CD214B-T5.0CALF Equivalent & Substitute Parts

Part Overview

The CD214B-T5.0CALF is a 5V Transient Voltage Suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface mount applications. This component features a 9.2V maximum clamping voltage, 65.2A peak pulse current capability, and 600W peak pulse power rating in a DO-214AA (SMB) package. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	CD214B-T5.0CALF
Manufacturer	Bourns Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Voltage - Reverse Standoff (Typ)	5V
Voltage - Breakdown (Min)	6.4V
Voltage - Clamping (Max) @ Ipp	9.2V
Current - Peak Pulse (10/1000µs)	65.2A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the CD214B-T5.0CALF is determined by strict electrical and mechanical parameter matching within the TVS diode category. The critical parameters that define substitutability are:

Voltage - Reverse Standoff: 5V (exact match required)
Voltage - Breakdown (Min): 6.4V (exact match required)
Voltage - Clamping (Max) @ Ipp: 9.2V (exact match required)
Package / Case: DO-214AA, SMB (exact match required)
Mounting Type: Surface Mount (exact match required)
Current - Peak Pulse (10/1000µs): 65.2A minimum (tolerance range acceptable)
Power - Peak Pulse: 600W minimum (tolerance range acceptable)

Substitute parts are grouped into three categories based on their relationship to the original specification:

Direct Substitutes: Parts with identical electrical specifications and active product status from alternative manufacturers.

Upgrade Substitutes: Parts with identical electrical specifications but enhanced features or extended temperature ranges, from manufacturers with active product lines.

Similar Substitutes: Parts with equivalent voltage and package specifications but higher current ratings or power dissipation capabilities, suitable for applications requiring enhanced performance margins.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package	Operating Temperature	Product Status
CD214B-T5.0CALF	Bourns Inc.	5V	6.4V	9.2V	65.2A	600W	DO-214AA, SMB	-55°C ~ 150°C	Obsolete
SMBJ5.0CA	MDD	5V	6.4V	9.2V	65.3A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active
SMBJ5.0CA-HR	Littelfuse Inc.	5V	6.4V	9.2V	65.3A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active
SMBJ5.0CA-HRA	Littelfuse Inc.	5V	6.4V	9.2V	65.3A	600W	DO-214AA, SMB	-65°C ~ 150°C	Active
SMBJ5.0CA-TP	Micro Commercial Co	5V	6.4V	9.2V	65.2A	600W	DO-214AA, SMB	-55°C ~ 175°C	Active
SMBJ5.0CA-TR	STMicroelectronics	5V	6.4V	9.2V	68A	600W	DO-214AA, SMB	-55°C ~ 150°C	Active
SMB8J5.0CA-M3/52	Vishay General Semiconductor - Diodes Division	5V	6.4V	9.2V	87A	800W	DO-214AA, SMB	-55°C ~ 150°C	Active
SMB8J5.0CA-M3/5B	Vishay General Semiconductor - Diodes Division	5V	6.4V	9.2V	87A	800W	DO-214AA, SMB	-55°C ~ 150°C	Active

Engineering Selection Recommendations

For Direct Replacement: SMBJ5.0CA (MDD) provides the most direct electrical equivalent with active product status and extended lower temperature rating (-65°C minimum). This part maintains identical voltage specifications and current ratings within tolerance.

For Enhanced Reliability: SMBJ5.0CA-HR or SMBJ5.0CA-HRA (Littelfuse Inc.) offer active product status with extended temperature range and established supply chain availability. These parts are suitable for applications requiring long-term component support.

For Extended Temperature Range: SMBJ5.0CA-TP (Micro Commercial Co) extends the upper operating temperature to 175°C while maintaining the original current and power specifications, applicable to high-temperature environments.

For Performance Margin: SMB8J5.0CA-M3/52 or SMB8J5.0CA-M3/5B (Vishay General Semiconductor - Diodes Division) provide higher current handling (87A) and power dissipation (800W) while maintaining identical voltage characteristics. These are suitable for applications requiring additional transient protection margin.

All substitute parts maintain ROHS3 compliance and DO-214AA (SMB) package compatibility with the original CD214B-T5.0CALF design.

Frequently Asked Questions (FAQ)

Q: Can SMBJ5.0CA directly replace CD214B-T5.0CALF in existing designs?

A: Yes. SMBJ5.0CA maintains identical voltage specifications (5V standoff, 6.4V breakdown, 9.2V clamping) and current rating (65.3A), with the same DO-214AA (SMB) package footprint. The part is pin-compatible and electrically equivalent.

Q: What is the difference between direct substitutes and similar substitutes?

A: Direct substitutes (SMBJ5.0CA, SMBJ5.0CA-HR, SMBJ5.0CA-HRA, SMBJ5.0CA-TP) match the original 65.2A current and 600W power specifications. Similar substitutes (SMB8J5.0CA-M3/52, SMB8J5.0CA-M3/5B) provide higher current (87A) and power (800W) ratings while maintaining identical voltage characteristics. Similar substitutes are suitable for applications requiring enhanced transient protection capability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the environmental certification of the original CD214B-T5.0CALF.

Q: Does the operating temperature range affect substitutability?

A: Operating temperature range does not prevent substitution but should be verified against application requirements. SMBJ5.0CA and Littelfuse variants extend the lower temperature limit to -65°C. SMBJ5.0CA-TP extends the upper limit to 175°C. Selection depends on the specific thermal environment of the application.

Q: Can SMB8J5.0CA variants be used in place of the original part?

A: Yes. SMB8J5.0CA variants maintain identical voltage specifications and package form factor. The higher current (87A) and power (800W) ratings provide additional protection margin and are backward-compatible with designs specified for 65.2A operation.

Q: What packaging options are available for these substitutes?

A: All substitute parts are available in DO-214AA (SMB) surface mount package. Packaging formats include Tape & Reel (TR), Cut Tape (CT), and Digi-Reel options depending on manufacturer and part number variant. Verify specific packaging availability with supplier documentation.

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