SFH601-3X019T Equivalent & Substitute Parts

Part Overview

The SFH601-3X019T is an optoisolator transistor with base output manufactured by Vishay Semiconductor Opto Division. This component provides 5000Vrms isolation with a single channel, transistor output configuration, and 6-SMD surface mount packaging. The part is currently classified as obsolete, making equivalent substitutes necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer Part Number	SFH601-3X019T
Manufacturer	Vishay Semiconductor Opto Division
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	5000Vrms
Current Transfer Ratio (Min)	100% @ 10mA
Current Transfer Ratio (Max)	200% @ 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 SFH601-3X019T is determined by the following critical parameters:

Primary Substitution Criteria:

Voltage - Isolation: 5000Vrms minimum
Number of Channels: 1
Output Type: Transistor with Base
Package / Case: 6-SMD, Gull Wing
Current Transfer Ratio: 100% @ 10mA minimum
Vce Saturation: 400mV maximum
Voltage - Output (Max): 100V minimum
Operating Temperature Range: -55°C to 100°C minimum

Substitute parts are grouped into two categories:

Parametric Equivalents maintain identical electrical specifications and are direct replacements with no design modifications required.

Manufacturer Recommended Alternatives meet the core isolation voltage, channel count, output type, and package requirements but may have variations in secondary parameters such as turn-on/turn-off times, rise/fall times, or forward voltage characteristics. These alternatives are suitable for applications where the primary isolation and switching functionality are the design drivers.

Parameter Comparison

Parameter	SFH601-3X019T	SFH601-3X007T	SFH601-3X017T	CNY17-3S(TA)-V	SFH601-1SMT&R	SFH601-2SMT&R	SFH601-3SMT&R
Manufacturer	Vishay	Vishay	Vishay	Everlight	Isocom	Isocom	Isocom
Product Status	Obsolete	Active	Active	Active	Active	Active	Active
Voltage - Isolation	5000Vrms	5000Vrms	5000Vrms	5000Vrms	7500Vpk	5300Vrms	7500Vpk
Number of Channels	1	1	1	1	1	1	1
Current Transfer Ratio (Min)	100% @ 10mA	100% @ 10mA	100% @ 10mA	100% @ 10mA	63% @ 10mA	63% @ 10mA	63% @ 10mA
Current Transfer Ratio (Max)	200% @ 10mA	200% @ 10mA	200% @ 10mA	200% @ 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
Voltage - Output (Max)	100V	100V	100V	80V	100V	100V	100V
Current - Output / Channel	50mA	50mA	50mA	Not specified	Not specified	Not specified	Not specified
Voltage - Forward (Vf) (Typ)	1.25V	1.25V	1.25V	1.65V (Max)	1.2V	1.2V	1.2V
Vce Saturation (Max)	400mV	400mV	400mV	300mV	400mV	400mV	400mV
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 110°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
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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging Type	Bulk	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Parametric Equivalents (Preferred):

SFH601-3X007T and SFH601-3X017T are parametric equivalents to the SFH601-3X019T. Both parts are manufactured by Vishay Semiconductor Opto Division with active product status. These parts maintain identical electrical specifications including 5000Vrms isolation, 100-200% current transfer ratio at 10mA, 100V maximum output voltage, and 400mV maximum Vce saturation. Both are ROHS3 compliant and available in Tape & Reel packaging. These are the primary substitutes for direct replacement without circuit modifications.

Manufacturer Recommended Alternatives:

CNY17-3S(TA)-V (Everlight Electronics) meets core isolation and switching requirements with 5000Vrms isolation and transistor with base output. This part has a lower maximum output voltage of 80V and higher forward voltage of 1.65V maximum, requiring circuit evaluation for applications with tight voltage margins.

SFH601-1SMT&R and SFH601-3SMT&R (Isocom Components) provide higher isolation ratings at 7500Vpk, exceeding the 5000Vrms requirement. These parts have lower current transfer ratios (63-125% @ 10mA) compared to the original specification (100-200% @ 10mA), which may require input current adjustment in the design.

SFH601-2SMT&R (Isocom Components) offers 5300Vrms isolation with lower current transfer ratio specifications. This part is suitable for applications where the higher isolation voltage provides design margin.

All substitute parts maintain the 6-SMD Gull Wing package, single channel configuration, and ROHS3 compliance required for compatibility with existing PCB layouts and regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SFH601-3X007T or SFH601-3X017T be used as direct replacements for SFH601-3X019T?

A: Yes. Both parts are parametric equivalents with identical electrical specifications. No circuit modifications are required. The primary difference is packaging format (Tape & Reel versus bulk) and product status (Active versus Obsolete).

Q: What is the difference between the Vishay parametric equivalents and the Isocom alternatives?

A: Vishay parametric equivalents (SFH601-3X007T, SFH601-3X017T) maintain the 100-200% current transfer ratio specification. Isocom alternatives have lower current transfer ratios (63-125% @ 10mA), which may require increased input LED current to achieve the same output switching performance. Isocom parts also have different timing characteristics.

Q: Can CNY17-3S(TA)-V be used in place of SFH601-3X019T?

A: CNY17-3S(TA)-V meets the core isolation voltage and output type requirements. However, it has a lower maximum output voltage (80V versus 100V) and higher forward voltage (1.65V maximum versus 1.25V typical). Circuit evaluation is required to confirm compatibility with output voltage and input current requirements.

Q: What is the significance of the 7500Vpk isolation rating on SFH601-1SMT&R and SFH601-3SMT&R?

A: The 7500Vpk isolation rating exceeds the 5000Vrms requirement of the original part, providing additional isolation margin. However, these parts have lower current transfer ratios (63-125% @ 10mA), requiring design verification to ensure adequate output switching performance.

Q: Are all substitute parts available in the same 6-SMD Gull Wing package?

A: Yes. All substitute parts listed maintain the 6-SMD Gull Wing surface mount package, ensuring PCB layout compatibility without redesign.

Q: What packaging options are available for the substitute parts?

A: SFH601-3X007T and SFH601-3X017T are available in Tape & Reel (TR) packaging. Isocom alternatives (SFH601-1SMT&R, SFH601-2SMT&R, SFH601-3SMT&R) are available in Tape & Reel (TR) packaging. The original SFH601-3X019T was supplied in bulk packaging.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, meeting environmental and regulatory requirements equivalent to the original part.

Q: Which substitute part should be selected for new designs?

A: For new designs, SFH601-3X007T or SFH601-3X017T are recommended as they provide parametric equivalence to the original specification with active product status and established supply availability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message