SA8V5CA Equivalent & Substitute Parts Reference

Part Overview

The SA8V5CA is a transient voltage suppressor (TVS) diode manufactured by onsemi, designed for general-purpose overvoltage protection in through-hole applications. This component features an 8.5V reverse standoff voltage with a 14.4V maximum clamping voltage and 34.7A peak pulse current capability in a DO-15 package. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production requirements.

Substiute Parts

SA8V5CA

onsemiIn Stock: 912SA8V5CA Datasheet

Current PartRFQ

SA8.5CA-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 999SA8.5CA-E3/54 Datasheet

DirectRFQ

SA8.5CAHE3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 1150SA8.5CAHE3/54 Datasheet

DirectRFQ

P5KE8.5CA-AP

Micro Commercial CoIn Stock: 811P5KE8.5CA-AP Datasheet

SimilarRFQ

P5KE8.5CA-BP

Micro Commercial CoIn Stock: 893P5KE8.5CA-BP Datasheet

SimilarRFQ

P5KE8.5CA-TP

Micro Commercial CoIn Stock: 1017P5KE8.5CA-TP Datasheet

SimilarRFQ

P6KE10CA

Fairchild SemiconductorIn Stock: 9077P6KE10CA Datasheet

SimilarRFQ

SA8.5CA

Taiwan Semiconductor CorporationIn Stock: 16110SA8.5CA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SA8V5CA is determined by the following critical electrical and mechanical parameters:

Electrical Matching Criteria:

• Voltage - Reverse Standoff (Typ): 8.5V
• Voltage - Breakdown (Min): 9.44V
• Voltage - Clamping (Max) @ Ipp: 14.4V
• Current - Peak Pulse (10/1000µs): 34.7A minimum
• Power - Peak Pulse: 500W minimum
• Type: Zener, Bidirectional

Mechanical Matching Criteria:

• Mounting Type: Through Hole
• Package / Case: DO-204AC (DO-15), Axial

Substitute parts are classified into two categories:

Direct Substitutes maintain identical electrical specifications and package configuration, enabling pin-for-pin replacement without circuit modification.

Similar Substitutes maintain core electrical parameters within acceptable tolerance but may have minor variations in peak pulse current or clamping voltage that remain functionally equivalent for general-purpose protection applications.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Preferred for Replacement):

SA8.5CA-E3/54 and SA8.5CAHE3/54 from Vishay General Semiconductor - Diodes Division are direct electrical and mechanical equivalents. Both are active products with identical voltage and current specifications. SA8.5CAHE3/54 includes AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade components.

P5KE8.5CA-AP, P5KE8.5CA-BP, and P5KE8.5CA-TP from Micro Commercial Co maintain identical electrical parameters and through-hole DO-15 packaging. These parts are active and available in bulk packaging configurations.

SA8.5CA from Taiwan Semiconductor Corporation is functionally equivalent with a minor peak pulse current specification of 36A versus the original 34.7A, remaining within acceptable tolerance for general-purpose protection applications.

Similar Substitute (Extended Performance):

P6KE10CA from Fairchild Semiconductor provides enhanced performance with 43A peak pulse current and 600W power dissipation while maintaining the 8.5V reverse standoff voltage and 14.4V clamping voltage range. This part is suitable for applications requiring higher transient energy absorption capacity.

Compliance and Availability:

All recommended substitutes are active products with current manufacturing status. Vishay parts carry ROHS3 compliance. All parts maintain REACH unaffected status and EAR99 export classification consistent with the original SA8V5CA.

Frequently Asked Questions (FAQ)

Q: Can SA8.5CA-E3/54 directly replace SA8V5CA without circuit modification?

A: Yes. SA8.5CA-E3/54 is a direct substitute with identical electrical specifications (8.5V standoff, 14.4V clamping, 34.7A peak pulse) and compatible DO-204AC (DO-15) through-hole packaging. No circuit changes are required.

Q: What is the difference between SA8.5CAHE3/54 and SA8.5CA-E3/54?

A: Both parts are electrically identical. SA8.5CAHE3/54 includes AEC-Q101 automotive qualification and is rated for automotive applications. Select SA8.5CAHE3/54 for designs requiring automotive-grade components.

Q: Are the Micro Commercial Co P5KE8.5CA variants interchangeable?

A: Yes. P5KE8.5CA-AP, P5KE8.5CA-BP, and P5KE8.5CA-TP are electrically identical with the same voltage and current ratings. The suffix designates packaging configuration (AP, BP, TP). All are compatible replacements for SA8V5CA.

Q: Can P6KE10CA be used as a substitute?

A: P6KE10CA maintains the 8.5V reverse standoff and 14.4V clamping voltage but provides higher peak pulse current (43A) and power dissipation (600W). It is functionally compatible for general-purpose protection but offers enhanced transient energy handling. Verify that the higher performance specifications do not conflict with circuit design constraints.

Q: What packaging differences exist between substitute parts?

A: All substitutes use through-hole axial packaging compatible with DO-15 or DO-204AC footprints. SA8.5CA-E3/54 and SA8.5CAHE3/54 are specified as DO-204AC (DO-15). P5KE variants and P6KE10CA are specified as DO-15. These designations refer to the same physical package and are mechanically interchangeable.

Q: Which substitute offers the best availability?

A: SA8.5CA from Taiwan Semiconductor Corporation shows the highest inventory (16,100 pcs) among active substitutes. P5KE8.5CA-TP from Micro Commercial Co offers 942 pcs in stock. Vishay SA8.5CA-E3/54 and SA8.5CAHE3/54 provide 917 and 1,065 pcs respectively.