SMBJ7.0C Equivalent & Substitute Parts

Part Overview

The SMBJ7.0C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. This component features a 7V reverse standoff voltage, 12.6V maximum clamping voltage, and 50A peak pulse current capability in a DO-214AA (SMB) package. The product is currently obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMBJ7.0C
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Package / Case	DO-214AA, SMB
Voltage - Reverse Standoff (Typ)	7V
Voltage - Breakdown (Min)	7.37V
Voltage - Clamping (Max) @ Ipp	12.6V
Current - Peak Pulse (10/1000µs)	50A
Power - Peak Pulse	600W
Operating Temperature	-65°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SMBJ7.0C is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 7V
Voltage - Clamping (Max) @ Ipp: 12V to 12.6V range
Current - Peak Pulse (10/1000µs): 50A minimum
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB (surface mount)
Bidirectional Channels: 1
Applications: General Purpose

Substitute parts must maintain compatibility across these electrical and mechanical specifications. Parts with identical reverse standoff voltage, comparable clamping voltage within acceptable tolerance, and matching package form factor are considered direct equivalents. Variations in operating temperature range and manufacturer do not disqualify substitution when other parameters align.

Parameter Comparison

Parameter	SMBJ7.0C (Main)	SMBJ7.0CA (MDD)	SMBJ7.0CA-13-F (Diodes Inc.)	SMBJ7.0CA-E3/5B (Vishay)	SMBJ7.0CA-TP (MCC)	SMBJ7.0CE3/TR13 (Microchip)	SMBJ7V0CA (TSC)
Voltage - Reverse Standoff (Typ)	7V	7V	7V	7V	7V	7V	7V
Voltage - Breakdown (Min)	7.37V	7.78V	7.78V	7.78V	7.78V	7.78V	7.78V
Voltage - Clamping (Max) @ Ipp	12.6V	12V	12V	12V	12V	13.3V	12V
Current - Peak Pulse (10/1000µs)	50A	50A	50A	50A	50A	45.1A	50A
Power - Peak Pulse	600W	600W	600W	600W	600W	600W	600W
Operating Temperature	-65°C ~ 150°C	-50°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 175°C	-65°C ~ 150°C	-55°C ~ 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All substitute parts listed are active products with ROHS3 compliance and MSL 1 rating, providing long-term availability and regulatory compliance advantages over the obsolete SMBJ7.0C.

SMBJ7.0CA (MDD), SMBJ7.0CA-13-F (Diodes Incorporated), SMBJ7.0CA-E3/5B (Vishay), SMBJ7.0CA-TP (Micro Commercial Co), and SMBJ7V0CA (Taiwan Semiconductor Corporation) maintain the 7V reverse standoff voltage and 50A peak pulse current specification. These parts feature 12V clamping voltage, which is within acceptable tolerance of the original 12.6V specification.

SMBJ7.0CE3/TR13 (Microchip Technology) maintains the 7V reverse standoff voltage but features a 13.3V clamping voltage and 45.1A peak pulse current. This part is suitable for applications where slightly higher clamping voltage and marginally reduced peak pulse current are acceptable.

SMBJ7.0CA-TP offers the widest operating temperature range (-55°C ~ 175°C), providing enhanced thermal performance for demanding environments. SMBJ7.0CE3/TR13 matches the original operating temperature range (-65°C ~ 150°C).

Frequently Asked Questions (FAQ)

Q: Can SMBJ7.0CE3/TR13 be used as a direct replacement for SMBJ7.0C?

A: SMBJ7.0CE3/TR13 is functionally compatible but with parameter variations. The 13.3V clamping voltage is higher than the original 12.6V, and peak pulse current is 45.1A versus 50A. Selection depends on circuit requirements for clamping voltage tolerance and peak current handling.

Q: Are all substitute parts in the same DO-214AA package?

A: Yes. All listed substitute parts use the DO-214AA (SMB) surface-mount package, ensuring mechanical and footprint compatibility with the original SMBJ7.0C design.

Q: What is the significance of the 7V reverse standoff voltage across all parts?

A: The 7V reverse standoff voltage is the maximum voltage the TVS diode sustains without conducting. All substitute parts maintain this specification, ensuring they trigger protection at the same threshold as the original component.

Q: Does operating temperature range affect substitution suitability?

A: Operating temperature range affects suitability only if the application requires operation at the extreme limits. SMBJ7.0CA-TP supports -55°C ~ 175°C, while SMBJ7.0CE3/TR13 supports -65°C ~ 150°C, matching the original. Most general-purpose applications are unaffected by these variations.

Q: Why do clamping voltages vary between substitute parts?

A: Clamping voltage variation reflects manufacturing tolerances and design differences between manufacturers. The 12V to 13.3V range represents acceptable variation for 7V-class TVS diodes. Circuit design should accommodate this range within protection requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, meeting regulatory requirements for hazardous substance restrictions.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message