H11A617CSD Optoisolator Equivalent & Substitute Parts

Part Overview

The H11A617CSD is an optoisolator with transistor output manufactured by onsemi, rated for 5300Vrms isolation voltage with 1 channel and 4-SMD surface mount packaging. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part delivers 50mA output current with a maximum output voltage of 70V and operates across the temperature range of -55°C to 100°C.

Key Parameters

Parameter	Value
Manufacturer Part Number	H11A617CSD
Manufacturer	onsemi
Category	Optoisolators
Product Status	Obsolete
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
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the H11A617CSD is determined by the following critical parameters:

Isolation Voltage: 5300Vrms minimum requirement
Number of Channels: Single channel (1)
Output Type: Transistor output configuration
Package / Case: 4-SMD, Gull Wing surface mount
Current - Output / Channel: 50mA capability
Voltage - Output (Max): 70V maximum
Vce Saturation (Max): 400mV maximum
Operating Temperature Range: Must support -55°C to 100°C or equivalent operational envelope
Input Type: DC input

Substitute parts are grouped into two categories: direct equivalents meeting all primary electrical specifications, and similar parts with compatible electrical characteristics within the defined parameter ranges. All substitute candidates maintain the same 4-SMD gull wing package configuration and support the required isolation voltage and output current specifications.

Parameter Comparison

Parameter	H11A617CSD (onsemi)	SFH6156-3T (Vishay)	SFH615A-2XSMT&R (Isocom)	SFH615A-3XSMT&R (Isocom)	SFH615A-4XSM (Isocom)	SFH615A-4XSMT&R (Isocom)	SFH617A-2XSMT&R (Isocom)	SFH617A-3XSMT&R (Isocom)
Manufacturer	onsemi	Vishay Semiconductor Opto Division	Isocom Components 2004 LTD	Isocom Components 2004 LTD	Isocom Components 2004 LTD	Isocom Components 2004 LTD	Isocom Components 2004 LTD	Isocom Components 2004 LTD
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Number of Channels	1	1	1	1	1	1	1	1
Voltage - Isolation	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	5300Vrms	7.5Vpk	7.5Vpk
Current Transfer Ratio (Min)	100% @ 10mA	100% @ 10mA	63% @ 10mA	100% @ 10mA	160% @ 10mA	160% @ 10mA	63% @ 10mA	100% @ 10mA
Current Transfer Ratio (Max)	200% @ 10mA	200% @ 10mA	125% @ 10mA	200% @ 10mA	320% @ 10mA	320% @ 10mA	125% @ 10mA	200% @ 10mA
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor
Voltage - Output (Max)	70V	70V	70V	70V	70V	70V	70V	70V
Current - Output / Channel	50mA	50mA	50mA	50mA	50mA	50mA	50mA	50mA
Vce Saturation (Max)	400mV	400mV	400mV	400mV	400mV	400mV	400mV	400mV
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-30°C ~ 100°C	-30°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
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
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

Primary Substitute - Direct Equivalent:

SFH6156-3T (Vishay Semiconductor Opto Division) is the direct equivalent substitute for H11A617CSD. This part maintains identical isolation voltage (5300Vrms), current transfer ratio range (100-200% @ 10mA), output specifications (70V max, 50mA), and operating temperature range (-55°C to 100°C). The SFH6156-3T carries Active product status and ROHS3 compliance, providing long-term availability and regulatory alignment. Inventory availability is substantial at 38,200 pieces.

Secondary Substitutes - Compatible Alternatives:

SFH615A-3XSMT&R and SFH617A-3XSMT&R (Isocom Components 2004 LTD) provide compatible substitution with matching current transfer ratio specifications (100-200% @ 10mA). Both maintain the required 70V output voltage and 50mA current capability. Operating temperature range is -30°C to 100°C, which covers the upper operational envelope of the original part. Both are ROHS3 compliant and carry Active product status.

SFH615A-4XSM and SFH615A-4XSMT&R (Isocom Components 2004 LTD) offer higher current transfer ratio performance (160-320% @ 10mA) while maintaining all critical electrical parameters. These parts are suitable for applications where enhanced transfer efficiency is beneficial. Both are ROHS3 compliant with Active status.

Limited Compatibility:

SFH615A-2XSMT&R and SFH617A-2XSMT&R (Isocom Components 2004 LTD) feature lower current transfer ratio minimums (63% @ 10mA) compared to the H11A617CSD specification (100% @ 10mA). These parts are suitable only for applications where the lower transfer ratio range is acceptable.

All substitute parts maintain the 4-SMD gull wing package configuration, ensuring mechanical compatibility with existing PCB layouts and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can SFH6156-3T directly replace H11A617CSD in production?

A: Yes. SFH6156-3T is a direct equivalent meeting all electrical specifications including 5300Vrms isolation, 100-200% current transfer ratio, 70V output voltage, 50mA output current, and -55°C to 100°C operating temperature. Package configuration (4-SMD gull wing) is identical. The part is in Active status with established supply chain availability.

Q: What is the difference between SFH615A and SFH617A series substitutes?

A: SFH615A series maintains 5300Vrms isolation voltage matching the original H11A617CSD specification. SFH617A series operates at 7.5Vpk isolation voltage, which is significantly lower. SFH617A variants are suitable only for applications where reduced isolation voltage is acceptable.

Q: Why do some substitutes have different operating temperature ranges?

A: The H11A617CSD operates from -55°C to 100°C. Most Isocom substitutes operate from -30°C to 100°C, covering the upper temperature range but not the lower extreme. Applications requiring operation below -30°C must use SFH6156-3T (Vishay), which maintains the full -55°C to 100°C range.

Q: Are all substitute parts RoHS compliant?

A: All listed substitute parts carry ROHS3 compliance certification. The original H11A617CSD does not specify RoHS status. All substitutes and the original part are REACH Unaffected.

Q: What packaging options are available for substitutes?

A: All substitute parts maintain the 4-SMD gull wing surface mount package configuration. Packaging formats vary by supplier: SFH6156-3T is available in Cut Tape and Digi-Reel; SFH615A and SFH617A variants are available in Tape & Reel or Tube formats. Verify packaging selection matches assembly requirements.

Q: Which substitute offers the best current transfer ratio performance?

A: SFH615A-4XSM and SFH615A-4XSMT&R provide the highest current transfer ratio range (160-320% @ 10mA) while maintaining all other electrical specifications. These parts deliver enhanced transfer efficiency for applications where higher gain is beneficial.

Q: Can substitutes be used interchangeably on the same PCB?

A: All substitute parts share identical 4-SMD gull wing package geometry and pin configuration, enabling direct PCB-level substitution. Electrical parameter differences (current transfer ratio, isolation voltage, temperature range) must be evaluated against application requirements before implementation.

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