CD214B-T58CALF Equivalent & Substitute Parts

Part Overview

The CD214B-T58CALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface mount applications. This bidirectional Zener diode operates with a 58V reverse standoff voltage and provides 93.6V clamping at peak pulse current. The component is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD214B-T58CALF
Manufacturer	Bourns Inc.
Category	Transient Voltage Suppressors (TVS)
Package / Case	DO-214AA, SMB
Type	Zener
Bidirectional Channels	1
Voltage - Reverse Standoff (Typ)	58V
Voltage - Breakdown (Min)	64.4V
Voltage - Clamping (Max) @ Ipp	93.6V
Current - Peak Pulse (10/1000µs)	6.4A
Power - Peak Pulse	600W
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the CD214B-T58CALF is determined by strict electrical and mechanical parameter matching within the TVS diode category. The critical parameters governing substitutability are:

Electrical Parameters:

Voltage - Reverse Standoff (Typ): 58V
Voltage - Clamping (Max) @ Ipp: 93.6V
Current - Peak Pulse (10/1000µs): 6.4A
Power - Peak Pulse: 600W

Mechanical Parameters:

Package / Case: DO-214AA (SMB)
Mounting Type: Surface Mount
Bidirectional Channels: 1

Compliance Parameters:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1

Substitute parts are classified into two categories:

Direct Equivalents: Parts with identical electrical specifications (58V standoff, 93.6V clamping, 6.4A peak pulse) and active product status.

Similar Alternatives: Parts with comparable but not identical electrical specifications that operate within acceptable tolerance ranges for the same application class, offering functional substitution with minor performance variations.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	Product Status	Operating Temperature	RoHS Status
CD214B-T58CALF	Bourns Inc.	58V	93.6V	6.4A	600W	DO-214AA, SMB	Obsolete	-55°C ~ 150°C	ROHS3 Compliant
SMBJ58CA	Good-Ark Semiconductor	58V	93.6V	6.4A	600W	DO-214AA, SMB	Active	-55°C ~ 150°C	ROHS3 Compliant
P6SMB58CA	Littelfuse Inc.	52.78V	79.8V	7.7A	600W	DO-214AA, SMB	Active	-55°C ~ 150°C	ROHS3 Compliant
P6SMB68CA-M3/52	Vishay General Semiconductor - Diodes Division	58.1V	92V	6.5A	600W	DO-214AA, SMB	Active	-65°C ~ 150°C	ROHS3 Compliant
P6SMB68CA-M3/5B	Vishay General Semiconductor - Diodes Division	58.1V	92V	6.5A	600W	DO-214AA, SMB	Active	-65°C ~ 150°C	ROHS3 Compliant
SMBJ51CA	MDD	51V	82.4V	7.3A	600W	DO-214AA, SMB	Active	-50°C ~ 150°C	ROHS3 Compliant
SMBJ51CA-HR	Littelfuse Inc.	51V	82.4V	7.3A	600W	DO-214AA, SMB	Active	-65°C ~ 150°C	ROHS3 Compliant
SMBJ51CA-HRA	Littelfuse Inc.	51V	82.4V	7.3A	600W	DO-214AA, SMB	Active	-65°C ~ 150°C	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: SMBJ58CA (Good-Ark Semiconductor)

The SMBJ58CA is the direct electrical equivalent of the CD214B-T58CALF, matching all critical parameters: 58V reverse standoff voltage, 93.6V clamping voltage, 6.4A peak pulse current, and 600W peak pulse power. This part maintains identical operating temperature range (-55°C ~ 150°C) and package configuration (DO-214AA, SMB). The SMBJ58CA holds active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring long-term availability and supply chain stability. Inventory availability of 21,927 units supports production requirements.

Secondary Recommendations: P6SMB68CA-M3/52 and P6SMB68CA-M3/5B (Vishay General Semiconductor)

These Vishay TransZorb® parts provide functional substitution with minor electrical variations. The reverse standoff voltage is 58.1V (0.1V higher than the original), clamping voltage is 92V (1.6V lower), and peak pulse current is 6.5A (0.1A higher). These deviations remain within acceptable tolerance ranges for general-purpose overvoltage protection applications. Both variants offer extended operating temperature range (-65°C ~ 150°C) compared to the original specification. ROHS3 compliance and active product status are confirmed.

Alternative Consideration: SMBJ51CA, SMBJ51CA-HR, SMBJ51CA-HRA

These 51V standoff voltage parts represent lower-voltage alternatives suitable only for applications where the 58V protection threshold is not critical. The 51V standoff, 82.4V clamping, and 7.3A peak pulse specifications differ materially from the original. These parts are appropriate only when circuit design permits operation at reduced voltage protection levels. Littelfuse variants (SMBJ51CA-HR, SMBJ51CA-HRA) offer extended temperature range (-65°C ~ 150°C).

Frequently Asked Questions (FAQ)

Q: Can SMBJ58CA be used as a direct replacement for CD214B-T58CALF?

A: Yes. The SMBJ58CA matches all electrical specifications (58V standoff, 93.6V clamping, 6.4A peak pulse, 600W power) and mechanical requirements (DO-214AA SMB package, surface mount). Both are bidirectional single-channel Zener TVS diodes with identical operating temperature range and ROHS3 compliance. The primary difference is product status: SMBJ58CA is active while CD214B-T58CALF is obsolete.

Q: What are the key differences between direct equivalents and similar alternatives?

A: Direct equivalents (SMBJ58CA) maintain identical electrical specifications across all critical parameters. Similar alternatives (Vishay P6SMB68CA variants) operate with comparable but not identical specifications—typically within 1-2% variation in voltage parameters and slightly higher peak pulse current. Similar alternatives are functionally suitable for the same application class but may exhibit minor performance differences in clamping behavior.

Q: Are the Littelfuse SMBJ51CA variants suitable replacements?

A: The SMBJ51CA series (51V standoff, 82.4V clamping) represents a lower voltage protection class. These parts are suitable only if circuit design permits operation at reduced overvoltage thresholds. The 7V difference in standoff voltage (51V vs. 58V) and 11.2V difference in clamping voltage (82.4V vs. 93.6V) constitute material electrical differences. Use only when application requirements explicitly allow lower protection levels.

Q: Do all substitute parts maintain the same package footprint?

A: Yes. All listed substitute parts use the DO-214AA (SMB) surface mount package, ensuring mechanical compatibility with existing PCB layouts. No redesign or rework is required for package accommodation.

Q: What compliance certifications are maintained across substitutes?

A: All substitute parts maintain ROHS3 compliance and MSL 1 (unlimited moisture sensitivity) ratings. These certifications ensure compatibility with modern manufacturing processes and long-term storage requirements equivalent to the original CD214B-T58CALF specification.

Q: Which substitute offers the best long-term supply availability?

A: The SMBJ58CA from Good-Ark Semiconductor offers the highest current inventory (21,927 units) and active product status, providing the strongest supply chain assurance for ongoing production and future procurement requirements.

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