P4KE75CA-B Equivalent & Substitute Parts

Part Overview

The P4KE75CA-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This bidirectional Zener diode operates with a reverse standoff voltage of 64.1V and provides clamping at 103V maximum, making it suitable for protecting sensitive electronic circuits from transient voltage spikes. The component is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Alternative equivalent parts may be required due to inventory availability, packaging preferences, or supply chain considerations.

Substiute Parts

P4KE75CA-B

Littelfuse Inc.In Stock: 1053P4KE75CA-B Datasheet

Current PartRFQ

P4KE75CA

Taiwan Semiconductor CorporationIn Stock: 755P4KE75CA Datasheet

MFR RecommendedRFQ

SA64CA

Taiwan Semiconductor CorporationIn Stock: 5417SA64CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE75CA-B is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Reverse standoff voltage within 64V to 64.1V range
• Breakdown voltage minimum of 71.1V or higher
• Clamping voltage at 103V maximum
• Peak pulse current rating of 4A or greater
• Peak pulse power rating of 400W or greater
• Operating temperature range of -55°C to 175°C or wider

Mechanical Compatibility Criteria:

• Through-hole axial mounting configuration
• DO-204AL or DO-204AC package types (both axial variants)
• Active product status
• ROHS3 compliance

Substitute parts must satisfy all electrical parameters while maintaining mechanical compatibility. Package variants within the axial through-hole family are acceptable provided electrical specifications are met or exceeded.

Parameter Comparison

Engineering Selection Recommendations

P4KE75CA (Taiwan Semiconductor Corporation) is the primary equivalent substitute. This part maintains identical electrical specifications to the P4KE75CA-B across all critical parameters: 64.1V reverse standoff voltage, 71.3V minimum breakdown voltage, 103V clamping voltage, and 4A peak pulse current. The package type remains DO-204AL (DO-41), ensuring direct mechanical compatibility. Both parts are ROHS3 compliant and active in production. The primary difference is packaging format (Tape & Reel versus Bulk) and manufacturer origin.

SA64CA (Taiwan Semiconductor Corporation) is an acceptable substitute with enhanced electrical performance. This part exceeds the minimum requirements with 5A peak pulse current (versus 4A) and 500W peak pulse power (versus 400W), providing additional safety margin in transient protection applications. The reverse standoff voltage is 64V (0.1V lower than the original specification) and breakdown voltage is 71.1V (0.2V lower), both within acceptable tolerance for general-purpose applications. The package type is DO-204AC (DO-15), which differs from the original DO-204AL but maintains through-hole axial mounting compatibility. ROHS3 compliance and active production status are confirmed.

Frequently Asked Questions (FAQ)

Q: Can P4KE75CA be used as a direct replacement for P4KE75CA-B?

A: Yes. The P4KE75CA maintains identical electrical specifications including 64.1V reverse standoff voltage, 71.3V breakdown voltage, 103V clamping voltage, and 4A peak pulse current. Both use DO-204AL (DO-41) packages. The primary difference is packaging format (Tape & Reel versus Bulk) and manufacturer.

Q: Is SA64CA compatible with P4KE75CA-B applications?

A: Yes, with consideration for package differences. The SA64CA provides equivalent or superior electrical performance with 5A peak pulse current and 500W power rating. The reverse standoff voltage is 64V (0.1V lower) and breakdown voltage is 71.1V (0.2V lower), both acceptable for general-purpose TVS applications. The package type is DO-204AC (DO-15) instead of DO-204AL (DO-41), but both are through-hole axial configurations.

Q: What are the key differences between DO-204AL and DO-204AC packages?

A: Both are through-hole axial packages for TVS diodes. DO-204AL (DO-41) is the smaller variant, while DO-204AC (DO-15) is the larger variant. Physical dimensions differ, but both mount identically in through-hole PCB designs. Component selection depends on PCB layout constraints and available board space.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both P4KE75CA and SA64CA are ROHS3 compliant, matching the compliance status of the P4KE75CA-B.

Q: What is the impact of the 1A current difference between P4KE75CA-B and SA64CA?

A: The SA64CA's 5A peak pulse current rating (versus 4A in the original) provides enhanced transient protection capability. This represents a performance improvement rather than a limitation, allowing the SA64CA to handle higher transient current events while maintaining the same 103V clamping voltage.