SFH615ABM Equivalent & Substitute Parts

Part Overview

The SFH615ABM is a 5300Vrms optoisolator with transistor output manufactured by Vishay Semiconductor Opto Division. This component features single-channel isolation in a 4-DIP package and is designed for applications requiring high-voltage galvanic isolation with DC input and transistor output configuration. The SFH615ABM is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain compatibility across isolation voltage, output characteristics, package form factor, and operating temperature range.

Key Parameters

Parameter	SFH615ABM Value
Manufacturer	Vishay Semiconductor Opto Division
Category	Optoisolators
Product Status	Obsolete
Number of Channels	1
Voltage - Isolation	5300Vrms
Current Transfer Ratio (Min)	200% @ 5mA
Current Transfer Ratio (Max)	400% @ 5mA
Output Type	Transistor
Voltage - Output (Max)	70V
Current - Output / Channel	50mA
Vce Saturation (Max)	400mV
Operating Temperature	-55°C ~ 100°C
Package / Case	4-DIP (0.300", 7.62mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the SFH615ABM are selected based on strict electrical and mechanical compatibility criteria. All substitute parts must maintain the following parameters:

Voltage - Isolation: 5300Vrms (mandatory)
Output Type: Transistor (mandatory)
Voltage - Output (Max): 70V (mandatory)
Current - Output / Channel: 50mA (mandatory)
Vce Saturation (Max): 400mV (mandatory)
Package / Case: 4-DIP (0.300", 7.62mm) (mandatory)
Input Type: DC (mandatory)
Number of Channels: 1 (mandatory)
RoHS Status: ROHS3 Compliant (mandatory)
Moisture Sensitivity Level (MSL): 1 (Unlimited) (mandatory)

Substitute parts are grouped by Current Transfer Ratio (CTR) performance grade, which determines the gain characteristics of the optoisolator. The SFH615ABM operates at 200%-400% CTR @ 5mA. Active substitute parts are available across multiple CTR grades: 40%-80%, 63%-125%, 100%-200%, and 160%-320% @ 10mA. Selection depends on the specific CTR requirement of the application circuit.

Parameter Comparison

Parameter	SFH615ABM	SFH610A-1	SFH610A-2	SFH610A-3	SFH610A-4	SFH615A-1	SFH615A-2	SFH615A-3	SFH615A-4	SFH617A-1	SFH617A-2
Manufacturer	Vishay	Vishay	Vishay	Vishay	Vishay	Vishay	Vishay	Vishay	Vishay	Vishay	Vishay
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
Voltage - Isolation	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms
Current Transfer Ratio (Min)	200% @ 5mA	40% @ 10mA	63% @ 10mA	100% @ 10mA	160% @ 10mA	40% @ 10mA	63% @ 10mA	100% @ 10mA	160% @ 10mA	40% @ 10mA	63% @ 10mA
Current Transfer Ratio (Max)	400% @ 5mA	80% @ 10mA	125% @ 10mA	200% @ 10mA	320% @ 10mA	80% @ 10mA	125% @ 10mA	200% @ 10mA	320% @ 10mA	80% @ 10mA	125% @ 10mA
Turn On / Turn Off Time (Typ)	2µs, 25µs	3µs, 2.3µs	3µs, 2.3µs	3µs, 2.3µs	3µs, 2.3µs	3µs, 18µs	3µs, 2.3µs	3µs, 2.3µs	3µs, 2.3µs	3µs, 2.3µs	3µs, 2.3µs
Voltage - Output (Max)	70V	70V	70V	70V	70V	70V	70V	70V	70V	70V	70V
Current - Output / Channel	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA
Vce Saturation (Max)	400mV	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	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 110°C	-55°C ~ 110°C
Package / Case	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)
RoHS Status	ROHS3 Compliant	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)	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts are active products with ROHS3 compliance and MSL 1 rating, providing long-term availability and environmental compliance advantages over the obsolete SFH615ABM. The SFH610A series and SFH615A series maintain identical electrical and mechanical specifications to the SFH615ABM across isolation voltage, output voltage, output current, and saturation voltage parameters.

Selection between SFH610A and SFH615A variants depends on forward voltage (Vf) requirements: SFH610A parts specify 1.25V Vf while SFH615A parts specify 1.35V Vf. Within each series, selection is determined by Current Transfer Ratio grade matching the application circuit requirements.

The SFH617A series extends the operating temperature range to -55°C ~ 110°C, providing enhanced thermal performance for applications requiring higher maximum operating temperature. SFH617A parts are otherwise electrically equivalent to SFH615A parts and maintain the same package and isolation specifications.

Frequently Asked Questions (FAQ)

Q: Can SFH615ABM be directly replaced with any of the listed substitute parts?

A: Direct replacement is possible with SFH615A-3 and SFH615A-4, which match the Current Transfer Ratio range of the SFH615ABM (200%-400% maximum). Other variants operate at different CTR grades and require circuit evaluation to confirm compatibility with the intended application.

Q: What is the difference between SFH610A and SFH615A series?

A: The primary difference is forward voltage (Vf): SFH610A parts operate at 1.25V Vf while SFH615A parts operate at 1.35V Vf. All other electrical and mechanical parameters remain identical. Selection depends on input circuit design requirements.

Q: Why do substitute parts specify Current Transfer Ratio @ 10mA while SFH615ABM specifies @ 5mA?

A: The substitute parts are tested at a different input current level (10mA vs 5mA). Circuit designers must evaluate the CTR specifications against their specific input and output current requirements to ensure proper operation.

Q: Is the SFH617A series compatible with existing SFH615ABM designs?

A: SFH617A parts are electrically compatible with SFH615A equivalents and maintain the same 4-DIP package. The extended operating temperature range (-55°C ~ 110°C vs -55°C ~ 100°C) provides additional thermal margin. No circuit modifications are required for direct substitution.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All substitute parts are supplied in 4-DIP (0.300", 7.62mm) through-hole packages, maintaining mechanical compatibility with existing PCB designs. Packaging format is Tube for all active substitute parts.

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