CD214A-B330LF Equivalent & Substitute Parts

Part Overview

The CD214A-B330LF is a Schottky rectifier diode manufactured by Bourns Inc., rated for 30 V DC reverse voltage and 3 A average rectified current in a DO-214AC (SMA) surface mount package. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The diode features fast recovery characteristics suitable for high-frequency switching applications and is RoHS3 compliant with unlimited moisture sensitivity level.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	30 V
Current - Average Rectified (Io)	3 A
Voltage - Forward (Vf) (Max) @ If	500 mV @ 3 A
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	500 µA @ 30 V
Mounting Type	Surface Mount
Package / Case	DO-214AC, SMA
Operating Temperature - Junction	-55°C ~ 125°C
Technology	Schottky
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the CD214A-B330LF is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 30 V minimum
Current - Average Rectified (Io): 3 A minimum
Mounting Type: Surface Mount
Package / Case: DO-214AC (SMA) compatible
Technology: Schottky

Allowable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: May vary within acceptable circuit design margins
Current - Reverse Leakage @ Vr: May vary
Operating Temperature - Junction: May exceed the original specification
Capacitance @ Vr, F: May vary or be unspecified

Substitute parts are grouped into two categories:

Category 1: Direct Electrical and Mechanical Equivalents (30 V, 3 A, DO-214AC) Parts that match all mandatory parameters with identical voltage and current ratings in the same package form factor.

Category 2: Higher Voltage Rating Alternatives (40 V, 3 A) Parts that exceed the voltage specification while maintaining current rating and package compatibility, suitable for applications requiring additional voltage margin.

Parts with reduced current ratings (1 A, 2 A) are not suitable substitutes for the 3 A requirement and are excluded from direct substitution consideration.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Package	Product Status	Operating Temp (Junction)
CD214A-B330LF	Bourns Inc.	30 V	3 A	500 mV @ 3 A	DO-214AC (SMA)	Obsolete	-55°C ~ 125°C
B330A-13-F	Diodes Incorporated	30 V	3 A	500 mV @ 3 A	DO-214AC (SMA)	Active	-55°C ~ 150°C
RSX301L-30TE25	Rohm Semiconductor	30 V	3 A	420 mV @ 3 A	DO-214AC (SMA)	Not For New Designs	150°C (Max)
SSA33L-E3/5AT	Vishay General Semiconductor - Diodes Division	30 V	3 A	450 mV @ 3 A	DO-214AC (SMA)	Active	-65°C ~ 150°C
SSA33L-E3/61T	Vishay General Semiconductor - Diodes Division	30 V	3 A	450 mV @ 3 A	DO-214AC (SMA)	Active	-65°C ~ 150°C
SSA33L-M3/5AT	Vishay General Semiconductor - Diodes Division	30 V	3 A	450 mV @ 3 A	DO-214AC (SMA)	Active	-65°C ~ 150°C
SSA33L-M3/61T	Vishay General Semiconductor - Diodes Division	30 V	3 A	450 mV @ 3 A	DO-214AC (SMA)	Active	-65°C ~ 150°C
CD214A-B340R	Bourns Inc.	40 V	3 A	500 mV @ 3 A	2-SMD, No Lead	Active	-55°C ~ 125°C

Engineering Selection Recommendations

Primary Substitutes (Active Status, Identical Electrical Specifications):

The B330A-13-F from Diodes Incorporated is the preferred direct substitute. It matches the CD214A-B330LF in voltage rating (30 V), current rating (3 A), forward voltage (500 mV @ 3 A), and package form factor (DO-214AC SMA). The part is currently active in production with extended operating temperature range (-55°C ~ 150°C) and carries AEC-Q101 automotive qualification. RoHS3 compliance is maintained.

Secondary Substitutes (Active Status, Equivalent Electrical Performance):

The Vishay SSA33L series parts (SSA33L-E3/5AT, SSA33L-E3/61T, SSA33L-M3/5AT, SSA33L-M3/61T) provide equivalent functionality with 30 V, 3 A ratings in DO-214AC packages. These parts feature lower forward voltage (450 mV @ 3 A) compared to the original specification, resulting in reduced power dissipation. Extended operating temperature range (-65°C ~ 150°C) is provided. Packaging variants differ (Tape & Reel options), allowing selection based on procurement requirements. All are RoHS3 compliant.

Alternative with Higher Voltage Rating:

The CD214A-B340R from Bourns Inc. provides 40 V reverse voltage rating while maintaining 3 A current capacity and 500 mV forward voltage. This part is active in production and suitable for applications requiring additional voltage margin. Package form differs (2-SMD, No Lead) and must be evaluated for PCB layout compatibility.

Not Recommended for New Designs:

The RSX301L-30TE25 from Rohm Semiconductor is classified as "Not For New Designs" and should not be selected for new product development despite matching electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can the CD214A-B330LF be replaced with a 40 V rated diode such as the CD214A-B340R?

A: Yes, the CD214A-B340R is electrically compatible. The higher voltage rating (40 V vs. 30 V) provides additional reverse voltage margin and does not degrade circuit performance. However, the package form differs (2-SMD vs. DO-214AC), requiring PCB layout verification before implementation.

Q: What is the difference between the various Vishay SSA33L part numbers (E3/5AT, E3/61T, M3/5AT, M3/61T)?

A: The electrical specifications are identical across all four variants. The differences are in packaging and tape configuration: E3 and M3 designations indicate different internal construction, while 5AT and 61T indicate different tape reel formats. Selection depends on procurement and assembly equipment compatibility.

Q: Is the B330A-13-F from Diodes Incorporated a direct replacement for the CD214A-B330LF?

A: Yes. The B330A-13-F matches all critical electrical parameters (30 V, 3 A, 500 mV forward voltage) and package form (DO-214AC SMA). The part is currently active in production with extended temperature range and automotive qualification, making it the preferred substitute.

Q: Why is the RSX301L-30TE25 listed but not recommended?

A: The RSX301L-30TE25 meets the electrical requirements (30 V, 3 A) but carries a "Not For New Designs" product status classification. This designation indicates the manufacturer is phasing out the part, making it unsuitable for new product development despite current availability.

Q: Can a 1 A or 2 A rated diode substitute for the 3 A CD214A-B330LF?

A: No. The STPS1L30A (1 A) and STPS2L30A (2 A) have reduced current ratings below the 3 A requirement and cannot be used as direct substitutes. Using an undersized diode will result in thermal stress and potential failure.

Q: What is the significance of the forward voltage difference between the original part (500 mV) and the Vishay alternatives (450 mV)?

A: The lower forward voltage in the Vishay parts (450 mV vs. 500 mV) results in reduced power dissipation during operation. This is a beneficial characteristic that improves efficiency. The difference is within normal design margins for Schottky diodes and does not affect circuit compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification, matching the environmental compliance status of the original CD214A-B330LF.

Q: What is the operating temperature range difference between the original part and substitutes?

A: The CD214A-B330LF operates from -55°C to 125°C. Most substitutes extend the upper limit to 150°C, providing improved thermal margin. The Vishay SSA33L series extends the lower limit to -65°C. These extended ranges do not negatively impact circuit performance and provide additional design flexibility.

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