CD214B-T58ALF Equivalent & Substitute Parts

Part Overview

The CD214B-T58ALF is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface-mount applications. Specified with a 58V reverse standoff voltage, 93.6V maximum clamping voltage, and 6.4A peak pulse current, this component operates across the -55°C to 150°C temperature range in a DO-214AA (SMB) package. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for new designs and production continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	58	V
Voltage - Breakdown (Min)	64.4	V
Voltage - Clamping (Max) @ Ipp	93.6	V
Current - Peak Pulse (10/1000µs)	6.4	A
Power - Peak Pulse	600	W
Operating Temperature Range	-55 to 150	°C
Package / Case	DO-214AA, SMB	—
Type	Zener	—
Unidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the CD214B-T58ALF is determined by strict equivalence across the following electrical and mechanical parameters:

Primary Equivalence Criteria:

Voltage - Reverse Standoff (Typ): 58V
Voltage - Clamping (Max) @ Ipp: 93.6V
Current - Peak Pulse (10/1000µs): 6.4A (±tolerance)
Power - Peak Pulse: 600W
Package / Case: DO-214AA (SMB)
Type: Zener, Unidirectional

Direct Equivalents maintain all primary parameters within specified tolerances and are suitable for direct replacement without circuit redesign.

Similar Parts share the same package and general voltage class but exhibit variations in peak pulse current or clamping voltage. These parts are listed for reference where design margins permit deviation from original specifications.

Parameter Comparison

Manufacturer Part Number	Manufacturer	VWM (Typ) V	Vc (Max) @ Ipp V	Ipp A	Package	Product Status	Operating Temp °C
CD214B-T58ALF	Bourns Inc.	58	93.6	6.4	DO-214AA, SMB	Obsolete	-55 to 150
SMBJ58A	Meritek	58	93.6	6.41	DO-214AA (SMB)	Active	-55 to 150
SMBJ58A-TP	Micro Commercial Co	58	93.6	6.4	DO-214AA, SMB	Active	-55 to 175
SMBJ58A-TR	STMicroelectronics	58	93.6	6.7	DO-214AA, SMB	Active	-55 to 150
TV06B580J-G	Comchip Technology	58	93.6	6.41	DO-214AA, SMB	Active	—
TV06B580J-HF	Comchip Technology	58	93.6	6.41	DO-214AA, SMB	Active	—
SMBJ51A-HR	Littelfuse Inc.	51	82.4	7.3	DO-214AA, SMB	Active	-65 to 150
SZ1SMB51AT3G	Littelfuse Inc.	51	82.4	7.3	DO-214AA, SMB	Active	-65 to 150

Engineering Selection Recommendations

Direct Replacement (Preferred):

SMBJ58A (Meritek), SMBJ58A-TP (Micro Commercial Co), SMBJ58A-TR (STMicroelectronics), TV06B580J-G (Comchip Technology), and TV06B580J-HF (Comchip Technology) are direct electrical equivalents with matching 58V standoff voltage, 93.6V clamping voltage, and 600W peak pulse power rating. All are ROHS3 compliant, MSL 1 rated, and available in active production status. Selection among these options should be based on packaging format (Tape & Reel vs. Cut Tape), inventory availability, and lead time requirements. SMBJ58A-TP offers extended operating temperature range to 175°C, providing additional thermal margin in high-temperature applications.

Similar Parts (Lower Voltage Class):

SMBJ51A-HR (Littelfuse Inc.) and SZ1SMB51AT3G (Littelfuse Inc.) operate at 51V standoff voltage with 82.4V clamping voltage. These parts are suitable only where circuit design permits operation at reduced voltage ratings. Both are ROHS3 compliant and MSL 1 rated. SZ1SMB51AT3G carries AEC-Q101 automotive qualification and extended temperature range (-65°C to 150°C), making it appropriate for automotive applications with lower voltage protection requirements.

All recommended substitutes maintain DO-214AA (SMB) package compatibility, unidirectional Zener topology, and general-purpose application suitability. Compliance certifications (ROHS3, REACH status, ECCN EAR99, HTSUS 8541.10.0080) are consistent across all active alternatives.

Frequently Asked Questions (FAQ)

Q: Can SMBJ58A directly replace CD214B-T58ALF without circuit modification?

A: Yes. SMBJ58A maintains identical electrical specifications: 58V reverse standoff voltage, 93.6V clamping voltage, 6.41A peak pulse current, and 600W peak pulse power. Both are unidirectional Zener diodes in DO-214AA (SMB) package. No circuit redesign is required.

Q: What is the difference between SMBJ58A-TP and SMBJ58A-TR?

A: Both are direct electrical equivalents with 58V standoff and 93.6V clamping voltage. SMBJ58A-TP (Micro Commercial Co) operates to 175°C maximum junction temperature, while SMBJ58A-TR (STMicroelectronics) operates to 150°C. SMBJ58A-TP provides 25°C additional thermal headroom. Packaging differs: SMBJ58A-TP is supplied in Tape & Reel format; SMBJ58A-TR is supplied in Cut Tape & Digi-Reel format.

Q: Why are SMBJ51A-HR and SZ1SMB51AT3G listed as similar rather than direct substitutes?

A: These parts operate at 51V standoff voltage with 82.4V clamping voltage, compared to the 58V/93.6V specification of CD214B-T58ALF. They are suitable only where circuit design margins permit lower voltage protection thresholds. Use these parts only if system requirements allow reduced overvoltage suppression voltage.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed direct equivalents and similar parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the original CD214B-T58ALF.

Q: What packaging options are available for direct equivalents?

A: Direct equivalents are supplied in Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel formats. All maintain DO-214AA (SMB) physical package dimensions. Selection should be based on assembly equipment compatibility and procurement requirements.

Q: Can TV06B580J-G and TV06B580J-HF be used interchangeably?

A: Yes. Both Comchip Technology parts are electrically identical with 58V standoff, 93.6V clamping voltage, and 6.41A peak pulse current. Both are ROHS3 compliant and MSL 1 rated. Differentiation is based on packaging tape format and supplier availability.

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