Equivalent & Substitute Parts Reference for FMG-G26S

Part Overview

Manufacturer Part Number FMG-G26S, produced by Sanken Electric USA Inc., is a diode used for general purpose rectification, rated at 600 V, 4A, and packaged in the TO-220F-2L through-hole package. The device features fast recovery speeds and is compliant with RoHS standards. The FMG-G26S is currently designated as obsolete. As a result, engineers are required to identify alternative models with matching electrical, mechanical, and regulatory criteria to ensure continued design and production support.

Key Parameters

Parameter	Value
Manufacturer Part Number	FMG-G26S
Category	Diodes, Rectifiers
Description	Diode 600 V 4A Through Hole TO-220F-2L
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io)	4A
Voltage - Forward (Vf) (Max) @ If	2.5 V @ 4 A
Speed	Fast Recovery =< 500ns, > 200mA (Io)
Reverse Recovery Time (trr)	100 ns
Current - Reverse Leakage @ Vr	500 µA @ 600 V
Mounting Type	Through Hole
Package / Case	TO-220-2 Full Pack
Supplier Device Package	TO-220F-2L
Operating Temperature - Junction	-40°C ~ 150°C
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute relationships for the FMG-G26S have been defined solely by matching the following quantifiable parameters: diode category, DC reverse voltage rating (Vr), average rectified current (Io), forward voltage drop (Vf), fast recovery speed specification, reverse recovery time (trr), reverse leakage current at Vr, mounting type, package type, supplier device package, operating temperature range, RoHS compliance, and moisture sensitivity level (MSL). Only parts meeting or exceeding these criteria are considered suitable alternatives.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Speed	Reverse Recovery Time (trr)	Current - Reverse Leakage @ Vr	Mounting Type	Package / Case	Supplier Device Package	Operating Temperature - Junction	RoHS Status	Moisture Sensitivity Level (MSL)	Product Status
FMG-G26S	Sanken Electric USA Inc.	600 V	4A	2.5 V @ 4 A	Fast Recovery =< 500ns, > 200mA (Io)	100 ns	500 µA @ 600 V	Through Hole	TO-220-2 Full Pack	TO-220F-2L	-40°C ~ 150°C	RoHS Compliant	1 (Unlimited)	Obsolete
BYC20X-600PQ	WeEn Semiconductors	600 V	20A	2.5 V @ 20 A	Fast Recovery =< 500ns, > 200mA (Io)	35 ns	10 µA @ 600 V	Through Hole	TO-220-2 Full Pack, Isolated Tab	TO-220FP	175°C (Max)	ROHS3 Compliant	1 (Unlimited)	Active
BYC8X-600P,127	WeEn Semiconductors	600 V	8A	1.9 V @ 8 A	Fast Recovery =< 500ns, > 200mA (Io)	18 ns	20 µA @ 600 V	Through Hole	TO-220-2 Full Pack, Isolated Tab	TO-220FP	175°C (Max)	RoHS Compliant	1 (Unlimited)	Active
FFPF10UA60ST	onsemi	600 V	10A	2.3 V @ 10 A	Fast Recovery =< 500ns, > 200mA (Io)	120 ns	100 µA @ 600 V	Through Hole	TO-220-2 Full Pack	TO-220F-2L	-65°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	Obsolete
MURF1560G	onsemi	600 V	15A	1.5 V @ 15 A	Fast Recovery =< 500ns, > 200mA (Io)	60 ns	10 µA @ 600 V	Through Hole	TO-220-2 Full Pack	TO-220FP	-65°C ~ 175°C	ROHS3 Compliant	Not Applicable	Active
RFNL10TJ6SGC9	Rohm Semiconductor	600 V	10A	1.3 V @ 10 A	Fast Recovery =< 500ns, > 200mA (Io)	150 ns	10 µA @ 600 V	Through Hole	TO-220-2	TO-220ACFP	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	Active
RFNL15TJ6SGC9	Rohm Semiconductor	600 V	15A	1.3 V @ 15 A	Fast Recovery =< 500ns, > 200mA (Io)	160 ns	10 µA @ 600 V	Through Hole	TO-220-2 Full Pack	TO-220ACFP	150°C	ROHS3 Compliant	3 (168 Hours)	Active
RFNL20TJ6SGC9	Rohm Semiconductor	600 V	20A	1.3 V @ 20 A	Fast Recovery =< 500ns, > 200mA (Io)	180 ns	10 µA @ 600 V	Through Hole	TO-220-2 Full Pack	TO-220ACFP	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	Active
RFNL5TJ6SGC9	Rohm Semiconductor	600 V	5A	1.3 V @ 5 A	Fast Recovery =< 500ns, > 200mA (Io)	130 ns	10 µA @ 600 V	Through Hole	TO-220-2 Full Pack	TO-220ACFP	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	Active
RFV12TJ6SGC9	Rohm Semiconductor	600 V	12A	2.8 V @ 12 A	Fast Recovery =< 500ns, > 200mA (Io)	45 ns	10 µA @ 600 V	Through Hole	TO-220-2 Full Pack	TO-220ACFP	150°C	ROHS3 Compliant	3 (168 Hours)	Active
RFV15TJ6SGC9	Rohm Semiconductor	600 V	15A	2.8 V @ 15 A	Fast Recovery =< 500ns, > 200mA (Io)	50 ns	10 µA @ 600 V	Through Hole	TO-220-2 Full Pack	TO-220ACFP	150°C	ROHS3 Compliant	3 (168 Hours)	Active
RFV8TJ6SGC9	Rohm Semiconductor	600 V	8A	2.8 V @ 8 A	Fast Recovery =< 500ns, > 200mA (Io)	45 ns	10 µA @ 600 V	Through Hole	TO-220-2 Full Pack	TO-220ACFP	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	Active
RFVS8TJ6SGC9	Rohm Semiconductor	600 V	8A	3 V @ 8 A	Fast Recovery =< 500ns, > 200mA (Io)	40 ns	10 µA @ 600 V	Through Hole	TO-220-2 Full Pack	TO-220ACFP	150°C (Max)	ROHS3 Compliant	1 (Unlimited)	Active
STTH12S06FP	STMicroelectronics	600 V	12A	3.4 V @ 12 A	Fast Recovery =< 500ns, > 200mA (Io)	21 ns	30 µA @ 600 V	Through Hole	TO-220-2 Full Pack, Isolated Tab	TO-220FPAC	175°C (Max)	ROHS3 Compliant	1 (Unlimited)	Active
STTH5R06D	STMicroelectronics	600 V	5A	2.9 V @ 5 A	Fast Recovery =< 500ns, > 200mA (Io)	40 ns	20 µA @ 600 V	Through Hole	TO-220-2	TO-220AC	175°C (Max)	ROHS3 Compliant	1 (Unlimited)	Active
STTH5R06FP	STMicroelectronics	600 V	5A	2.9 V @ 5 A	Fast Recovery =< 500ns, > 200mA (Io)	40 ns	20 µA @ 600 V	Through Hole	TO-220-2 Full Pack, Isolated Tab	TO-220FPAC	175°C (Max)	ROHS3 Compliant	1 (Unlimited)	Active
UGF5JHC0G	Taiwan Semiconductor Corporation	600 V	5A	3 V @ 5 A	Fast Recovery =< 500ns, > 200mA (Io)	25 ns	30 µA @ 600 V	Through Hole	TO-220-2 Full Pack	ITO-220AC	-55°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	Active
VS-ETL1506FP-M3	Vishay General Semiconductor - Diodes Division	600 V	15A	1.07 V @ 15 A	Fast Recovery =< 500ns, > 200mA (Io)	210 ns	15 µA @ 600 V	Through Hole	TO-220-2 Full Pack	TO-220-2 Full Pack	-65°C ~ 175°C	ROHS3 Compliant	1 (Unlimited)	Active

