CNY17-2S(TA)-V Equivalent & Substitute Parts

Part Overview

The CNY17-2S(TA)-V is an optoisolator transistor with base output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation with a single channel configuration in a 6-SMD surface mount package. The part is currently active in production with 874 units in stock.

Equivalent and substitute parts are identified based on matching isolation voltage, channel configuration, output type, package format, and electrical performance parameters. Alternative models from the CNY17 series provide functionally compatible solutions with variations in current transfer ratio specifications and packaging options.

Key Parameters

Parameter	CNY17-2S(TA)-V
Isolation Voltage	5000Vrms
Number of Channels	1
Output Type	Transistor with Base
Current Transfer Ratio (Min)	63% @ 10mA
Current Transfer Ratio (Max)	125% @ 10mA
Voltage - Output (Max)	80V
Vce Saturation (Max)	300mV
Operating Temperature Range	-55°C ~ 110°C
Package / Case	6-SMD, Gull Wing
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts within the CNY17 series are classified based on current transfer ratio performance bands. The CNY17-2S(TA)-V operates in the mid-range CTR specification (63% to 125% @ 10mA). Substitution compatibility is determined by the following criteria:

Primary Substitution Criteria:

Isolation voltage: 5000Vrms (all candidates match)
Number of channels: 1 (all candidates match)
Output type: Transistor with Base (all candidates match)
Package format: 6-SMD, Gull Wing (all candidates match)
Input type: DC (all candidates match)
Mounting type: Surface Mount (all candidates match)

Secondary Performance Variations:

Current Transfer Ratio ranges differ across variants
Maximum output voltage: CNY17-2S(TA)-V supports 80V; substitute parts support 70V
Operating temperature upper limit: CNY17-2S(TA)-V supports 110°C; substitute parts support 100°C
Packaging format: Tape & Reel (TR) versus Tube

The following parts are functionally equivalent with noted parameter differences:

CNY17-1S (Lite-On Inc.): Lower CTR band (40% to 80% @ 10mA) CNY17-3S / CNY17-3S-TA / CNY17-3S-TA1 (Lite-On Inc.): Mid-high CTR band (100% to 200% @ 10mA) CNY17-4S / CNY17-4S-TA1 (Lite-On Inc.): High CTR band (160% to 320% @ 10mA)

Parameter Comparison

Parameter	CNY17-2S(TA)-V	CNY17-1S	CNY17-3S	CNY17-3S-TA	CNY17-3S-TA1	CNY17-4S	CNY17-4S-TA1
Manufacturer	Everlight Electronics	Lite-On Inc.	Lite-On Inc.	Lite-On Inc.	Lite-On Inc.	Lite-On Inc.	Lite-On Inc.
Isolation Voltage	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms	5000Vrms
Number of Channels	1	1	1	1	1	1	1
CTR Min @ 10mA	63%	40%	100%	100%	100%	160%	160%
CTR Max @ 10mA	125%	80%	200%	200%	200%	320%	320%
Voltage - Output (Max)	80V	70V	70V	70V	70V	70V	70V
Vce Saturation (Max)	300mV	300mV	300mV	300mV	300mV	300mV	300mV
Operating Temperature	-55°C ~ 110°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
Package / Case	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing
Packaging Format	Tape & Reel (TR)	Tube	Tube	Tape & Reel (TR)	Tape & Reel (TR)	Tube	Tape & Reel (TR)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Direct Substitution (Tape & Reel Packaging):

CNY17-3S-TA and CNY17-3S-TA1 are direct substitutes for CNY17-2S(TA)-V when packaging format (Tape & Reel) is required. Both parts maintain identical isolation voltage, channel configuration, output type, and package specifications. The primary difference is current transfer ratio performance: CNY17-3S variants operate at 100% to 200% CTR compared to the 63% to 125% CTR of the CNY17-2S(TA)-V. Both substitute parts are ROHS3 compliant and carry unlimited moisture sensitivity rating.

Alternative Substitutes (Tube Packaging):

CNY17-1S, CNY17-3S, and CNY17-4S are functionally equivalent alternatives supplied in Tube packaging. These parts share identical isolation voltage, channel count, and output type specifications. Selection among these variants depends on current transfer ratio requirements for the application circuit.

Parameter Deviations Requiring Circuit Evaluation:

All Lite-On substitute parts operate at a maximum output voltage of 70V compared to the CNY17-2S(TA)-V specification of 80V. Applications requiring output voltages above 70V cannot use these substitutes.

All Lite-On substitute parts support an operating temperature range of -55°C to 100°C compared to the CNY17-2S(TA)-V range of -55°C to 110°C. Applications requiring operation above 100°C cannot use these substitutes.

Compliance Status:

All listed substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), matching the environmental and regulatory status of the CNY17-2S(TA)-V.

Frequently Asked Questions (FAQ)

Q: Can CNY17-3S-TA1 replace CNY17-2S(TA)-V in a production assembly?

A: CNY17-3S-TA1 is a direct substitute for CNY17-2S(TA)-V when the application circuit operates within the following constraints: output voltage requirement ≤70V, operating temperature range ≤100°C, and current transfer ratio tolerance accommodates the 100% to 200% specification band. Both parts are supplied in Tape & Reel format and share identical isolation voltage, channel configuration, and package specifications.

Q: What is the difference between CNY17-3S and CNY17-3S-TA?

A: CNY17-3S and CNY17-3S-TA are electrically identical optoisolators with identical electrical specifications. The difference is packaging format: CNY17-3S is supplied in Tube packaging, while CNY17-3S-TA is supplied in Tape & Reel (TR) format. Selection depends on assembly process requirements and inventory management practices.

Q: Why does CNY17-2S(TA)-V support 80V output while substitute parts support only 70V?

A: The maximum output voltage specification is a component design parameter that differs between the Everlight CNY17-2S(TA)-V and the Lite-On CNY17 series variants. Applications requiring output voltages between 70V and 80V must use the original CNY17-2S(TA)-V part number.

Q: Are all CNY17 series parts ROHS3 compliant?

A: All listed parts including CNY17-2S(TA)-V and all substitute variants (CNY17-1S, CNY17-3S, CNY17-3S-TA, CNY17-3S-TA1, CNY17-4S, CNY17-4S-TA1) are ROHS3 compliant.

Q: What is the significance of current transfer ratio (CTR) differences between variants?

A: Current transfer ratio determines the output current magnitude relative to input current. CNY17-1S operates at 40% to 80% CTR, CNY17-3S variants at 100% to 200% CTR, and CNY17-4S variants at 160% to 320% CTR. Circuit design must account for these performance bands to ensure proper signal transmission and switching characteristics.

Q: Can CNY17-4S-TA1 be used in place of CNY17-2S(TA)-V?

A: CNY17-4S-TA1 is functionally compatible with CNY17-2S(TA)-V for applications where the higher current transfer ratio (160% to 320% @ 10mA) does not cause circuit malfunction. The substitute part maintains identical isolation voltage, channel configuration, package format (Tape & Reel), and compliance status. Output voltage and operating temperature constraints apply as noted in the parameter comparison table.

Q: What inventory levels are available for substitute parts?

A: CNY17-3S-TA1 has 25,200 units in stock, CNY17-4S-TA1 has 26,600 units in stock, CNY17-3S-TA has 21,448 units in stock, CNY17-4S has 3,741 units in stock, CNY17-3S has 8,562 units in stock, and CNY17-1S has 2,380 units in stock. The original CNY17-2S(TA)-V has 874 units in stock.

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