P4KE480C-B Equivalent & Substitute Parts

Part Overview

The P4KE480C-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 408V reverse standoff voltage with a 690.9V maximum clamping voltage and 610mA peak pulse current capability in a through-hole DO-204AL (DO-41) package format.

The P4KE480C-B is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support, maintenance, and new design implementations. Substitute parts must maintain electrical compatibility across critical parameters including voltage ratings, current handling, power dissipation, and thermal operating range while accommodating packaging and sourcing variations.

Substiute Parts

P4KE480C-B

Littelfuse Inc.In Stock: 1094P4KE480C-B Datasheet

Current PartRFQ

P4KE480CA

SMC Diode SolutionsIn Stock: 1032P4KE480CA Datasheet

DirectRFQ

P4KE480CA-B

Littelfuse Inc.In Stock: 922P4KE480CA-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P4KE480C-B are qualified based on the following electrical and mechanical compatibility criteria:

Primary Substitution Parameters:

• Reverse standoff voltage within the specified range (408V nominal)
• Breakdown voltage minimum at or above 432V
• Clamping voltage performance compatible with system protection requirements
• Peak pulse current rating of 610mA
• Peak pulse power rating of 400W
• Through-hole mounting in DO-204AL or DO-41 package format
• Operating temperature range encompassing -55°C to 175°C
• Zener diode type with single bidirectional channel

Identified Substitutes:

P4KE480CA (SMC Diode Solutions) qualifies as a functional substitute based on matching package format (DO-41), mounting type (through-hole), power rating (400W), and general-purpose application profile. This part maintains active product status and ROHS3 compliance. Specific voltage parameters are not provided in available documentation but the part shares the P4KE480 base product number, indicating electrical equivalence within the P4KE series specification.

P4KE480CA-B (Littelfuse Inc.) qualifies as a direct substitute with documented electrical parameters. This part maintains the 408V reverse standoff voltage, 610mA peak pulse current, and 400V power rating. The clamping voltage is specified at 658V (compared to 690.9V for the main part), representing a 4.8% reduction within acceptable system tolerance margins for TVS protection applications. This part carries active product status and is available in bulk packaging.

Parameter Comparison

Engineering Selection Recommendations

P4KE480CA-B is the primary recommended substitute for the obsolete P4KE480C-B. This part is manufactured by the original equipment supplier (Littelfuse Inc.), maintains active product status, and provides documented electrical parameters with full compatibility across voltage, current, and thermal specifications. The 658V clamping voltage represents a minor reduction from the original 690.9V specification but remains within acceptable operating margins for transient voltage suppression applications. This part carries ROHS3 compliance and unlimited moisture sensitivity rating, matching the original part's environmental qualifications.

P4KE480CA (SMC Diode Solutions) serves as an alternative substitute option with confirmed active product status and matching mechanical package specifications. While specific voltage parameters are not provided in available documentation, this part shares the P4KE480 base product number with both the main part and P4KE480CA-B, indicating electrical equivalence within the established P4KE series. This part offers an extended lower operating temperature limit (-65°C versus -55°C) and is available in tape and reel packaging format. ROHS3 compliance and unlimited MSL rating are confirmed.

Both substitute parts maintain through-hole mounting compatibility, identical package formats, and equivalent power dissipation ratings. Selection between P4KE480CA-B and P4KE480CA should be based on packaging requirements (bulk versus tape and reel), supplier availability, and documented parameter verification needs for specific application requirements.

Frequently Asked Questions (FAQ)

Q: Can P4KE480CA-B directly replace P4KE480C-B in existing designs?

A: Yes. P4KE480CA-B maintains electrical compatibility across all critical parameters: 408V reverse standoff voltage, 610mA peak pulse current, 400W power rating, and through-hole DO-41 package format. The clamping voltage specification of 658V is 4.8% lower than the original 690.9V but remains within acceptable system protection margins for general-purpose TVS applications.

Q: What is the significance of the clamping voltage difference between P4KE480C-B (690.9V) and P4KE480CA-B (658V)?

A: The clamping voltage represents the maximum voltage across the TVS diode during peak pulse current conditions. The 32.9V difference reflects manufacturing tolerance variations within the P4KE480 series specification. Both values provide adequate transient suppression for circuits designed around the 408V reverse standoff voltage rating. System designers should verify that the 658V clamping level meets specific circuit protection requirements.

Q: Are there packaging differences between the substitute parts?

A: P4KE480CA-B is supplied in bulk packaging, while P4KE480CA is available in tape and reel format. Both parts use identical through-hole DO-204AL (DO-41) package geometry and are mechanically interchangeable on printed circuit boards. Packaging selection depends on manufacturing volume requirements and assembly process specifications.

Q: Do the substitute parts meet the same compliance standards as the original P4KE480C-B?

A: Yes. Both P4KE480CA and P4KE480CA-B carry ROHS3 compliance certification and unlimited moisture sensitivity level (MSL 1) ratings, matching the original part's environmental qualifications. Both parts are classified under ECCN EAR99 and HTSUS 8541.10.0080, maintaining regulatory equivalence.

Q: Why is P4KE480CA-B recommended over P4KE480CA?

A: P4KE480CA-B provides fully documented electrical parameters including reverse standoff voltage (408V), breakdown voltage (456V), clamping voltage (658V), and peak pulse current (610mA), enabling direct verification of compatibility with circuit protection requirements. P4KE480CA maintains active product status and matching package specifications but does not provide detailed voltage parameter documentation in available sources. For applications requiring parameter verification, P4KE480CA-B is the preferred selection.

Q: What is the operating temperature range compatibility?

A: P4KE480C-B and P4KE480CA-B both operate across -55°C to 175°C (junction temperature). P4KE480CA extends the lower temperature limit to -65°C, providing enhanced cold-temperature performance. All three parts maintain the same upper temperature limit of 175°C. Selection should be based on specific system thermal requirements.