P6KE12 Equivalent & Substitute Parts

Part Overview

The P6KE12 is a unidirectional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) axial package, rated for 600W peak pulse power and designed for general-purpose overvoltage protection applications. The main part (Littelfuse P6KE12) is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

P6KE12

LittelfuseIn Stock: 777P6KE12 Datasheet

Current PartRFQ

P6KE12A

Fairchild SemiconductorIn Stock: 3416P6KE12A Datasheet

MFR RecommendedRFQ

P6KE12A

Fairchild SemiconductorIn Stock: 3416P6KE12A Datasheet

MFR RecommendedRFQ

P6KE12A-TP

Micro Commercial CoIn Stock: 4740P6KE12A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the P6KE12 is based on the following electrical and mechanical criteria:

• Voltage - Reverse Standoff (Typ): 10.2V (exact match required)
• Voltage - Clamping (Max) @ Ipp: 16.7V to 17.54V (acceptable range for general-purpose protection)
• Power - Peak Pulse: 600W (exact match required)
• Package / Case: DO-204AC, DO-15, Axial (exact match required)
• Unidirectional Channels: 1 (exact match required)
• Type: Zener (exact match required)

The substitute parts P6KE12A (Fairchild Semiconductor) and P6KE12A-TP (Micro Commercial Co) meet all substitution criteria. Both maintain the same reverse standoff voltage, comparable clamping voltage performance, identical power rating, and identical package configuration. The primary difference is product status: the substitutes are active production parts, whereas the original P6KE12 is obsolete.

Parameter Comparison

Engineering Selection Recommendations

Both P6KE12A variants are direct functional equivalents for the obsolete P6KE12. Selection between them should be based on:

• P6KE12A (Fairchild Semiconductor): Active production status with 3361 units in stock. Suitable for applications requiring standard commercial availability.

• P6KE12A-TP (Micro Commercial Co): Active production status with 4688 units in stock and Cut Tape (CT) packaging. Offers higher inventory availability and is ROHS3 compliant with MSL 1 rating, matching the original part's compliance profile.

Both parts maintain ECCN EAR99 and HTSUS 8541.10.0080 classifications consistent with the original P6KE12. Operating temperature range differs slightly: P6KE12A operates from -50°C to 175°C, while P6KE12A-TP matches the original specification of -55°C to 175°C. For applications requiring the full -55°C lower temperature limit, P6KE12A-TP is the appropriate selection.

Frequently Asked Questions (FAQ)

Q: Can P6KE12A or P6KE12A-TP be used as direct replacements for P6KE12?

A: Yes. Both substitute parts maintain identical reverse standoff voltage (10.2V), comparable clamping voltage performance (16.7V vs. 17.54V), identical power rating (600W), and identical package configuration (DO-204AC, DO-15, Axial). They are functionally equivalent for general-purpose transient voltage suppression applications.

Q: What is the difference between P6KE12A and P6KE12A-TP?

A: Both are electrically equivalent. The primary differences are manufacturer (Fairchild Semiconductor vs. Micro Commercial Co), packaging format (standard vs. Cut Tape), and inventory availability. P6KE12A-TP includes ROHS3 compliance and MSL 1 rating documentation matching the original part.

Q: Does the clamping voltage difference (17.54V vs. 16.7V) affect compatibility?

A: No. The substitute parts' lower clamping voltage (16.7V) provides improved protection performance compared to the original specification (17.54V). Both values fall within acceptable ranges for general-purpose TVS diode applications and do not compromise circuit protection.

Q: Are there temperature range considerations when substituting?

A: P6KE12A operates from -50°C to 175°C, while P6KE12A-TP operates from -55°C to 175°C. For applications requiring operation below -50°C, P6KE12A-TP is required to match the original P6KE12 specification (-55°C to 175°C).

Q: What compliance certifications apply to these substitute parts?

A: Both substitute parts carry ECCN EAR99 and HTSUS 8541.10.0080 classifications. P6KE12A-TP is ROHS3 compliant with MSL 1 (Unlimited) rating. Compliance documentation should be verified with the respective manufacturer for specific application requirements.