Equivalent & Substitute Parts for P4SMA36C TVS Diode

Part Overview

The P4SMA36C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 30.8V reverse standoff voltage with a 52.4V maximum clamping voltage and 8.2A peak pulse current capability in a DO-214AC (SMA) package.

The P4SMA36C is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. Substitute parts must maintain electrical compatibility across key parameters including reverse standoff voltage, peak pulse current, clamping voltage, and thermal operating range to ensure functional equivalence in circuit protection applications.

Substiute Parts

P4SMA36C

Littelfuse Inc.In Stock: 2247P4SMA36C Datasheet

Current PartRFQ

P4SMA36CA

Eaton - Electronics DivisionIn Stock: 25536P4SMA36CA Datasheet

DirectRFQ

P4SMA36CA

Eaton - Electronics DivisionIn Stock: 25536P4SMA36CA Datasheet

DirectRFQ

SMAJP4KE36CA-TP

Micro Commercial CoIn Stock: 1093SMAJP4KE36CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the P4SMA36C are qualified based on strict electrical and mechanical parameter alignment. The following criteria determine substitution eligibility:

Critical Electrical Parameters:

• Reverse standoff voltage: 30.8V (nominal)
• Peak pulse current: 8.2A
• Clamping voltage: within acceptable range for circuit protection function
• Power dissipation: 400W peak pulse capability
• Zener type, bidirectional, single-channel configuration

Mechanical Parameters:

• Surface-mount technology
• DO-214AC or SMA package compatibility
• Moisture sensitivity level: 1 (Unlimited)

Compliance Requirements:

• RoHS compliance status
• ECCN and HTSUS classifications maintained

Two substitute parts meet these criteria: P4SMA36CA (Eaton - Electronics Division) and SMAJP4KE36CA-TP (Micro Commercial Co). Both maintain the core electrical specifications while offering active product status and improved availability compared to the obsolete P4SMA36C.

Parameter Comparison

Engineering Selection Recommendations

P4SMA36CA (Eaton - Electronics Division) is the primary substitute for the P4SMA36C. This part maintains identical reverse standoff voltage (30.8V) and peak pulse current (8.2A) specifications. The clamping voltage is reduced from 52.4V to 49.9V, providing tighter voltage regulation. The part is active in production with 25,500 units in stock, ensuring long-term availability. Operating temperature range is -55 to 150°C, which covers most industrial and commercial applications. RoHS compliance is maintained. This part is supplied in Tape & Reel packaging, suitable for automated assembly processes.

SMAJP4KE36CA-TP (Micro Commercial Co) serves as an alternative substitute with identical electrical specifications to the P4SMA36CA. This part offers an extended upper operating temperature limit of 175°C, making it suitable for high-temperature applications. The part is active in production with 1,075 units in stock. REACH status is unaffected. Packaging is supplied in bulk format. The DO-214AC (SMAJ) package variant maintains mechanical compatibility with standard SMA footprints.

Both substitutes are qualified based on matching critical electrical parameters, active product status, and maintained compliance certifications. Selection between P4SMA36CA and SMAJP4KE36CA-TP depends on specific application temperature requirements and packaging preferences.

Frequently Asked Questions (FAQ)

Q: Can P4SMA36CA directly replace P4SMA36C in existing designs?

A: Yes. Both parts share identical reverse standoff voltage (30.8V) and peak pulse current (8.2A). The clamping voltage difference (52.4V vs. 49.9V) represents improved voltage regulation. Footprint compatibility is maintained through DO-214AC (SMA) package equivalence. No circuit modifications are required.

Q: What is the significance of the clamping voltage difference between P4SMA36C and its substitutes?

A: The P4SMA36C clamps at 52.4V maximum, while P4SMA36CA and SMAJP4KE36CA-TP clamp at 49.9V. Lower clamping voltage provides tighter protection margins for sensitive downstream components. This is a functional improvement for overvoltage suppression applications.

Q: Are there temperature range limitations when substituting P4SMA36C?

A: The original P4SMA36C operates from -65 to 150°C. P4SMA36CA operates from -55 to 150°C, reducing the lower temperature limit by 10°C. SMAJP4KE36CA-TP extends the upper limit to 175°C. Verify application temperature requirements before selection.

Q: What packaging differences exist between substitute parts?

A: P4SMA36CA is supplied in Tape & Reel (TR) format for automated assembly. SMAJP4KE36CA-TP is supplied in bulk packaging. Both use DO-214AC (SMA/SMAJ) surface-mount packages with identical PCB footprints. Packaging choice depends on assembly process requirements.

Q: Are both substitute parts RoHS compliant?

A: P4SMA36CA is RoHS compliant. SMAJP4KE36CA-TP has REACH unaffected status. Both meet environmental compliance requirements for most applications. Verify specific regulatory requirements for your end application.

Q: What is the availability status of substitute parts?

A: P4SMA36CA has 25,500 units in stock (active production). SMAJP4KE36CA-TP has 1,075 units in stock (active production). Both parts are actively manufactured, ensuring long-term supply compared to the obsolete P4SMA36C.