SMBJ100 Equivalent & Substitute Parts

Part Overview

The SMBJ100 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection in surface-mount applications. The device features a 100V reverse standoff voltage with a 170.1V maximum clamping voltage and 3.7A peak pulse current capability in a DO-214AA (SMB) package. The original SMBJ100 is classified as obsolete; however, multiple active equivalent parts from alternative manufacturers provide direct functional replacement with identical or comparable electrical specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	100	V
Voltage - Breakdown (Min)	105.3	V
Voltage - Clamping (Max) @ Ipp	170.1	V
Current - Peak Pulse (10/1000µs)	3.7	A
Power - Peak Pulse	600	W
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-65 to 150	°C (TJ)
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the SMBJ100 is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 100V nominal
Voltage - Clamping (Max) @ Ipp: Maximum 170.1V (original specification)
Current - Peak Pulse (10/1000µs): 3.7A minimum
Power - Peak Pulse: 600W
Package / Case: DO-214AA or SMB (identical physical form factor)
Mounting Type: Surface Mount
RoHS Compliance: ROHS3 Compliant

Substitute parts must maintain the 100V reverse standoff voltage class and support the same peak pulse current and power dissipation. All listed substitutes are housed in the DO-214AA (SMB) package and are RoHS3 compliant. Clamping voltage variations within the specified range do not preclude substitution, as the primary function is transient suppression at the specified voltage threshold.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vwm (Typ) V	Vbr (Min) V	Vc (Max) @ Ipp V	Ipp A	Ppp W	Tj (°C)	Package
SMBJ100	Littelfuse Inc.	Obsolete	100	105.3	170.1	3.7	600	-65 to 150	DO-214AA
SMBJ100A	MDD	Active	100	111	162	3.7	600	-50 to 150	DO-214AA
SMBJ100A-13-F	Diodes Incorporated	Active	100	111	162	3.7	600	-55 to 150	DO-214AA
SMBJ100A-E3/52	Vishay General Semiconductor	Active	100	111	162	3.7	600	-55 to 150	DO-214AA
SMBJ100A-E3/5B	Vishay General Semiconductor	Active	100	111	162	3.7	600	-55 to 150	DO-214AA
SMBJ100A-TP	Micro Commercial Co	Active	100	111	162	3.7	600	-55 to 175	DO-214AA
P6SMB130A	Eaton - Electronics Division	Active	111	124	179	3.4	600	-55 to 150	DO-214AA
TV06B101J-HF	Comchip Technology	Active	100	111	162	3.7	600	Not Specified	DO-214AA

Engineering Selection Recommendations

Primary Substitutes (Recommended)

SMBJ100A (MDD), SMBJ100A-13-F (Diodes Incorporated), SMBJ100A-E3/52 (Vishay), SMBJ100A-E3/5B (Vishay), and SMBJ100A-TP (Micro Commercial Co) are direct functional equivalents. All maintain the 100V reverse standoff voltage, 3.7A peak pulse current, and 600W power dissipation. All are active products with ROHS3 compliance and MSL 1 rating. These parts are interchangeable in the SMBJ100 application without circuit modification.

Extended Temperature Range Option

SMBJ100A-TP (Micro Commercial Co) extends the upper operating temperature to 175°C, compared to 150°C for other substitutes. This option is suitable for applications requiring enhanced thermal performance.

Alternative Voltage Class

P6SMB130A (Eaton) operates at a 111V reverse standoff voltage with 179V clamping voltage. This part is not a direct substitute for the 100V SMBJ100 and is suitable only for applications where the higher voltage threshold is acceptable. Peak pulse current is 3.4A, slightly lower than the 3.7A specification.

Compliance Status

All recommended substitutes carry ROHS3 compliance and MSL 1 (unlimited moisture sensitivity). Vishay parts include REACH Unaffected status. All are available in active production status with established supply chains.

Frequently Asked Questions (FAQ)

Q: Can SMBJ100A parts from different manufacturers be used interchangeably?

A: Yes. SMBJ100A from MDD, Diodes Incorporated, Vishay, Micro Commercial Co, and Comchip Technology all meet the same electrical specifications (100V Vwm, 3.7A Ipp, 600W Ppp) and DO-214AA package requirements. They are functionally interchangeable.

Q: What is the difference between SMBJ100A and P6SMB130A?

A: P6SMB130A operates at a higher voltage class (111V Vwm vs. 100V) with higher clamping voltage (179V vs. 162V) and slightly lower peak pulse current (3.4A vs. 3.7A). It is not a direct substitute and should only be used if the higher voltage threshold is required by the application.

Q: Does the clamping voltage variation (162V vs. 170.1V) affect substitution?

A: No. The clamping voltage specification defines the maximum voltage at peak pulse current. Variations within the specified range do not affect the transient suppression function. The 100V reverse standoff voltage and 3.7A peak pulse current are the primary selection criteria.

Q: Are all substitutes available in the same packaging options?

A: All recommended substitutes are supplied in DO-214AA (SMB) surface-mount packages. Packaging options (Tape & Reel, Cut Tape, bulk) vary by manufacturer and distributor but do not affect electrical compatibility.

Q: What is the significance of MSL 1 rating?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture bake requirements. All listed substitutes carry this rating, ensuring consistent handling and storage procedures.

Q: Can SMBJ100A-TP be used in applications with standard -55°C to 150°C temperature requirements?

A: Yes. SMBJ100A-TP is rated to -55°C to 175°C and is fully compatible with applications requiring only -55°C to 150°C operation. The extended upper temperature rating provides additional margin without affecting performance in standard temperature ranges.

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