CDBA220L-G Schottky Diode Equivalent & Substitute Parts

Part Overview

The CDBA220L-G is a Schottky rectifier diode manufactured by Comchip Technology, rated for 20V DC reverse voltage and 2A average rectified current in a surface mount DO-214AC (SMA) package. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility within the specified voltage, current, and thermal operating parameters while accommodating available packaging and product status options.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	20	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	380 mV @ 2 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	1 mA @ 20 V	mA
Mounting Type	Surface Mount	—
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction (Max)	125	°C
Technology	Schottky	—
Product Status	Obsolete	—

Substitute Part Grouping Explanation

Substitution of the CDBA220L-G is determined by strict adherence to the following electrical and mechanical criteria:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 20V
Current - Average Rectified (Io): Must equal or exceed 2A
Technology: Schottky rectifier diode
Mounting Type: Surface Mount
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)

Package Compatibility:

Direct package match: DO-214AC (SMA)
Acceptable alternative: DO-214AA (SMB) with mechanical layout verification

Substitute Categories:

Category 1: Direct Electrical & Package Match Parts maintaining 20V rating, 2A current, and DO-214AC packaging with active product status.

Category 2: Voltage-Elevated Substitutes Parts with higher voltage ratings (40V) and identical current/package specifications, suitable for applications where reverse voltage margin is beneficial.

Category 3: Package Variant Substitutes Parts with equivalent electrical ratings but alternative surface mount packages (DO-214AA/SMB), requiring mechanical footprint verification.

Parameter Comparison

Parameter	CDBA220L-G (Main)	B220A-13-F	CDBA240L-HF	SS22S-E3/61T
Manufacturer	Comchip Technology	Diodes Incorporated	Comchip Technology	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	20 V	20 V	40 V	20 V
Current - Average Rectified (Io)	2 A	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	380 mV @ 2 A	500 mV @ 2 A	400 mV @ 2 A	550 mV @ 2 A
Speed	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Current - Reverse Leakage @ Vr	1 mA @ 20 V	500 µA @ 20 V	1 mA @ 40 V	200 µA @ 20 V
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AA, SMB
Operating Temperature - Junction	125°C (Max)	-65°C ~ 150°C	-55°C ~ 100°C	-55°C ~ 150°C
Product Status	Obsolete	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

B220A-13-F (Diodes Incorporated)

This part provides direct electrical and package equivalence to the CDBA220L-G. Both devices maintain 20V reverse voltage rating, 2A current capacity, and DO-214AC (SMA) surface mount packaging. The B220A-13-F carries active product status and ROHS3 compliance, supporting long-term design continuity. Forward voltage specification of 500 mV @ 2A represents a 120 mV increase over the main part; this difference is within typical Schottky diode manufacturing tolerance ranges and does not preclude functional substitution. Operating temperature range extends to 150°C maximum junction temperature, exceeding the CDBA220L-G specification of 125°C. This part is recommended as the primary substitute for direct replacement applications.

CDBA240L-HF (Comchip Technology)

This part maintains the same manufacturer lineage as the main component and offers identical current and package specifications. The 40V reverse voltage rating provides increased voltage margin over the 20V requirement. Forward voltage of 400 mV @ 2A is lower than the main part specification, indicating improved efficiency characteristics. Active product status and ROHS3 compliance ensure procurement availability. The operating temperature range of -55°C to 100°C is narrower than the main part maximum of 125°C; applications requiring sustained high-temperature operation above 100°C should verify thermal compatibility. This part is suitable for applications where elevated voltage margin is beneficial or where Comchip Technology sourcing is preferred.

SS22S-E3/61T (Vishay General Semiconductor - Diodes Division)

This part maintains electrical equivalence in voltage and current ratings but uses DO-214AA (SMB) packaging instead of DO-214AC (SMA). The SMB package is physically larger than SMA, requiring verification of PCB footprint compatibility before substitution. Forward voltage specification of 550 mV @ 2A represents the highest among substitute options; thermal design should account for increased power dissipation in high-current applications. Active product status, ROHS3 compliance, and extended operating temperature range to 150°C support long-term availability. This part is applicable only where PCB layout accommodates SMB package dimensions.

Frequently Asked Questions (FAQ)

Q: Can CDBA240L-HF replace CDBA220L-G in all applications?

A: CDBA240L-HF maintains identical current (2A) and package (DO-214AC) specifications. The 40V reverse voltage rating exceeds the 20V requirement, providing additional voltage margin. However, the maximum operating temperature of 100°C is lower than the main part specification of 125°C. Substitution is valid for applications operating below 100°C junction temperature. Verify thermal design for applications approaching this limit.

Q: What is the significance of forward voltage differences among substitutes?

A: Forward voltage (Vf) determines power dissipation in the diode during conduction. The main part specifies 380 mV @ 2A, while substitutes range from 400 mV to 550 mV. Higher forward voltage increases heat generation proportionally to current. In high-current or continuous-duty applications, select substitutes with lower Vf specifications (CDBA240L-HF at 400 mV) to minimize thermal load. In low-current or intermittent applications, forward voltage differences are negligible.

Q: Is SS22S-E3/61T package compatibility verified?

A: SS22S-E3/61T uses DO-214AA (SMB) packaging, which is physically larger than the DO-214AC (SMA) package of the main part. Direct PCB footprint substitution is not possible without layout modification. Verify that the target PCB accommodates SMB pad spacing and clearance requirements before selecting this substitute. Consult PCB design documentation and package datasheets for dimensional specifications.

Q: What compliance certifications apply to substitute parts?

A: B220A-13-F, CDBA240L-HF, and SS22S-E3/61T all carry ROHS3 compliance certification. All parts are REACH Unaffected and classified under ECCN EAR99. These certifications support use in regulated applications and export-controlled environments. The main part (CDBA220L-G) compliance status is not specified; verify regulatory requirements for your specific application before finalizing substitute selection.

Q: Can reverse leakage current differences affect circuit performance?

A: Reverse leakage current specifications vary among substitutes: main part at 1 mA @ 20V, B220A-13-F at 500 µA @ 20V, CDBA240L-HF at 1 mA @ 40V, and SS22S-E3/61T at 200 µA @ 20V. In most rectification applications, these differences are negligible. In precision analog circuits or high-impedance applications, lower leakage current (B220A-13-F or SS22S-E3/61T) may provide performance advantages. Evaluate circuit sensitivity to leakage current before substitution.

Q: What is the impact of product status (Obsolete vs. Active) on long-term availability?

A: The main part CDBA220L-G is classified as obsolete, indicating discontinued production and limited future availability. All three substitute parts carry active product status, ensuring continued manufacturing and supply chain support. For new designs or long-term production requirements, select active-status substitutes to avoid future procurement disruption. Existing inventory of CDBA220L-G may support short-term needs, but active substitutes are recommended for designs requiring multi-year production support.

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