Request Quote
(Ships tomorrow)
P6KE56A-T Equivalent & Substitute Parts
Part Overview
The P6KE56A-T is a transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated, designed for general-purpose overvoltage protection in through-hole applications. This unidirectional Zener diode operates with a reverse standoff voltage of 47.8V and provides clamping at 77V with a peak pulse current rating of 7.8A. The part is currently obsolete, making equivalent substitutes necessary for ongoing design support and component procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Reverse Standoff (Typ) | 47.8V |
| Voltage - Breakdown (Min) | 53.2V |
| Voltage - Clamping (Max) @ Ipp | 77V |
| Current - Peak Pulse (10/1000µs) | 7.8A |
| Power - Peak Pulse | 600W |
| Operating Temperature Range | -55°C ~ 175°C (TJ) |
| Mounting Type | Through Hole |
| Package / Case | DO-204AC, DO-15, Axial |
| Type | Zener |
| Unidirectional Channels | 1 |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the P6KE56A-T is determined by strict electrical and mechanical parameter matching:
Critical Matching Parameters:
- Voltage - Reverse Standoff (Typ): 47.8V
- Voltage - Breakdown (Min): 53.2V
- Voltage - Clamping (Max) @ Ipp: 77V
- Current - Peak Pulse (10/1000µs): 7.8A or 7.9A (within tolerance)
- Power - Peak Pulse: 600W
- Type: Zener
- Unidirectional Channels: 1
- Mounting Type: Through Hole
- Package / Case: DO-204AC, DO-15, or Axial
Acceptable Variations:
- Peak pulse current tolerance: 7.8A to 7.9A
- Operating temperature range: -55°C to 175°C (or -65°C to 150°C for specific variants)
- Packaging format: Bulk, Cut Tape (CT), or equivalent
- Manufacturer: Multiple qualified sources
All substitute parts listed maintain electrical equivalence across voltage ratings, current handling, and thermal performance. Compliance certifications (RoHS3, REACH status) are provided for each variant to support regulatory requirements.
Parameter Comparison
| Part Number | Manufacturer | VWM (Typ) | VBR (Min) | VC (Max) | Ipp (10/1000µs) | Power | Temp Range | Package | Status |
|---|---|---|---|---|---|---|---|---|---|
| P6KE56A-T | Diodes Incorporated | 47.8V | 53.2V | 77V | 7.8A | 600W | -55°C ~ 175°C | DO-15 | Obsolete |
| P6KE56A-B | Littelfuse Inc. | 47.8V | 53.2V | 77V | 7.9A | 600W | -55°C ~ 175°C | DO-204AC | Active |
| P6KE56A | Fairchild Semiconductor | 47.8V | 53.2V | 77V | 7.8A | 600W | -55°C ~ 175°C | DO-15 | Active |
| P6KE56A-AP | Micro Commercial Co | 47.8V | 53.2V | 77V | 7.8A | 600W | -55°C ~ 175°C | DO-15 | Active |
| P6KE56A-BP | Micro Commercial Co | 47.8V | 53.2V | 77V | 7.8A | 600W | -55°C ~ 175°C | DO-15 | Active |
| P6KE56A-E3/54 | Vishay General Semiconductor | 47.8V | 53.2V | 77V | 7.8A | 600W | -55°C ~ 175°C | DO-204AC | Active |
| P6KE56AHE3/54 | Vishay General Semiconductor | 47.8V | 53.2V | 77V | 7.8A | 600W | -55°C ~ 175°C | DO-204AC | Active |
| P6KE56A-TP | Micro Commercial Co | 47.8V | 53.2V | 77V | 7.8A | 600W | -55°C ~ 175°C | DO-15 | Active |
| P6KE56AE3/TR13 | Microsemi Corporation | 47.8V | 53.2V | 77V | 7.8A | 600W | -65°C ~ 150°C | Axial | Active |
| TP6KE56A | Littelfuse Inc. | 47.8V | 53.2V | 77V | 7.9A | 600W | -55°C ~ 175°C | DO-204AC | Active |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility):
P6KE56A-B (Littelfuse Inc.) and TP6KE56A (Littelfuse Inc.) are recommended as primary replacements. Both maintain identical electrical specifications with peak pulse current of 7.9A (within tolerance of 7.8A), operate across the full -55°C to 175°C temperature range, and carry active product status with ROHS3 compliance. These parts are available in DO-204AC packaging with high inventory levels.
