CNY17-1S-TA Optoisolator Equivalent & Substitute Parts

Part Overview

The CNY17-1S-TA is an optoisolator transistor with base output manufactured by Lite-On Inc., designed for 5000Vrms isolation applications. This single-channel device features a 6-SMD surface mount package and is classified as Active product status. The CNY17-1S-TA remains in production; however, equivalent and substitute parts from alternative manufacturers provide options for supply chain flexibility, extended lead times, or specific performance requirements within the CNY17 optoisolator family.

Key Parameters

Parameter	CNY17-1S-TA Value
Manufacturer	Lite-On Inc.
Voltage - Isolation	5000Vrms
Number of Channels	1
Current Transfer Ratio (Min)	40% @ 10mA
Current Transfer Ratio (Max)	80% @ 10mA
Output Type	Transistor with Base
Voltage - Output (Max)	70V
Current - Output / Channel	150mA
Vce Saturation (Max)	300mV
Operating Temperature	-55°C ~ 100°C
Mounting Type	Surface Mount
Package / Case	6-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CNY17-1S-TA is determined by the following critical parameters:

Isolation Voltage: Minimum 5000Vrms (higher isolation ratings are acceptable)
Number of Channels: Must be 1 channel
Output Type: Must be Transistor with Base
Mounting Type: Surface Mount only
Package / Case: 6-SMD, Gull Wing configuration
Input Type: DC input
Operating Temperature Range: Must encompass or exceed -55°C to 100°C
RoHS Compliance: ROHS3 Compliant
MSL Rating: 1 (Unlimited)

Substitute parts are grouped into two categories based on Current Transfer Ratio performance:

Group A (CTR 40-80% @ 10mA): Direct functional equivalents with identical CTR specifications.

Group B (CTR 100-200% @ 10mA): Higher CTR performance variants suitable for applications requiring improved current transfer efficiency.

Group C (CTR 160-320% @ 10mA): Enhanced CTR performance for demanding isolation and switching applications.

All substitute parts maintain the same isolation voltage class, package configuration, and compliance certifications as the CNY17-1S-TA.

Parameter Comparison

Part Number	Manufacturer	Isolation Voltage	CTR Min @ 10mA	CTR Max @ 10mA	Output (Max)	Current / Channel	Vce Sat (Max)	Temp Range	Package
CNY17-1S-TA	Lite-On Inc.	5000Vrms	40%	80%	70V	150mA	300mV	-55°C ~ 100°C	6-SMD
CNY17-2XSM	Isocom Components 2004 LTD	5300Vrms	63%	125%	70V	50mA	400mV	-55°C ~ 100°C	6-SMD
CNY17-3-360E	Broadcom Limited	5000Vrms	100%	200%	70V	150mA	300mV	-55°C ~ 100°C	6-SMD
CNY17-3-500E	Broadcom Limited	5000Vrms	100%	200%	70V	150mA	300mV	-55°C ~ 100°C	6-SMD
CNY17-3S(TA)-V	Everlight Electronics Co Ltd	5000Vrms	100%	200%	80V	—	300mV	-55°C ~ 110°C	6-SMD
CNY17-3X009	Vishay Semiconductor Opto Division	5000Vrms	100%	200%	70V	50mA	400mV	-55°C ~ 110°C	6-SMD
CNY17-3X009T	Vishay Semiconductor Opto Division	5000Vrms	100%	200%	70V	50mA	400mV	-55°C ~ 110°C	6-SMD
CNY17-3XSM	Isocom Components 2004 LTD	5300Vrms	100%	200%	70V	50mA	400mV	-55°C ~ 100°C	6-SMD
CNY17-3XSMT&R	Isocom Components 2004 LTD	5300Vrms	100%	200%	70V	50mA	400mV	-55°C ~ 100°C	6-SMD
CNY17-4-500E	Broadcom Limited	5000Vrms	160%	320%	70V	150mA	300mV	-55°C ~ 100°C	6-SMD
CNY17-4X009T	Vishay Semiconductor Opto Division	5000Vrms	160%	320%	70V	50mA	400mV	-55°C ~ 110°C	6-SMD

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory conformance equivalent to the CNY17-1S-TA.

