SFH601-4X009 Equivalent & Substitute Parts

Part Overview

The SFH601-4X009 is an optoisolator transistor with base output manufactured by Vishay Semiconductor Opto Division. This component provides 5300Vrms isolation with a single channel, designed for DC input applications requiring transistor output with base connection. The part is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Manufacturer Part Number	SFH601-4X009
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
Mounting Type	Surface Mount
Package / Case	6-SMD, Gull Wing
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SFH601-4X009 is determined by the following critical parameters:

Isolation Voltage: Minimum 5300Vrms or equivalent peak voltage rating
Number of Channels: Single channel only
Output Configuration: Transistor with base output required
Maximum Output Voltage: 100V or higher
Maximum Output Current: 50mA or higher per channel
Vce Saturation: 400mV or lower
Operating Temperature Range: Must encompass -55°C to 100°C minimum
Package Type: 6-SMD, Gull Wing surface mount
Input Type: DC input
Compliance: ROHS3 compliant

Substitute parts are grouped into two categories based on isolation voltage specification:

Category A - 5300Vrms Isolation: SFH601-2SM, SFH601-2SMT&R, SFH601-4SM, SFH601-4SMT&R, and CNY17-4S(TA) meet the exact isolation voltage requirement with matching output specifications.

Category B - Higher Isolation (7500Vpk): SFH601-1SM, SFH601-1SMT&R, SFH601-3SM, and SFH601-3SMT&R provide enhanced isolation performance suitable for applications requiring greater voltage margin.

Parameter Comparison

Parameter	SFH601-4X009	CNY17-4S(TA)	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	Isocom	Isocom	Isocom	Isocom	Isocom	Isocom	Isocom	Isocom	Isocom
Voltage - Isolation	5300Vrms	5000Vrms	7500Vpk	7500Vpk	5300Vrms	5300Vrms	7500Vpk	7500Vpk	5300Vrms	5300Vrms	7500Vpk
Number of Channels	1	1	1	1	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	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
Voltage - Forward (Vf) (Typ)	1.25V	1.65V (Max)	1.2V	1.2V	1.2V	1.2V	1.2V	1.2V	1.2V	1.2V	1.2V
Current - DC Forward (If) (Max)	60mA	60mA	60mA	60mA	60mA	60mA	60mA	60mA	60mA	60mA	60mA
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
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
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
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Matched Isolation Voltage)

SFH601-2SM, SFH601-2SMT&R, SFH601-4SM, and SFH601-4SMT&R from Isocom Components maintain the 5300Vrms isolation specification of the original SFH601-4X009. All are active products with ROHS3 compliance. The SMT&R variants provide tape and reel packaging for automated assembly, while SM variants are supplied in tube packaging. These parts are direct functional equivalents with identical output voltage and saturation specifications.

CNY17-4S(TA) from Everlight Electronics provides 5000Vrms isolation, which is 300V lower than the original specification. This part is active and ROHS3 compliant with superior Vce saturation performance (300mV versus 400mV). The reduced isolation voltage requires application-level assessment for suitability.

Secondary Substitutes (Enhanced Isolation Voltage)

SFH601-1SM, SFH601-1SMT&R, SFH601-3SM, and SFH601-3SMT&R provide 7500Vpk isolation, exceeding the original 5300Vrms requirement. All are active products with ROHS3 compliance. These parts are suitable for applications requiring higher isolation margins. The extended operating temperature range of CNY17-4S(TA) (-55°C to 110°C) provides additional thermal headroom compared to the standard -55°C to 100°C range.

Packaging Considerations

Tape and reel (TR) packaged variants (SMT&R) are recommended for high-volume production with automated pick-and-place assembly. Tube packaged variants (SM) are suitable for lower-volume applications and manual assembly processes.

Frequently Asked Questions (FAQ)

Q: Can CNY17-4S(TA) replace SFH601-4X009 directly?

A: CNY17-4S(TA) provides 5000Vrms isolation versus the original 5300Vrms specification. Direct substitution is possible only if the application does not require the full 5300Vrms isolation margin. The part is electrically compatible with matching current transfer ratios and output specifications.

Q: What is the difference between SFH601-4SM and SFH601-4SMT&R?

A: Both parts are electrically identical. The primary difference is packaging: SFH601-4SM is supplied in tube format for manual handling, while SFH601-4SMT&R is supplied on tape and reel for automated assembly equipment.

Q: Are SFH601-1 and SFH601-3 series suitable replacements?

A: Yes. SFH601-1SM, SFH601-1SMT&R, SFH601-3SM, and SFH601-3SMT&R provide 7500Vpk isolation, which exceeds the original 5300Vrms requirement. These parts are pin-compatible and functionally equivalent with enhanced isolation performance.

Q: Why do Isocom parts show lower current transfer ratios?

A: Isocom optoisolators in this family specify 63% to 125% current transfer ratio at 10mA, compared to the Vishay SFH601-4X009 specification of 160% to 320%. This represents a different product line characteristic. Circuit design must account for the lower transfer ratio when selecting Isocom alternatives.

Q: Is the SFH601-4X009 still available?

A: The SFH601-4X009 is classified as obsolete. Active alternatives must be selected from the substitute parts listed. All recommended substitutes are currently in active production status.

Q: What compliance certifications apply to substitute parts?

A: All substitute parts listed are ROHS3 compliant. Additional certifications including REACH unaffected status and EAR99 export classification apply to all parts in this comparison.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message