SMBJ30A-13 Equivalent & Substitute Parts

Part Overview

The SMBJ30A-13 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Diodes Incorporated in the DO-214AA (SMB) surface mount package. This component is designed for general-purpose transient voltage suppression applications with a 30V reverse standoff voltage and 48.4V maximum clamping voltage. The part is currently discontinued at DiGi Electronics, necessitating identification of equivalent alternatives that maintain electrical and mechanical compatibility for circuit protection applications.

Key Parameters

Parameter	Value	Unit
Reverse Standoff Voltage (Typ)	30V	V
Breakdown Voltage (Min)	33.3V	V
Clamping Voltage (Max) @ Ipp	48.4V	V
Peak Pulse Current (10/1000µs)	12.4A	A
Peak Pulse Power	600W	W
Package / Case	DO-214AA, SMB	—
Operating Temperature Range	-55°C to 150°C	°C (TJ)
Mounting Type	Surface Mount	—
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitution of the SMBJ30A-13 is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Matching Parameters:

Reverse standoff voltage: 30V
Breakdown voltage minimum: 33.3V
Clamping voltage maximum @ Ipp: 48.4V
Peak pulse current: 12.4A (±tolerance acceptable)
Peak pulse power: 600W
Package: DO-214AA (SMB)
Mounting type: Surface mount
Unidirectional configuration: 1 channel

Substitute parts are grouped into two categories:

Category A - Direct Electrical & Package Equivalents (SMB Package): Parts maintaining identical electrical specifications and SMB package form factor. These include SMBJ30A-13-F (Diodes Incorporated), SMBJ30A (MDD), SMBJ30A-TP (Micro Commercial Co), and SMBJ30A-TR (STMicroelectronics).

Category B - Electrical Equivalents with Package Variation: Parts meeting all electrical specifications but in alternative surface mount packages. PTVS30VP1UP,115 (Nexperia USA Inc.) provides equivalent electrical performance in SOD-128 package with automotive qualification.

Category C - Near-Equivalent with Parameter Variance: Parts with minor deviations in specified parameters. SACB30 (Littelfuse Inc.) maintains 30V standoff and 48.6V clamping but specifies 10A peak pulse current versus 12.4A. P6SMB30A (Eaton) operates at 25.6V standoff with 41.4V clamping and 14.7A peak current, representing a different voltage class.

Parameter Comparison

Part Number	Manufacturer	Standoff Voltage (V)	Breakdown Min (V)	Clamp Voltage Max (V)	Peak Pulse Current (A)	Peak Power (W)	Package	Temp Range (°C)	Product Status	RoHS Status
SMBJ30A-13	Diodes Incorporated	30	33.3	48.4	12.4	600	DO-214AA, SMB	-55 to 150	Discontinued	Non-compliant
SMBJ30A-13-F	Diodes Incorporated	30	33.3	48.4	12.4	600	DO-214AA, SMB	-55 to 150	Active	ROHS3 Compliant
SMBJ30A	MDD	30	33.3	48.4	12.4	600	DO-214AA, SMB	-55 to 150	Active	RoHS Compliant
SMBJ30A-TP	Micro Commercial Co	30	33.3	48.4	12.4	600	DO-214AA, SMB	-55 to 175	Active	ROHS3 Compliant
SMBJ30A-TR	STMicroelectronics	30	33.3	48.4	13	600	DO-214AA, SMB	-55 to 150	Active	ROHS3 Compliant
SACB30	Littelfuse Inc.	30	33.3	48.6	10	500	DO-214AA, SMB	-55 to 150	Active	ROHS3 Compliant
PTVS30VP1UP,115	Nexperia USA Inc.	30	33.3	48.4	12.4	600	SOD-128	-55 to 150	Active	ROHS3 Compliant
P6SMB30A	Eaton - Electronics Division	25.6	28.5	41.4	14.7	600	DO-214AA, SMB	-55 to 150	Active	Non-compliant

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

SMBJ30A-13-F (Diodes Incorporated) is the direct successor to the discontinued SMBJ30A-13, maintaining identical electrical specifications with active product status and ROHS3 compliance. This part is the preferred replacement for new designs and existing inventory replenishment.

