P4KE480-B Equivalent & Substitute Parts

Part Overview

The P4KE480-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This unidirectional zener diode operates in the 408V reverse standoff voltage range with a maximum clamping voltage of 690.9V at peak pulse current. The component is packaged in a through-hole DO-204AL (DO-41) axial configuration and is rated for 400W peak pulse power dissipation across an operating temperature range of -55°C to 175°C.

The P4KE480-B is currently classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

P4KE480-B

Littelfuse Inc.In Stock: 862P4KE480-B Datasheet

Current PartRFQ

P4KE480A

SMC Diode SolutionsIn Stock: 969P4KE480A Datasheet

DirectRFQ

P4KE480A-B

Littelfuse Inc.In Stock: 802P4KE480A-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE480-B is determined by the following critical parameters:

• Unidirectional channel configuration (1 channel required)
• Voltage - Reverse Standoff (Typ): 408V nominal
• Voltage - Clamping (Max) @ Ipp: within acceptable operating range
• Current - Peak Pulse (10/1000µs): 610mA minimum
• Power - Peak Pulse: 400W minimum
• Mounting Type: Through Hole
• Package / Case: DO-204AL or DO-41 axial configuration
• Operating Temperature Range: -55°C to 175°C or broader
• RoHS3 Compliance: required

The substitute parts identified below meet these core electrical and mechanical compatibility criteria, enabling direct functional replacement in applications designed for the P4KE480-B.

Parameter Comparison

Engineering Selection Recommendations

P4KE480A-B (Littelfuse Inc.) is the primary recommended substitute for the obsolete P4KE480-B. Both components are manufactured by Littelfuse Inc., share identical reverse standoff voltage specifications (408V), and maintain the same peak pulse current rating (610mA) and power dissipation capability (400W). The P4KE480A-B is currently in active production status, ensuring long-term supply chain availability. Clamping voltage is specified at 658V, which is lower than the original 690.9V specification but remains within acceptable operating parameters for general-purpose transient suppression. The component carries ROHS3 compliance and is available in bulk packaging.

P4KE480A (SMC Diode Solutions) is an alternative substitute with active product status and extended operating temperature range (-65°C to 175°C). However, critical electrical parameters including reverse standoff voltage, breakdown voltage, clamping voltage, and peak pulse current are not specified in the available documentation. This component is available in tape and reel packaging. Selection of this part requires confirmation of electrical parameter equivalence with the original specification.

For applications requiring the highest parameter certainty and manufacturer continuity, P4KE480A-B is the preferred selection. For applications with extended low-temperature requirements, P4KE480A may be considered subject to electrical parameter verification.

Frequently Asked Questions (FAQ)

Q: Can P4KE480A be used as a direct replacement for P4KE480-B?

A: P4KE480A shares the same base product number (P4KE480) and package configuration (DO-41 axial through-hole). However, critical electrical parameters including reverse standoff voltage, breakdown voltage, clamping voltage, and peak pulse current are not specified in the available data. Direct substitution requires confirmation that these parameters meet or exceed the original P4KE480-B specifications (408V standoff, 432V breakdown minimum, 690.9V clamping maximum, 610mA peak pulse).

Q: What is the difference between P4KE480A and P4KE480A-B?

A: Both parts share the P4KE480 base product number and are functionally equivalent zener TVS diodes in DO-41 axial packages. P4KE480A-B is manufactured by Littelfuse Inc. with fully specified electrical parameters (408V standoff, 658V clamping, 610mA peak pulse). P4KE480A is manufactured by SMC Diode Solutions with unspecified electrical parameters. P4KE480A-B is available in bulk packaging, while P4KE480A is supplied in tape and reel format.

Q: Is the lower clamping voltage of P4KE480A-B (658V vs. 690.9V) acceptable?

A: The clamping voltage specification defines the maximum voltage at which the TVS diode conducts at peak pulse current. A lower clamping voltage (658V) provides more aggressive transient suppression compared to the original specification (690.9V). For general-purpose applications, this represents improved protection performance. Application-specific circuit analysis is required to confirm acceptability for voltage-sensitive loads.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both P4KE480A and P4KE480A-B are ROHS3 compliant, matching the compliance status of the original P4KE480-B component.

Q: What is the impact of packaging differences (bulk vs. tape and reel)?

A: Packaging format affects supply chain logistics and assembly process compatibility. Bulk packaging (P4KE480A-B) is suitable for manual assembly or small-volume production. Tape and reel packaging (P4KE480A) is optimized for automated pick-and-place assembly equipment. Component electrical and mechanical performance is identical regardless of packaging format.

Q: Can P4KE480A be used in applications requiring the extended low-temperature range?

A: P4KE480A specifies an operating temperature range of -65°C to 175°C, extending 10°C lower than the original P4KE480-B specification (-55°C to 175°C). This extended range may be beneficial for applications in extreme cold environments. However, electrical parameter verification is required before selection, as critical specifications are not provided in the available documentation.