SMBJ90C-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBJ90C-E3/52 is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, designed for general-purpose overvoltage protection in surface-mount applications. This part operates with a 90V reverse standoff voltage and provides 160V maximum clamping voltage at peak pulse current. The SMBJ90C-E3/52 is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement.

Key Parameters

Parameter	Value
Reverse Standoff Voltage (Typ)	90V
Breakdown Voltage (Min)	100V
Clamping Voltage (Max) @ Ipp	160V
Peak Pulse Current (10/1000µs)	3.8A
Peak Pulse Power	600W
Operating Temperature Range	-55°C ~ 150°C (TJ)
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the SMBJ90C-E3/52 is determined by the following critical parameters:

Reverse standoff voltage must remain 90V to maintain circuit protection thresholds. Breakdown voltage minimum of 100V is a fixed requirement. Package and mounting type (DO-214AA, SMB surface mount) must be identical for PCB compatibility. Operating temperature range, RoHS compliance, and moisture sensitivity level must meet or exceed the original specification.

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

Category A (160V Clamping): Parts with identical clamping voltage (160V) and peak pulse current (3.8A) provide direct electrical equivalence.

Category B (146V Clamping): Parts with reduced clamping voltage (146V) but increased peak pulse current (4.1A) offer functional substitution with different transient response characteristics.

Parameter Comparison

Parameter	SMBJ90C-E3/52	SMBJ90CA-E3/52	SMBJ90CE3/TR13	SMBJ90CA (MDD)
Manufacturer	Vishay	Vishay	Microchip	MDD
Product Status	Obsolete	Active	Active	Active
Reverse Standoff Voltage	90V	90V	90V	90V
Breakdown Voltage (Min)	100V	100V	100V	100V
Clamping Voltage (Max) @ Ipp	160V	146V	160V	146V
Peak Pulse Current	3.8A	4.1A	3.8A	4.1A
Peak Pulse Power	600W	600W	600W	600W
Operating Temperature Range	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 150°C	-50°C ~ 150°C
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

SMBJ90CE3/TR13 (Microchip) is the primary substitute for the SMBJ90C-E3/52. This part maintains identical electrical specifications (160V clamping, 3.8A peak pulse current) and is currently in active production status. The extended operating temperature range (-65°C to 150°C) provides additional thermal margin. All compliance certifications (ROHS3, REACH Unaffected, EAR99) are equivalent.

SMBJ90CA-E3/52 (Vishay) is a secondary substitute from the original manufacturer. While clamping voltage is reduced to 146V with increased peak pulse current (4.1A), this part maintains the same reverse standoff voltage and breakdown characteristics. Active product status ensures long-term availability.

SMBJ90CA (MDD) offers the same electrical performance as SMBJ90CA-E3/52 with equivalent compliance status. The operating temperature range (-50°C to 150°C) is narrower than the original specification but remains suitable for most general-purpose applications.

All substitute parts are ROHS3 compliant with MSL 1 rating, ensuring compatibility with standard manufacturing processes and storage requirements.

Frequently Asked Questions (FAQ)

Q: Can SMBJ90CA-E3/52 directly replace SMBJ90C-E3/52?

A: SMBJ90CA-E3/52 is electrically compatible with reduced clamping voltage (146V vs. 160V) and increased peak pulse current (4.1A vs. 3.8A). Both maintain 90V reverse standoff voltage and 100V minimum breakdown voltage. Package and mounting type are identical. Selection depends on whether the 14V reduction in clamping voltage is acceptable for the application circuit.

Q: What is the difference between SMBJ90CE3/TR13 and SMBJ90C-E3/52?

A: SMBJ90CE3/TR13 is manufactured by Microchip Technology and provides identical electrical performance (160V clamping, 3.8A peak pulse current). The primary difference is manufacturer and product status (active vs. obsolete). Operating temperature range extends to -65°C, providing additional low-temperature margin.

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

A: Yes. All listed substitute parts use DO-214AA (SMB) surface-mount package, ensuring PCB footprint compatibility without layout modifications.

Q: Do substitute parts meet the same compliance requirements?

A: All substitute parts are ROHS3 compliant, REACH unaffected, and classified as EAR99. Moisture sensitivity level is MSL 1 (unlimited) for all parts, matching the original specification.

Q: Which substitute offers the best long-term availability?

A: SMBJ90CA (MDD) has the highest inventory level (29,200 pcs) and active product status, providing the strongest long-term procurement assurance. SMBJ90CE3/TR13 (Microchip) offers electrical equivalence with active status and extended temperature range.

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