SMBJ220 Equivalent & Substitute Parts

Part Overview

The SMBJ220 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. The device features a 220V reverse standoff voltage rating and 373.8V maximum clamping voltage in a surface-mount DO-214AA (SMB) package. The SMBJ220 is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage ratings, current handling, and thermal specifications while meeting modern compliance standards.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	220	V
Voltage - Breakdown (Min)	233.1	V
Voltage - Clamping (Max) @ Ipp	373.8	V
Current - Peak Pulse (10/1000µs)	1.7	A
Power - Peak Pulse	600	W
Operating Temperature Range	-65 to 150	°C
Package / Case	DO-214AA (SMB)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the SMBJ220 is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): Must equal 220V to maintain circuit protection threshold
Voltage - Clamping (Max) @ Ipp: Must not exceed 373.8V to ensure adequate transient suppression
Current - Peak Pulse (10/1000µs): Must meet or exceed 1.7A for equivalent energy dissipation
Power - Peak Pulse: Must equal 600W for thermal performance equivalence
Package / Case: Must be DO-214AA (SMB) for mechanical and thermal compatibility
Mounting Type: Must be Surface Mount for PCB assembly compatibility
RoHS Status: Must maintain ROHS3 compliance for regulatory alignment

All identified substitute parts meet these criteria within the specified electrical and mechanical tolerances.

Parameter Comparison

Parameter	SMBJ220 (Littelfuse)	SMBJ220A (Meritek)	SMBJ220A-TP (Micro Commercial Co)	TV06B221J-HF (Comchip Technology)
Voltage - Reverse Standoff (Typ)	220V	220V	220V	220V
Voltage - Breakdown (Min)	233.1V	246V	246V	246V
Voltage - Clamping (Max) @ Ipp	373.8V	356V	356V	356V
Current - Peak Pulse (10/1000µs)	1.7A	1.69A	1.7A	1.69A
Power - Peak Pulse	600W	600W	600W	600W
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	Not specified	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active

Engineering Selection Recommendations

SMBJ220A (Meritek) is suitable for applications where clamping voltage reduction from 373.8V to 356V is acceptable. This part is in active production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Inventory availability is high (38,269 pcs).

SMBJ220A-TP (Micro Commercial Co) is the manufacturer-recommended substitute, offering active product status with extended operating temperature range (-55°C to 175°C) compared to the original specification. Peak pulse current matches the original 1.7A specification. This part is available in bulk packaging with 1,149 pcs in stock.

TV06B221J-HF (Comchip Technology) is an alternative substitute with active product status, ROHS3 compliance, and unlimited MSL rating. This part is supplied in Tape & Reel packaging with 997 pcs in stock. Operating temperature range is not specified in available documentation.

All three substitute parts maintain the 220V reverse standoff voltage, 600W peak pulse power, and DO-214AA (SMB) package compatibility required for direct substitution.

Frequently Asked Questions (FAQ)

Q: Can SMBJ220A be used as a direct replacement for SMBJ220?

A: Yes. Both parts maintain identical 220V reverse standoff voltage, 600W peak pulse power, and DO-214AA (SMB) package specifications. The clamping voltage is reduced from 373.8V to 356V, which provides improved transient suppression performance. Peak pulse current is 1.69A versus 1.7A, a negligible difference within component tolerance.

Q: What is the difference between SMBJ220A and SMBJ220A-TP?

A: Both parts share the same electrical specifications (220V standoff, 356V clamping, 1.7A peak pulse). SMBJ220A-TP offers an extended operating temperature range (-55°C to 175°C) and is supplied by Micro Commercial Co in bulk packaging. SMBJ220A is supplied by Meritek. Selection depends on temperature requirements and packaging preferences.

Q: Is TV06B221J-HF compatible with the original SMBJ220 circuit design?

A: Yes. TV06B221J-HF maintains the required 220V reverse standoff voltage, 356V clamping voltage, and DO-214AA (SMB) package. It is supplied in Tape & Reel format. Operating temperature range is not specified; verify against application requirements if temperature extremes are critical.

Q: Are all substitute parts RoHS compliant?

A: SMBJ220A (Meritek) and TV06B221J-HF (Comchip Technology) are ROHS3 compliant. SMBJ220A-TP (Micro Commercial Co) compliance status is not specified in available documentation; confirm with the supplier if RoHS certification is required.

Q: What packaging options are available for these substitutes?

A: SMBJ220A (Meritek) is available in standard packaging. SMBJ220A-TP (Micro Commercial Co) is supplied in bulk packaging. TV06B221J-HF (Comchip Technology) is supplied in Tape & Reel (TR) format. Select based on assembly process requirements.

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