P4KE6.8CA-B Equivalent & Substitute Parts

Part Overview

The P4KE6.8CA-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage clamping applications. This through-hole component operates across a wide temperature range (-55°C to 175°C) and provides bidirectional transient protection with a 10.5V maximum clamping voltage. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set.

Substiute Parts

P4KE6.8CA-B

Littelfuse Inc.In Stock: 863P4KE6.8CA-B Datasheet

Current PartRFQ

P4KE6.8CA

Taiwan Semiconductor CorporationIn Stock: 998P4KE6.8CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE6.8CA-B is determined by strict equivalence across 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
• Type: Zener diode, bidirectional (1 channel)
• Operating Temperature Range: -55°C to 175°C minimum
• RoHS3 Compliance: Required
• Series: P4KE base product family

Substitute parts must maintain identical voltage specifications, mechanical form factor, and regulatory compliance. Minor variations in peak pulse current (within the same power dissipation class) and breakdown voltage minimums are permissible when all other parameters remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

The P4KE6.8CA manufactured by Taiwan Semiconductor Corporation qualifies as a direct substitute for the P4KE6.8CA-B. Both components maintain identical electrical specifications across all critical voltage and current parameters, share the same through-hole axial package form factor, and meet ROHS3 compliance requirements. The substitute part demonstrates active product status and equivalent regulatory certifications (REACH Unaffected, EAR99 classification).

The primary distinction between the two parts is packaging format: the original P4KE6.8CA-B is supplied in bulk packaging, while the substitute P4KE6.8CA is supplied in tape and reel format. This packaging difference does not affect electrical performance or mechanical compatibility in circuit applications. Component selection should be based on procurement requirements, inventory availability, and supply chain considerations rather than technical performance factors.

Frequently Asked Questions (FAQ)

Q: Can the P4KE6.8CA (Taiwan Semiconductor) be used directly in place of the P4KE6.8CA-B (Littelfuse)?

A: Yes. Both components share identical electrical specifications, including reverse standoff voltage (5.8V), clamping voltage (10.5V), peak pulse current (39-40A range), and operating temperature range (-55°C to 175°C). The through-hole DO-204AL (DO-41) package is mechanically identical, and both meet ROHS3 compliance.

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

A: Bulk packaging supplies components loose or in bags, suitable for manual assembly or small-volume applications. Tape & reel packaging supplies components on continuous carrier tape with reel spools, optimized for automated pick-and-place assembly equipment. Electrical and mechanical performance are identical; packaging format affects only handling and assembly methodology.

Q: Are there any temperature or voltage derating considerations when substituting?

A: No. Both parts operate across the identical temperature range (-55°C to 175°C junction temperature) and maintain the same voltage specifications. No derating adjustments are required for substitution.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the P4KE6.8CA-B and P4KE6.8CA are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Regulatory compliance is equivalent.

Q: Is there a difference in peak pulse current between the two parts?

A: The P4KE6.8CA-B specifies 39A peak pulse current, while the P4KE6.8CA specifies 40A. Both maintain 400W peak pulse power dissipation. This 1A difference is within normal manufacturing tolerance for this component class and does not affect circuit compatibility.