P4KE82C Equivalent & Substitute Parts

Part Overview

The P4KE82C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in through-hole applications. This part operates with a reverse standoff voltage of 70.1V and peak pulse power rating of 400W. The P4KE82C is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

P4KE82C

Littelfuse Inc.In Stock: 704P4KE82C Datasheet

Current PartRFQ

P4KE82CA

Taiwan Semiconductor CorporationIn Stock: 1110P4KE82CA Datasheet

DirectRFQ

SA70CA

Taiwan Semiconductor CorporationIn Stock: 1150SA70CA Datasheet

MFR RecommendedRFQ

BZW04-70B-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 1054BZW04-70B-E3/54 Datasheet

DirectRFQ

P4KE82CA-AP

Micro Commercial CoIn Stock: 803P4KE82CA-AP Datasheet

MFR RecommendedRFQ

P4KE82CA-BP

Micro Commercial CoIn Stock: 1144P4KE82CA-BP Datasheet

MFR RecommendedRFQ

P4KE82CA-G

Comchip TechnologyIn Stock: 819P4KE82CA-G Datasheet

MFR RecommendedRFQ

P4KE82CA-TP

Micro Commercial CoIn Stock: 746P4KE82CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P4KE82C are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Reverse Standoff Voltage (Typ): 70.1V ± tolerance
• Bidirectional operation: 1 channel
• Mounting Type: Through Hole
• Package compatibility: DO-204AL (DO-41) or DO-204AC (DO-15)
• Operating Temperature Range: -55°C minimum to 175°C maximum
• RoHS3 Compliance

Allowable Variations:

• Voltage - Clamping (Max) @ Ipp: 113V to 118.65V
• Current - Peak Pulse (10/1000µs): 4.6A to 4.6A
• Power - Peak Pulse: 400W to 500W

Substitute parts are grouped into two categories: direct equivalents maintaining identical electrical characteristics and active-status alternatives with compatible performance parameters within the allowed ranges.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute (Active Status): P4KE82CA (Taiwan Semiconductor Corporation) is the recommended direct substitute. It maintains identical reverse standoff voltage (70.1V), matching bidirectional channel configuration, compatible package (DO-204AL/DO-41), and active product status. Operating temperature range (-55°C ~ 175°C) and RoHS3 compliance align with the original specification.

Alternative Substitute (Enhanced Performance): SA70CA (Taiwan Semiconductor Corporation) offers increased peak pulse current (4.6A) and power rating (500W) while maintaining the same reverse standoff voltage and operating temperature range. This part uses DO-204AC (DO-15) package, which requires PCB layout verification for pin compatibility. Active product status and RoHS3 compliance are confirmed.

Secondary Substitutes (Active Status, Bulk Packaging): P4KE82CA-AP, P4KE82CA-BP, and P4KE82CA-TP (Micro Commercial Co) provide electrical equivalence with 3.6A peak pulse current and 400W power rating. These parts are supplied in bulk packaging rather than tape & reel. RoHS status and MSL data are not specified for these variants.

Alternative Substitute (Vishay): BZW04-70B-E3/54 (Vishay General Semiconductor - Diodes Division) maintains DO-204AL/DO-41 package compatibility with slightly lower peak pulse current (4.6A). Active product status and RoHS3 compliance are confirmed.

Temperature-Limited Substitute: P4KE82CA-G (Comchip Technology) operates within -55°C ~ 150°C range, which is 25°C lower than the original specification. This part is suitable only for applications not requiring the full 175°C upper temperature limit. RoHS3 compliance and MSL 1 are confirmed.

Frequently Asked Questions (FAQ)

Q: Can P4KE82CA directly replace P4KE82C in existing designs? A: Yes. P4KE82CA maintains identical reverse standoff voltage (70.1V), bidirectional operation, DO-204AL/DO-41 package compatibility, and operating temperature range (-55°C ~ 175°C). The primary difference is product status: P4KE82CA is active while P4KE82C is obsolete.

Q: What is the difference between DO-204AL and DO-204AC packages? A: DO-204AL (DO-41) and DO-204AC (DO-15) are both axial through-hole packages but have different physical dimensions. SA70CA uses DO-204AC, requiring verification that PCB footprints and lead spacing accommodate this package variant before substitution.

Q: Are all substitute parts RoHS3 compliant? A: P4KE82CA, SA70CA, BZW04-70B-E3/54, and P4KE82CA-G are confirmed RoHS3 compliant. P4KE82CA-AP, P4KE82CA-BP, and P4KE82CA-TP do not specify RoHS status in available data.

Q: Which substitute offers the highest power dissipation capability? A: SA70CA provides 500W peak pulse power, compared to 400W for the original P4KE82C and most other substitutes. This higher rating provides additional margin for transient protection.

Q: Can P4KE82CA-G be used in applications requiring 175°C operation? A: No. P4KE82CA-G is rated only to 150°C junction temperature, making it unsuitable for designs requiring the full -55°C ~ 175°C operating range of the original P4KE82C.

Q: What packaging formats are available for substitutes? A: P4KE82CA and BZW04-70B-E3/54 are supplied in tape & reel (TR) format. P4KE82CA-AP, P4KE82CA-BP, P4KE82CA-G, and P4KE82CA-TP are supplied in bulk packaging. SA70CA is supplied in tape & reel format.

Q: Are there electrical performance differences between substitute parts? A: Peak pulse current varies between 4.6A and 4.6A across substitutes, while clamping voltage remains within 113V across all active alternatives. These variations fall within acceptable ranges for general-purpose transient protection applications.