SFH601-4X009T Equivalent & Substitute Parts

Part Overview

The SFH601-4X009T is an optoisolator transistor with base output manufactured by Vishay Semiconductor Opto Division. This component provides 5300Vrms isolation with a single channel, transistor output configuration, and 6-SMD surface mount packaging. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	SFH601-4X009T
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
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the SFH601-4X009T is determined by the following critical parameters:

Primary Substitution Criteria:

Single channel configuration
Transistor with base output type
5300Vrms isolation voltage (or equivalent)
6-SMD, Gull Wing surface mount package
DC input type
Operating temperature range -55°C to 100°C minimum
ROHS3 compliance

Parametric Equivalent: SFH601-4X007T maintains identical electrical specifications and isolation voltage, differing only in packaging format (Tape & Reel versus standard packaging). This part is functionally interchangeable with identical performance characteristics.

Manufacturer Recommended Alternatives: Parts from the SFH601 series (SFH601-1SM, SFH601-1SMT&R, SFH601-2SM, SFH601-2SMT&R, SFH601-3SM, SFH601-3SMT&R, SFH601-4SM, SFH601-4SMT&R) and CNY17-4S(TA) from Everlight Electronics provide functional substitution with variations in isolation voltage, current transfer ratio, and switching characteristics. These alternatives maintain the same package type and mounting configuration.

Parameter Comparison

Parameter	SFH601-4X009T	SFH601-4X007T	CNY17-4S(TA)	SFH601-4SM	SFH601-4SMT&R
Manufacturer	Vishay	Vishay	Everlight	Isocom	Isocom
Number of Channels	1	1	1	1	1
Voltage - Isolation	5300Vrms	5300Vrms	5000Vrms	5300Vrms	5300Vrms
Current Transfer Ratio (Min)	160% @ 10mA	160% @ 10mA	160% @ 10mA	63% @ 10mA	63% @ 10mA
Current Transfer Ratio (Max)	320% @ 10mA	320% @ 10mA	320% @ 10mA	125% @ 10mA	125% @ 10mA
Turn On Time (Typ)	3µs	3µs	10µs	4.2µs	4.2µs
Turn Off Time (Typ)	2.3µs	2.3µs	9µs	2.3µs	2.3µs
Output Type	Transistor with Base	Transistor with Base	Transistor with Base	Transistor	Transistor
Voltage - Output (Max)	100V	100V	80V	100V	100V
Vce Saturation (Max)	400mV	400mV	300mV	400mV	400mV
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 110°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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Replacement (Parametric Equivalent): SFH601-4X007T is the primary substitute for SFH601-4X009T. Both parts are manufactured by Vishay with identical electrical specifications, isolation voltage, and switching characteristics. The only difference is packaging format (Tape & Reel). This part is currently active and maintains full ROHS3 compliance.

Alternative Substitutes (Same Isolation Voltage): SFH601-4SM and SFH601-4SMT&R from Isocom Components maintain the 5300Vrms isolation voltage and 6-SMD package configuration. These parts have lower current transfer ratios (63-125% versus 160-320%) and different switching times. Both are active products with ROHS3 compliance.

Cross-Manufacturer Alternative: CNY17-4S(TA) from Everlight Electronics provides functional substitution with 5000Vrms isolation (300Vrms lower than the original). This part maintains the same package type and DC input configuration but has slower switching times (10µs turn-on versus 3µs) and lower maximum output voltage (80V versus 100V). This part is active and ROHS3 compliant.

Procurement Consideration: SFH601-4X007T is recommended as the first choice due to identical specifications and active product status. Alternative parts from the SFH601 series and CNY17-4S(TA) are suitable only when specific application requirements allow for the documented parameter variations.

Frequently Asked Questions (FAQ)

Q: Can SFH601-4X007T directly replace SFH601-4X009T? A: Yes. SFH601-4X007T is a parametric equivalent with identical electrical specifications, isolation voltage, and switching characteristics. The difference is packaging format (Tape & Reel). Both are 6-SMD, Gull Wing surface mount components.

Q: What is the key difference between SFH601-4X009T and SFH601-4SM? A: Both maintain 5300Vrms isolation and 6-SMD packaging. The primary differences are current transfer ratio (160-320% versus 63-125%) and switching times. SFH601-4SM has slower turn-on and turn-off characteristics.

Q: Is CNY17-4S(TA) a suitable substitute? A: CNY17-4S(TA) provides functional substitution with the same package type and single-channel configuration. However, it has 300Vrms lower isolation (5000Vrms), slower switching times, and lower maximum output voltage (80V). Use only if application requirements permit these parameter variations.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original SFH601-4X009T specification.

Q: What packaging options are available for substitutes? A: Substitute parts are available in Tube and Tape & Reel (TR) packaging formats. Both maintain the 6-SMD, Gull Wing surface mount configuration. Select based on procurement and assembly requirements.

Q: Why is SFH601-4X009T listed as obsolete? A: The original part is obsolete. SFH601-4X007T and other active alternatives from the SFH601 series provide continued design support and procurement availability.

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