SFH615A-2 Equivalent & Substitute Parts

Part Overview

The SFH615A-2 is an optoisolator with transistor output manufactured by Isocom Components 2004 LTD. This single-channel device provides 5300Vrms isolation voltage in a 4-DIP through-hole package. The part is currently active in production with 57040 units in stock. Equivalent and substitute parts are identified based on matching electrical characteristics, isolation ratings, output specifications, and package compatibility to support component sourcing flexibility and supply chain continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	SFH615A-2
Manufacturer	Isocom Components 2004 LTD
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	5300Vrms
Output Type	Transistor
Voltage - Output (Max)	70V
Current - Output / Channel	50mA
Current Transfer Ratio (Min)	63% @ 10mA
Current Transfer Ratio (Max)	125% @ 10mA
Package / Case	4-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Operating Temperature	-30°C ~ 100°C
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the SFH615A-2 are qualified based on the following criteria:

Electrical Equivalence: Matching isolation voltage (5300Vrms), single-channel configuration, transistor output type, maximum output voltage (70V), and output current rating (50mA).

Current Transfer Ratio: Minimum 63% and maximum 125% at 10mA input current.

Package Compatibility: 4-DIP through-hole package with 0.300" (7.62mm) spacing.

Input/Output Characteristics: DC input type, forward voltage (1.65V max), and Vce saturation (400mV max).

Environmental & Compliance: Operating temperature range -30°C to 100°C, ROHS3 compliance, and REACH unaffected status.

The identified substitutes maintain these core parameters while differing in packaging format (tube vs. standard) and minor timing specifications where applicable.

Parameter Comparison

Parameter	SFH615A-2	SFH615A-2X	SFH617A-2X
Manufacturer	Isocom Components 2004 LTD	Isocom Components 2004 LTD	Isocom Components 2004 LTD
Number of Channels	1	1	1
Voltage - Isolation	5300Vrms	5300Vrms	5300Vrms
Current Transfer Ratio (Min)	63% @ 10mA	63% @ 10mA	63% @ 10mA
Current Transfer Ratio (Max)	125% @ 10mA	125% @ 10mA	125% @ 10mA
Turn On / Turn Off Time (Typ)	4.2µs, 23µs	4.2µs, 23µs	Not specified
Rise / Fall Time (Typ)	3µs, 14µs	3µs, 14µs	4µs, 3µs
Output Type	Transistor	Transistor	Transistor
Voltage - Output (Max)	70V	70V	70V
Current - Output / Channel	50mA	50mA	50mA
Voltage - Forward (Vf) (Typ)	1.65V (Max)	1.65V (Max)	1.65V (Max)
Current - DC Forward (If) (Max)	50mA	50mA	50mA
Vce Saturation (Max)	400mV	400mV	400mV
Operating Temperature	-30°C ~ 100°C	-30°C ~ 100°C	-30°C ~ 100°C
Package / Case	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active
Inventory (Pcs)	57040	1692	12320

Engineering Selection Recommendations

All three parts—SFH615A-2, SFH615A-2X, and SFH617A-2X—are active products from Isocom Components 2004 LTD with ROHS3 compliance and REACH unaffected status. Selection between these parts is based on availability and packaging format:

SFH615A-2 is the primary part number with the highest inventory (57040 units) and standard packaging.

SFH615A-2X is a direct parametric equivalent with tube packaging and lower inventory (1692 units). This part maintains identical electrical specifications and timing characteristics.

SFH617A-2X is functionally equivalent with tube packaging and higher inventory (12320 units). This part differs in rise/fall time specifications (4µs, 3µs vs. 3µs, 14µs) and does not specify turn-on/turn-off time. The SFH617A-2X base product number indicates a different device series within the same isolation voltage class.

Selection should prioritize availability and packaging requirements. All parts meet the same compliance and environmental operating specifications.

Frequently Asked Questions (FAQ)

Q: Can SFH615A-2X be used as a direct replacement for SFH615A-2?

A: Yes. SFH615A-2X is a parametric equivalent with identical electrical specifications, isolation voltage, current transfer ratio, output ratings, and package dimensions. The primary difference is packaging format (tube vs. standard).

Q: What is the difference between SFH615A-2X and SFH617A-2X?

A: Both parts share the same isolation voltage (5300Vrms), output type (transistor), and package (4-DIP). The SFH617A-2X has different rise/fall time characteristics (4µs, 3µs vs. 3µs, 14µs) and does not specify turn-on/turn-off time. The base product number (SFH617 vs. SFH615) indicates a different device series.

Q: Are all three parts ROHS3 compliant?

A: Yes. SFH615A-2, SFH615A-2X, and SFH617A-2X are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes, all three parts use the same 4-DIP through-hole package with 0.300" (7.62mm) spacing and identical pin configurations. PCB layouts designed for one part accommodate all three without modification.

Q: Which part should I select for new designs?

A: For new designs, select based on current availability and supply chain requirements. SFH615A-2 has the highest inventory. SFH617A-2X offers higher availability as a secondary option. Both are active products with full compliance certifications.

Q: What is the isolation voltage rating for all substitute parts?

A: All three parts provide 5300Vrms isolation voltage, meeting the same high-voltage isolation requirements.

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