P4KE82CA-B Equivalent & Substitute Parts

Part Overview

The P4KE82CA-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose overvoltage protection applications. This through-hole component operates with a reverse standoff voltage of 70.1V and provides clamping at 113V with a peak pulse current rating of 3.6A. The part is currently active in production and widely stocked, with 952 units available in bulk packaging. Finding equivalent and substitute parts may be necessary for supply chain optimization, packaging format requirements, or performance parameter adjustments within acceptable tolerances.

Substiute Parts

P4KE82CA-B

LittelfuseIn Stock: 1019P4KE82CA-B Datasheet

Current PartRFQ

P4KE82CA

Taiwan Semiconductor CorporationIn Stock: 1110P4KE82CA Datasheet

MFR RecommendedRFQ

SA70CA

Taiwan Semiconductor CorporationIn Stock: 1150SA70CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE82CA-B is determined by the following critical parameters:

Voltage Parameters: Reverse standoff voltage, breakdown voltage minimum, and clamping voltage maximum must remain within the specified ranges to ensure proper circuit protection without nuisance triggering or inadequate suppression.

Current Rating: Peak pulse current capacity must meet or exceed the application requirement of 3.6A at the specified pulse duration (10/1000µs).

Package Compatibility: The physical package format (DO-204AL/DO-41 axial through-hole) determines mechanical fit and PCB layout compatibility.

Thermal Performance: Operating temperature range must support the application environment.

Compliance: RoHS3 compliance and REACH unaffected status ensure regulatory alignment.

The substitute parts identified below maintain electrical equivalence within these parameters while offering variations in packaging format, current capacity, or manufacturer sourcing.

Parameter Comparison

Engineering Selection Recommendations

P4KE82CA (Taiwan Semiconductor Corporation): This part provides direct electrical equivalence to the P4KE82CA-B with identical voltage parameters and marginally higher peak pulse current (3.7A vs. 3.6A). The primary distinction is packaging format (Tape & Reel vs. Bulk) and manufacturer sourcing. Both parts maintain ROHS3 compliance and identical thermal operating ranges. Selection of this substitute is appropriate when tape and reel packaging is required for automated assembly processes or when Taiwan Semiconductor Corporation sourcing is preferred for supply chain diversification.

SA70CA (Taiwan Semiconductor Corporation): This part maintains voltage equivalence (70V reverse standoff, 113V clamping) with enhanced current capacity (4.6A peak pulse) and increased power dissipation (500W vs. 400W). The package format differs (DO-204AC/DO-15 vs. DO-204AL/DO-41), which requires verification of mechanical fit within the target application. This substitute is suitable for applications requiring higher transient current handling or when DO-204AC package compatibility exists. ROHS3 compliance and thermal range remain equivalent.

All three parts maintain active product status and full regulatory compliance (ROHS3, REACH unaffected, EAR99 classification).

Frequently Asked Questions (FAQ)

Q: Can P4KE82CA replace P4KE82CA-B directly? A: Yes. The P4KE82CA provides identical electrical performance with equivalent voltage ratings and slightly higher current capacity (3.7A vs. 3.6A). Both use the same DO-204AL (DO-41) package. The primary difference is packaging format (Tape & Reel vs. Bulk) and manufacturer.

Q: Is SA70CA compatible with P4KE82CA-B? A: SA70CA maintains voltage equivalence and offers higher current capacity (4.6A) and power rating (500W). However, it uses a different package format (DO-204AC/DO-15 instead of DO-204AL/DO-41). Physical fit on the PCB must be verified before substitution.

Q: What are the critical parameters for TVS diode substitution? A: Reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current rating, and package format are the primary criteria. All three parts in this comparison maintain the same voltage protection levels and thermal operating range.

Q: Are all substitute parts RoHS compliant? A: Yes. P4KE82CA-B, P4KE82CA, and SA70CA are all ROHS3 compliant and REACH unaffected.

Q: Which substitute offers the best performance upgrade? A: SA70CA provides the highest current capacity (4.6A) and power dissipation (500W), making it suitable for applications with higher transient stress. Package compatibility must be confirmed for your specific application.

Q: Can I use these parts interchangeably in production? A: P4KE82CA and P4KE82CA-B are directly interchangeable due to identical package and electrical specifications. SA70CA requires mechanical fit verification due to different package format, though electrical performance is equivalent or superior.