CSFC303-G Equivalent & Substitute Parts Reference

Part Overview

The CSFC303-G is a general-purpose rectifier diode manufactured by Comchip Technology, rated for 200 V DC reverse voltage and 3 A average rectified current in a surface mount DO-214AB (SMC) package. This component is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or inventory limitations. The parts listed below maintain electrical and mechanical compatibility within the specified parameter ranges for this 200 V / 3 A rectifier diode category.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A	mV
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Mounting Type	Surface Mount	—
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction (Max)	150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the CSFC303-G is determined by strict adherence to the following electrical and mechanical criteria:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 200 V (exact match required)
Current - Average Rectified (Io): 3 A (exact match required)
Mounting Type: Surface Mount (exact match required)
Package / Case: DO-214AB, SMC (exact match required)
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io) (exact match required)

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max) @ If: 900–950 mV @ 3 A (acceptable range)
Reverse Recovery Time (trr): 20–40 ns (acceptable range)
Current - Reverse Leakage @ Vr: 5–10 µA @ 200 V (acceptable range)
Operating Temperature - Junction: −50°C to 175°C minimum (acceptable range)
RoHS Status: ROHS3 Compliant (required)

Parts that deviate from primary criteria or exhibit slower recovery speeds (Standard Recovery >500ns) are listed but flagged for application-specific evaluation.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	trr [ns]	Ir @ Vr [µA]	Speed	Tj (Max) [°C]	Product Status
CSFC303-G	Comchip Technology	200	3	950 @ 3 A	35	5 @ 200 V	Fast Recovery ≤ 500ns	150	Active
ER3D-TP	Micro Commercial Co	200	3	950 @ 3 A	35	5 @ 200 V	Fast Recovery ≤ 500ns	175	Active
ES3D	Diotec Semiconductor	200	3	900 @ 3 A	20	5 @ 200 V	Fast Recovery ≤ 500ns	150	Active
ES3D-13-F	Diodes Incorporated	200	3	900 @ 3 A	25	10 @ 200 V	Fast Recovery ≤ 500ns	150	Active
ES3DHE3_A/H	Vishay General Semiconductor - Diodes Division	200	3	900 @ 3 A	30	10 @ 200 V	Fast Recovery ≤ 500ns	150	Active
ESH3D-E3/57T	Vishay General Semiconductor - Diodes Division	200	3	900 @ 3 A	40	5 @ 200 V	Fast Recovery ≤ 500ns	175	Active
MURS320-13-F	Diodes Incorporated	200	3	875 @ 3 A	25	5 @ 200 V	Fast Recovery ≤ 500ns	175	Active
RS3D-13-F	Diodes Incorporated	200	3	1300 @ 3 A	150	5 @ 200 V	Fast Recovery ≤ 500ns	150	Active
RS3D-E3/57T	Vishay General Semiconductor - Diodes Division	200	3	1300 @ 2.5 A	150	10 @ 200 V	Fast Recovery ≤ 500ns	150	Active
S3D-13-F	Diodes Incorporated	200	3	1150 @ 3 A	2000	10 @ 200 V	Standard Recovery >500ns	150	Active

Engineering Selection Recommendations

Tier 1 - Direct Equivalents (Recommended Primary Substitutes):

ER3D-TP, ES3D, ES3D-13-F, ES3DHE3_A/H, and ESH3D-E3/57T maintain full electrical compatibility with CSFC303-G across all primary and secondary parameters. All are Active product status with ROHS3 compliance. ER3D-TP and ESH3D-E3/57T offer extended maximum junction temperature (175°C vs. 150°C), providing thermal margin in high-temperature applications. ES3D exhibits the fastest reverse recovery time (20 ns), beneficial for high-frequency switching applications.

Tier 2 - Compatible Substitutes (Application-Dependent):

MURS320-13-F meets all primary criteria with slightly lower forward voltage (875 mV vs. 950 mV) and extended temperature range (−65°C to 175°C). This part is suitable for applications requiring lower forward voltage drop or wider operating temperature range.

Tier 3 - Limited Compatibility (Not Recommended for Direct Substitution):

RS3D-13-F and RS3D-E3/57T exhibit significantly higher forward voltage (1300 mV) and reverse recovery time (150 ns), deviating substantially from CSFC303-G specifications. These parts are classified as standard recovery diodes and are not suitable for applications requiring fast recovery characteristics.

S3D-13-F is classified as Standard Recovery (>500ns, 2 µs trr) and does not meet the Fast Recovery speed requirement. This part is not recommended as a substitute for CSFC303-G.

Compliance & Certification:

All recommended Tier 1 and Tier 2 substitutes are ROHS3 compliant and REACH unaffected. ES3DHE3_A/H carries AEC-Q101 automotive qualification, suitable for automotive and high-reliability applications.

Frequently Asked Questions (FAQ)

Q1: Can RS3D-13-F or RS3D-E3/57T be used as direct replacements for CSFC303-G?

No. While RS3D-13-F and RS3D-E3/57T match the voltage and current ratings, they exhibit forward voltage of 1300 mV (compared to 950 mV for CSFC303-G) and reverse recovery time of 150 ns (compared to 35 ns). These deviations indicate slower switching characteristics unsuitable for applications designed around CSFC303-G performance.

Q2: What is the difference between Fast Recovery and Standard Recovery classifications?

Fast Recovery diodes (≤500ns) are optimized for high-frequency switching applications and exhibit lower reverse recovery time. Standard Recovery diodes (>500ns) are suitable for lower-frequency rectification. CSFC303-G is classified as Fast Recovery; S3D-13-F is Standard Recovery. Substituting Standard Recovery for Fast Recovery may cause circuit malfunction or efficiency loss.

Q3: Does forward voltage variation affect circuit performance?

Forward voltage (Vf) variation directly impacts power dissipation and voltage regulation. CSFC303-G specifies 950 mV @ 3 A. Substitutes with lower Vf (900 mV, 875 mV) reduce power loss; substitutes with higher Vf (1150 mV, 1300 mV) increase power dissipation. Application-specific thermal and efficiency requirements determine acceptable Vf range.

Q4: Are all substitute parts available in the same packaging?

All recommended substitutes are packaged in DO-214AB (SMC) surface mount format, matching CSFC303-G. Packaging compatibility is confirmed across all listed parts.

Q5: What is the significance of reverse recovery time (trr)?

Reverse recovery time determines switching speed and switching losses. CSFC303-G specifies 35 ns. Faster recovery (20 ns for ES3D) reduces switching losses in high-frequency applications. Slower recovery (150 ns for RS3D series) increases switching losses and is unsuitable for fast-switching circuits.

Q6: Can ES3DHE3_A/H be used in automotive applications?

Yes. ES3DHE3_A/H carries AEC-Q101 automotive qualification and is suitable for automotive and high-reliability applications requiring automotive-grade components.

Q7: What is the impact of operating temperature range on part selection?

CSFC303-G specifies maximum junction temperature of 150°C. Substitutes with extended range (−50°C to 175°C or −65°C to 175°C) provide thermal margin in extreme temperature environments. Application thermal requirements determine whether extended range is necessary.

Q8: Are all substitute parts ROHS3 compliant?

Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements equivalent to CSFC303-G.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message