SMAJ58A-TP Equivalent & Substitute Parts

Part Overview

The SMAJ58A-TP is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose transient voltage protection in surface-mount applications. The device features a 58V reverse standoff voltage with 93.6V maximum clamping voltage and 4.3A peak pulse current capability in a DO-214AC (SMA) package. This part is Active status and ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical characteristics, package compatibility, and operational parameters to ensure direct functional interchangeability in circuit designs.

Substiute Parts

SMAJ58A-TP

Micro Commercial CoIn Stock: 2260SMAJ58A-TP Datasheet

Current PartRFQ

SMAJ58A

MDDIn Stock: 56889SMAJ58A Datasheet

DirectRFQ

SMAJ58A

MDDIn Stock: 56889SMAJ58A Datasheet

DirectRFQ

SMAJ58A-13-F

Diodes IncorporatedIn Stock: 280951SMAJ58A-13-F Datasheet

DirectRFQ

SMAJ58A-E3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 62804SMAJ58A-E3/61 Datasheet

DirectRFQ

SZ1SMA58AT3G

LittelfuseIn Stock: 15212SZ1SMA58AT3G Datasheet

DirectRFQ

SM4T68AY

STMicroelectronicsIn Stock: 5349SM4T68AY Datasheet

SimilarRFQ

SMAJ58A-TR

STMicroelectronicsIn Stock: 25700SMAJ58A-TR Datasheet

SimilarRFQ

SMAJ58AE3/TR13

Microchip TechnologyIn Stock: 5890SMAJ58AE3/TR13 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMAJ58A-TP are classified into two categories based on electrical parameter alignment:

Direct Equivalents maintain identical electrical specifications across all critical parameters: 58V reverse standoff voltage, 64.4V minimum breakdown voltage, 93.6V maximum clamping voltage, and 4.3A peak pulse current. These parts are functionally interchangeable with the main part in all circuit applications. Direct equivalents include SMAJ58A (MDD), SMAJ58A-13-F (Diodes Incorporated), SMAJ58A-E3/61 (Vishay), SZ1SMA58AT3G (Littelfuse), and SMAJ58A-TR (STMicroelectronics).

Similar Parts share the same reverse standoff voltage (58V) and breakdown voltage (64.4V) but differ in clamping voltage or peak pulse current specifications. These parts require circuit-level evaluation to confirm suitability. Similar parts include SM4T68AY (STMicroelectronics) with 121V clamping voltage and 19A peak pulse current, and SMAJ58AE3/TR13 (Microchip Technology) with 5.3A peak pulse current and 500W power rating.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (No Circuit Redesign Required): SMAJ58A (MDD), SMAJ58A-13-F (Diodes Incorporated), SMAJ58A-E3/61 (Vishay), SZ1SMA58AT3G (Littelfuse), and SMAJ58A-TR (STMicroelectronics) are direct functional equivalents. All maintain identical electrical performance specifications and DO-214AC (SMA) package compatibility. All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating. Selection among these direct equivalents may be based on availability, packaging format (Tape & Reel vs. Cut Tape), and supply chain considerations.

Conditional Substitution (Circuit Evaluation Required): SM4T68AY (STMicroelectronics) features higher clamping voltage (121V vs. 93.6V) and significantly higher peak pulse current (19A vs. 4.3A). This part is suitable only in applications where the higher clamping voltage and current capability do not create circuit compatibility issues. SMAJ58AE3/TR13 (Microchip Technology) provides higher peak pulse current (5.3A vs. 4.3A) and power dissipation (500W vs. 400W), offering enhanced transient protection margin in the same voltage class.

All substitute parts listed are Active status products with ROHS3 compliance and REACH Unaffected designation, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SMAJ58A-TP be directly replaced with SMAJ58A from MDD? A: Yes. Both parts share identical electrical specifications: 58V reverse standoff, 64.4V breakdown, 93.6V clamping, and 4.3A peak pulse current. The primary difference is operating temperature range (SMAJ58A-TP: -55 to 175°C vs. SMAJ58A: -50 to 150°C). Direct substitution is valid for applications within the MDD part's temperature range.

Q: What is the difference between direct equivalents and similar parts? A: Direct equivalents (SMAJ58A variants from multiple manufacturers) maintain all electrical parameters identical to SMAJ58A-TP. Similar parts (SM4T68AY, SMAJ58AE3/TR13) differ in clamping voltage or peak pulse current and require circuit-level verification before substitution.

Q: Is SZ1SMA58AT3G suitable for automotive applications? A: SZ1SMA58AT3G carries AEC-Q101 automotive qualification and operates across -65 to 150°C temperature range. It is suitable for automotive-grade applications requiring this certification level.

Q: Can SM4T68AY replace SMAJ58A-TP in all circuits? A: No. SM4T68AY has higher clamping voltage (121V vs. 93.6V) and peak pulse current (19A vs. 4.3A). Substitution requires circuit analysis to confirm the higher clamping voltage does not exceed downstream component voltage ratings.

Q: Are all substitute parts available in the same DO-214AC (SMA) package? A: Yes. All listed substitute parts use DO-214AC (SMA) surface-mount package, ensuring mechanical and footprint compatibility with SMAJ58A-TP.

Q: What packaging formats are available for substitute parts? A: Substitute parts are available in Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® formats. Packaging selection depends on manufacturing process requirements and supply chain logistics.

Q: Do all substitute parts meet ROHS3 compliance? A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, meeting current environmental and regulatory standards.