P4SMA8.5A BK Equivalent & Substitute Parts

Part Overview

The P4SMA8.5A BK is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Central Semiconductor Corp, designed for general-purpose overvoltage protection in surface mount applications. This component features an 8.5V reverse standoff voltage with a 14.4V maximum clamping voltage and 27.7A peak pulse current capability in a compact SMA package.

The P4SMA8.5A BK is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

P4SMA8.5A BK

Central Semiconductor CorpIn Stock: 979P4SMA8.5A BK Datasheet

Current PartRFQ

SMAJ8.5A-13-F

Diodes IncorporatedIn Stock: 28707SMAJ8.5A-13-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P4SMA8.5A BK is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Unidirectional Zener TVS diode topology with single channel configuration
• Voltage - Reverse Standoff (Typ): 8.5V
• Voltage - Breakdown (Min): 9.44V
• Voltage - Clamping (Max) @ Ipp: 14.4V
• Current - Peak Pulse (10/1000µs): 27.7A
• Power - Peak Pulse: 400W
• Package / Case: DO-214AC, SMA (surface mount)
• Operating Temperature Range: -55°C ~ 150°C (TJ)

The substitute part SMAJ8.5A-13-F from Diodes Incorporated meets all specified electrical and mechanical parameters, ensuring functional and physical compatibility in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

The SMAJ8.5A-13-F from Diodes Incorporated is a direct functional equivalent to the obsolete P4SMA8.5A BK. Both components share identical electrical specifications and package form factors, enabling direct substitution in existing designs without circuit modification.

The substitute part offers the advantage of active product status, ensuring ongoing availability and supply chain support. The SMAJ8.5A-13-F is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement and manufacturing.

Both parts maintain equivalent moisture sensitivity levels (MSL 1 - Unlimited) and export classifications (ECCN EAR99), ensuring compatibility with existing handling, storage, and logistics procedures.

Frequently Asked Questions (FAQ)

Q: Can SMAJ8.5A-13-F be used as a direct replacement for P4SMA8.5A BK?

A: Yes. Both components are unidirectional Zener TVS diodes with identical electrical parameters (8.5V reverse standoff, 14.4V clamping voltage, 27.7A peak pulse current, 400W peak power) and the same SMA surface mount package. No circuit modifications are required.

Q: Are there any differences in package dimensions between these parts?

A: Both parts use the DO-214AC, SMA package form factor. No physical layout changes are necessary when substituting SMAJ8.5A-13-F for P4SMA8.5A BK.

Q: What is the significance of the P4SMA8.5A BK being obsolete?

A: Obsolete status indicates the part is no longer manufactured by Central Semiconductor Corp. The SMAJ8.5A-13-F substitute maintains active production status, providing reliable long-term supply availability.

Q: Are there compliance or certification differences between these parts?

A: Both parts share identical moisture sensitivity levels (MSL 1 - Unlimited), export classifications (ECCN EAR99), and tariff codes (HTSUS 8541.10.0080). The SMAJ8.5A-13-F additionally carries ROHS3 compliance and REACH unaffected status, meeting current regulatory standards.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution is based on matching the reverse standoff voltage (8.5V), breakdown voltage (9.44V minimum), clamping voltage (14.4V maximum), peak pulse current (27.7A), and peak pulse power (400W). All these parameters are identical between the main part and substitute.