P6KE56A-B Equivalent & Substitute Parts

Part Overview

The P6KE56A-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose transient voltage protection applications. This through-hole component operates across a temperature range of -55°C to 175°C and is ROHS3 compliant with unlimited moisture sensitivity rating. The part is currently in active production status with 928 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when alternative packaging or manufacturer options are required.

Substiute Parts

P6KE56A-B

Diodes IncorporatedIn Stock: 963P6KE56A-B Datasheet

Current PartRFQ

P6KE56A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 2773P6KE56A-E3/54 Datasheet

DirectRFQ

P6KE56AHE3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 881P6KE56AHE3/54 Datasheet

DirectRFQ

P6KE56A

Fairchild SemiconductorIn Stock: 2374P6KE56A Datasheet

MFR RecommendedRFQ

TP6KE56A

Littelfuse Inc.In Stock: 5522TP6KE56A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P6KE56A-B are qualified based on strict electrical and mechanical parameter matching:

Primary Substitution Criteria:

• Voltage - Reverse Standoff (Typ): 47.8V
• Voltage - Breakdown (Min): 53.2V
• Voltage - Clamping (Max) @ Ipp: 77V
• Current - Peak Pulse (10/1000µs): 7.8A (±0.1A tolerance acceptable)
• Power - Peak Pulse: 600W
• Type: Zener, Unidirectional
• Mounting Type: Through Hole
• Package / Case: DO-204AC, DO-15, Axial
• Operating Temperature: -55°C ~ 175°C (TJ)
• RoHS Status: ROHS3 Compliant

Substitute Categories:

1. Direct Electrical Equivalents (Identical Electrical Performance): P6KE56A-E3/54, P6KE56AHE3/54, P6KE56A, TP6KE56A
2. Manufacturer Variants: Parts from Vishay General Semiconductor, Fairchild Semiconductor, and Littelfuse Inc. meeting identical electrical specifications

All substitute parts maintain the same voltage protection characteristics, peak pulse current rating, and thermal operating range as the primary part.

Parameter Comparison

Engineering Selection Recommendations

P6KE56A-E3/54 (Vishay General Semiconductor - Diodes Division) Direct electrical equivalent with identical voltage and current specifications. ROHS3 compliant. Available in Cut Tape packaging with 2724 units in stock. Suitable for standard general-purpose applications requiring 47.8V standoff protection.

P6KE56AHE3/54 (Vishay General Semiconductor - Diodes Division) Direct electrical equivalent with AEC-Q101 automotive qualification. ROHS3 compliant. Recommended for automotive-grade applications requiring transient voltage suppression. 795 units in stock.

P6KE56A (Fairchild Semiconductor) Manufacturer-recommended equivalent. ROHS3 compliant. Available in bulk packaging with 2300 units in stock. Suitable when packaging format flexibility is acceptable.

TP6KE56A (Littelfuse Inc.) Direct electrical equivalent with peak pulse current of 7.9A (0.1A above primary specification). AEC-Q101 automotive qualified. ROHS3 compliant. Highest inventory availability at 5480 units. Recommended for automotive applications or when maximum inventory availability is prioritized.

All substitute parts maintain full electrical and thermal compatibility with the P6KE56A-B within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can P6KE56A-E3/54 be used as a direct replacement for P6KE56A-B? A: Yes. Both parts share identical electrical specifications: 47.8V reverse standoff voltage, 77V clamping voltage, 7.8A peak pulse current, and 600W peak pulse power. Both are ROHS3 compliant with DO-204AC/DO-15 axial through-hole packaging. The primary difference is the manufacturer (Vishay vs. Diodes Incorporated) and packaging format (Cut Tape vs. standard).

Q: What is the difference between P6KE56AHE3/54 and P6KE56A-E3/54? A: Both are manufactured by Vishay with identical electrical specifications. P6KE56AHE3/54 carries AEC-Q101 automotive qualification and automotive-grade designation, making it suitable for automotive applications. P6KE56A-E3/54 is specified for general-purpose applications. Electrical performance is identical.

Q: Is TP6KE56A compatible with P6KE56A-B? A: Yes. TP6KE56A (Littelfuse) is electrically compatible with a peak pulse current of 7.9A, which is 0.1A higher than the P6KE56A-B specification of 7.8A. All other electrical parameters match: 47.8V standoff, 77V clamping, 600W peak power. TP6KE56A carries AEC-Q101 automotive qualification.

Q: Can I use the Fairchild P6KE56A as a substitute? A: Yes. The Fairchild P6KE56A is a manufacturer-recommended equivalent. However, detailed electrical specifications beyond ECCN and HTSUS classification are not provided in the component data. Verification against the primary part's electrical characteristics is recommended before design implementation.

Q: What packaging options are available for these substitutes? A: All substitute parts use DO-204AC/DO-15 axial through-hole packaging, maintaining mechanical compatibility with the P6KE56A-B. Packaging formats vary by supplier: Vishay parts are available in Cut Tape, Fairchild in Bulk, and Littelfuse in Cut Tape. All are suitable for through-hole PCB assembly.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All identified substitute parts (P6KE56A-E3/54, P6KE56AHE3/54, P6KE56A, and TP6KE56A) are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the primary part's environmental compliance.

Q: Which substitute should I select for automotive applications? A: P6KE56AHE3/54 or TP6KE56A are recommended for automotive applications. Both carry AEC-Q101 qualification and automotive-grade designation. TP6KE56A offers higher inventory availability (5480 units) compared to P6KE56AHE3/54 (795 units).