SMF58A-M3-08 Equivalent & Substitute Parts

Part Overview

The SMF58A-M3-08 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the eSMP® series and is designed for general-purpose transient voltage suppression applications. The device features a 58V reverse standoff voltage with a 95V maximum clamping voltage at peak pulse current, delivering 200W peak pulse power dissipation. The part is Active in product status and ROHS3 compliant, making it suitable for modern electronic circuit protection requirements. Equivalent and substitute parts are identified to support design flexibility, inventory optimization, and supply chain continuity.

Substiute Parts

SMF58A-M3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 1146SMF58A-M3-08 Datasheet

Current PartRFQ

SMF58A-E3-08

Vishay General Semiconductor - Diodes DivisionIn Stock: 39915SMF58A-E3-08 Datasheet

DirectRFQ

SMF58A-TP

Micro Commercial CoIn Stock: 3429SMF58A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMF58A-M3-08 are identified based on electrical parameter equivalence and mechanical compatibility. The primary substitution criteria are:

Electrical Parameters (Critical for Substitution):

• Voltage - Reverse Standoff (Typ): 58V
• Voltage - Breakdown (Min): 64.4V
• Current - Peak Pulse (10/1000µs): 2.1A
• Power - Peak Pulse: 200W
• Type: Zener (Unidirectional)
• Applications: General Purpose

Mechanical Parameters (Required for Compatibility):

• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Series Classification: eSMP® or equivalent

Compliance Parameters (Mandatory for Modern Applications):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)
• REACH Status: REACH Unaffected

Substitute parts must maintain identical or functionally equivalent electrical performance within the specified operating temperature range (-65°C to 175°C) and preserve surface mount compatibility.

Parameter Comparison

Engineering Selection Recommendations

SMF58A-E3-08 (Direct Substitute - Vishay General Semiconductor)

The SMF58A-E3-08 is a direct electrical and mechanical equivalent to the SMF58A-M3-08. Both parts are manufactured by Vishay General Semiconductor within the eSMP® series, share identical package specifications (DO-219AB), and maintain equivalent electrical performance across all critical parameters. The SMF58A-E3-08 offers superior inventory availability (39,900 units) compared to the main part number. This substitute is recommended as the primary alternative for supply chain continuity without design modification.

SMF58A-TP (MFR Recommended - Micro Commercial Co)

The SMF58A-TP is a manufacturer-recommended substitute from Micro Commercial Co. This part maintains electrical equivalence in reverse standoff voltage (58V), breakdown voltage (64.4V), peak pulse current (2.1A), and power dissipation (200W). The clamping voltage specification differs slightly (93.6V versus 95V), remaining within acceptable transient suppression performance margins. The package differs from the main part (SOD-123F versus DO-219AB), requiring PCB layout and footprint modification. This substitute is suitable for applications where package size reduction is beneficial and circuit board redesign is feasible. All compliance certifications (ROHS3, REACH Unaffected, MSL 1) are maintained.

Both substitute parts are Active in product status and fully compliant with modern regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SMF58A-E3-08 be used as a direct replacement for SMF58A-M3-08 without PCB modification?

A: Yes. The SMF58A-E3-08 is electrically and mechanically equivalent. Both parts use the DO-219AB (SMF) package and share identical electrical specifications. No PCB layout changes are required.

Q: What is the primary difference between SMF58A-M3-08 and SMF58A-TP?

A: The primary difference is the package type. SMF58A-M3-08 uses DO-219AB (SMF), while SMF58A-TP uses SOD-123F (SOD-123FL). The clamping voltage also differs slightly (95V versus 93.6V). PCB footprint redesign is necessary to implement SMF58A-TP as a substitute.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. Both SMF58A-E3-08 and SMF58A-TP are ROHS3 compliant with MSL 1 (Unlimited) ratings and REACH Unaffected status, matching the compliance profile of the main part.

Q: Which substitute part offers better inventory availability?

A: SMF58A-E3-08 provides the highest inventory availability at 39,900 units, compared to 1,112 units for SMF58A-M3-08 and 3,395 units for SMF58A-TP.

Q: Can SMF58A-TP be used in high-frequency applications where capacitance is critical?

A: The SMF58A-TP capacitance specification is not provided in the available data. The main part specifies 144pF @ 1MHz. Capacitance verification is required if high-frequency performance is a design constraint.

Q: What is the operating temperature range for all substitute parts?

A: All parts operate across -65°C to 175°C. SMF58A-M3-08 and SMF58A-E3-08 specify this as junction temperature (TJ), while SMF58A-TP specifies ambient temperature (TA).