SMAJ10C Equivalent & Substitute Parts

Part Overview

The SMAJ10C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface mount applications. This component features a 10V reverse standoff voltage with a 17.85V maximum clamping voltage and 24.6A peak pulse current capability in a DO-214AC (SMA) package. The SMAJ10C is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements.

Substiute Parts

SMAJ10C

Littelfuse Inc.In Stock: 1192SMAJ10C Datasheet

Current PartRFQ

SMAJ10CA

MDDIn Stock: 57283SMAJ10CA Datasheet

DirectRFQ

SMAJ10CA

MDDIn Stock: 57283SMAJ10CA Datasheet

DirectRFQ

SMA6J10CA-TP

Micro Commercial CoIn Stock: 1078SMA6J10CA-TP Datasheet

MFR RecommendedRFQ

SMAJ10CA-13-F

Diodes IncorporatedIn Stock: 50247SMAJ10CA-13-F Datasheet

MFR RecommendedRFQ

SMAJ10CA-TP

Micro Commercial CoIn Stock: 11081SMAJ10CA-TP Datasheet

MFR RecommendedRFQ

SMAJ10CA-TR

STMicroelectronicsIn Stock: 20332SMAJ10CA-TR Datasheet

MFR RecommendedRFQ

SMAJ10CAE3/TR13

Microchip TechnologyIn Stock: 937SMAJ10CAE3/TR13 Datasheet

MFR RecommendedRFQ

SMAJ10CE3/TR13

Microchip TechnologyIn Stock: 1132SMAJ10CE3/TR13 Datasheet

MFR RecommendedRFQ

TV04A100JB-G

Comchip TechnologyIn Stock: 1006TV04A100JB-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ10C are qualified based on the following critical parameters:

• Voltage - Reverse Standoff (Typ): 10V
• Voltage - Clamping (Max) @ Ipp: 17V to 21.7V range
• Current - Peak Pulse (10/1000µs): 24.6A minimum
• Power - Peak Pulse: 400W minimum
• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount
• Type: Zener, Bidirectional, Single Channel
• Applications: General Purpose

Substitutes are grouped into two categories: direct electrical equivalents with matching clamping voltage specifications, and manufacturer-recommended alternatives with enhanced performance characteristics (higher peak pulse current or power dissipation). All substitute parts maintain the same reverse standoff voltage, package form factor, and general-purpose application profile as the original component.

Parameter Comparison

Engineering Selection Recommendations

Direct Electrical Equivalents (Preferred for Drop-In Replacement)

SMAJ10CA (MDD), SMAJ10CA-13-F (Diodes Incorporated), SMAJ10CA-TP (Micro Commercial Co), and TV04A100JB-G (Comchip Technology) provide direct electrical equivalence with clamping voltages of 17V and peak pulse currents of 24.6A, matching the original SMAJ10C specifications. All are active products with ROHS3 compliance. SMAJ10CA-13-F and SMAJ10CA-TP offer extended operating temperature ranges (-55°C to 175°C) compared to the original component's -65°C to 150°C range.

Enhanced Performance Alternatives

SMAJ10CAE3/TR13 (Microchip Technology) and SMAJ10CE3/TR13 (Microchip Technology) provide increased power dissipation (500W vs. 400W) and higher peak pulse currents (29.4A and 26.6A respectively), with clamping voltages of 17V and 18.8V. These components maintain the original operating temperature range of -65°C to 150°C and are suitable for applications requiring additional margin.

SMA6J10CA-TP (Micro Commercial Co) and SMAJ10CA-TR (STMicroelectronics) offer significantly enhanced current handling (35.3A and 106A respectively) with higher power dissipation (600W and 400W). These are appropriate for high-energy transient environments. SMAJ10CA-TR exhibits a higher clamping voltage of 21.7V.

All substitute parts maintain the DO-214AC (SMA) package form factor, surface mount mounting type, and general-purpose application classification of the original component.

Frequently Asked Questions (FAQ)

Q: Can SMAJ10CA be used as a direct replacement for SMAJ10C?

A: Yes. SMAJ10CA maintains the same 10V reverse standoff voltage, 17V clamping voltage, 24.6A peak pulse current, and DO-214AC package. The primary difference is product status (active vs. obsolete) and a slightly reduced lower operating temperature limit (-50°C vs. -65°C).

Q: What is the difference between SMAJ10CAE3/TR13 and SMAJ10CE3/TR13?

A: Both are Microchip Technology products with enhanced power dissipation (500W). SMAJ10CAE3/TR13 has a 17V clamping voltage and 29.4A peak pulse current, while SMAJ10CE3/TR13 has an 18.8V clamping voltage and 26.6A peak pulse current. Selection depends on the specific voltage clamping requirement of the application.

Q: Why does SMAJ10CA-TR have a significantly higher peak pulse current (106A)?

A: SMAJ10CA-TR (STMicroelectronics) is specified with an 8/20µs pulse waveform rather than the standard 10/1000µs waveform used for other parts. This different pulse profile results in higher peak current capability. Verify pulse waveform compatibility with your application before selection.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts are either ROHS3 compliant or REACH unaffected, meeting environmental regulatory requirements equivalent to or exceeding the original SMAJ10C specification.

Q: Can I use SMA6J10CA-TP or SMAJ10CA-TR for applications requiring the exact 17.85V clamping voltage of the original SMAJ10C?

A: No. SMA6J10CA-TP clamps at 17V and SMAJ10CA-TR clamps at 21.7V. For applications with strict clamping voltage requirements, use SMAJ10CA, SMAJ10CA-13-F, SMAJ10CA-TP, or TV04A100JB-G, which all clamp at 17V.

Q: What packaging options are available for these substitute parts?

A: Substitute parts are available in Bulk, Tape & Reel (TR), and Cut Tape (CT) & Digi-Reel® packaging formats. Verify packaging compatibility with your procurement and assembly processes.