CNY17F2SD Optoisolator Equivalent & Substitute Parts

Part Overview

The CNY17F2SD is a 6-SMD surface mount optoisolator with transistor output manufactured by onsemi. This component provides 5300Vrms isolation voltage and is designed for single-channel DC input applications requiring galvanic isolation. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain compatibility across isolation voltage, output current capacity, and thermal operating range while accommodating different manufacturer specifications and packaging formats.

Key Parameters

Parameter	CNY17F2SD Value
Isolation Voltage	5300Vrms
Number of Channels	1
Output Type	Transistor
Current Transfer Ratio (Min)	63% @ 10mA
Current Transfer Ratio (Max)	125% @ 10mA
Maximum Output Current	50mA
Maximum Output Voltage	70V
Operating Temperature Range	-55°C to 100°C
Package Type	6-SMD, Gull Wing
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Primary Compatibility Criteria:

Single-channel transistor output configuration
6-SMD gull wing package format for surface mount assembly
Operating temperature range of -55°C to 100°C minimum
Maximum output voltage of 70V
Input type: DC

Isolation Voltage Grouping: Substitutes are grouped into two isolation voltage categories: 5000Vrms (Lite-On and Vishay parts) and 5300Vrms (Isocom parts). The CNY17F2SD operates at 5300Vrms. Parts rated at 5000Vrms provide lower isolation but remain within the same product family. Parts with significantly different isolation specifications (7.5Vpk) are included for reference but represent a different isolation class.

Current Transfer Ratio Considerations: The CNY17F2SD specifies 63-125% CTR @ 10mA. Substitute parts with 40-80% CTR represent lower transfer efficiency but maintain functional compatibility for applications not requiring the higher CTR specification. Parts with 63-125% CTR provide direct parameter matching.

Output Current Capacity: The CNY17F2SD supports 50mA maximum output current. Substitutes rated at 150mA provide enhanced current capability and are fully compatible. Parts rated at 50mA match the original specification exactly.

Parameter Comparison

Part Number	Manufacturer	Isolation Voltage	CTR Min @ 10mA	CTR Max @ 10mA	Output Current (Max)	Vce Sat (Max)	Operating Temp Range	Product Status
CNY17F2SD	onsemi	5300Vrms	63%	125%	50mA	300mV	-55°C to 100°C	Obsolete
CNY17F-1S	Lite-On Inc.	5000Vrms	40%	80%	150mA	300mV	-55°C to 100°C	Active
CNY17F-1S-TA	Lite-On Inc.	5000Vrms	40%	80%	150mA	300mV	-55°C to 100°C	Active
CNY17F-1S-TA1	Lite-On Inc.	5000Vrms	40%	80%	150mA	300mV	-55°C to 100°C	Active
CNY17F-1SMT&R	Isocom Components 2004 LTD	7.5Vpk	40%	80%	50mA	400mV	-55°C to 100°C	Active
CNY17F-1X007T	Vishay Semiconductor Opto Division	5000Vrms	40%	80%	50mA	400mV	-55°C to 110°C	Active
CNY17F-1X019	Vishay Semiconductor Opto Division	5000Vrms	40%	80%	50mA	400mV	-55°C to 110°C	Active
CNY17F-1XSM	Isocom Components 2004 LTD	5300Vrms	40%	80%	50mA	400mV	-55°C to 100°C	Active
CNY17F-1XSMT&R	Isocom Components 2004 LTD	7.5Vpk	40%	80%	50mA	400mV	-55°C to 100°C	Active
CNY17F-2S	Lite-On Inc.	5000Vrms	63%	125%	150mA	300mV	-55°C to 100°C	Active
CNY17F-2S-TA	Lite-On Inc.	5000Vrms	63%	125%	150mA	300mV	-55°C to 100°C	Active

Engineering Selection Recommendations

Direct Substitutes (Highest Compatibility): CNY17F-2S and CNY17F-2S-TA are the preferred substitutes. Both are manufactured by Lite-On Inc. and maintain the exact current transfer ratio specification (63-125% @ 10mA) as the CNY17F2SD. These parts operate at 5000Vrms isolation voltage, which is 300V lower than the original but remains within the CNY17 product family specification. Both parts are ROHS3 compliant and active in production. The CNY17F-2S is available in tube packaging, while CNY17F-2S-TA is available in tape and reel format. Output current capacity is enhanced to 150mA, providing additional design margin.

Alternative Substitutes (Functional Compatibility): CNY17F-1XSM (Isocom Components 2004 LTD) matches the original 5300Vrms isolation voltage specification exactly and maintains the 6-SMD gull wing package. This part is ROHS3 compliant and active. However, the current transfer ratio is reduced to 40-80% @ 10mA, and Vce saturation is increased to 400mV. This part is suitable for applications where the lower CTR specification is acceptable.

CNY17F-1X007T and CNY17F-1X019 (Vishay Semiconductor Opto Division) provide 5000Vrms isolation with extended operating temperature range to 110°C. Both are ROHS3 compliant and active. These parts maintain 50mA output current matching the original specification but feature 400mV Vce saturation and 40-80% CTR.

Packaging Considerations: Lite-On parts are available in both tube and tape & reel formats. Vishay parts are available in tube and tape & reel. Isocom parts are available in tube and tape & reel. Selection should align with assembly line requirements and inventory management practices.

Compliance Status: All substitute parts listed are ROHS3 compliant and REACH unaffected. All maintain the same ECCN (EAR99) and HTSUS classification as the original part.

Frequently Asked Questions (FAQ)

Q: Can CNY17F-1S replace CNY17F2SD directly? A: CNY17F-1S is functionally compatible but with parameter differences. It provides 5000Vrms isolation (300V lower), 40-80% CTR (lower than the original 63-125%), and 150mA output current (higher than the original 50mA). The part is suitable for applications where lower CTR is acceptable and higher output current provides design margin.

Q: What is the difference between CNY17F-2S and CNY17F-2S-TA? A: Both parts are electrically identical. CNY17F-2S is supplied in tube packaging, while CNY17F-2S-TA is supplied in tape and reel format. Selection depends on assembly process requirements and inventory management.

Q: Why do some substitutes have 7.5Vpk isolation instead of 5000Vrms or 5300Vrms? A: Parts with 7.5Vpk isolation (CNY17F-1SMT&R and CNY17F-1XSMT&R) represent a different isolation class and are included for reference. These parts are not recommended as direct substitutes for applications requiring 5000Vrms or higher isolation.

Q: Is CNY17F-1XSM a better choice than CNY17F-2S? A: CNY17F-1XSM matches the original 5300Vrms isolation voltage exactly and is ROHS3 compliant. However, CNY17F-2S provides superior current transfer ratio (63-125% vs 40-80%) and higher output current (150mA vs 50mA). Selection depends on whether isolation voltage matching or CTR specification is more critical for the application.

Q: Can I use CNY17F-1X007T or CNY17F-1X019 in place of CNY17F2SD? A: Yes, both Vishay parts are functionally compatible. They provide 5000Vrms isolation, 40-80% CTR, and 50mA output current. An advantage is the extended operating temperature range to 110°C. Vce saturation is 400mV compared to the original 300mV, which may affect switching performance in some applications.

Q: Are all substitute parts available in surface mount 6-SMD gull wing package? A: Yes, all listed substitute parts use the 6-SMD gull wing package format compatible with the original CNY17F2SD footprint. Packaging format (tube vs tape & reel) varies by manufacturer and part number variant.

Q: What compliance certifications apply to these substitute parts? A: All substitute parts are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes. All maintain the same HTSUS classification (8541.49.8000) as the original part.

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