaging, while both substitute parts are available in Cut Tape (CT) format. The Littelfuse and Vishay variants specify operating temperature ranges (-55°C ~ 175°C TJ), whereas the Taiwan Semiconductor variant does not provide this specification in the available data. All parts are suitable for general-purpose transient voltage suppression applications with identical electrical performance.

Frequently Asked Questions (FAQ)

Q: Can P6KE400A (Taiwan Semiconductor) be used as a direct replacement for P6KE400A-B (Littelfuse)?

A: Yes. Both parts are electrically and mechanically equivalent, with identical voltage ratings (342V standoff, 548V clamping), current ratings (1.1A peak pulse), and package specifications (DO-204AC/DO-15 axial through-hole). The primary difference is packaging format (Bulk vs. Cut Tape) and manufacturer.

Q: What is the difference between P6KE400A-E3/54 and P6KE400A-B?

A: The P6KE400A-E3/54 is manufactured by Vishay under the TransZorb® series designation and is supplied in Cut Tape packaging. Electrical specifications and mechanical compatibility are identical. The "-E3/54" suffix indicates Vishay's internal packaging and tape configuration.

Q: Are there any temperature rating differences between these parts?

A: The P6KE400A-B and P6KE400A-E3/54 both specify operating temperature ranges of -55°C ~ 175°C (TJ). The Taiwan Semiconductor P6KE400A variant does not provide an operating temperature specification in the available technical data.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes, all three parts use identical through-hole axial package configurations (DO-204AC/DO-15). PCB footprints and lead spacing are compatible across all variants.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8541.10.0080. Moisture sensitivity level is 1 (Unlimited) for all variants.