SFH6156-3T Equivalent & Substitute Parts

Part Overview

The SFH6156-3T is an optoisolator with transistor output manufactured by Vishay Semiconductor Opto Division. This single-channel device provides 5300Vrms isolation with a current transfer ratio of 100–200% at 10mA input. The part is active in production status with extensive inventory availability (38,200 units in stock). Substitute parts are necessary to address supply chain constraints, packaging preferences, or specific performance requirements within the allowed electrical and mechanical parameter ranges.

Key Parameters

Parameter	Value
Manufacturer Part Number	SFH6156-3T
Manufacturer	Vishay Semiconductor Opto Division
Category	Optoisolators
Number of Channels	1
Voltage – Isolation	5300Vrms
Current Transfer Ratio (Min)	100% @ 10mA
Current Transfer Ratio (Max)	200% @ 10mA
Output Type	Transistor
Voltage – Output (Max)	70V
Current – Output / Channel	50mA
Vce Saturation (Max)	400mV
Operating Temperature	-55°C ~ 100°C
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Voltage – Isolation: Must be 5300Vrms or higher
Number of Channels: Must be 1
Output Type: Must be Transistor
Current Transfer Ratio Range: Must encompass or fall within 100–200% @ 10mA
Voltage – Output (Max): Must be 70V or higher
Current – Output / Channel: Must be 50mA or higher
Vce Saturation (Max): Must be 400mV or lower
Operating Temperature Range: Must include or exceed -55°C ~ 100°C
Mounting Type: Must be Surface Mount
Package / Case: Must be 4-SMD, Gull Wing
RoHS Status: Must be ROHS3 Compliant

Substitute parts are grouped into two categories:

Category 1: Manufacturer Recommended Substitutes (Vishay) Parts that maintain identical isolation voltage, output specifications, and thermal range while varying in current transfer ratio or packaging format.

Category 2: Parametric Equivalents (Vishay & Isocom) Parts that meet all critical electrical parameters but may differ in turn-on/turn-off timing, rise/fall time characteristics, or operating temperature lower limit.

Parameter Comparison

Parameter	SFH6156-3T	SFH6156-2T	SFH6106-3T	SFH6106-3X001T	SFH610A-3X007T	SFH6156-3X001T	SFH615A-2XSMT&R	SFH615A-3XSMT&R	SFH615A-4XSMT&R	SFH617A-3XSMT&R
Manufacturer	Vishay	Vishay	Vishay	Vishay	Vishay	Vishay	Isocom	Isocom	Isocom	Isocom
Voltage – Isolation	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	7.5Vpk
Current Transfer Ratio (Min)	100%	63%	100%	100%	100%	100%	63%	100%	160%	100%
Current Transfer Ratio (Max)	200%	125%	200%	200%	200%	200%	125%	200%	320%	200%
Turn On / Turn Off Time (Typ)	3µs, 2.3µs	3µs, 2.3µs	3µs, 2.3µs	3µs, 2.3µs	3µs, 2.3µs	3µs, 2.3µs	4.2µs, 23µs	4.2µs, 23µs	6µs, 25µs	–
Rise / Fall Time (Typ)	2µs, 2µs	2µs, 2µs	2µs, 2µs	2µs, 2µs	2µs, 2µs	2µs, 2µs	3µs, 14µs	3µs, 14µs	4.6µs, 15µs	4µs, 3µs
Voltage – Output (Max)	70V	70V	70V	70V	70V	70V	70V	70V	70V	70V
Current – Output / Channel	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA
Vce Saturation (Max)	400mV	400mV	400mV	400mV	400mV	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	-30°C ~ 100°C	-30°C ~ 100°C	-30°C ~ 100°C	-30°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
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing
Packaging Format	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Vishay SFH6156 Series (Direct Manufacturer Substitutes)

SFH6156-2T is a manufacturer-recommended substitute with identical isolation voltage and thermal range. The current transfer ratio minimum of 63% falls below the SFH6156-3T specification (100% minimum), making this part suitable only for applications tolerant of lower gain performance.

SFH6156-3X001T maintains identical electrical specifications to the SFH6156-3T but is supplied in Tape & Reel (TR) packaging instead of Cut Tape (CT) & Digi-Reel®. This variant is appropriate for high-volume production environments requiring reel-based component handling.

