SS320 M6G Equivalent & Substitute Parts

Part Overview

The SS320 M6G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 200 V DC reverse voltage and 3 A average rectified current in a DO-214AB (SMC) surface mount package. This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while supporting the same surface mount package configuration.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	850 mV @ 3 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	100 µA @ 200 V	µA
Mounting Type	Surface Mount	—
Package / Case	DO-214AB, SMC	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the SS320 M6G are selected based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Voltage Rating: Reverse voltage must equal or exceed 200 V DC
Current Rating: Average rectified current must equal or exceed 3 A
Package: Must be DO-214AB (SMC) surface mount configuration
Speed Classification: Fast Recovery (≤ 500ns, > 200mA) or equivalent
Thermal Range: Operating junction temperature must accommodate -55°C to 150°C minimum
Compliance: RoHS3 compliance and REACH unaffected status required

Parts are grouped into two categories:

Direct Equivalents (200 V, 3 A, Fast Recovery): RS3D-M3/9AT, CFRC303-G, CSFC303-G, CURC303-G, ER3D-TP, ES3D, ES3D-13-F, ES3D-E3/57T, ES3D-E3/9AT

Non-Equivalent (exceeds current rating or different speed class): CGRC503-G (5 A rating, standard recovery speed)

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Speed	Reverse Leakage @ Vr [µA]	Tj (Max) [°C]	Package	Status
SS320 M6G	Taiwan Semiconductor Corporation	200	3	850 @ 3 A	Fast Recovery ≤ 500ns	100 @ 200 V	150	DO-214AB (SMC)	Discontinued
RS3D-M3/9AT	Vishay General Semiconductor - Diodes Division	200	3	1300 @ 2.5 A	Fast Recovery ≤ 500ns	10 @ 100 V	150	DO-214AB (SMC)	Active
CFRC303-G	Comchip Technology	200	3	1300 @ 3 A	Fast Recovery ≤ 500ns	5 @ 200 V	150	DO-214AB (SMC)	Active
CSFC303-G	Comchip Technology	200	3	950 @ 3 A	Fast Recovery ≤ 500ns	5 @ 200 V	150	DO-214AB (SMC)	Active
CURC303-G	Comchip Technology	200	3	1000 @ 3 A	Fast Recovery ≤ 500ns	5 @ 200 V	150	DO-214AB (SMC)	Active
ER3D-TP	Micro Commercial Co	200	3	950 @ 3 A	Fast Recovery ≤ 500ns	5 @ 200 V	175	DO-214AB (SMC)	Active
ES3D	Diotec Semiconductor	200	3	900 @ 3 A	Fast Recovery ≤ 500ns	5 @ 200 V	150	DO-214AB (SMC)	Active
ES3D-13-F	Diodes Incorporated	200	3	900 @ 3 A	Fast Recovery ≤ 500ns	10 @ 200 V	150	DO-214AB (SMC)	Active
ES3D-E3/57T	Vishay General Semiconductor - Diodes Division	200	3	900 @ 3 A	Fast Recovery ≤ 500ns	10 @ 200 V	150	DO-214AB (SMC)	Active
ES3D-E3/9AT	Vishay General Semiconductor - Diodes Division	200	3	900 @ 3 A	Fast Recovery ≤ 500ns	10 @ 200 V	150	DO-214AB (SMC)	Active

Engineering Selection Recommendations

All substitute parts listed in the Parameter Comparison table meet the electrical and mechanical requirements for direct replacement of the SS320 M6G. Selection among active alternatives should be based on:

Availability and Lead Time: ES3D-E3/9AT (110,400 units), ES3D-E3/57T (79,415 units), and ES3D (131,200 units) offer the highest inventory levels. ER3D-TP provides 16,840 units with extended temperature range to 175°C.

Forward Voltage Characteristics: ES3D, ES3D-13-F, ES3D-E3/57T, and ES3D-E3/9AT specify 900 mV forward voltage at 3 A, closest to the original 850 mV specification. CSFC303-G and ER3D-TP specify 950 mV. CURC303-G specifies 1000 mV. RS3D-M3/9AT and CFRC303-G specify 1300 mV but at different test currents.

Reverse Leakage: CFRC303-G, CSFC303-G, CURC303-G, ER3D-TP, and ES3D specify 5 µA at 200 V, superior to the original 100 µA specification. ES3D-13-F and ES3D-E3/57T specify 10 µA at 200 V.

Compliance Status: All substitute parts are RoHS3 compliant and REACH unaffected, meeting regulatory requirements equivalent to the original part.

Temperature Range: ER3D-TP extends the maximum junction temperature to 175°C, providing additional thermal margin beyond the original 150°C specification.

Frequently Asked Questions (FAQ)

Q: Can the SS320 M6G be replaced with any of the listed substitute parts?

A: Yes. All parts in the Parameter Comparison table meet the minimum electrical specifications (200 V reverse voltage, 3 A average rectified current, fast recovery speed) and package requirements (DO-214AB SMC surface mount) of the original part. All are RoHS3 compliant and REACH unaffected.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Fast recovery diodes have reverse recovery times ≤ 500 ns at currents > 200 mA. The SS320 M6G and all listed substitutes are fast recovery devices. The CGRC503-G listed in the input data is a standard recovery device (> 500 ns) and is not a suitable substitute due to different speed classification.

Q: Does forward voltage difference affect circuit performance?

A: Forward voltage specifications are provided for reference. The original SS320 M6G specifies 850 mV at 3 A. Substitute parts specify 900 mV to 1300 mV depending on manufacturer and test conditions. Actual forward voltage varies with junction temperature and instantaneous current. Circuit designs must accommodate the specified maximum forward voltage of the selected substitute part.

Q: Are tape and reel packaging options interchangeable with cut tape packaging?

A: Tape and reel (TR) and cut tape (CT) packaging refer to supply format only. The underlying component package (DO-214AB SMC) is identical. Both formats are suitable for automated assembly. Selection between TR and CT depends on production volume and handling equipment compatibility, not electrical performance.

Q: Why does the CGRC503-G appear in the substitute list if it is not equivalent?

A: The CGRC503-G is rated for 5 A average rectified current, exceeding the 3 A requirement of the SS320 M6G. It also uses standard recovery speed (> 500 ns) rather than fast recovery (≤ 500 ns). This part is not a direct substitute and is included only for reference in the input data.

Q: What is the significance of reverse leakage current specifications?

A: Reverse leakage current is the small current that flows through a reverse-biased diode. The original SS320 M6G specifies 100 µA at 200 V. Most substitute parts specify 5 to 10 µA at 200 V, representing lower leakage. Lower leakage reduces power dissipation and heat generation in reverse bias conditions. Circuits designed for the original 100 µA specification will operate with improved performance using substitutes with lower leakage.

Q: Can I use ER3D-TP if my circuit operates above 150°C?

A: ER3D-TP is rated for junction temperatures up to 175°C, compared to 150°C for most other substitutes. If your circuit requires operation above 150°C, ER3D-TP is the appropriate selection among the listed parts. All other substitutes are limited to 150°C maximum junction temperature.

Q: What does RoHS3 compliance mean for this part?

A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, hexavalent chromium, and certain flame retardants. All listed substitute parts are RoHS3 compliant, ensuring regulatory compatibility with the original SS320 M6G.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message