SMBJ8.0C-E3/5B Transient Voltage Suppressor Diode - Equivalent & Substitute Parts

Part Overview

The SMBJ8.0C-E3/5B is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division in the DO-214AA (SMB) surface mount package. This component is designed for general-purpose transient voltage suppression applications with an 8V reverse standoff voltage and 15V maximum clamping voltage at peak pulse current.

The SMBJ8.0C-E3/5B is classified as obsolete. Equivalent and substitute parts are available from multiple manufacturers with active product status, offering identical or comparable electrical performance within the same package footprint.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	8	V
Voltage - Breakdown (Min)	8.89	V
Voltage - Clamping (Max) @ Ipp	15	V
Current - Peak Pulse (10/1000µs)	40	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	-
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitute parts for the SMBJ8.0C-E3/5B are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Voltage - Reverse Standoff (Typ): 8V
Voltage - Breakdown (Min): 8.89V
Package / Case: DO-214AA, SMB
Mounting Type: Surface Mount
Bidirectional Channels: 1
Type: Zener
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Variation Parameters:

Voltage - Clamping (Max) @ Ipp: 13.6V to 15V (within design tolerance)
Current - Peak Pulse (10/1000µs): 40A to 44.2A (within design tolerance)
Operating Temperature Range: -50°C to -65°C minimum; 150°C to 175°C maximum

Substitute parts maintain identical reverse standoff and breakdown voltages while operating within the same thermal and mechanical constraints. Clamping voltage and peak pulse current variations remain within acceptable engineering tolerances for general-purpose transient suppression applications.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Breakdown (V)	Voltage - Clamping (V)	Current - Peak Pulse (A)	Operating Temp (°C)	Product Status	Package
SMBJ8.0C-E3/5B	Vishay	8	8.89	15	40	-55 to 150	Obsolete	DO-214AA
SMBJ8.0CA-E3/5B	Vishay	8	8.89	13.6	44.1	-55 to 150	Active	DO-214AA
SMBJ8.0CE3/TR13	Microchip Technology	8	8.89	15	40	-65 to 150	Active	DO-214AA
SMBJ8.0CA	MDD	8	8.89	13.6	44.2	-50 to 150	Active	DO-214AA
SMBJ8.0CA-13-F	Diodes Incorporated	8	8.89	13.6	44.1	-55 to 150	Active	DO-214AA
SMBJ8.0CA-TP	Micro Commercial Co	8	8.89	13.6	44.1	-55 to 175	Active	DO-214AA
SMBJ8.0CAE3/TR13	Microchip Technology	8	8.89	13.6	44.1	-65 to 150	Active	DO-214AA
SMBJ8V0CA	Taiwan Semiconductor Corporation	8	8.89	13.6	44.1	-55 to 150	Active	DO-214AA

Engineering Selection Recommendations

All substitute parts listed maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original SMBJ8.0C-E3/5B specifications. All substitute parts are classified as active products with current manufacturing status.

Direct Electrical Match: SMBJ8.0CE3/TR13 (Microchip Technology) provides identical clamping voltage (15V) and peak pulse current (40A) specifications. This part extends the minimum operating temperature to -65°C, providing enhanced low-temperature performance.

Functionally Equivalent Alternatives: SMBJ8.0CA-E3/5B (Vishay), SMBJ8.0CA (MDD), SMBJ8.0CA-13-F (Diodes Incorporated), SMBJ8.0CA-TP (Micro Commercial Co), SMBJ8.0CAE3/TR13 (Microchip Technology), and SMBJ8V0CA (Taiwan Semiconductor Corporation) operate within allowable parameter tolerances with clamping voltages of 13.6V and peak pulse currents between 44.1A and 44.2A. These parts are suitable for applications where the lower clamping voltage and higher peak pulse current capability remain within circuit design margins.

SMBJ8.0CA-TP offers the widest operating temperature range (-55°C to 175°C), providing additional thermal headroom for high-temperature applications.

Frequently Asked Questions (FAQ)

Q: Can SMBJ8.0CA-E3/5B replace SMBJ8.0C-E3/5B directly?

A: Yes. Both parts share identical reverse standoff voltage (8V), breakdown voltage (8.89V), and operating temperature range (-55°C to 150°C). The SMBJ8.0CA-E3/5B has a lower clamping voltage (13.6V vs 15V) and higher peak pulse current (44.1A vs 40A), which remain within acceptable design tolerances for general-purpose transient suppression. SMBJ8.0CA-E3/5B is manufactured by Vishay with active product status.

Q: What is the difference between 15V clamping and 13.6V clamping variants?

A: Clamping voltage determines the maximum voltage the TVS diode allows across its terminals during a transient event. The 15V variant (SMBJ8.0C-E3/5B, SMBJ8.0CE3/TR13) provides higher voltage clamping. The 13.6V variant (SMBJ8.0CA series) provides lower voltage clamping with correspondingly higher peak pulse current capability. Selection depends on circuit protection requirements and transient energy levels.

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 SMBJ8.0C-E3/5B design.

Q: Which substitute offers the best low-temperature performance?

A: SMBJ8.0CE3/TR13 and SMBJ8.0CAE3/TR13 (both Microchip Technology) extend the minimum operating temperature to -65°C, compared to -55°C for most alternatives.

Q: Which substitute offers the best high-temperature performance?

A: SMBJ8.0CA-TP (Micro Commercial Co) supports operating temperatures up to 175°C, exceeding the original specification of 150°C.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating.

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