SFH601-4X006 Equivalent & Substitute Parts

Part Overview

The SFH601-4X006 is a single-channel optoisolator with transistor output and base connection, manufactured by Vishay Semiconductor Opto Division. This component provides 5300Vrms isolation voltage and is housed in a 6-DIP through-hole package. The part is currently obsolete, making equivalent substitutes necessary for ongoing system support and new designs requiring this isolation topology.

Key Parameters

Parameter	Value
Manufacturer Part Number	SFH601-4X006
Manufacturer	Vishay Semiconductor Opto Division
Category	Optoisolators
Package / Case	6-DIP (0.400", 10.16mm)
Number of Channels	1
Voltage - Isolation	5300Vrms
Current Transfer Ratio (Min)	160% @ 10mA
Current Transfer Ratio (Max)	320% @ 10mA
Output Type	Transistor with Base
Voltage - Output (Max)	100V
Current - Output / Channel	50mA
Operating Temperature	-55°C ~ 100°C
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the SFH601-4X006 is determined by the following critical parameters:

Package compatibility: 6-DIP (0.400", 10.16mm) through-hole mounting
Isolation voltage: Minimum 5300Vrms or equivalent peak voltage rating
Output configuration: Transistor with base connection
Current transfer ratio range: 160% to 320% @ 10mA
Single-channel configuration
Input type: DC
Operating temperature range: -55°C ~ 100°C
Output voltage capability: 100V maximum
RoHS3 compliance and MSL Level 1

The substitute parts listed below meet these criteria within the allowed electrical and mechanical parameters for optoisolator transistor output devices.

Parameter Comparison

Parameter	SFH601-4X006	CNY17-4M	SFH601-1G	SFH601-2G	SFH601-3G	SFH601-4G	SFH601-5G
Manufacturer	Vishay	LITEON	Isocom	Isocom	Isocom	Isocom	Isocom
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Voltage - Isolation	5300Vrms	5000Vrms	7500Vpk	5300Vrms	7500Vpk	5300Vrms	7500Vpk
Number of Channels	1	1	1	1	1	1	1
Current Transfer Ratio (Min)	160% @ 10mA	160% @ 10mA	63% @ 10mA	63% @ 10mA	63% @ 10mA	63% @ 10mA	63% @ 10mA
Current Transfer Ratio (Max)	320% @ 10mA	320% @ 10mA	125% @ 10mA	125% @ 10mA	125% @ 10mA	125% @ 10mA	125% @ 10mA
Output Type	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor	Transistor with Base
Voltage - Output (Max)	100V	70V	100V	100V	100V	100V	100V
Current - Output / Channel	50mA	150mA	-	-	-	-	-
Voltage - Forward (Vf) (Typ)	1.25V	1.45V	1.2V	1.2V	1.2V	1.2V	1.2V
Vce Saturation (Max)	400mV	300mV	400mV	400mV	400mV	400mV	400mV
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Package / Case	6-DIP (0.400", 10.16mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.400", 10.16mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts are active products with ROHS3 compliance and MSL Level 1 rating, ensuring regulatory compliance and handling compatibility with the original SFH601-4X006.

CNY17-4M (LITEON) provides the closest electrical match with identical current transfer ratio specifications (160% to 320% @ 10mA) and maintains the transistor-with-base output configuration. This part is recommended as the primary substitute when isolation voltage requirements allow 5000Vrms operation.

SFH601-2G (Isocom) matches the exact isolation voltage specification (5300Vrms) and output voltage rating (100V) of the original part. This part is recommended when isolation voltage specification is critical to system design.

SFH601-1G, SFH601-3G, and SFH601-5G offer higher isolation voltage ratings (7500Vpk) and are suitable for applications requiring enhanced isolation margin. These parts feature lower current transfer ratio specifications (63% to 125% @ 10mA) and should be selected only when higher isolation voltage is a design requirement.

SFH601-4G is functionally equivalent to SFH601-2G with identical isolation voltage (5300Vrms) but features transistor output without base connection. This part is suitable only for applications that do not require base drive capability.

Frequently Asked Questions (FAQ)

Q: Can CNY17-4M replace SFH601-4X006 directly?

A: CNY17-4M is electrically compatible with matching current transfer ratio specifications and transistor-with-base output. The isolation voltage is 5000Vrms compared to 5300Vrms on the original part. Direct substitution is valid for applications where 5000Vrms isolation meets system requirements. Maximum output voltage is 70V on CNY17-4M versus 100V on the original part; verify this does not limit circuit operation.

Q: What is the difference between SFH601-2G and SFH601-4G?

A: Both parts share identical isolation voltage (5300Vrms) and output voltage rating (100V). The primary difference is output configuration: SFH601-2G includes base connection for transistor drive control, while SFH601-4G is transistor output only. Select SFH601-2G if base drive is required; select SFH601-4G only if base connection is not used in the circuit.

Q: Why do SFH601-1G, SFH601-3G, and SFH601-5G have lower current transfer ratios?

A: These parts are specified with 63% to 125% current transfer ratio at 10mA, compared to 160% to 320% on the original SFH601-4X006. Lower current transfer ratio indicates reduced optical coupling efficiency. These parts are suitable only when higher isolation voltage (7500Vpk) is a design requirement and the lower current transfer ratio does not compromise circuit performance.

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

A: All substitute parts are housed in 6-DIP (0.400", 10.16mm) through-hole packages, matching the original SFH601-4X006 package footprint and mounting method. No PCB layout modifications are required for mechanical compatibility.

Q: What compliance certifications apply to these substitute parts?

A: All substitute parts listed are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity rating. All parts are rated for -55°C to 100°C operating temperature range, matching the original part specifications.

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