CEFA202-G Equivalent & Substitute Parts Reference

Part Overview

The CEFA202-G is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 100 V DC reverse voltage and 2 A average rectified current in a DO-214AC (SMA) surface mount package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production support. The diode features fast recovery characteristics with a reverse recovery time of 25 ns and forward voltage of 920 mV at 2 A, suitable for standard rectification applications requiring moderate current handling in compact form factors.

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)	25	ns
Current - Reverse Leakage @ Vr	5	µA @ 100 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction (Max)	150	°C
Technology	Standard	—

Substitute Part Grouping Explanation

Substitution of the CEFA202-G is determined by strict electrical and mechanical parameter matching within the following criteria:

Primary Substitution Parameters:

Voltage - DC Reverse (Vr) (Max): 100 V (exact match required)
Current - Average Rectified (Io): 2 A (exact match required)
Package / Case: DO-214AC, SMA (exact match required)
Mounting Type: Surface Mount (exact match required)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io) (exact match required)
Reverse Recovery Time (trr): 25 ns (exact match required)

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max) @ If: 920 mV @ 2 A (tolerance range: ±50 mV acceptable)
Current - Reverse Leakage @ Vr: 5 µA @ 100 V (tolerance range: ±5 µA acceptable)
Operating Temperature - Junction: 150°C minimum required

Substitute parts must meet all primary parameters exactly. Secondary parameters may vary within specified tolerances without affecting functional compatibility in standard rectification circuits.

Parameter Comparison

Parameter	CEFA202-G (Main)	ES2BA-13-F	BYG22B-E3/TR	BYG22B-E3/TR3	ES2B-LTP	MURA210T3G	S1B-E3/5AT
Manufacturer	Comchip Technology	Diodes Incorporated	Vishay General Semiconductor	Vishay General Semiconductor	Micro Commercial Co	onsemi	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	100 V	100 V	100 V	100 V	100 V	100 V	100 V
Current - Average Rectified (Io)	2 A	2 A	2 A	2 A	2 A	2 A	1 A
Voltage - Forward (Vf) (Max) @ If	920 mV @ 2 A	920 mV @ 2 A	1.1 V @ 2 A	1.1 V @ 2 A	950 mV @ 2 A	940 mV @ 2 A	1.1 V @ 1 A
Reverse Recovery Time (trr)	25 ns	25 ns	25 ns	25 ns	35 ns	30 ns	1.8 µs
Current - Reverse Leakage @ Vr	5 µA @ 100 V	5 µA @ 100 V	1 µA @ 100 V	1 µA @ 100 V	5 µA @ 100 V	2 µA @ 100 V	1 µA @ 100 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Fast Recovery ≤ 500ns, > 200mA	Standard Recovery >500ns, > 200mA
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Technology	Standard	Standard	Avalanche	Avalanche	Standard	Standard	Standard
Operating Temperature - Junction	150°C (Max)	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	-65°C ~ 175°C	-65°C ~ 175°C	-55°C ~ 150°C
Product Status	Obsolete	Active	Active	Active	Not For New Designs	Active	Active
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalents (100% Functional Replacement):

ES2BA-13-F (Diodes Incorporated) and MURA210T3G (onsemi) are the primary direct equivalents for CEFA202-G. Both parts match all critical electrical parameters: 100 V reverse voltage, 2 A average rectified current, 25 ns reverse recovery time, fast recovery speed classification, and DO-214AC SMA package. Both are classified as Active products with ROHS3 compliance, ensuring long-term availability and regulatory compliance for new designs.

Secondary Equivalents (Functional Replacement with Parameter Variations):

BYG22B-E3/TR and BYG22B-E3/TR3 (Vishay General Semiconductor) meet all primary substitution parameters but employ Avalanche technology instead of Standard technology. Forward voltage is elevated to 1.1 V at 2 A (compared to 920 mV), and reverse leakage current is reduced to 1 µA at 100 V (compared to 5 µA). These parts are Active products with ROHS3 compliance and extended operating temperature range (-55°C to 150°C). Avalanche technology provides enhanced reverse voltage protection, making these parts suitable for applications requiring additional transient suppression.

