SA36 Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SA36 is a unidirectional Zener-type transient voltage suppressor diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. The device features a 36V reverse standoff voltage with a 61.01V maximum clamping voltage and 8.8A peak pulse current capability in a through-hole DO-204AC (DO-15) axial package. The SA36 is classified as obsolete, necessitating identification of active equivalent parts that maintain electrical and mechanical compatibility for ongoing production and field replacement requirements.

Substiute Parts

SA36

Littelfuse Inc.In Stock: 848SA36 Datasheet

Current PartRFQ

SA36A

Taiwan Semiconductor CorporationIn Stock: 2213SA36A Datasheet

DirectRFQ

SA36A-B

Littelfuse Inc.In Stock: 2430SA36A-B Datasheet

MFR RecommendedRFQ

SA36A-AP

Micro Commercial CoIn Stock: 1144SA36A-AP Datasheet

MFR RecommendedRFQ

SA36A-BP

Micro Commercial CoIn Stock: 1160SA36A-BP Datasheet

MFR RecommendedRFQ

SA36A-TP

Micro Commercial CoIn Stock: 682SA36A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA36 are qualified based on the following electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 36V
• Voltage - Breakdown (Min): 37.89V minimum
• Voltage - Clamping (Max) @ Ipp: 58.1V to 61.01V range
• Current - Peak Pulse (10/1000µs): 8.8A to 9A
• Power - Peak Pulse: 500W
• Type: Zener
• Unidirectional Channels: 1

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: DO-204AC, DO-15, Axial
• Operating Temperature Range: -55°C to 175°C (TJ)

All substitute parts maintain these core electrical and mechanical specifications, ensuring functional equivalence in circuit protection applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SA36A-B (Littelfuse Inc.)

SA36A-B is the manufacturer-recommended direct replacement for the obsolete SA36. As an active product from the original manufacturer, it maintains identical electrical performance with 8.8A peak pulse current and 58.1V clamping voltage. The part carries ROHS3 compliance and MSL 1 rating, with REACH status indicating affected substances requiring documentation. Bulk packaging is suitable for production environments.

Secondary Recommendation: SA36A (Taiwan Semiconductor Corporation)

SA36A provides active product status with equivalent electrical specifications, featuring 9A peak pulse current and 58.1V clamping voltage. The part is ROHS3 compliant with MSL 1 rating and REACH unaffected status. Tape & Reel packaging supports automated assembly processes. Higher inventory availability (2178 pcs) supports supply chain continuity.

Alternative Options: SA36A-AP, SA36A-BP, SA36A-TP (Micro Commercial Co)

These three variants from Micro Commercial Co maintain identical electrical specifications (8.8A peak pulse, 58.1V clamping) and thermal ratings. All three are active products with REACH unaffected status. Bulk packaging is provided. Selection among these three variants depends on specific procurement and inventory requirements, as electrical performance is equivalent.

Frequently Asked Questions (FAQ)

Q: Can SA36A substitute for SA36 in existing designs?

A: Yes. SA36A maintains the same 36V reverse standoff voltage, 58.1V clamping voltage, 8.8A peak pulse current, and DO-204AC through-hole package. Electrical performance is compatible for general-purpose transient voltage suppression applications.

Q: What is the difference between SA36A-B and SA36A?

A: Both parts share identical electrical specifications (36V standoff, 58.1V clamping, 8.8A peak pulse). The primary differences are manufacturer (Littelfuse vs. Taiwan Semiconductor), packaging format (Bulk vs. Tape & Reel), and regulatory status (REACH Affected vs. Unaffected). SA36A-B is the direct manufacturer replacement.

Q: Are SA36A-AP, SA36A-BP, and SA36A-TP electrically equivalent?

A: Yes. All three Micro Commercial Co variants maintain identical electrical specifications: 36V reverse standoff, 58.1V clamping voltage, 8.8A peak pulse current, 500W peak pulse power, and -55°C to 175°C operating temperature range. Selection depends on procurement availability and inventory requirements.

Q: Does the clamping voltage difference between SA36 (61.01V) and substitute parts (58.1V) affect compatibility?

A: The substitute parts feature lower maximum clamping voltage (58.1V vs. 61.01V), which provides improved transient suppression performance. This is compatible with applications designed for the SA36, as the lower clamping voltage represents enhanced protection characteristics.

Q: What packaging options are available for SA36 substitutes?

A: SA36A is available in Tape & Reel format for automated assembly. SA36A-B, SA36A-AP, SA36A-BP, and SA36A-TP are available in Bulk packaging. All maintain the through-hole DO-204AC (DO-15) axial package format.

Q: Are all substitute parts RoHS compliant?

A: SA36A and SA36A-B are explicitly ROHS3 compliant. RoHS compliance status is not specified for SA36A-AP, SA36A-BP, and SA36A-TP variants. Verify RoHS requirements with supplier documentation for these parts.