CSFB202-G Equivalent & Substitute Parts

Part Overview

The CSFB202-G is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 100V DC reverse voltage and 2A average rectified current in a DO-214AA (SMB) surface mount package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to component availability, supply chain considerations, or design flexibility within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	920 mV @ 2 A	mV
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	-
Package / Case	DO-214AA, SMB	-
Operating Temperature - Junction (Max)	150	°C
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the CSFB202-G are qualified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 100V minimum
Current - Average Rectified (Io): 2A minimum
Package / Case: DO-214AA or SMB equivalent
Mounting Type: Surface Mount
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
RoHS3 Compliance: Required

Acceptable Parameter Variations:

Forward Voltage (Vf) @ 2A: 920 mV ± tolerance (up to 940 mV acceptable)
Reverse Recovery Time (trr): 25 ns to 35 ns (faster recovery acceptable)
Reverse Leakage Current: 2 µA to 5 µA @ 100V (lower leakage acceptable)
Operating Temperature Range: Minimum -55°C to +150°C (extended ranges acceptable)

Non-Substitutable Parts:

MURS110T3G: Current rating 1A (below 2A requirement) - not suitable for direct substitution
S2B: Standard Recovery speed (>500ns) and higher forward voltage (1.15V @ 2A) - not suitable for fast recovery applications

Parameter Comparison

Parameter	CSFB202-G	ES2B-13-F	ESH2B-E3/5BT	MURS210T3G
Manufacturer	Comchip Technology	Diodes Incorporated	Vishay General Semiconductor	onsemi
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	2 A	2 A	2 A	2 A
Voltage - Forward (Vf) (Max) @ If	920 mV @ 2 A	920 mV @ 2 A	930 mV @ 2 A	940 mV @ 2 A
Reverse Recovery Time (trr)	35 ns	25 ns	35 ns	30 ns
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	2 µA @ 100 V	2 µA @ 100 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA
Package / Case	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB	DO-214AA, SMB
Operating Temperature - Junction	150°C (Max)	-55°C ~ 150°C	-55°C ~ 175°C	-60°C ~ 175°C
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Last Time Buy

Engineering Selection Recommendations

Recommended Substitutes (Full Compatibility):

ES2B-13-F (Diodes Incorporated): Meets all primary substitution criteria with identical voltage and current ratings. Forward voltage and reverse recovery time are within acceptable parameters. Operating temperature range extends to 150°C minimum. RoHS3 compliant. Active product status ensures continued availability. Inventory: 2163 pcs.

ESH2B-E3/5BT (Vishay General Semiconductor - Diodes Division): Meets all primary substitution criteria with identical voltage and current ratings. Forward voltage is 930 mV @ 2A (10 mV higher than CSFB202-G, within acceptable tolerance). Reverse leakage current is 2 µA (lower than CSFB202-G, acceptable). Operating temperature range extends to 175°C. RoHS3 compliant. Active product status. Inventory: 10300 pcs.

Conditional Substitute (Current Rating Limitation):

MURS210T3G (onsemi): Meets all primary substitution criteria with identical voltage and current ratings. Forward voltage is 940 mV @ 2A (within acceptable tolerance). Reverse recovery time is 30 ns (faster than CSFB202-G, acceptable). Operating temperature range extends to 175°C. RoHS3 compliant. Product status is Last Time Buy, indicating limited future availability. Inventory: 16820 pcs. Use only when ES2B-13-F or ESH2B-E3/5BT are unavailable.

Not Recommended for Direct Substitution:

MURS110T3G (onsemi): Current rating is 1A, below the 2A requirement of CSFB202-G. Not suitable for applications requiring 2A operation.

S2B (Diotec Semiconductor): Speed classification is Standard Recovery (>500ns), not Fast Recovery. Forward voltage is 1.15 V @ 2A, significantly higher than CSFB202-G (920 mV). Not suitable for fast recovery applications.

ES2B (YAGEO): Insufficient detailed electrical parameters provided for complete compatibility verification.

Frequently Asked Questions (FAQ)

Q: Can ES2B-13-F replace CSFB202-G in all applications?

A: Yes. ES2B-13-F meets all electrical and mechanical requirements. Forward voltage (920 mV @ 2A) is identical, reverse recovery time (25 ns) is faster than CSFB202-G (35 ns), and package compatibility (DO-214AA, SMB) is confirmed. Both are RoHS3 compliant with Active product status.

Q: What is the difference between ESH2B-E3/5BT and CSFB202-G?

A: Both parts are rated 100V, 2A with DO-214AA packaging. ESH2B-E3/5BT has slightly higher forward voltage (930 mV vs 920 mV @ 2A), lower reverse leakage (2 µA vs 5 µA @ 100V), and extended operating temperature range (-55°C to 175°C vs 150°C max). These differences are within acceptable substitution parameters.

Q: Why is MURS210T3G marked as Last Time Buy?

A: Last Time Buy status indicates the manufacturer has announced end-of-life for this product. While currently available (16820 pcs inventory), future procurement may be limited. ES2B-13-F or ESH2B-E3/5BT are recommended for new designs to ensure long-term supply continuity.

Q: Can MURS110T3G be used instead of CSFB202-G?

A: No. MURS110T3G is rated for 1A average rectified current, while CSFB202-G requires 2A. Using MURS110T3G in a 2A application will exceed its current rating and cause component failure.

Q: Are all substitute parts available in the same packaging?

A: Yes. All recommended substitutes (ES2B-13-F, ESH2B-E3/5BT, MURS210T3G) use DO-214AA or SMB package designation, which are mechanically and electrically equivalent for surface mount PCB assembly.

Q: What does RoHS3 compliance mean for these parts?

A: RoHS3 compliance indicates the parts meet Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. All recommended substitutes maintain RoHS3 compliance, ensuring regulatory compatibility.

Q: Is forward voltage difference between parts significant?

A: Forward voltage differences of 10-20 mV (920 mV to 940 mV @ 2A) are within normal manufacturing tolerance and do not affect circuit functionality in typical rectifier applications. Power dissipation impact is negligible (approximately 20 mW difference at 2A).

Q: What is reverse recovery time and why does it matter?

A: Reverse recovery time (trr) is the time required for a diode to stop conducting when reverse bias is applied. Faster recovery (25-30 ns) reduces switching losses and electromagnetic interference. CSFB202-G at 35 ns is acceptable; faster alternatives (ES2B-13-F at 25 ns, MURS210T3G at 30 ns) provide improved performance without compatibility issues.

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