SA7.0ARL Equivalent & Substitute Parts

Part Overview

The SA7.0ARL is a 7V Zener transient voltage suppressor (TVS) diode manufactured by onsemi in axial through-hole packaging. This unidirectional TVS diode is designed for general-purpose transient voltage protection with a 12V maximum clamping voltage and 41.7A peak pulse current capability. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

SA7.0ARL

onsemiIn Stock: 808SA7.0ARL Datasheet

Current PartRFQ

SA7.0A

Taiwan Semiconductor CorporationIn Stock: 300296SA7.0A Datasheet

DirectRFQ

P6KE8.2A

Taiwan Semiconductor CorporationIn Stock: 9341P6KE8.2A Datasheet

SimilarRFQ

P6KE8.2A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 1546P6KE8.2A-E3/54 Datasheet

SimilarRFQ

P6KE8V2A

Fairchild SemiconductorIn Stock: 36217P6KE8V2A Datasheet

SimilarRFQ

SA7.5A

Taiwan Semiconductor CorporationIn Stock: 300283SA7.5A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SA7.0ARL are selected based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Voltage - Reverse Standoff (Typ): 7V ± tolerance
• Voltage - Clamping (Max) @ Ipp: 12V ± tolerance
• Current - Peak Pulse (10/1000µs): ≥ 41.7A
• Power - Peak Pulse: ≥ 500W
• Mounting Type: Through Hole
• Package / Case: DO-204AC, DO-15, or Axial compatible
• Type: Zener, Unidirectional

Substitution Categories:

Direct Equivalent: SA7.0A (Taiwan Semiconductor Corporation) — Identical voltage ratings and clamping characteristics with enhanced current capability (43A) and active product status.

Similar Equivalents: P6KE8.2A, P6KE8.2A-E3/54, P6KE8V2A, and SA7.5A — These parts maintain compatible voltage and clamping parameters within acceptable engineering tolerances while offering equal or superior power dissipation (600W) and current handling. Standoff voltages range from 7.02V to 7.5V, with clamping voltages from 12.1V to 12.9V, all within functional compatibility for general-purpose transient protection applications.

Parameter Comparison

Engineering Selection Recommendations

SA7.0A (Direct Equivalent): This is the primary recommended substitute. It maintains identical voltage ratings (7V standoff, 12V clamping) with marginally higher peak pulse current (43A vs 41.7A). The part is in active production status with ROHS3 compliance and extended operating temperature range (-55°C to 175°C), providing superior long-term availability and regulatory compliance compared to the obsolete SA7.0ARL.

P6KE8.2A, P6KE8.2A-E3/54, P6KE8V2A (Higher Power Alternatives): These parts offer 600W peak pulse power versus 500W for the main part, with standoff voltages of 7.02V and clamping voltages of 12.1V. All three are in active production with ROHS3 compliance (except P6KE8V2A, which has unspecified compliance). These are suitable where additional transient energy absorption capacity is required. P6KE8.2A-E3/54 (Vishay) and P6KE8.2A (Taiwan Semiconductor) are available in standard packaging formats. P6KE8V2A (Fairchild) is available in bulk packaging.

SA7.5A (Higher Voltage Alternative): This part features a 7.5V standoff voltage and 12.9V clamping voltage with 40A peak pulse current. It is suitable for applications requiring slightly higher voltage thresholds while maintaining compatible through-hole axial packaging. ROHS3 compliant and in active production.

Frequently Asked Questions (FAQ)

Q: Can SA7.0A directly replace SA7.0ARL without circuit modification?

A: Yes. SA7.0A maintains identical voltage ratings (7V standoff, 12V clamping) and equivalent current handling (43A vs 41.7A). Both use DO-204AC/DO-15 axial through-hole packaging. No circuit modifications are required.

Q: What is the difference between SA7.0A and the P6KE series substitutes?

A: SA7.0A is a direct voltage equivalent with identical clamping characteristics. The P6KE series (P6KE8.2A, P6KE8.2A-E3/54, P6KE8V2A) offers higher power dissipation (600W vs 500W) and slightly higher clamping voltages (12.1V vs 12V). These are suitable for applications requiring greater transient energy absorption.

Q: Are all substitute parts RoHS compliant?

A: Most substitutes are ROHS3 compliant (SA7.0A, P6KE8.2A, P6KE8.2A-E3/54, SA7.5A). The original SA7.0ARL is RoHS non-compliant. P6KE8V2A compliance status is not specified in available documentation.

Q: Does operating temperature range affect part selection?

A: The SA7.0ARL operates from -55°C to 150°C. Most active substitutes extend this to -55°C to 175°C, providing better performance in high-temperature environments. This is an advantage for long-term reliability but does not affect functional compatibility in standard operating conditions.

Q: Can SA7.5A be used as a substitute for SA7.0ARL?

A: SA7.5A is functionally compatible with a higher voltage threshold (7.5V standoff vs 7V). It is suitable where slightly elevated voltage protection is acceptable. The 12.9V clamping voltage is marginally higher than the 12V specification of SA7.0ARL.

Q: What packaging formats are available for these substitutes?

A: All substitutes use DO-204AC, DO-15, or axial through-hole packaging compatible with the original SA7.0ARL. Specific packaging availability varies by manufacturer: SA7.0A and SA7.5A are available in Tape & Reel format; P6KE8.2A-E3/54 is available in Cut Tape; P6KE8V2A is available in Bulk.

Q: Are there inventory considerations for these substitutes?

A: SA7.0A and SA7.5A have high inventory levels (300,200 pcs each). P6KE8V2A has substantial inventory (36,160 pcs). P6KE8.2A has moderate inventory (9,316 pcs). P6KE8.2A-E3/54 has lower inventory (1,480 pcs). Procurement timelines should account for these availability levels.