For direct functional replacement with identical CTR performance (40-80% @ 10mA): No substitute parts in the provided list match the CNY17-1S-TA CTR specification exactly. The CNY17-2XSM provides the closest lower-tier CTR performance at 63-125% @ 10mA with enhanced isolation voltage (5300Vrms).

For applications tolerating higher CTR (100-200% @ 10mA): CNY17-3-360E, CNY17-3-500E, CNY17-3S(TA)-V, CNY17-3X009, CNY17-3X009T, CNY17-3XSM, and CNY17-3XSMT&R are functionally compatible. These parts offer improved current transfer efficiency and maintain 5000Vrms isolation or higher. CNY17-3S(TA)-V extends the operating temperature range to 110°C and provides 80V maximum output voltage.

For applications requiring maximum CTR performance (160-320% @ 10mA): CNY17-4-500E and CNY17-4X009T deliver the highest current transfer ratios while maintaining 5000Vrms isolation, 150mA output current capability, and 300mV Vce saturation. CNY17-4X009T extends operating temperature to 110°C.

Packaging considerations: CNY17-3-500E, CNY17-3XSMT&R, CNY17-4-500E, and CNY17-4X009T are supplied in Tape & Reel (TR) format for automated assembly. Tube packaging is available for CNY17-2XSM, CNY17-3X009, CNY17-3XSM, and other variants.

Frequently Asked Questions (FAQ)

Q: Can CNY17-1S-TA be replaced with CNY17-3-360E or CNY17-3-500E?

A: Yes, both parts are functionally compatible substitutes. They maintain identical 5000Vrms isolation voltage, 70V maximum output, 150mA output current, and 300mV Vce saturation. The primary difference is higher Current Transfer Ratio (100-200% vs. 40-80%), which improves switching performance and noise margin in isolation circuits. Both are ROHS3 compliant with MSL 1 rating.

Q: What is the difference between CNY17-3X009 and CNY17-3X009T?

A: Both parts are manufactured by Vishay Semiconductor Opto Division with identical electrical specifications. CNY17-3X009T is supplied in Tape & Reel (TR) packaging for high-volume automated assembly, while CNY17-3X009 is supplied in Tube packaging. Electrical performance and compliance are equivalent.

Q: Are Isocom CNY17-2XSM and CNY17-3XSM interchangeable with Lite-On CNY17-1S-TA?

A: Both Isocom parts are compatible substitutes with the same 6-SMD package and surface mount configuration. CNY17-2XSM and CNY17-3XSM feature enhanced isolation voltage (5300Vrms vs. 5000Vrms) and higher CTR performance. Output current is reduced to 50mA compared to 150mA on the CNY17-1S-TA, which may limit applications requiring higher output drive capability.

Q: Does CNY17-3S(TA)-V from Everlight offer advantages over the original CNY17-1S-TA?

A: CNY17-3S(TA)-V provides three advantages: extended operating temperature range (-55°C to 110°C vs. -55°C to 100°C), higher maximum output voltage (80V vs. 70V), and improved CTR performance (100-200% vs. 40-80%). It maintains identical 5000Vrms isolation and 300mV Vce saturation. Current output specification is not provided for this variant.

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

A: CNY17-4-500E and CNY17-4X009T deliver the highest CTR performance at 160-320% @ 10mA. Both maintain 5000Vrms isolation, 70V output voltage, and 300mV Vce saturation. CNY17-4X009T extends operating temperature to 110°C and is available in Tape & Reel packaging.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the CNY17-1S-TA compliance profile.

Q: What packaging options are available for high-volume production?

A: Tape & Reel (TR) packaging is available for CNY17-3-500E, CNY17-3XSMT&R, CNY17-4-500E, and CNY17-4X009T. Tube packaging is available for CNY17-2XSM, CNY17-3X009, and CNY17-3XSM. CNY17-3-360E and CNY17-3S(TA)-V are supplied in Tube and Tape & Reel formats respectively.

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