SMBJ24CA-13 Equivalent & Substitute Parts

Part Overview

The SMBJ24CA-13 is a bidirectional Zener transient voltage suppressor (TVS) diode in SMB (DO-214AA) surface mount package manufactured by Diodes Incorporated. This component is designed for general-purpose transient voltage suppression applications with a 24V reverse standoff voltage and 38.9V maximum clamping voltage. The SMBJ24CA-13 is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines that maintain electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Reverse Standoff Voltage (Typ)	24V
Breakdown Voltage (Min)	26.7V
Clamping Voltage (Max) @ Ipp	38.9V
Peak Pulse Current (10/1000µs)	15.4A
Peak Pulse Power	600W
Operating Temperature Range	-55°C ~ 150°C (TJ)
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Bidirectional Channels	1
Type	Zener

Substitute Part Grouping Explanation

Substitution of the SMBJ24CA-13 is determined by strict equivalence across the following electrical and mechanical parameters:

Reverse standoff voltage: 24V
Breakdown voltage minimum: 26.7V
Clamping voltage maximum: 38.9V
Peak pulse current rating: 15.4A (±0.1A tolerance acceptable)
Peak pulse power: 600W
Package: DO-214AA / SMB surface mount
Bidirectional channels: 1
Type: Zener TVS diode

Substitute parts must maintain identical electrical performance within these specifications. Packaging format (tape & reel, cut tape, or bulk) does not affect electrical equivalence but may affect procurement and assembly logistics. Product status (active vs. discontinued) and compliance certifications (RoHS, REACH) are secondary considerations that do not alter functional substitutability.

Parameter Comparison

Part Number	Manufacturer	Reverse Standoff (V)	Breakdown Min (V)	Clamp Max @ Ipp (V)	Peak Pulse Current (A)	Peak Pulse Power (W)	Temp Range (°C)	Package	Status
SMBJ24CA-13	Diodes Incorporated	24	26.7	38.9	15.4	600	-55 ~ 150	DO-214AA, SMB	Discontinued
SMBJ24CA-13-F	Diodes Incorporated	24	26.7	38.9	15.4	600	-55 ~ 150	DO-214AA, SMB	Active
SMBJ24CA	MDD	24	26.7	38.9	15.5	600	-50 ~ 150	DO-214AA, SMB	Active
SMBJ24CA-TP	Micro Commercial Co	24	26.7	38.9	15.4	600	-55 ~ 175	DO-214AA, SMB	Active
SMBJ24CA-TR	STMicroelectronics	24	26.7	38.9	16	600	-55 ~ 150	DO-214AA, SMB	Active

Engineering Selection Recommendations

All listed substitute parts maintain electrical equivalence to the SMBJ24CA-13 across the critical parameters of reverse standoff voltage, breakdown voltage, clamping voltage, and peak pulse power rating.

SMBJ24CA-13-F (Diodes Incorporated) is the direct manufacturer equivalent with identical electrical specifications and operating temperature range. This part is currently active and available in high volume, making it the primary replacement option.

SMBJ24CA-TP (Micro Commercial Co) provides identical electrical performance with an extended upper operating temperature limit of 175°C, offering additional thermal margin in applications approaching the original 150°C specification.

SMBJ24CA-TR (STMicroelectronics) delivers equivalent performance with a peak pulse current rating of 16A, providing 3.9% additional current margin over the original 15.4A specification while maintaining all other electrical parameters.

SMBJ24CA (MDD) meets electrical requirements with a peak pulse current of 15.5A and maintains the 600W power rating. The lower temperature minimum of -50°C (versus -55°C) may be a consideration in extreme cold environments.

All substitute parts are RoHS3 compliant and REACH unaffected, meeting modern regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SMBJ24CA-13-F be used as a direct replacement for SMBJ24CA-13?

A: Yes. SMBJ24CA-13-F is manufactured by Diodes Incorporated with identical electrical specifications, operating temperature range, and package format. The suffix change reflects packaging configuration (Digi-Reel format) rather than electrical differences.

Q: What is the significance of the peak pulse current variation (15.4A vs. 15.5A vs. 16A) among substitutes?

A: Peak pulse current ratings represent the maximum transient current the device can safely conduct during a 10/1000µs pulse. Variations within this range (15.4A to 16A) are within normal manufacturing tolerance and do not affect substitutability. Higher ratings provide additional design margin.

Q: Does operating temperature range affect substitutability?

A: Operating temperature range does not affect electrical substitutability if the application operates within the overlapping temperature window. The SMBJ24CA-13 operates -55°C to 150°C. All substitutes cover at least this range, with some offering extended limits. Selection should match application requirements.

Q: Are packaging formats (tape & reel, cut tape, bulk) electrically equivalent?

A: Yes. Packaging format designations (such as -TR for tape & reel, -TP for tape & reel variant, -13-F for Digi-Reel) indicate supply and handling method only. Electrical performance and component specifications remain identical regardless of packaging format.

Q: What is the difference between Diodes Incorporated and alternative manufacturer versions?

A: All manufacturers listed produce SMBJ24 series TVS diodes meeting the same electrical specifications. Differences are limited to manufacturing process, compliance certifications, and availability. Selection may be driven by supply chain, cost, or qualification requirements rather than electrical performance.

Q: Can I substitute a part with higher peak pulse power rating?

A: The 600W peak pulse power rating is a specification ceiling, not a requirement. Parts rated at 600W cannot be substituted with lower-rated devices. All listed substitutes maintain the 600W specification, ensuring adequate transient energy dissipation capacity.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message