SA9.0ARLG Equivalent & Substitute Parts

Part Overview

The SA9.0ARLG is a transient voltage suppressor (TVS) diode manufactured by onsemi, designed for general-purpose overvoltage protection in through-hole axial configurations. This component features a 9V reverse standoff voltage with a 15.4V maximum clamping voltage and 32.5A peak pulse current capability. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning.

Substiute Parts

SA9.0ARLG

onsemiIn Stock: 1138SA9.0ARLG Datasheet

Current PartRFQ

1N8152

Microchip TechnologyIn Stock: 10861N8152 Datasheet

SimilarRFQ

SA9.0A

Taiwan Semiconductor CorporationIn Stock: 300450SA9.0A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SA9.0ARLG is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 9V
• Voltage - Clamping (Max) @ Ipp: 15.4V
• Mounting Type: Through Hole
• Package / Case: Axial configuration
• Unidirectional Channels: 1

The identified substitute parts maintain compatibility across these core electrical and mechanical specifications. Variations in peak pulse current (Ipp) and power dissipation are acceptable within the application context, provided the voltage parameters remain within the specified ranges. Operating temperature range and product status are secondary considerations for substitution feasibility.

Parameter Comparison

Engineering Selection Recommendations

SA9.0A (Taiwan Semiconductor Corporation) is the primary substitute for the SA9.0ARLG. This part maintains identical voltage specifications (9V standoff, 15.4V clamping), equivalent peak pulse current (34A vs. 32.5A), and matching power dissipation (500W). The SA9.0A is actively manufactured, offers extended operating temperature range (-55°C ~ 175°C), and is RoHS3 compliant. Package compatibility is confirmed across DO-204AC, DO-15, and axial configurations.

1N8152 (Microchip Technology) is a secondary substitute suitable for applications where peak pulse current requirements are lower. This part meets the voltage specifications (9V standoff, 15.6V clamping) but provides reduced peak pulse current (9.62A) and power dissipation (150W). The 1N8152 is actively manufactured with extended operating temperature range (-55°C ~ 175°C). This substitute is appropriate only for designs where the lower current rating is acceptable. Note that RoHS compliance status differs from the primary substitute.

Frequently Asked Questions (FAQ)

Q: Can the SA9.0A directly replace the SA9.0ARLG without circuit modification?

A: Yes. The SA9.0A maintains identical voltage parameters (9V standoff, 15.4V clamping) and equivalent current handling (34A vs. 32.5A). Both parts use through-hole axial packaging. No circuit modifications are required.

Q: What is the key difference between the SA9.0A and 1N8152 substitutes?

A: The primary difference is peak pulse current capacity. The SA9.0A provides 34A with 500W power dissipation, matching the original specification. The 1N8152 provides 9.62A with 150W power dissipation. Select based on your circuit's transient current requirements.

Q: Why is the SA9.0ARLG listed as obsolete?

A: The SA9.0ARLG is no longer manufactured by onsemi. Active alternatives from other manufacturers ensure continued design support and component availability.

Q: Are there package compatibility concerns between these parts?

A: All three parts use through-hole axial packaging. The SA9.0A and SA9.0ARLG both support DO-204AC and DO-15 designations. The 1N8152 uses standard axial packaging. Physical dimensions should be verified against your PCB layout, though standard axial packages are mechanically interchangeable.

Q: What compliance certifications should I consider?

A: The SA9.0A is RoHS3 compliant with MSL 1 (unlimited moisture sensitivity level). The 1N8152 is RoHS non-compliant. Both parts are REACH unaffected and classified as EAR99 for export control purposes. Select based on your product's regulatory requirements.

Q: Can I use the 1N8152 in a high-current transient protection circuit?

A: The 1N8152's 9.62A peak pulse current is significantly lower than the original 32.5A specification. Use only if your circuit's transient current does not exceed this limit. For applications requiring the full 32.5A+ capability, the SA9.0A is the appropriate choice.