CD214B-T17CALF Equivalent & Substitute Parts

Part Overview

The CD214B-T17CALF is a transient voltage suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface mount applications. This component features a 17V reverse standoff voltage with a 27.6V maximum clamping voltage and 21.7A peak pulse current capability in the DO-214AA (SMB) package format. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for new designs or production continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	17	V
Voltage - Breakdown (Min)	18.9	V
Voltage - Clamping (Max) @ Ipp	27.6	V
Current - Peak Pulse (10/1000µs)	21.7	A
Power - Peak Pulse	600	W
Package / Case	DO-214AA, SMB	—
Mounting Type	Surface Mount	—
Operating Temperature	-55°C ~ 150°C	TJ
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the CD214B-T17CALF is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - Reverse Standoff: 17V nominal
Voltage - Clamping (Max) @ Ipp: 27.6V
Current - Peak Pulse (10/1000µs): ≥21.7A
Package / Case: DO-214AA (SMB)
Mounting Type: Surface Mount
Power - Peak Pulse: 600W
RoHS Compliance: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Direct Equivalents maintain all primary electrical specifications (17V standoff, 27.6V clamping, ≥21.7A peak pulse) with identical packaging and compliance certifications.

Similar Substitutes provide alternative voltage ratings (15V, 16V, or 18V standoff) with corresponding clamping voltage adjustments. These are suitable only when circuit design permits operation within the modified voltage parameters. All similar substitutes maintain the DO-214AA package format, 600W peak pulse power rating, and ROHS3 compliance.

Parameter Comparison

Part Number	Manufacturer	Standoff Voltage (V)	Breakdown Min (V)	Clamping Max (V)	Peak Pulse Current (A)	Package	Status	RoHS
CD214B-T17CALF	Bourns Inc.	17	18.9	27.6	21.7	DO-214AA (SMB)	Obsolete	ROHS3
SMBJ17CA	Meritek	17	18.9	27.6	21.74	DO-214AA (SMB)	Active	ROHS3
SMBJ17CA-TP	Micro Commercial Co	17	18.9	27.6	21.7	DO-214AA (SMB)	Active	ROHS3
TV06B170JB-HF	Comchip Technology	17	18.9	27.6	21.74	DO-214AA (SMB)	Active	ROHS3
SMBJ15CA	EVVO Semi	15	16.7	24.4	24.6	DO-214AA (SMB)	Active	ROHS3
SMBJ16CA	EVVO Semi	16	17.8	26	23.1	DO-214AA (SMB)	Active	ROHS3
SMBJ18CA	MDD	18	20	29.2	20.6	DO-214AA (SMB)	Active	ROHS3
TPSMB18CA	Littelfuse Inc.	15.3	17.1	25.5	24.2	DO-214AA (SMB)	Active	ROHS3

Engineering Selection Recommendations

Direct Equivalents (Recommended for Drop-In Replacement):

SMBJ17CA (Meritek), SMBJ17CA-TP (Micro Commercial Co), and TV06B170JB-HF (Comchip Technology) are direct electrical equivalents with identical 17V standoff voltage, 27.6V clamping voltage, and ≥21.7A peak pulse current specifications. All three maintain DO-214AA packaging, 600W peak pulse power rating, ROHS3 compliance, and MSL 1 moisture sensitivity rating. These parts are currently in active production status and provide seamless substitution for the obsolete CD214B-T17CALF.

Similar Substitutes (Application-Dependent Selection):

SMBJ15CA, SMBJ16CA, SMBJ18CA, and TPSMB18CA offer alternative voltage ratings suitable only when circuit design accommodates modified standoff and clamping voltage parameters. SMBJ15CA and SMBJ16CA provide lower voltage protection thresholds with increased peak pulse current capability (24.6A and 23.1A respectively). SMBJ18CA and TPSMB18CA provide higher voltage thresholds. All similar substitutes maintain DO-214AA packaging, 600W peak pulse power, ROHS3 compliance, and MSL 1 rating. Selection among similar substitutes requires circuit-level voltage tolerance analysis.

All listed substitutes comply with ROHS3 regulations and maintain unlimited moisture sensitivity classification (MSL 1), ensuring compatibility with standard surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can SMBJ17CA directly replace CD214B-T17CALF without circuit modification?

A: Yes. SMBJ17CA maintains identical electrical specifications (17V standoff, 27.6V clamping, 21.74A peak pulse) and DO-214AA packaging. No circuit modification is required for direct substitution.

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

A: Direct equivalents (SMBJ17CA, SMBJ17CA-TP, TV06B170JB-HF) maintain the exact 17V standoff voltage and 27.6V clamping voltage of the original part. Similar substitutes (SMBJ15CA, SMBJ16CA, SMBJ18CA, TPSMB18CA) feature different standoff voltages (15V, 16V, or 18V) with corresponding clamping voltage adjustments. Similar substitutes require circuit design verification to confirm voltage tolerance compatibility.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and carry MSL 1 (unlimited) moisture sensitivity rating, meeting standard surface mount assembly requirements.

Q: What packaging format do these TVS diodes use?

A: All parts listed use the DO-214AA (SMB) surface mount package format, ensuring mechanical and thermal compatibility with existing PCB layouts designed for the CD214B-T17CALF.

Q: Which substitute offers the highest peak pulse current capability?

A: SMBJ15CA and TPSMB18CA offer the highest peak pulse current ratings at 24.6A and 24.2A respectively, compared to the original 21.7A specification. These parts are suitable for applications requiring enhanced transient current handling within their respective voltage ratings.

Q: Is TPSMB18CA suitable for automotive applications?

A: TPSMB18CA carries automotive grade qualification (AEC-Q101) and is rated for -65°C to 175°C operating temperature, making it suitable for automotive transient voltage suppression applications. However, its 15.3V standoff voltage differs from the original 17V specification and requires circuit design verification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message