CD214B-T16ALF Equivalent & Substitute Parts

Part Overview

The CD214B-T16ALF is a 16V Transient Voltage Suppressor (TVS) diode manufactured by Bourns Inc., designed for general-purpose overvoltage protection in surface mount applications. This unidirectional Zener diode features a 26V maximum clamping voltage and 23.1A peak pulse current capability in a DO-214AA (SMB) package. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	16V
Voltage - Breakdown (Min)	17.8V
Voltage - Clamping (Max) @ Ipp	26V
Current - Peak Pulse (10/1000µs)	23.1A
Power - Peak Pulse	600W
Package / Case	DO-214AA, SMB
Mounting Type	Surface Mount
Operating Temperature Range	-55°C ~ 150°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the CD214B-T16ALF is determined by the following critical parameters:

Voltage - Reverse Standoff: Must be 16V (±0V tolerance for direct substitution)
Voltage - Clamping (Max) @ Ipp: Must be 26V (±0V tolerance for direct substitution)
Current - Peak Pulse (10/1000µs): Must be 23.1A (±0A tolerance for direct substitution)
Power - Peak Pulse: Must be 600W (±0W tolerance for direct substitution)
Package / Case: Must be DO-214AA or SMB compatible
Mounting Type: Must be Surface Mount

Substitute parts are classified into two categories:

Direct Substitutes maintain identical electrical specifications (16V standoff, 26V clamping, 23.1A peak pulse) and are pin-compatible with the original part.

Similar Substitutes share the same package and mounting type but differ in voltage or current ratings. These parts are suitable only when circuit design permits tolerance of different electrical characteristics.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse	Power - Peak Pulse	Package	Product Status	Operating Temperature	RoHS Status
CD214B-T16ALF	Bourns Inc.	16V	26V	23.1A	600W	DO-214AA, SMB	Obsolete	-55°C ~ 150°C	ROHS3 Compliant
SMBJ16A	EVVO Semi	16V	26V	23.1A	600W	DO-214AC, SMA	Active	-65°C ~ 150°C	ROHS3 Compliant
SMBJ16A-HR	Littelfuse Inc.	16V	26V	23.1A	600W	DO-214AA, SMB	Active	-65°C ~ 150°C	ROHS3 Compliant
SMBJ16A-HRA	Littelfuse Inc.	16V	26V	23.1A	600W	DO-214AA, SMB	Active	-65°C ~ 150°C	ROHS3 Compliant
SMBJ16A-TP	Micro Commercial Co	16V	26V	23.1A	600W	DO-214AA, SMB	Active	-55°C ~ 175°C	ROHS3 Compliant
SMBJ16A-TR	STMicroelectronics	16V	26V	23.1A	600W	DO-214AA, SMB	Active	-55°C ~ 150°C	ROHS3 Compliant
SMBJ15A	EVVO Semi	15V	24.4V	24.6A	600W	DO-214AC, SMA	Active	-65°C ~ 150°C	ROHS3 Compliant
SMBJ15A/54	Vishay General Semiconductor - Diodes Division	15V	24.4V	24.6A	600W	DO-214AA, SMB	Active	-55°C ~ 150°C	RoHS non-compliant
SMBJ17A/54	Vishay General Semiconductor - Diodes Division	17V	27.6V	21.7A	600W	DO-214AA, SMB	Active	-55°C ~ 150°C	RoHS non-compliant

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical Specifications)

The following parts are direct electrical equivalents with active product status and ROHS3 compliance:

SMBJ16A-HR (Littelfuse Inc.): Maintains DO-214AA package compatibility with extended temperature range (-65°C to 150°C). ROHS3 compliant with 1039 units in stock.
SMBJ16A-HRA (Littelfuse Inc.): Identical specifications to SMBJ16A-HR with 870 units in stock.
SMBJ16A-TP (Micro Commercial Co): Offers extended upper temperature limit to 175°C in DO-214AA package. ROHS3 compliant with 2387 units in stock.
SMBJ16A-TR (STMicroelectronics): Maintains original temperature range (-55°C to 150°C) in DO-214AA package. ROHS3 compliant with 1389 units in stock.

Package Consideration

SMBJ16A from EVVO Semi provides identical electrical specifications but uses DO-214AC (SMA) package instead of DO-214AA (SMB). This substitution requires PCB layout modification. 44100 units available.

Similar Substitutes (Different Voltage/Current Ratings)

SMBJ15A (EVVO Semi): 15V standoff, 24.4V clamping, 24.6A peak pulse. Suitable only when circuit design permits lower voltage protection threshold.
SMBJ15A/54 (Vishay): Equivalent to SMBJ15A in DO-214AA package. RoHS non-compliant status requires compliance verification.
SMBJ17A/54 (Vishay): 17V standoff, 27.6V clamping, 21.7A peak pulse. RoHS non-compliant status requires compliance verification.

Frequently Asked Questions (FAQ)

Q: Can SMBJ16A (SMA package) replace CD214B-T16ALF (SMB package)?

A: Electrically, yes. SMBJ16A maintains identical voltage and current specifications. However, SMA and SMB packages have different footprints. PCB layout modification is required. Verify footprint compatibility before selection.

Q: What is the difference between SMBJ16A-HR, SMBJ16A-HRA, and SMBJ16A-TP?

A: All three maintain identical electrical specifications (16V, 26V, 23.1A, 600W). SMBJ16A-TP extends the upper operating temperature to 175°C compared to 150°C for the Littelfuse variants. Select based on thermal requirements of your application.

Q: Are SMBJ15A and SMBJ17A suitable replacements?

A: These are similar substitutes only. SMBJ15A provides lower voltage protection (15V standoff vs. 16V), while SMBJ17A provides higher voltage protection (17V standoff vs. 16V). Use only if circuit design permits different protection thresholds. Verify compliance requirements, as Vishay variants are RoHS non-compliant.

Q: Why is CD214B-T16ALF obsolete?

A: The part is no longer manufactured by Bourns Inc. Multiple active alternatives from established manufacturers (Littelfuse, STMicroelectronics, Micro Commercial Co, EVVO Semi) provide identical or compatible specifications with better availability and compliance status.

Q: What compliance certifications should I verify?

A: Confirm ROHS3 compliance for your application. Direct substitutes SMBJ16A-HR, SMBJ16A-HRA, SMBJ16A-TP, and SMBJ16A-TR are all ROHS3 compliant. Similar substitutes SMBJ15A/54 and SMBJ17A/54 are RoHS non-compliant and require compliance review before use.

Q: Which substitute offers the best inventory availability?

A: SMBJ16A from EVVO Semi has the highest stock level at 44100 units. Among DO-214AA package variants, SMBJ16A-TP (Micro Commercial Co) offers 2387 units.

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