SMAJ130 Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SMAJ130 is a unidirectional transient voltage suppressor diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. The device features a 130V reverse standoff voltage rating with a 219.45V maximum clamping voltage at peak pulse current. The SMAJ130 is classified as obsolete, making identification of functionally equivalent active alternatives essential for new designs and production continuity.

Substiute Parts

SMAJ130

Littelfuse Inc.In Stock: 84250SMAJ130 Datasheet

Current PartRFQ

SMAJ130A

MeritekIn Stock: 10389SMAJ130A Datasheet

DirectRFQ

SMAJ130A

MeritekIn Stock: 10389SMAJ130A Datasheet

DirectRFQ

SMAJ130A-13-F

Diodes IncorporatedIn Stock: 17139SMAJ130A-13-F Datasheet

MFR RecommendedRFQ

SMAJ130A-TP

Micro Commercial CoIn Stock: 6146SMAJ130A-TP Datasheet

MFR RecommendedRFQ

SMAJ130AE3/TR13

Microchip TechnologyIn Stock: 1242SMAJ130AE3/TR13 Datasheet

MFR RecommendedRFQ

SMAJ130E3/TR13

Microchip TechnologyIn Stock: 1029SMAJ130E3/TR13 Datasheet

MFR RecommendedRFQ

TV04A131J-G

Comchip TechnologyIn Stock: 1149TV04A131J-G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMAJ130 is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): Must equal 130V
• Package / Case: Must be DO-214AC (SMA) surface mount
• Type: Must be Zener diode, unidirectional (1 channel)
• Voltage - Clamping (Max) @ Ipp: Acceptable range 209V to 231V (within ±5.5% of original 219.45V specification)
• Current - Peak Pulse (10/1000µs): Acceptable range 1.9A to 2.4A (within ±26% of original specification)
• Power - Peak Pulse: Minimum 400W
• RoHS Status: ROHS3 Compliant required
• Moisture Sensitivity Level (MSL): Level 1 (Unlimited)

Substitute parts must maintain compatibility with the original electrical performance envelope while meeting current regulatory and compliance standards. All identified substitutes are active products with confirmed inventory availability.

Parameter Comparison

Engineering Selection Recommendations

All identified substitute parts are active products with ROHS3 compliance and MSL Level 1 rating, ensuring regulatory alignment and manufacturing continuity.

Primary Substitutes (Closest Electrical Match):

• SMAJ130A (Meritek) and TV04A131J-G (Comchip Technology) provide the most direct electrical equivalence with 209V clamping voltage and 1.9A to 1.91A peak pulse current, matching the original performance envelope.
• SMAJ130A-13-F (Diodes Incorporated) and SMAJ130A-TP (Micro Commercial Co) offer identical electrical specifications with extended temperature range capability (-55°C to 175°C for SMAJ130A-TP), suitable for applications requiring higher thermal margins.

Enhanced Performance Alternatives:

• SMAJ130AE3/TR13 (Microchip Technology) provides increased peak pulse current (2.4A) and power dissipation (500W), offering design margin for transient protection in higher-stress applications while maintaining the 130V standoff voltage.
• SMAJ130E3/TR13 (Microchip Technology) features elevated clamping voltage (231V) with 2.2A peak pulse current and 500W power rating, suitable for applications where higher clamping voltage is acceptable within system design constraints.

All substitutes maintain DO-214AC (SMA) package compatibility and surface-mount configuration, ensuring PCB layout and assembly process continuity.

Frequently Asked Questions (FAQ)

Q: Can SMAJ130A directly replace SMAJ130 without circuit modification? A: Yes. SMAJ130A maintains the 130V reverse standoff voltage and DO-214AC package, with clamping voltage (209V) within the acceptable substitution range. No circuit modification is required for standard general-purpose overvoltage protection applications.

Q: What is the difference between SMAJ130AE3/TR13 and SMAJ130E3/TR13? A: Both are Microchip Technology products with identical 130V standoff voltage and DO-214AC packaging. SMAJ130AE3/TR13 specifies 2.4A peak pulse current and 500W power dissipation with -65°C to 150°C operating range. SMAJ130E3/TR13 specifies 2.2A peak pulse current, 500W power dissipation, and 231V clamping voltage. Selection depends on whether peak current capacity or clamping voltage specification is the design constraint.

Q: Is the extended temperature range of SMAJ130A-TP (-55°C to 175°C) compatible with the original SMAJ130 design? A: Yes. The extended upper temperature limit (175°C vs. 150°C) provides additional thermal margin and is backward-compatible with designs specified for the original -65°C to 150°C range. The lower temperature limit (-55°C vs. -65°C) is less stringent and acceptable for most applications.

Q: Why do some substitutes have higher peak pulse current ratings? A: SMAJ130AE3/TR13 and SMAJ130E3/TR13 offer enhanced transient protection capability with 2.4A and 2.2A peak pulse current respectively, compared to the original 1.9A specification. These higher ratings provide additional design margin for applications experiencing severe transient events. Selection should be based on actual circuit transient requirements.

Q: Are all substitute parts available in Tape & Reel (TR) packaging? A: Yes. All identified substitutes are supplied in Tape & Reel packaging suitable for automated assembly processes, maintaining production compatibility with the original SMAJ130 procurement specification.

Q: What compliance certifications apply to all substitute parts? A: All substitute parts are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating, meeting current regulatory requirements for electronics manufacturing and ensuring long-term storage compatibility without desiccant packaging requirements.