SA36ARL Equivalent & Substitute Parts

Part Overview

The SA36ARL is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by onsemi, designed for general-purpose overvoltage protection applications. Featuring a 36V reverse standoff voltage and 58.1V maximum clamping voltage, this component provides transient suppression with 8.6A peak pulse current capability in an axial through-hole package.

The SA36ARL is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades.

Substiute Parts

SA36ARL

onsemiIn Stock: 936SA36ARL Datasheet

Current PartRFQ

SA36A

Taiwan Semiconductor CorporationIn Stock: 2213SA36A Datasheet

DirectRFQ

1N8166

Microchip TechnologyIn Stock: 10321N8166 Datasheet

SimilarRFQ

SA36A-B

Littelfuse Inc.In Stock: 2430SA36A-B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA36ARL are identified based on strict electrical and mechanical parameter alignment within the TVS diode category. The substitution criteria are:

Primary Electrical Parameters:

• Voltage - Reverse Standoff: 36V (exact match required)
• Voltage - Breakdown (Min): 40V or higher
• Voltage - Clamping (Max) @ Ipp: 58.1V (within tolerance)
• Current - Peak Pulse (10/1000µs): minimum 8.6A
• Power - Peak Pulse: 500W or higher

Mechanical Parameters:

• Mounting Type: Through Hole (required)
• Package / Case: DO-204AC, DO-15, or Axial (compatible)
• Type: Zener (required)
• Unidirectional Channels: 1 (required)

Compliance Considerations:

• RoHS Status and REACH Status are noted for regulatory compliance assessment
• Product Status (Active vs. Obsolete) indicates long-term availability

Parameter Comparison

Engineering Selection Recommendations

SA36A (Taiwan Semiconductor Corporation) is the primary direct substitute. It maintains identical voltage specifications (36V standoff, 40V breakdown, 58.1V clamping) and equivalent current rating (9A vs. 8.6A). The SA36A is Active status with ROHS3 compliance, supporting long-term availability and regulatory requirements. Operating temperature range extends to 175°C, providing improved thermal margin over the original SA36ARL.

SA36A-B (Littelfuse Inc.) is a secondary direct substitute with matching electrical parameters (36V standoff, 40V breakdown, 58.1V clamping, 8.8A current). Active status and ROHS3 compliance ensure availability and regulatory alignment. Operating temperature extends to 175°C. REACH Status is listed as Affected, requiring verification against specific application requirements.

1N8166 (Microchip Technology) is a compatible substitute with matching voltage specifications but reduced current capacity (2.54A vs. 8.6A) and lower power dissipation (150W vs. 500W). This part is suitable only for applications where peak pulse current does not exceed 2.54A. RoHS non-compliance status matches the original part. Use is restricted to designs with lower transient energy requirements.

Frequently Asked Questions (FAQ)

Q: Can SA36A directly replace SA36ARL in existing designs?

A: Yes. The SA36A maintains identical reverse standoff voltage (36V), breakdown voltage (40V), and clamping voltage (58.1V). Current rating is slightly higher (9A vs. 8.6A), and operating temperature range is extended to 175°C. Physical package compatibility (DO-204AC, DO-15, Axial) is confirmed. No circuit modifications are required.

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

A: Both parts share identical electrical specifications (36V standoff, 40V breakdown, 58.1V clamping). The primary difference is manufacturer (Littelfuse vs. Taiwan Semiconductor) and REACH compliance status. SA36A-B is REACH Affected; SA36A is REACH Unaffected. Selection depends on supply chain and regulatory requirements.

Q: Is 1N8166 a suitable replacement for SA36ARL?

A: 1N8166 is electrically compatible for voltage parameters but has significantly reduced current capacity (2.54A vs. 8.6A) and power dissipation (150W vs. 500W). Use only in applications where peak pulse current remains below 2.54A. For designs requiring full 8.6A capability, SA36A or SA36A-B are required.

Q: What packaging options are available for these substitutes?

A: SA36A and SA36A-B are available in DO-204AC (DO-15) axial packages, matching the original SA36ARL. 1N8166 is supplied in axial package. All three maintain through-hole mounting compatibility with the original design.

Q: Are there temperature rating considerations when substituting?

A: The SA36ARL operates to 150°C (TJ). SA36A, SA36A-B, and 1N8166 all extend to 175°C (TJ), providing additional thermal margin. This improvement does not create compatibility issues and may enhance reliability in temperature-sensitive applications.

Q: What compliance status should I verify before selection?

A: SA36A and SA36A-B are ROHS3 compliant, supporting modern regulatory requirements. The original SA36ARL and 1N8166 are RoHS non-compliant. For new designs or regulated applications, SA36A or SA36A-B are recommended. Verify REACH status requirements: SA36A is REACH Unaffected; SA36A-B is REACH Affected.