P4KE7.5C-B Equivalent & Substitute Parts

Part Overview

The P4KE7.5C-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 6.4V reverse standoff voltage with an 11.87V maximum clamping voltage and 36.3A peak pulse current capability in a through-hole DO-204AL (DO-41) package. The product is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing design support and production requirements.

Substiute Parts

P4KE7.5C-B

Littelfuse Inc.In Stock: 1171P4KE7.5C-B Datasheet

Current PartRFQ

P4KE7.5CA

Taiwan Semiconductor CorporationIn Stock: 30325P4KE7.5CA Datasheet

DirectRFQ

P4KE7.5CA-B

LittelfuseIn Stock: 866P4KE7.5CA-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE7.5C-B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 6.4V
• Voltage - Clamping (Max) @ Ipp: Within acceptable tolerance range
• Current - Peak Pulse (10/1000µs): Minimum 36.3A
• Power - Peak Pulse: 400W
• Mounting Type: Through Hole
• Package / Case: DO-204AL (DO-41)
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• RoHS Status: ROHS3 Compliant

The identified substitute parts maintain identical reverse standoff voltage, package configuration, mounting type, temperature range, and compliance certifications. Clamping voltage and peak pulse current parameters remain within the operational envelope of the original component, ensuring functional equivalence in circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

Both P4KE7.5CA-B and P4KE7.5CA are active product alternatives to the obsolete P4KE7.5C-B. Selection between these substitutes is based on product status and packaging requirements:

P4KE7.5CA-B is manufactured by Littelfuse, the original equipment manufacturer, and maintains active product status with bulk packaging. This option provides continuity with the original manufacturer while ensuring ongoing availability and support.

P4KE7.5CA is manufactured by Taiwan Semiconductor Corporation and is available in tape and reel packaging, suitable for automated assembly processes. This option offers alternative sourcing with active product status and higher peak pulse current specification (37A versus 36.3A).

Both alternatives satisfy ROHS3 compliance and maintain the complete electrical and thermal operating envelope of the original component. Selection should be based on procurement requirements, packaging preferences, and supply chain considerations.

Frequently Asked Questions (FAQ)

Q: Can P4KE7.5CA-B or P4KE7.5CA be used as direct replacements for P4KE7.5C-B?

A: Yes. Both parts maintain identical reverse standoff voltage (6.4V), package configuration (DO-204AL), mounting type (through hole), and operating temperature range (-55°C ~ 175°C). Clamping voltage and peak pulse current specifications remain within acceptable operational parameters for the original application.

Q: What is the difference between P4KE7.5CA-B and P4KE7.5CA?

A: The primary differences are manufacturer and packaging. P4KE7.5CA-B is supplied by Littelfuse in bulk packaging, while P4KE7.5CA is supplied by Taiwan Semiconductor Corporation in tape and reel packaging. Electrical specifications are equivalent.

Q: Are there packaging considerations when substituting these parts?

A: Yes. P4KE7.5CA-B is available in bulk packaging suitable for manual assembly or small-volume production. P4KE7.5CA is available in tape and reel packaging optimized for automated pick-and-place assembly. Both maintain the same through-hole DO-204AL (DO-41) package footprint.

Q: Do the substitute parts meet the same compliance standards?

A: Yes. Both P4KE7.5CA-B and P4KE7.5CA are ROHS3 compliant, matching the compliance status of the original P4KE7.5C-B component.

Q: What is the significance of the clamping voltage difference between P4KE7.5C-B (11.87V) and the substitutes (11.3V)?

A: The clamping voltage specification represents the maximum voltage at peak pulse current. The substitute parts exhibit lower clamping voltage, which provides improved transient suppression performance while maintaining the same reverse standoff voltage and power dissipation rating.