ES2B-LTP (Micro Commercial Co) matches all primary parameters but carries a "Not For New Designs" status. Reverse recovery time is 35 ns (compared to 25 ns), and operating temperature range extends to 175°C. This part is suitable only for legacy system maintenance and should not be selected for new designs.

Not Recommended:

S1B-E3/5AT (Vishay General Semiconductor) does not qualify as a direct equivalent. Current rating is 1 A (not 2 A), and speed classification is Standard Recovery (not Fast Recovery). This part is unsuitable for applications requiring 2 A rectified current or fast recovery characteristics.

Frequently Asked Questions (FAQ)

Q: Can ES2BA-13-F directly replace CEFA202-G in existing circuits?

A: Yes. ES2BA-13-F matches all critical electrical parameters: 100 V reverse voltage, 2 A average rectified current, 25 ns reverse recovery time, and fast recovery speed classification. Package and mounting type are identical (DO-214AC SMA surface mount). ES2BA-13-F is an Active product with ROHS3 compliance, providing superior long-term availability compared to the obsolete CEFA202-G.

Q: What is the difference between the Vishay BYG22B-E3/TR and BYG22B-E3/TR3 parts?

A: Both parts are electrically identical and meet all primary substitution parameters for CEFA202-G. The difference is packaging: BYG22B-E3/TR is supplied in standard Tape & Reel format, while BYG22B-E3/TR3 is also supplied in Tape & Reel format. Inventory levels differ (1900 Pcs vs. 8309 Pcs). Selection between these two should be based on procurement volume requirements and supplier availability.

Q: Why is the forward voltage higher on BYG22B-E3/TR and BYG22B-E3/TR3?

A: These parts employ Avalanche technology, which provides enhanced reverse voltage protection through controlled avalanche breakdown. The higher forward voltage (1.1 V vs. 920 mV) is a characteristic of this technology. Avalanche diodes are suitable for applications requiring transient suppression or reverse voltage protection beyond standard rectification.

Q: Can MURA210T3G replace CEFA202-G?

A: Yes. MURA210T3G matches all primary substitution parameters: 100 V reverse voltage, 2 A average rectified current, fast recovery speed classification, and DO-214AC SMA package. Forward voltage is 940 mV at 2 A (within acceptable tolerance), and reverse leakage is 2 µA at 100 V (within acceptable tolerance). MURA210T3G is an Active product with ROHS3 compliance and extended operating temperature range (-65°C to 175°C).

Q: Is ES2B-LTP suitable for new designs?

A: No. ES2B-LTP carries a "Not For New Designs" product status. While it meets primary electrical parameters, this designation indicates the manufacturer does not recommend this part for new circuit designs. ES2B-LTP is suitable only for legacy system maintenance and repair. For new designs, select ES2BA-13-F, MURA210T3G, or BYG22B-E3/TR3 instead.

Q: Why does S1B-E3/5AT appear in the substitute list but is not recommended?

A: S1B-E3/5AT does not meet critical substitution parameters. Current rating is 1 A (not 2 A), and speed classification is Standard Recovery (not Fast Recovery). This part cannot handle the 2 A rectified current required by CEFA202-G applications and exhibits slower recovery characteristics. S1B-E3/5AT is suitable only for applications rated at 1 A with standard recovery requirements.

Q: What compliance certifications should I verify for substitute parts?

A: All recommended substitute parts (ES2BA-13-F, MURA210T3G, BYG22B-E3/TR, BYG22B-E3/TR3) are ROHS3 compliant and REACH unaffected. All parts carry ECCN EAR99 classification and HTSUS code 8541.10.0080. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for all parts, indicating no special moisture handling requirements during storage or assembly.

Q: Can I use BYG22B-E3/TR in high-temperature applications?

A: BYG22B-E3/TR supports operating junction temperatures from -55°C to 150°C, matching the maximum junction temperature of CEFA202-G (150°C). For applications requiring extended high-temperature operation beyond 150°C, MURA210T3G or ES2B-LTP support up to 175°C junction temperature. Verify specific application temperature requirements before selection.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message