CD214B-T90CALF Equivalent & Substitute Parts

Part Overview

The CD214B-T90CALF 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 90V reverse standoff voltage with 146V maximum clamping voltage and 4.1A peak pulse current capability in the DO-214AA (SMB) package format. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for design continuity and procurement planning.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	90	V
Voltage - Breakdown (Min)	100	V
Voltage - Clamping (Max) @ Ipp	146	V
Current - Peak Pulse (10/1000µs)	4.1	A
Power - Peak Pulse	600	W
Package / Case	DO-214AA, SMB	—
Operating Temperature	-55 to 150	°C (TJ)
Bidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the CD214B-T90CALF is determined by strict alignment of the following electrical and mechanical parameters:

Voltage - Reverse Standoff (Typ): 90V
Voltage - Breakdown (Min): 100V
Voltage - Clamping (Max) @ Ipp: 146V
Current - Peak Pulse (10/1000µs): 4.1A
Power - Peak Pulse: 600W
Package / Case: DO-214AA, SMB
Bidirectional Channels: 1

Substitute parts are categorized into two groups:

Direct Equivalents: Parts meeting all key electrical parameters (90V standoff, 146V clamp, 4.1A peak pulse) with identical package format. These provide pin-for-pin and functional compatibility.

Similar Alternatives: Parts with comparable but not identical electrical specifications within the same package family. These may be suitable depending on circuit margin requirements and are listed with their specific parameter deviations.

Parameter Comparison

Parameter	CD214B-T90CALF (Bourns)	SMBJ90CA (MDD)	TV06B900JB-HF (Comchip)	SMBJ85CA (Meritek)	SMBJ78CA-M3/5B (Vishay)	TPSMB91CA (Littelfuse)
Voltage - Reverse Standoff (Typ)	90V	90V	90V	85V	78V	77.8V
Voltage - Breakdown (Min)	100V	100V	100V	94.4V	86.7V	86.5V
Voltage - Clamping (Max) @ Ipp	146V	146V	146V	137V	126V	125V
Current - Peak Pulse (10/1000µs)	4.1A	4.1A	4.11A	4.38A	4.8A	4.9A
Power - Peak Pulse	600W	600W	600W	600W	600W	600W
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Operating Temperature	-55 to 150°C	-50 to 150°C	Not specified	-55 to 150°C	-55 to 150°C	-65 to 175°C
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (Recommended for Immediate Substitution):

SMBJ90CA (MDD) and TV06B900JB-HF (Comchip) are direct functional equivalents to the CD214B-T90CALF. Both maintain identical electrical specifications across all critical parameters: 90V reverse standoff, 100V minimum breakdown, 146V maximum clamping voltage, and 4.1A peak pulse current. Both are active products with ROHS3 compliance and unlimited moisture sensitivity rating. SMBJ90CA offers the highest inventory availability (29,200 pcs) and is supplied in Tape & Reel packaging. TV06B900JB-HF provides an alternative source with 1,137 pcs in stock.

Similar Alternatives (Conditional Substitution):

SMBJ85CA (Meritek), SMBJ78CA-M3/5B (Vishay), and TPSMB91CA (Littelfuse) are similar alternatives with lower voltage ratings. These parts operate at reduced standoff and clamping voltages and are suitable only when circuit design margins permit lower protection thresholds. All three maintain the same package format and power dissipation capability. TPSMB91CA includes automotive-grade qualification (AEC-Q101) and extended operating temperature range (-65 to 175°C), making it suitable for automotive applications where the lower voltage rating is acceptable.

All substitute candidates are active products with ROHS3 compliance and MSL 1 rating, ensuring regulatory and environmental compatibility with the original specification.

Frequently Asked Questions (FAQ)

Q: Can SMBJ90CA directly replace CD214B-T90CALF without circuit modification?

A: Yes. SMBJ90CA matches all critical electrical parameters: 90V reverse standoff, 146V clamping voltage, and 4.1A peak pulse current. The DO-214AA (SMB) package is identical. No circuit redesign is required.

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

A: Direct equivalents (SMBJ90CA, TV06B900JB-HF) maintain identical voltage ratings and clamping characteristics. Similar alternatives (SMBJ85CA, SMBJ78CA-M3/5B, TPSMB91CA) have lower standoff and clamping voltages. Similar alternatives are suitable only if your circuit design can tolerate reduced protection thresholds.

Q: Why is the CD214B-T90CALF marked as obsolete?

A: Obsolescence indicates the part is no longer manufactured by Bourns Inc. Active alternatives from other manufacturers provide equivalent functionality and are recommended for new designs and ongoing procurement.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the original part's environmental specification.

Q: Does package format differ among substitutes?

A: No. All substitute parts use the DO-214AA (SMB) package format, ensuring mechanical and thermal compatibility with existing PCB layouts and assembly processes.

Q: Which substitute offers the best inventory availability?

A: SMBJ90CA (MDD) provides the highest stock level at 29,200 pcs, followed by SMBJ85CA (Meritek) at 145,100 pcs. Both are suitable for high-volume procurement.

Q: Is TPSMB91CA suitable for automotive applications?

A: TPSMB91CA carries AEC-Q101 automotive qualification and operates across an extended temperature range (-65 to 175°C). However, its 77.8V standoff voltage is lower than the original specification. Use only if your automotive circuit design permits this voltage reduction.

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