P4KE6.8A-B Equivalent & Substitute Parts

Part Overview

The P4KE6.8A-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 across a wide temperature range and provides peak pulse power dissipation of 400W. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when electrical and mechanical parameters align within the specified tolerances for this product category, enabling direct replacement in circuit designs without functional degradation.

Substiute Parts

P4KE6.8A-B

Littelfuse Inc.In Stock: 928P4KE6.8A-B Datasheet

Current PartRFQ

P4KE6.8A

Taiwan Semiconductor CorporationIn Stock: 300261P4KE6.8A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE6.8A-B is determined by strict alignment of the following critical parameters:

• Voltage - Reverse Standoff (Typ): 5.8V
• Voltage - Clamping (Max) @ Ipp: 10.5V
• Package / Case: DO-204AL (DO-41), Axial through-hole configuration
• Mounting Type: Through Hole
• Type: Zener, Unidirectional (1 channel)
• Operating Temperature Range: -55°C to 175°C (TJ)
• RoHS Status: ROHS3 Compliant

The P4KE6.8A manufactured by Taiwan Semiconductor Corporation qualifies as a direct substitute based on matching all critical electrical and mechanical parameters within the allowed tolerance band for this product category.

Parameter Comparison

Engineering Selection Recommendations

The P4KE6.8A manufactured by Taiwan Semiconductor Corporation is a qualified substitute for the P4KE6.8A-B. Both components maintain identical electrical performance specifications across all critical parameters including voltage clamping, peak pulse current, and power dissipation. Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

The primary distinction between the two parts is packaging format: the original P4KE6.8A-B is supplied in bulk packaging, while the substitute P4KE6.8A is supplied in Tape & Reel (TR) format. This packaging difference does not affect electrical or mechanical compatibility in circuit applications. Both components utilize identical DO-204AL (DO-41) axial through-hole package geometry and are rated for the same operating temperature range.

Selection between these parts should be based on procurement requirements, inventory availability, and packaging format preferences for manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can the P4KE6.8A (Taiwan Semiconductor) be used as a direct replacement for the P4KE6.8A-B (Littelfuse)?

A: Yes. Both components share identical electrical specifications for voltage clamping, breakdown voltage, peak pulse current, and power dissipation. The physical package geometry (DO-204AL, DO-41 axial) and mounting type (through-hole) are identical, enabling direct circuit substitution.

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

A: Bulk packaging supplies components loose for manual handling and placement. Tape & Reel (TR) packaging supplies components on continuous tape for automated pick-and-place assembly equipment. The electrical and mechanical properties of the component itself remain unchanged; the difference is in manufacturing process compatibility and handling method.

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

A: No. Both the P4KE6.8A-B and P4KE6.8A maintain ROHS3 compliance and REACH unaffected status. Moisture sensitivity level (MSL) is rated as 1 (Unlimited) for both parts.

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by matching: Voltage - Reverse Standoff (5.8V), Voltage - Clamping (10.5V), Current - Peak Pulse (39-40A range), Power - Peak Pulse (400W), Operating Temperature Range (-55 to 175°C), Package geometry (DO-204AL, DO-41), and Mounting Type (Through Hole). All these parameters are matched between the original and substitute part.

Q: Does the 1A difference in peak pulse current (39A vs 40A) affect compatibility?

A: No. The substitute part's 40A peak pulse current rating exceeds the original specification of 39A, providing equivalent or superior performance in transient voltage suppression applications. This represents a design margin improvement rather than a limitation.