SFH601-4X017 Equivalent & Substitute Parts

Part Overview

The SFH601-4X017 is an optoisolator transistor with base output manufactured by Vishay Semiconductor Opto Division. This 6-SMD surface mount component provides 5300Vrms isolation with a single channel transistor output configuration. The part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	SFH601-4X017
Manufacturer	Vishay Semiconductor Opto Division
Category	Optoisolators
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
Vce Saturation (Max)	400mV
Operating Temperature	-55°C ~ 100°C
Package / Case	6-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the SFH601-4X017 are selected based on the following critical parameters:

Isolation Voltage Compatibility: The main part operates at 5300Vrms isolation. Substitute parts must maintain isolation voltage at or above this level. Parts with 5300Vrms or higher isolation (7500Vpk) are acceptable.

Output Configuration: The SFH601-4X017 features transistor output with base connection. Substitute parts must provide the same output type to ensure circuit compatibility.

Single Channel Operation: All substitutes maintain single-channel configuration matching the original part.

Package and Mounting: All substitutes use 6-SMD Gull Wing surface mount packaging, ensuring mechanical and electrical compatibility with existing PCB layouts.

Current Transfer Ratio Range: The original part specifies 160-320% @ 10mA. Substitute parts with lower CTR ranges (63-125% @ 10mA) operate within acceptable parameters for this device category.

Compliance and Status: All substitute parts are ROHS3 compliant and carry active product status, ensuring long-term availability and regulatory compliance.

Parameter Comparison

Parameter	SFH601-4X017	CNY17-4S(TA)-V	SFH601-1SM	SFH601-1SMT&R	SFH601-2SM	SFH601-2SMT&R	SFH601-3SM	SFH601-3SMT&R	SFH601-4SM	SFH601-4SMT&R	SFH601-5SM
Manufacturer	Vishay	Everlight Electronics	Isocom	Isocom	Isocom	Isocom	Isocom	Isocom	Isocom	Isocom	Isocom
Number of Channels	1	1	1	1	1	1	1	1	1	1	1
Voltage - Isolation	5300Vrms	5000Vrms	7500Vpk	7500Vpk	5300Vrms	5300Vrms	7500Vpk	7500Vpk	5300Vrms	5300Vrms	7500Vpk
Current Transfer Ratio (Min)	160% @ 10mA	160% @ 10mA	63% @ 10mA	63% @ 10mA	63% @ 10mA	63% @ 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	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 with Base	Transistor with Base	Transistor with Base	Transistor	Transistor	Transistor with Base
Voltage - Output (Max)	100V	80V	100V	100V	100V	100V	100V	100V	100V	100V	100V
Vce Saturation (Max)	400mV	300mV	400mV	400mV	400mV	400mV	400mV	400mV	400mV	400mV	400mV
Operating Temperature	-55°C ~ 100°C	-55°C ~ 110°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	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Package / Case	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitute - CNY17-4S(TA)-V (Everlight Electronics): This part maintains the highest parameter alignment with the original SFH601-4X017, including matching current transfer ratio range (160-320% @ 10mA) and 5000Vrms isolation. Active product status ensures long-term availability. Packaging is Tape & Reel format.

Secondary Substitutes - SFH601-2SM and SFH601-2SMT&R (Isocom): These parts match the exact isolation voltage (5300Vrms) and output configuration of the original part. Both are active products with full compliance. SFH601-2SM is supplied in Tube packaging, while SFH601-2SMT&R is supplied in Tape & Reel format.

Alternative Substitutes - SFH601-1SM, SFH601-1SMT&R, SFH601-3SM, SFH601-3SMT&R, SFH601-5SM: These parts provide higher isolation voltage (7500Vpk) with transistor with base output configuration. All are active products with ROHS3 compliance. Selection depends on packaging preference (Tube or Tape & Reel) and availability requirements.

Note on SFH601-4SM and SFH601-4SMT&R: These parts match the isolation voltage (5300Vrms) but feature transistor output without base connection, differing from the original part's transistor with base configuration. Use only if circuit design accommodates this output type difference.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with lower current transfer ratio than the original SFH601-4X017?

A: The original part specifies 160-320% CTR @ 10mA. Substitute parts with 63-125% CTR @ 10mA operate within acceptable parameters for optoisolator transistor devices. Circuit design must accommodate the lower CTR range through appropriate input current sizing.

Q: What is the difference between Tube and Tape & Reel packaging options?

A: Tube packaging (SM designation) is suitable for manual assembly and small-volume production. Tape & Reel packaging (SMT&R designation) is designed for automated pick-and-place assembly equipment. Both formats use identical 6-SMD Gull Wing component geometry and are electrically equivalent.

Q: Is CNY17-4S(TA)-V a direct replacement for SFH601-4X017?

A: CNY17-4S(TA)-V is functionally equivalent with matching current transfer ratio range and comparable isolation voltage (5000Vrms vs. 5300Vrms). Both are single-channel transistor with base output devices in 6-SMD Gull Wing packages. The part is manufactured by Everlight Electronics and carries active product status.

Q: Why do some substitute parts have higher isolation voltage (7500Vpk) than the original (5300Vrms)?

A: Higher isolation voltage provides additional safety margin and is fully compatible with circuits designed for 5300Vrms isolation. The higher rating does not negatively impact circuit performance and may improve long-term reliability in high-voltage applications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts carry ROHS3 compliance certification, matching the original SFH601-4X017 regulatory status.

Q: What is the key difference between SFH601-4SM and other SFH601 variants?

A: SFH601-4SM and SFH601-4SMT&R feature transistor output without base connection, whereas other variants (SFH601-1 through SFH601-3 and SFH601-5 series) provide transistor with base output. Circuit compatibility depends on whether base connection is required for your application.

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