SMBJ8.0CA-TP Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The SMBJ8.0CA-TP is a surface-mount transient voltage suppressor diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection applications. This bidirectional zener TVS diode operates with an 8V reverse standoff voltage and provides 13.6V maximum clamping voltage at peak pulse current. The component is housed in a DO-214AA (SMB) package and is actively produced with ROHS3 compliance. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for this critical protection component.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	8V
Voltage - Breakdown (Min)	8.89V
Voltage - Clamping (Max) @ Ipp	13.6V
Current - Peak Pulse (10/1000µs)	44.1A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 175°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SMBJ8.0CA-TP is determined by strict electrical and mechanical parameter matching within the TVS diode category. The following criteria establish direct substitutability:

Critical Matching Parameters:

Voltage - Reverse Standoff: 8V (±0V tolerance applied)
Voltage - Clamping (Max) @ Ipp: 13.6V
Current - Peak Pulse (10/1000µs): 44.1A to 44.2A range
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener
Applications: General Purpose

All identified substitute parts maintain these electrical specifications within the defined parameters. Operating temperature ranges vary among manufacturers but remain within acceptable industrial and extended temperature ranges. All substitute parts maintain ROHS3 compliance and MSL 1 rating.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package	Operating Temperature	Product Status
SMBJ8.0CA-TP	Micro Commercial Co	8V	13.6V	44.1A	600W	DO-214AA, SMB	-55°C ~ 175°C	Active
SMBJ8.0CA	MDD	8V	13.6V	44.2A	600W	DO-214AA, SMB	-50°C ~ 150°C	Active
SMBJ8.0CA-13-F	Diodes Incorporated	8V	13.6V	44.1A	600W	DO-214AA, SMB	-55°C ~ 150°C	Active
SMBJ8.0CA-E3/52	Vishay General Semiconductor - Diodes Division	8V	13.6V	44.1A	600W	DO-214AA, SMB	-55°C ~ 150°C	Active
SMBJ8V0CA	Taiwan Semiconductor Corporation	8V	13.6V	44.1A	600W	DO-214AA, SMB	-55°C ~ 150°C	Active

Engineering Selection Recommendations

All identified substitute parts maintain active product status and ROHS3 compliance, confirming ongoing manufacturer support and environmental regulatory adherence. Selection among equivalent parts should be based on:

Compliance & Certification: All parts carry identical ROHS3 compliance and REACH unaffected status, with MSL 1 rating supporting unlimited shelf life under standard storage conditions.

Electrical Performance: All substitutes deliver the specified 8V reverse standoff voltage, 13.6V clamping voltage, and 600W peak pulse power rating. Peak pulse current specifications range from 44.1A to 44.2A, representing negligible variance within TVS diode manufacturing tolerances.

Temperature Operating Range: The SMBJ8.0CA-TP supports -55°C to 175°C junction temperature. Substitute parts from MDD operate to 150°C maximum, while Diodes Incorporated, Vishay, and Taiwan Semiconductor Corporation variants extend to -55°C minimum. Application requirements determine whether the extended upper temperature range of the primary part is necessary.

Package & Mounting: All parts utilize identical DO-214AA (SMB) surface-mount packaging, ensuring PCB footprint and reflow process compatibility.

Frequently Asked Questions (FAQ)

Q: Can SMBJ8.0CA from MDD replace SMBJ8.0CA-TP in all applications?

A: The MDD variant maintains identical voltage specifications (8V standoff, 13.6V clamping) and peak pulse power (600W). The operating temperature range differs: MDD operates -50°C to 150°C versus -55°C to 175°C for the primary part. Substitution is valid for applications within the -50°C to 150°C range.

Q: What is the significance of the part number suffix variations (CA-TP, CA-13-F, CA-E3/52)?

A: Suffixes indicate manufacturer-specific packaging, tape configuration, or internal revision codes. All identified variants maintain identical electrical specifications and DO-214AA (SMB) package geometry, confirming mechanical and electrical interchangeability.

Q: Are all substitute parts suitable for high-temperature applications?

A: The SMBJ8.0CA-TP supports operation to 175°C junction temperature. Substitute parts from Diodes Incorporated, Vishay, and Taiwan Semiconductor Corporation operate to 150°C maximum. For applications requiring operation above 150°C, the primary part or equivalent high-temperature variants must be specified.

Q: Do substitute parts require different PCB footprints or reflow profiles?

A: All substitute parts utilize the DO-214AA (SMB) package with identical mechanical dimensions and lead configuration. PCB footprints and reflow soldering profiles remain unchanged across all identified equivalents.

Q: What inventory considerations apply when selecting substitute parts?

A: Current inventory levels vary: SMBJ8.0CA-TP (2,392 pcs), SMBJ8.0CA MDD (3,400 pcs), SMBJ8.0CA-13-F (4,078 pcs), SMBJ8.0CA-E3/52 (3,070 pcs), and SMBJ8V0CA (4,300 pcs). Substitute selection may be influenced by availability and procurement lead times.

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