SMDJ58A Equivalent & Substitute Parts

Part Overview

The SMDJ58A is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection in surface-mount applications. The device features a 58V reverse standoff voltage with a 93.6V maximum clamping voltage and 32.1A peak pulse current capability in a DO-214AB (SMC) package. This part is currently active in production with extensive inventory availability. Equivalent and substitute parts are identified to support procurement flexibility, supply chain continuity, and design optimization across multiple manufacturers while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	58	V
Voltage - Breakdown (Min)	64.4	V
Voltage - Clamping (Max) @ Ipp	93.6	V
Current - Peak Pulse (10/1000µs)	32.1	A
Power - Peak Pulse	3000	W
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-65 to 150	°C
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitute parts for the SMDJ58A are qualified based on the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Voltage - Reverse Standoff (Typ): 58V
Voltage - Breakdown (Min): 64.4V
Voltage - Clamping (Max) @ Ipp: 93.6V
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Unidirectional Channels: 1
Type: Zener

Allowable Variation Parameters:

Current - Peak Pulse (10/1000µs): 16.1A to 32.1A (higher current ratings provide equivalent or superior performance)
Power - Peak Pulse: 1500W to 3000W (higher power ratings provide equivalent or superior performance)
Operating Temperature Range: -55°C to 175°C (wider ranges are acceptable; minimum must not exceed -65°C and maximum must not be below 150°C for full compatibility)

Substitute parts meeting these criteria are electrically and mechanically interchangeable with the SMDJ58A in general-purpose transient voltage suppression applications.

Parameter Comparison

Manufacturer	Part Number	Vwm (V)	Vb Min (V)	Vc Max (V)	Ipp (A)	Ppk (W)	Temp Range (°C)	Package	Status
Littelfuse Inc.	SMDJ58A	58	64.4	93.6	32.1	3000	-65 to 150	DO-214AB, SMC	Active
Diodes Incorporated	3.0SMCJ58A-13	58	64.4	93.6	32.1	3000	-55 to 175	DO-214AB, SMC	Active
Panjit International Inc.	3.0SMCJ58A_R1_00001	58	64.4	93.6	32	3000	-55 to 150	DO-214AB, SMC	Active
MDD	SMCJ58A	58	64.4	93.6	16.1	1500	-50 to 150	DO-214AB, SMC	Active
Micro Commercial Co	SMCJ58A-TP	58	64.4	93.6	16.1	1500	-55 to 175	DO-214AB, SMC	Active
Eaton - Electronics Division	SMDJE58A	58	64.4	93.6	32.1	3000	-55 to 150	DO-214AB, SMC	Active
Bourns Inc.	SMLJ58A	58	64.4	93.6	32	3000	-55 to 150	DO-214AB, SMC	Active

Engineering Selection Recommendations

All substitute parts listed are active products with ROHS3 compliance or equivalent RoHS certification status. Selection among equivalent parts should be based on the following criteria:

Full Electrical Equivalence (32.1A / 3000W Rating):

3.0SMCJ58A-13 (Diodes Incorporated): Matches all electrical parameters with extended temperature range (-55 to 175°C)
3.0SMCJ58A_R1_00001 (Panjit International Inc.): Matches all electrical parameters with 32A peak pulse current
SMDJE58A (Eaton - Electronics Division): Matches all electrical parameters; specified for telecom applications
SMLJ58A (Bourns Inc.): Matches all electrical parameters with 32A peak pulse current

Reduced Electrical Rating (16.1A / 1500W Rating):

SMCJ58A (MDD): Provides 50% of peak pulse current and power dissipation; suitable for lower-energy transient environments
SMCJ58A-TP (Micro Commercial Co): Provides 50% of peak pulse current and power dissipation with extended temperature range (-55 to 175°C)

Selection of reduced-rating parts requires confirmation that application transient energy levels do not exceed 1500W peak pulse power. Full-rating equivalents are recommended for applications with uncertain or high-energy transient profiles.

Frequently Asked Questions (FAQ)

Q: Can SMCJ58A (MDD) or SMCJ58A-TP (Micro Commercial Co) be used as direct replacements for SMDJ58A?

A: These parts are electrically compatible for voltage parameters but provide only 50% of the peak pulse current (16.1A vs. 32.1A) and peak pulse power (1500W vs. 3000W). They are suitable only for applications where transient energy is confirmed to remain within 1500W limits. For applications requiring full 3000W capability, use 3.0SMCJ58A-13, 3.0SMCJ58A_R1_00001, SMDJE58A, or SMLJ58A.

Q: Are all substitute parts in the same DO-214AB (SMC) package?

A: Yes. All listed substitute parts use the DO-214AB (SMC) surface-mount package, ensuring mechanical and PCB layout compatibility with the SMDJ58A.

Q: What is the temperature range consideration for substitute selection?

A: The SMDJ58A operates from -65°C to 150°C. Substitute parts with wider ranges (such as 3.0SMCJ58A-13 at -55 to 175°C) provide extended capability but are fully compatible. Parts with narrower ranges (such as SMCJ58A at -50 to 150°C) are acceptable if application temperature limits do not exceed -50°C minimum or fall below 150°C maximum.

Q: Which substitute offers the best inventory availability?

A: SMLJ58A (Bourns Inc.) has the highest inventory level at 109,880 pieces. SMCJ58A (MDD) has 105,173 pieces. Both are suitable for high-volume procurement.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts carry ROHS3 compliance or equivalent RoHS certification status, meeting environmental and regulatory requirements.

Q: Can I use SMDJE58A for general-purpose applications, or is it limited to telecom?

A: SMDJE58A is specified for telecom applications but meets all electrical parameters for general-purpose transient voltage suppression. It is suitable for any application within its electrical and temperature ratings.

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