SMBJ7.5C-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ7.5C-E3/52 is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This bidirectional Zener diode is designed for general-purpose transient voltage suppression in surface-mount applications using the DO-214AA (SMB) package. The part is currently listed as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	SMBJ7.5C-E3/52
Manufacturer	Vishay General Semiconductor - Diodes Division
Category	Transient Voltage Suppressors (TVS)
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Voltage - Reverse Standoff (Typ)	7.5V
Voltage - Breakdown (Min)	8.33V
Voltage - Clamping (Max) @ Ipp	14.3V
Current - Peak Pulse (10/1000µs)	42A
Power - Peak Pulse	600W
Operating Temperature Range	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the SMBJ7.5C-E3/52 are qualified based on the following critical parameters that must remain consistent:

Voltage - Reverse Standoff (Typ): 7.5V
Voltage - Breakdown (Min): 8.33V
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories based on clamping voltage performance:

Group A (14.3V Clamping): Parts with identical clamping voltage to the original SMBJ7.5C-E3/52, maintaining the same transient suppression characteristics.

Group B (12.9V Clamping): Parts with lower clamping voltage, providing tighter voltage suppression. These parts feature higher peak pulse current ratings (46.5A–46.6A) compared to the original 42A specification.

Parameter Comparison

Part Number	Manufacturer	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Operating Temperature Range	Product Status	Packaging
SMBJ7.5C-E3/52	Vishay	14.3V	42A	-55°C ~ 150°C	Obsolete	DO-214AA
SMBJ7.5CA-E3/52	Vishay	12.9V	46.5A	-55°C ~ 150°C	Active	Tape & Reel (TR)
SMBJ7.5CE3/TR13	Microchip Technology	14.3V	42A	-65°C ~ 150°C	Active	Tape & Reel (TR)
SMBJ7.5CA	MDD	12.9V	46.6A	-50°C ~ 150°C	Active	DO-214AA, SMB
SMBJ7.5CA-13-F	Diodes Incorporated	12.9V	46.5A	-55°C ~ 150°C	Active	Tape & Reel (TR)
SMBJ7.5CA-TP	Micro Commercial Co	12.9V	46.5A	-55°C ~ 175°C	Active	Tape & Reel (TR)
SMBJ7.5CAE3/TR13	Microchip Technology	12.9V	46.5A	-65°C ~ 150°C	Active	Tape & Reel (TR)
SMBJ7V5CA	Taiwan Semiconductor Corporation	12.9V	46.5A	-55°C ~ 150°C	Active	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

For Direct Replacement (Identical Clamping Voltage):

SMBJ7.5CE3/TR13 (Microchip Technology) provides the closest functional match to the obsolete SMBJ7.5C-E3/52, maintaining the 14.3V clamping voltage and 42A peak pulse current. This part is active, ROHS3 compliant, and extends the operating temperature range to -65°C, offering improved low-temperature performance. Tape & Reel packaging is standard for production volumes.

For Enhanced Performance (Lower Clamping Voltage):

Parts in Group B (SMBJ7.5CA-E3/52, SMBJ7.5CA, SMBJ7.5CA-13-F, SMBJ7.5CA-TP, SMBJ7.5CAE3/TR13, SMBJ7V5CA) offer tighter voltage clamping at 12.9V with increased peak pulse current ratings. These substitutes are suitable when lower transient voltage suppression is required. All Group B parts are active, ROHS3 compliant, and MSL 1 rated.

Temperature Considerations:

SMBJ7.5CA-TP supports the widest operating range (-55°C ~ 175°C), suitable for high-temperature applications.
Microchip parts (SMBJ7.5CE3/TR13, SMBJ7.5CAE3/TR13) extend the lower temperature limit to -65°C.
MDD SMBJ7.5CA operates from -50°C, which may be limiting for extreme cold environments.

Packaging and Availability:

All substitute parts maintain DO-214AA (SMB) package compatibility. Tape & Reel packaging is available for most active substitutes, supporting automated assembly. Cut Tape & Digi-Reel packaging is available for SMBJ7V5CA.

Frequently Asked Questions (FAQ)

Q: Can I use a Group B part (12.9V clamping) as a direct replacement for the original SMBJ7.5C-E3/52 (14.3V clamping)?

A: Group B parts provide tighter voltage clamping and are functionally compatible within the same 7.5V reverse standoff specification. The lower clamping voltage offers enhanced transient suppression. Verify that your circuit design tolerates the reduced clamping voltage before substitution.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental compliance.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging is optimized for high-volume automated assembly. Cut Tape (CT) & Digi-Reel packaging is suitable for lower-volume or mixed-component orders. Both formats contain the same component in DO-214AA (SMB) package.

Q: Which substitute offers the best temperature range coverage?

A: SMBJ7.5CA-TP (Micro Commercial Co) supports -55°C ~ 175°C, the widest operating range. Microchip parts extend the lower limit to -65°C. Select based on your specific thermal environment requirements.

Q: Is the original SMBJ7.5C-E3/52 still available?

A: The SMBJ7.5C-E3/52 is listed as obsolete. Active substitutes from multiple manufacturers ensure continued design support and procurement availability.

Q: Do all parts use the same DO-214AA (SMB) package?

A: Yes. All parts in this substitution list use the DO-214AA (SMB) surface-mount package, ensuring PCB layout and footprint compatibility.

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