Vishay SFH6106 Series (Parametric Equivalents)

SFH6106-3T and SFH6106-3X001T are parametric equivalents with identical current transfer ratio specifications (100–200% @ 10mA) and thermal performance. The primary distinction is packaging format: SFH6106-3T uses Cut Tape (CT) & Digi-Reel®, while SFH6106-3X001T uses Tape & Reel (TR).

SFH610A-3X007T is supplied in Tape & Reel (TR) format and meets all critical electrical parameters. This part is suitable for applications requiring reel-based component delivery.

Isocom SFH615A Series (Parametric Equivalents with Timing Variations)

SFH615A-2XSMT&R has a current transfer ratio range of 63–125% @ 10mA, which does not meet the SFH6156-3T minimum specification of 100%. Turn-on and turn-off times are longer (4.2µs and 23µs respectively) compared to the SFH6156-3T (3µs and 2.3µs). Operating temperature range is -30°C ~ 100°C, which does not extend to -55°C. This part is not suitable for applications requiring the full SFH6156-3T performance envelope.

SFH615A-3XSMT&R meets the current transfer ratio specification (100–200% @ 10mA) but exhibits longer switching times (4.2µs turn-on, 23µs turn-off) and a reduced operating temperature range (-30°C ~ 100°C). This part is suitable for applications where extended low-temperature operation below -30°C is not required.

SFH615A-4XSMT&R has a current transfer ratio range of 160–320% @ 10mA, exceeding the SFH6156-3T maximum of 200%. Turn-on and turn-off times are significantly longer (6µs and 25µs). This part is suitable only for applications where higher gain and slower switching are acceptable.

Isocom SFH617A Series (Isolation Voltage Deviation)

SFH617A-3XSMT&R specifies isolation voltage as 7.5Vpk, which does not match the SFH6156-3T specification of 5300Vrms. This part does not meet the isolation voltage requirement and is not a suitable substitute.

Frequently Asked Questions (FAQ)

Q: Can SFH6156-2T be used as a direct replacement for SFH6156-3T?

A: SFH6156-2T is a manufacturer-recommended substitute with identical isolation voltage (5300Vrms), output voltage (70V), output current (50mA), and thermal range (-55°C ~ 100°C). However, the current transfer ratio minimum is 63% compared to 100% for the SFH6156-3T. This part is suitable only if the application can tolerate lower optical gain.

Q: What is the difference between Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) packaging?

A: Cut Tape (CT) & Digi-Reel® packaging is suitable for lower-volume or manual assembly processes. Tape & Reel (TR) packaging is designed for high-speed automated pick-and-place equipment. Both formats contain identical components; the difference is in delivery and handling method.

Q: Are Isocom SFH615A parts compatible with SFH6156-3T?

A: Isocom SFH615A parts meet the core electrical specifications (5300Vrms isolation, 70V output, 50mA output current, 400mV Vce saturation). However, they exhibit longer switching times and a reduced operating temperature range (-30°C ~ 100°C instead of -55°C ~ 100°C). These parts are suitable only if the application does not require operation below -30°C or fast switching performance.

Q: Why is SFH617A-3XSMT&R not listed as a suitable substitute?

A: SFH617A-3XSMT&R specifies isolation voltage as 7.5Vpk, which does not meet the SFH6156-3T requirement of 5300Vrms. This fundamental parameter mismatch makes it unsuitable for direct substitution.

Q: Can I use SFH610A-3X007T in place of SFH6156-3T?

A: Yes. SFH610A-3X007T meets all critical electrical parameters: 5300Vrms isolation, 100–200% current transfer ratio @ 10mA, 70V output voltage, 50mA output current, 400mV Vce saturation, and -55°C ~ 100°C operating temperature. The primary difference is Tape & Reel (TR) packaging instead of Cut Tape (CT) & Digi-Reel®.

Q: What should I consider when selecting between Vishay and Isocom substitutes?

A: Vishay SFH6106 and SFH610A series maintain identical switching characteristics (3µs turn-on, 2.3µs turn-off) and full thermal range (-55°C ~ 100°C). Isocom SFH615A series exhibits longer switching times (4.2–6µs turn-on, 23–25µs turn-off) and reduced thermal range (-30°C ~ 100°C). Select based on application requirements for switching speed and low-temperature operation.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message