CNY17-4S(TA)-V Optoisolator Equivalent & Substitute Parts

Part Overview

The CNY17-4S(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 826 units in stock.

Equivalent and substitute parts are necessary when the primary part number becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when sourcing from multiple suppliers is required for supply chain resilience. The CNY17 series from Lite-On Inc. provides compatible alternatives with matching isolation voltage, channel configuration, and output type specifications.

Substiute Parts

CNY17-4S(TA)-V

Everlight Electronics Co LtdIn Stock: 914CNY17-4S(TA)-V Datasheet

Current PartRFQ

CNY17-1S

Lite-On Inc.In Stock: 2438CNY17-1S Datasheet

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CNY17-3S

Lite-On Inc.In Stock: 8636CNY17-3S Datasheet

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CNY17-3S-TA

Lite-On Inc.In Stock: 21490CNY17-3S-TA Datasheet

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CNY17-3S-TA1

Lite-On Inc.In Stock: 25223CNY17-3S-TA1 Datasheet

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CNY17-4S

Lite-On Inc.In Stock: 3802CNY17-4S Datasheet

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CNY17-4S-TA1

Lite-On Inc.In Stock: 26690CNY17-4S-TA1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CNY17-4S(TA)-V is determined by the following critical parameters:

Primary Substitution Criteria:

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

Secondary Compatibility Parameters:

• Current Transfer Ratio range compatibility
• Maximum output voltage capability
• Vce saturation characteristics
• Operating temperature range overlap
• RoHS and MSL compliance

The CNY17-4S(TA)-V from Everlight Electronics is functionally equivalent to the CNY17 series optoisolators from Lite-On Inc. All substitute parts listed maintain the core isolation voltage, channel count, output configuration, and physical package specifications. Differences exist in Current Transfer Ratio ranges, maximum output voltage ratings, and operating temperature upper limits, which must be evaluated against specific circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Highest Compatibility):

CNY17-4S-TA1 and CNY17-4S from Lite-On Inc. are direct functional equivalents to the CNY17-4S(TA)-V. Both parts maintain identical Current Transfer Ratio specifications (160% / 320% @ 10mA), matching the performance characteristics of the Everlight part. The CNY17-4S-TA1 is available in Tape & Reel packaging format, identical to the primary part. The CNY17-4S is available in Tube packaging. Both are ROHS3 compliant with MSL 1 rating.

Secondary Equivalents (Conditional Compatibility):

CNY17-3S-TA1 and CNY17-3S-TA from Lite-On Inc. provide substitution capability with reduced Current Transfer Ratio specifications (100% / 200% @ 10mA). These parts are suitable for applications where the lower CTR range is acceptable. CNY17-3S-TA1 is available in Tape & Reel format with 25,200 units in stock. CNY17-3S-TA is available in Tape & Reel format with 21,448 units in stock. Both maintain full compliance with RoHS3 and MSL 1 requirements.

Limited Equivalents (Restricted Application):

CNY17-1S from Lite-On Inc. provides the lowest Current Transfer Ratio range (40% / 80% @ 10mA) and is suitable only for applications with relaxed CTR requirements. This part is available in Tube packaging with 2,380 units in stock.

Temperature Range Consideration:

The CNY17-4S(TA)-V operates to 110°C maximum. All Lite-On substitute parts operate to 100°C maximum. Applications requiring operation above 100°C cannot use Lite-On substitutes.

Output Voltage Consideration:

The CNY17-4S(TA)-V supports 80V maximum output voltage. All Lite-On substitute parts support 70V maximum output voltage. Applications requiring output voltage above 70V cannot use Lite-On substitutes.

Frequently Asked Questions (FAQ)

Q: Can CNY17-3S-TA1 be used as a direct replacement for CNY17-4S(TA)-V?

A: CNY17-3S-TA1 is functionally compatible for applications where the Current Transfer Ratio range of 100% / 200% @ 10mA is acceptable. The CNY17-4S(TA)-V specifies 160% / 320% @ 10mA. If circuit design requires the higher CTR range, CNY17-3S-TA1 is not suitable. All other electrical and physical parameters are compatible.

Q: What is the difference between Tape & Reel and Tube packaging?

A: Tape & Reel (TR) packaging is used for automated pick-and-place assembly processes. Tube packaging is used for manual assembly or lower-volume production. Both formats contain identical components. The CNY17-4S(TA)-V is supplied in Tape & Reel format. Equivalent Tape & Reel options include CNY17-3S-TA1, CNY17-3S-TA, and CNY17-4S-TA1.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (CNY17-1S, CNY17-3S, CNY17-3S-TA, CNY17-3S-TA1, CNY17-4S, CNY17-4S-TA1) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). The primary part CNY17-4S(TA)-V is also ROHS3 compliant with MSL 1.

Q: Which substitute part has the highest inventory availability?

A: CNY17-3S-TA1 has the highest inventory with 25,200 units in stock, followed by CNY17-3S-TA with 21,448 units. CNY17-4S-TA1 has 26,600 units available. For Tape & Reel packaging specifically, CNY17-4S-TA1 (26,600 units) and CNY17-3S-TA1 (25,200 units) offer the best availability.

Q: What is the significance of the Current Transfer Ratio (CTR) parameter?

A: Current Transfer Ratio defines the ratio of output collector current to input LED current. Higher CTR values indicate greater optical coupling efficiency. The CNY17-4S(TA)-V with 160% / 320% CTR provides stronger signal transfer compared to CNY17-3S variants with 100% / 200% CTR. Circuit design must account for the specific CTR range to ensure proper switching and signal integrity.

Q: Can CNY17-4S(TA)-V be used in applications requiring operation above 100°C?

A: Yes. The CNY17-4S(TA)-V operates to 110°C maximum. All Lite-On substitute parts operate to 100°C maximum. For applications requiring operation between 100°C and 110°C, only the Everlight CNY17-4S(TA)-V is suitable.

Q: Are there differences in turn-on and turn-off times between the main part and substitutes?

A: The CNY17-4S(TA)-V specifies typical turn-on and turn-off times of 10µs and 9µs respectively. Rise and fall times are specified as 6µs and 8µs. Lite-On substitute parts do not provide turn-on and turn-off time specifications but specify rise and fall times of 5µs and 5µs. For applications with strict timing requirements, these differences must be evaluated against circuit specifications.