P4KE8.2A-B Equivalent & Substitute Parts

Part Overview

The P4KE8.2A-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This through-hole component operates with a reverse standoff voltage of 7.02V and provides clamping at 12.1V maximum, making it suitable for protecting sensitive electronic circuits from transient voltage events. The part maintains Active product status and is RoHS3 compliant, ensuring continued availability and environmental compliance for new designs and production environments.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the critical parameters that define TVS diode functionality and circuit protection capability.

Substiute Parts

P4KE8.2A-B

Littelfuse Inc.In Stock: 1092P4KE8.2A-B Datasheet

Current PartRFQ

P4KE8.2A

Taiwan Semiconductor CorporationIn Stock: 641P4KE8.2A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE8.2A-B is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 7.02V
• Voltage - Clamping (Max) @ Ipp: 12.1V
• Voltage - Breakdown (Min): 7.79V
• Current - Peak Pulse (10/1000µs): 33.9A minimum
• Power - Peak Pulse: 400W
• Package / Case: DO-204AL (DO-41) through-hole configuration
• Type: Zener diode, unidirectional (1 channel)
• Operating Temperature Range: -55°C to 175°C (TJ)

Substitute parts must maintain identical voltage specifications and equivalent or superior current handling capability within the same physical package to ensure direct circuit board compatibility and equivalent protection performance.

Parameter Comparison

Engineering Selection Recommendations

Both the P4KE8.2A-B (Littelfuse Inc.) and P4KE8.2A (Taiwan Semiconductor Corporation) maintain Active product status, ensuring long-term availability and supply chain stability. Both components are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for industrial and commercial applications.

The Taiwan Semiconductor Corporation variant demonstrates equivalent electrical performance with a peak pulse current specification of 34A, which exceeds the 33.9A requirement of the original Littelfuse component. Both parts share identical voltage parameters, thermal operating range, and physical packaging, confirming direct functional interchangeability.

Selection between these components may be based on supply availability, lead time requirements, packaging format preference (Bulk versus Tape & Reel), or established supplier relationships, as electrical and mechanical specifications are equivalent.

Frequently Asked Questions (FAQ)

Q: Can the P4KE8.2A from Taiwan Semiconductor Corporation directly replace the P4KE8.2A-B from Littelfuse Inc.?

A: Yes. Both components share identical voltage specifications (7.02V reverse standoff, 12.1V clamping), equivalent power ratings (400W peak pulse), and the same DO-204AL (DO-41) through-hole package. The Taiwan Semiconductor variant provides 34A peak pulse current, which meets or exceeds the 33.9A requirement. Operating temperature ranges and compliance certifications are identical.

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution is determined by equivalence in reverse standoff voltage (7.02V), clamping voltage (12.1V), peak pulse current (minimum 33.9A), power rating (400W), physical package (DO-204AL through-hole), and operating temperature range (-55°C to 175°C). Deviation in any of these parameters disqualifies a component as a direct substitute.

Q: Does packaging format affect substitution compatibility?

A: Packaging format (Bulk versus Tape & Reel) does not affect electrical or mechanical compatibility. The difference is logistical: Bulk packaging is suitable for lower-volume applications or manual assembly, while Tape & Reel packaging is optimized for automated pick-and-place assembly processes. The physical component and its performance remain identical.

Q: Are there any compliance or certification differences between these parts?

A: No. Both components are RoHS3 compliant, REACH unaffected, and maintain MSL 1 (Unlimited) moisture sensitivity ratings. Regulatory and environmental compliance is equivalent.

Q: What should be verified before implementing a substitute part in production?

A: Confirm that the substitute part's electrical specifications match the original design requirements, verify physical package compatibility with the circuit board layout, and ensure supply chain continuity for the selected manufacturer. Both components listed meet these criteria.