SA26ARLG Equivalent & Substitute Parts

Part Overview

The SA26ARLG is a 26V Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in through-hole applications. This part operates with a 26V reverse standoff voltage, 42.1V maximum clamping voltage, and 11.9A peak pulse current capability in a DO-204AC (DO-15) axial package. The SA26ARLG is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and component procurement.

Substiute Parts

SA26ARLG

Littelfuse Inc.In Stock: 1216SA26ARLG Datasheet

Current PartRFQ

SA26A

Fairchild SemiconductorIn Stock: 5783SA26A Datasheet

DirectRFQ

SA26A-B

Littelfuse Inc.In Stock: 687SA26A-B Datasheet

MFR RecommendedRFQ

P5KE26A-TP

Micro Commercial CoIn Stock: 1072P5KE26A-TP Datasheet

MFR RecommendedRFQ

P6KE30A

Taiwan Semiconductor CorporationIn Stock: 25293P6KE30A Datasheet

MFR RecommendedRFQ

SA26A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 889SA26A-E3/54 Datasheet

MFR RecommendedRFQ

SA26AHE3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 871SA26AHE3/54 Datasheet

MFR RecommendedRFQ

SAC26-BP

Micro Commercial CoIn Stock: 1063SAC26-BP Datasheet

MFR RecommendedRFQ

SAC26-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 1160SAC26-E3/54 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SA26ARLG is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 26V ± tolerance
• Voltage - Clamping (Max) @ Ipp: 42.1V ± tolerance
• Current - Peak Pulse (10/1000µs): minimum 11.9A
• Power - Peak Pulse: minimum 500W
• Mounting Type: Through Hole
• Package / Case: DO-204AC or DO-15 compatible

Substitute parts must maintain electrical equivalence within these parameters and support the same through-hole axial mounting configuration. Parts with identical or superior current and power ratings, combined with matching voltage specifications, are considered direct substitutes.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Exact Electrical Match)

SA26A-B, SA26A-E3/54, and SA26AHE3/54 provide direct electrical equivalence to the SA26ARLG with identical voltage and power specifications. SA26A-B and SA26A-E3/54 are active products from established manufacturers, ensuring long-term availability. SA26AHE3/54 includes AEC-Q101 automotive qualification and extended temperature range (-55°C ~ 175°C), suitable for applications requiring automotive-grade reliability.

Secondary Substitutes (Minor Parameter Variance)

P5KE26A-TP maintains exact voltage and current specifications with extended lower temperature range (-65°C ~ 175°C), providing enhanced cold-temperature performance. SAC26-BP and SAC26-E3/54 exhibit slightly elevated clamping voltage (42.3V) and reduced peak pulse current (11.1A) but remain within functional equivalence for general-purpose applications.

Alternative Substitute (Higher Performance)

P6KE30A operates at 25.6V reverse standoff with 41.4V clamping voltage and delivers superior current handling (14.5A) and power dissipation (600W). This part is suitable for applications requiring enhanced transient suppression capability, though voltage specifications deviate slightly from the original design.

Compliance and Availability

All recommended substitutes maintain ROHS3 compliance and REACH compliance status. Active product status ensures procurement availability for SA26A-B, P5KE26A-TP, P6KE30A, SA26A-E3/54, SA26AHE3/54, SAC26-BP, and SAC26-E3/54.

Frequently Asked Questions (FAQ)

Q: Can SA26A-B directly replace SA26ARLG in existing designs?

A: Yes. SA26A-B provides identical electrical specifications (26V standoff, 42.1V clamping, 500W peak power) and compatible DO-204AC packaging. The extended operating temperature range (-55°C ~ 175°C versus -55°C ~ 150°C) offers improved thermal margin. Active product status ensures continued availability.

Q: What is the difference between SA26A-E3/54 and SA26AHE3/54?

A: Both parts share identical electrical specifications and packaging. SA26AHE3/54 includes AEC-Q101 automotive qualification and is designated for automotive applications. SA26A-E3/54 is suitable for general-purpose industrial applications. Selection depends on application requirements.

Q: Is P6KE30A a suitable replacement for SA26ARLG?

A: P6KE30A operates at slightly lower reverse standoff voltage (25.6V versus 26V) and lower clamping voltage (41.4V versus 42.1V), but delivers higher peak pulse current (14.5A versus 11.9A) and power dissipation (600W versus 500W). This part is functionally equivalent for general-purpose transient suppression but should be evaluated for specific circuit voltage thresholds.

Q: What packaging options are available for substitutes?

A: All substitute parts are available in DO-204AC (DO-15) axial through-hole packages compatible with SA26ARLG. Packaging variants include bulk, tape & reel, and cut tape options depending on manufacturer and part number. Verify packaging availability with your supplier for production requirements.

Q: Are there temperature-related considerations when selecting a substitute?

A: SA26ARLG operates to 150°C junction temperature. Most substitutes extend to 175°C, providing improved thermal headroom. P5KE26A-TP extends the lower temperature limit to -65°C for enhanced cold-temperature performance. Select based on your application's thermal environment.

Q: Do all substitutes maintain RoHS3 compliance?

A: Yes. All recommended substitute parts are RoHS3 compliant and REACH compliant, meeting current environmental and regulatory requirements for electronic component procurement.