Engineering Selection Recommendations

Given the obsolete status of FMG-G26S, it is necessary to select substitute models that are active or not discontinued. All listed alternatives are RoHS compliant, and most maintain Moisture Sensitivity Level (MSL) 1 (Unlimited), matching FMG-G26S in compliance and reliability considerations. Substitutes should be selected strictly based on equivalency in electrical ratings, fast-recovery performance, package type, mounting method, and regulatory conformity as presented in key parameters.

Frequently Asked Questions (FAQ)

Q1: What are the primary electrical parameters to match when selecting substitutes for FMG-G26S?
A: Voltage - DC Reverse (Vr), Current - Average Rectified (Io), Voltage - Forward (Vf), speed (fast recovery), reverse recovery time (trr), and reverse leakage current.

Q2: Do substitute parts need to match the exact package or can similar variants be used?
A: Substitute parts must offer through-hole mounting and use the same or compatible TO-220-based package types to ensure physical fit and thermal management equivalence.

Q3: Does RoHS compliance affect substitute selection?
A: Yes, all substitutes listed are RoHS compliant, matching the main part's regulatory status.

Q4: Is there any impact from Moisture Sensitivity Level (MSL)?
A: All substitutes listed have MSL ratings provided. MSL 1 (Unlimited) matches the FMG-G26S rating, ensuring storage and handling compatibility.

Q5: Can substitutes with higher current capability or extended temperature ranges be considered?
A: If all other parameters are met or exceeded, alternatives with higher current or broader temperature range are included.

Q6: Are only fast-recovery diodes considered as substitutes?
A: Yes, only diodes with specified fast recovery speeds aligned to the “Fast Recovery =< 500ns, > 200mA (Io)” requirement are considered equivalent.

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