SMBJ30A (MDD) provides full electrical equivalence with active status and RoHS compliance. High inventory availability (62,817 pcs) supports production requirements.

SMBJ30A-TR (STMicroelectronics) offers electrical equivalence with 13A peak pulse current (within acceptable tolerance of 12.4A specification) and active status with ROHS3 compliance.

SMBJ30A-TP (Micro Commercial Co) maintains full electrical equivalence with extended operating temperature range to 175°C and ROHS3 compliance, suitable for applications requiring elevated temperature performance.

Alternative Package Substitute:

PTVS30VP1UP,115 (Nexperia USA Inc.) provides identical electrical specifications in SOD-128 package with automotive-grade qualification (AEC-Q101). This part is suitable for applications where SOD-128 package footprint is acceptable and automotive-grade reliability is required.

Near-Equivalent Substitute:

SACB30 (Littelfuse Inc.) maintains 30V standoff voltage and 48.6V clamping voltage with reduced peak pulse current specification (10A versus 12.4A) and lower peak power rating (500W versus 600W). This part is suitable for applications where peak current requirements do not exceed 10A.

Not Recommended:

P6SMB30A (Eaton) operates in a different voltage class (25.6V standoff) and is not electrically equivalent to the SMBJ30A-13. This part is unsuitable for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can SMBJ30A-13-F be used as a direct replacement for SMBJ30A-13?

A: Yes. SMBJ30A-13-F is manufactured by the same supplier (Diodes Incorporated) with identical electrical specifications, package, and operating temperature range. The primary difference is active product status and ROHS3 compliance versus the discontinued non-compliant original part.

Q: What is the difference between SMBJ30A-TP and SMBJ30A-TR?

A: Both parts maintain identical electrical specifications and SMB package. SMBJ30A-TP (Micro Commercial Co) specifies operating temperature to 175°C, while SMBJ30A-TR (STMicroelectronics) specifies to 150°C. SMBJ30A-TP is preferred for applications requiring extended temperature performance.

Q: Is PTVS30VP1UP,115 compatible with existing PCB layouts designed for SMB package?

A: No. PTVS30VP1UP,115 uses SOD-128 package, which has different footprint and pin configuration than DO-214AA (SMB). PCB layout modification is required. This part is suitable only for new designs or boards with SOD-128 footprint availability.

Q: Can SACB30 be used where SMBJ30A-13 is specified?

A: SACB30 is suitable for applications where peak pulse current requirements do not exceed 10A. The part maintains equivalent standoff voltage (30V) and clamping voltage (48.6V) specifications. Circuit analysis is required to confirm peak current does not exceed 10A specification.

Q: Why is P6SMB30A not recommended as a substitute?

A: P6SMB30A operates in a different voltage class with 25.6V standoff voltage and 41.4V clamping voltage, compared to 30V standoff and 48.4V clamping for SMBJ30A-13. This voltage difference makes it unsuitable for direct substitution in circuits designed for 30V protection threshold.

Q: Are all substitute parts RoHS compliant?

A: SMBJ30A-13-F, SMBJ30A (MDD), SMBJ30A-TP, SMBJ30A-TR, SACB30, and PTVS30VP1UP,115 are ROHS3 compliant. P6SMB30A is non-compliant. Compliance requirements should be verified against application specifications.

Q: What inventory considerations apply to substitute selection?

A: SMBJ30A (MDD) offers highest inventory availability at 62,817 pcs. SMBJ30A-13-F provides 2,480 pcs. SMBJ30A-TP and SMBJ30A-TR each provide 5,100 and 2,000 pcs respectively. Inventory levels should be confirmed with suppliers for production planning.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message