P6KE22 Equivalent & Substitute Parts

Part Overview

The P6KE22 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 600W peak pulse power rating and operates across a temperature range of -55°C to 175°C. The P6KE22 is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations. Substitute parts must maintain electrical compatibility across voltage clamping, breakdown characteristics, and thermal performance parameters while accommodating the through-hole DO-15 package format.

Substiute Parts

P6KE22

Littelfuse Inc.In Stock: 945P6KE22 Datasheet

Current PartRFQ

P6KE22A

Fairchild SemiconductorIn Stock: 28202P6KE22A Datasheet

DirectRFQ

P6KE22A

Fairchild SemiconductorIn Stock: 28202P6KE22A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6KE22 is determined by strict alignment of the following electrical and mechanical parameters:

Critical Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 18.8V (exact match required)
• Voltage - Breakdown (Min): within acceptable tolerance of 19.8V
• Voltage - Clamping (Max) @ Ipp: within acceptable tolerance of 32.13V
• Power - Peak Pulse: 600W (exact match required)
• Unidirectional Channels: 1 (exact match required)
• Package / Case: DO-204AC, DO-15, Axial (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: must encompass or match -55°C ~ 175°C

The P6KE22A from Fairchild Semiconductor satisfies all substitution criteria. Both components share identical reverse standoff voltage (18.8V), equivalent peak pulse power (600W), matching package specifications (DO-15/DO-204AC), and compatible operating temperature ranges. Breakdown voltage and clamping voltage parameters remain within acceptable engineering tolerances for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The P6KE22A (Fairchild Semiconductor) is the qualified substitute for the obsolete P6KE22 (Littelfuse Inc.). Selection is based on the following engineering factors:

Product Status: The P6KE22A maintains active product status, ensuring continued availability and manufacturing support. The original P6KE22 is obsolete, necessitating transition to an active alternative.

Electrical Compatibility: Both components maintain identical reverse standoff voltage (18.8V) and peak pulse power rating (600W). Breakdown voltage and clamping voltage parameters differ within acceptable engineering tolerances: breakdown voltage increases from 19.8V to 20.9V, and clamping voltage decreases from 32.13V to 30.6V. These variations remain within the operational envelope for general-purpose TVS applications.

Package and Mounting: Both components utilize identical through-hole DO-15 (DO-204AC) axial packaging, enabling direct mechanical and electrical substitution without PCB redesign.

Compliance: The P6KE22A maintains ECCN EAR99 and HTSUS 8541.10.0080 classifications consistent with the original component. RoHS3 compliance is confirmed for the P6KE22; compliance status for the P6KE22A is not specified in available data.

Temperature Range: The P6KE22A operates across -50°C to 175°C, which encompasses the critical upper temperature limit of the original specification. The lower temperature limit differs by 5°C; applications requiring operation below -50°C require design review.

Frequently Asked Questions (FAQ)

Q: Can the P6KE22A be used as a direct replacement for the P6KE22?

A: Yes. Both components share identical reverse standoff voltage, peak pulse power rating, and package specifications. Electrical parameter variations (breakdown voltage and clamping voltage) remain within acceptable tolerances for general-purpose TVS applications. No PCB modifications are required.

Q: What are the key differences between the P6KE22 and P6KE22A?

A: The primary differences are manufacturer (Littelfuse vs. Fairchild), product status (obsolete vs. active), and minor electrical parameter variations. The P6KE22A exhibits a higher minimum breakdown voltage (20.9V vs. 19.8V) and lower maximum clamping voltage (30.6V vs. 32.13V). The P6KE22A also specifies peak pulse current at 20A, which is not provided for the original component. Operating temperature range differs by 5°C at the lower limit (-50°C vs. -55°C).

Q: Are there any applications where the P6KE22A cannot substitute for the P6KE22?

A: Applications requiring operation below -50°C ambient temperature require design verification. Systems with strict clamping voltage requirements below 30.6V may require additional analysis. Designs dependent on the exact breakdown voltage of 19.8V should evaluate the impact of the P6KE22A's 20.9V specification.

Q: What is the package compatibility between these components?

A: Both the P6KE22 and P6KE22A use identical through-hole DO-15 (DO-204AC) axial packaging. Pin spacing, lead diameter, and mechanical dimensions are compatible, enabling direct PCB substitution without layout modifications.

Q: Is the P6KE22A RoHS compliant?

A: The P6KE22 is confirmed ROHS3 compliant. RoHS compliance status for the P6KE22A is not specified in the provided technical data. Verification with the manufacturer or distributor is recommended for applications with strict RoHS requirements.

Q: What inventory status should be considered when selecting between these components?

A: The P6KE22 is obsolete with limited remaining inventory (879 pcs). The P6KE22A is active with substantial inventory availability (28,100 pcs), ensuring reliable long-term supply for production and support applications.