Secondary Substitutes (Full Electrical Equivalence):
P6KE56A (Fairchild Semiconductor), P6KE56A-AP, P6KE56A-BP, and P6KE56A-TP (all Micro Commercial Co) provide complete electrical equivalence with 7.8A peak pulse current matching the original specification. All maintain -55°C to 175°C operating range and active product status. These variants differ primarily in packaging format and supplier designation.
Specialized Variants:
P6KE56A-E3/54 and P6KE56AHE3/54 (Vishay General Semiconductor) are qualified to AEC-Q101 automotive standards and suitable for automotive-grade applications. P6KE56AHE3/54 includes automotive-grade designation.
P6KE56AE3/TR13 (Microsemi Corporation) is supplied in axial package format with operating temperature range of -65°C to 150°C, suitable for applications requiring extended low-temperature performance.
Compliance Considerations:
All substitute parts are ROHS3 compliant. REACH status varies by manufacturer: Littelfuse and Vishay parts are REACH Unaffected; Diodes Incorporated and Micro Commercial Co variants are REACH Affected or Unaffected as specified. Verify REACH compliance requirements for your specific application and region.
Frequently Asked Questions (FAQ)
Q: Can I substitute P6KE56A-T with any of the listed parts?
A: Yes, all listed parts meet the electrical and mechanical requirements for direct substitution. The primary difference is product status—the original P6KE56A-T is obsolete, while all substitutes are active. Select based on packaging preference (DO-15, DO-204AC, or Axial) and availability.
Q: What is the difference between DO-15 and DO-204AC packaging?
A: DO-15 and DO-204AC are equivalent package designations for the same through-hole axial lead format. Both accommodate the same PCB footprint and lead spacing. Some manufacturers use DO-15 nomenclature while others use DO-204AC; they are physically and electrically interchangeable.
Q: Are the Littelfuse TP6KE56A and P6KE56A-B truly equivalent?
A: Yes. Both are manufactured by Littelfuse with identical voltage ratings (47.8V standoff, 77V clamp) and peak pulse current of 7.9A. The primary difference is packaging format: TP6KE56A is supplied in Cut Tape (CT), while P6KE56A-B is supplied in Bulk. Both are ROHS3 compliant and active products.
Q: Which substitute should I use for automotive applications?
A: For automotive-grade requirements, specify P6KE56AHE3/54 (Vishay) or TP6KE56A (Littelfuse). Both carry AEC-Q101 qualification and automotive-grade designation, ensuring compliance with automotive reliability and qualification standards.
Q: Does operating temperature range affect substitution?
A: Most substitutes operate across -55°C to 175°C, matching the original specification. P6KE56AE3/TR13 operates at -65°C to 150°C, providing extended low-temperature performance but reduced high-temperature capability. Select based on your application's thermal requirements.
Q: What inventory levels are available for these substitutes?
A: Littelfuse TP6KE56A has the highest inventory at 5,480 pieces. P6KE56A-E3/54 (Vishay) has 2,724 pieces. Fairchild P6KE56A has 2,300 pieces. Micro Commercial Co variants (P6KE56A-AP, P6KE56A-BP, P6KE56A-TP) range from 754 to 855 pieces. Verify current availability with your supplier.
Q: Are there any compliance or certification differences I should consider?
A: All parts are ROHS3 compliant. REACH status varies: Littelfuse and Vishay parts are REACH Unaffected, while Diodes Incorporated and Micro Commercial Co parts are REACH Affected. Confirm REACH compliance requirements for your target market before final selection.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts