SMBJ20C-E3/5B Equivalent & Substitute Parts

Part Overview

The SMBJ20C-E3/5B is a transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, housed in a DO-214AA (SMB) surface mount package. This bidirectional Zener diode is designed for general-purpose transient voltage suppression applications with a 20V reverse standoff voltage and 35.8V maximum clamping voltage at peak pulse current.

The SMBJ20C-E3/5B is classified as obsolete. Equivalent and substitute parts are available from multiple manufacturers with active product status, offering improved availability and comparable or enhanced electrical performance while maintaining the same mechanical package and core functional parameters.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	20	V
Voltage - Breakdown (Min)	22.2	V
Voltage - Clamping (Max) @ Ipp	35.8	V
Current - Peak Pulse (10/1000µs)	16.8	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C (TJ)
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Type	Zener	—
Bidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the SMBJ20C-E3/5B are grouped based on strict electrical and mechanical compatibility criteria:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 20V (exact match required)
Voltage - Breakdown (Min): 22.2V (exact match required)
Package / Case: DO-214AA, SMB (exact match required)
Mounting Type: Surface Mount (exact match required)
Type: Zener, Bidirectional (exact match required)
Bidirectional Channels: 1 (exact match required)

Secondary Compatibility Parameters:

Voltage - Clamping (Max) @ Ipp: 32.4V to 35.8V (acceptable range)
Current - Peak Pulse (10/1000µs): 16.7A to 30.9A (acceptable range)
Power - Peak Pulse: 600W to 1000W (acceptable range)
Operating Temperature Range: -55°C to 175°C (acceptable range)
RoHS Status: ROHS3 Compliant (required)

Substitutes are classified into two categories:

Direct Substitutes (Clamping Voltage 32.4V): SMBJ20CA-E3/5B, SMBJ20CAE3/TR13, 1SMB20CA TR13 PBFREE, ATV06B200JB-HF, SMB10J20CA, SMB10J20CA R5G, SMB10J20CA-TP, SMB10J20CAH

Functional Equivalent (Clamping Voltage 35.8V): SMBJ20CE3/TR13

All substitute parts maintain the same 20V reverse standoff voltage, 22.2V minimum breakdown voltage, DO-214AA package, and surface mount configuration as the original part.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage - Clamping (Max) @ Ipp (V)	Current - Peak Pulse (A)	Power - Peak Pulse (W)	Operating Temp Range (°C)	Package
SMBJ20C-E3/5B	Vishay	Obsolete	35.8	16.8	600	-55 to 150	DO-214AA
SMBJ20CA-E3/5B	Vishay	Active	32.4	18.5	600	-55 to 150	DO-214AA
SMBJ20CA-HR	Littelfuse	Active	32.4	18.6	600	-65 to 150	DO-214AA
SMBJ20CAE3/TR13	Microchip	Active	32.4	18.5	600	-65 to 150	DO-214AA
SMBJ20CE3/TR13	Microchip	Active	35.8	16.7	600	-65 to 150	DO-214AA
1SMB20CA TR13 PBFREE	Central Semiconductor	Active	32.4	18.5	600	-65 to 150	DO-214AA
ATV06B200JB-HF	Comchip	Active	32.4	18.52	600	-55 to 150	DO-214AA
SMB10J20CA	Formosa Microsemi	Active	32.4	30.9	1000	-55 to 175	DO-214AA
SMB10J20CA R5G	Taiwan Semiconductor	Discontinued	32.4	30.9	1000	-55 to 175	DO-214AA
SMB10J20CA-TP	Micro Commercial Co	Active	32.4	30.86	1000	-55 to 150	DO-214AA
SMB10J20CAH	Taiwan Semiconductor	Active	32.4	30.9	1000	-55 to 175	DO-214AA

Engineering Selection Recommendations

For Direct Replacement (Clamping Voltage 32.4V):

SMBJ20CA-E3/5B (Vishay) is the primary direct substitute, offering active product status from the original manufacturer with identical packaging and thermal specifications. This part provides the most straightforward replacement path with no design changes required.

SMBJ20CAE3/TR13 (Microchip) and SMBJ20CE3/TR13 (Microchip) are active alternatives with extended lower operating temperature limit (-65°C vs. -55°C), suitable for applications requiring enhanced cold-temperature performance.

1SMB20CA TR13 PBFREE (Central Semiconductor) is manufacturer-recommended and actively stocked with high inventory availability.

ATV06B200JB-HF (Comchip) is AEC-Q101 qualified for automotive applications where grade certification is required.

For Enhanced Performance (Higher Peak Pulse Current and Power Rating):

SMB10J20CA (Formosa Microsemi), SMB10J20CA-TP (Micro Commercial Co), and SMB10J20CAH (Taiwan Semiconductor) offer 1000W peak pulse power rating and 30.9A peak pulse current, providing superior transient suppression capability. These parts are suitable for applications requiring higher energy absorption. Extended operating temperature range to 175°C is available with SMB10J20CA and SMB10J20CAH.

SMB10J20CAH includes AEC-Q101 automotive qualification for grade-sensitive applications.

Avoid:

SMB10J20CA R5G (Taiwan Semiconductor) is discontinued at DiGi Electronics and should not be selected for new designs despite active inventory status elsewhere.

Frequently Asked Questions (FAQ)

Q: Can SMBJ20CA-E3/5B directly replace SMBJ20C-E3/5B?

A: Yes. Both parts share identical reverse standoff voltage (20V), breakdown voltage (22.2V), package (DO-214AA), and mounting type (surface mount). The clamping voltage differs slightly (32.4V vs. 35.8V), but both remain within acceptable suppression performance for general-purpose applications. No circuit modifications are required.

Q: What is the difference between SMBJ20CA and SMB10J20CA?

A: The SMB10J20CA series provides higher peak pulse current (30.9A vs. 18.5A) and peak pulse power (1000W vs. 600W). Both maintain the same 20V reverse standoff voltage and DO-214AA package. SMB10J20CA is suitable for applications requiring greater transient energy absorption. The "10" designation indicates the higher power rating.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts are RoHS3 compliant. The original SMBJ20C-E3/5B is also RoHS3 compliant.

Q: Can I use ATV06B200JB-HF in non-automotive applications?

A: Yes. ATV06B200JB-HF is AEC-Q101 qualified for automotive use but functions identically to non-automotive equivalents in general-purpose applications. It offers the same electrical parameters and DO-214AA package.

Q: What is the significance of the temperature range difference (-55°C to 150°C vs. -65°C to 150°C)?

A: The extended lower temperature limit (-65°C) in parts like SMBJ20CA-HR and SMBJ20CAE3/TR13 provides operational capability in colder environments. For applications operating above -55°C, both ranges are functionally equivalent. Selection depends on specific application temperature requirements.

Q: Why do some parts list "Discontinued" status?

A: SMB10J20CA R5G is marked discontinued at DiGi Electronics but may remain available through other distributors. For new designs, select actively produced alternatives such as SMB10J20CA, SMB10J20CA-TP, or SMB10J20CAH to ensure long-term supply chain stability.

Q: Are packaging variants (Tape & Reel vs. Bulk) electrically equivalent?

A: Yes. Packaging format (Tape & Reel, Cut Tape, or Bulk) affects handling and assembly logistics but does not alter electrical performance. All parts in the same electrical series are functionally identical regardless of packaging format.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message