CNY17-3S(TB) Optoisolator Equivalent & Substitute Parts

Part Overview

The CNY17-3S(TB) is a 5000Vrms optoisolator transistor with base output manufactured by Everlight Electronics Co Ltd. This single-channel optoisolator operates in DC input mode with transistor output configuration, housed in a 6-SMD surface mount package. The component is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are necessary when the CNY17-3S(TB) is unavailable or when alternative packaging formats (Tape & Reel, Tube, or Cut Tape) are required for production workflows. Vishay Semiconductor Opto Division manufactures compatible alternatives within the CNY17 series that maintain electrical equivalence across critical isolation and switching parameters.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Voltage - Isolation	5000	Vrms	Critical - Must match exactly
Number of Channels	1	Channel	Critical - Must match exactly
Output Type	Transistor with Base	-	Critical - Must match exactly
Current Transfer Ratio (Min)	100	% @ 10mA	Functional - Determines switching performance
Current Transfer Ratio (Max)	200	% @ 10mA	Functional - Determines switching performance
Voltage - Output (Max)	80	V	Functional - Output voltage rating
Vce Saturation (Max)	300	mV	Functional - Output saturation voltage
Operating Temperature	-55 to 110	°C	Functional - Temperature range
Package / Case	6-SMD, Gull Wing	-	Critical - Physical compatibility
Mounting Type	Surface Mount	-	Critical - Assembly method
RoHS Status	ROHS3 Compliant	-	Compliance - Environmental regulation

Substitute Part Grouping Explanation

Substitution logic for the CNY17-3S(TB) is based on the following mandatory electrical and mechanical parameters:

Critical Matching Parameters (Non-negotiable):

Voltage - Isolation: 5000Vrms
Number of Channels: 1
Output Type: Transistor with Base
Package / Case: 6-SMD, Gull Wing
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Functional Performance Parameters (Allow variation within specified ranges):

Current Transfer Ratio (Min/Max): Determines switching speed and efficiency
Voltage - Output (Max): Output voltage capability
Vce Saturation (Max): Output saturation characteristics
Operating Temperature: -55°C to 110°C (all substitutes match)

All substitute parts listed are manufactured by Vishay Semiconductor Opto Division and share the CNY17 base product number. Substitutes differ primarily in Current Transfer Ratio specifications and packaging format (Tape & Reel, Tube, or Cut Tape). The CNY17-3S(TB) features a Current Transfer Ratio of 100-200% @ 10mA, which is matched by CNY17-3X007, CNY17-3X007T, CNY17-3X017, and CNY17-3X017T variants.

Parameter Comparison

Part Number	Manufacturer	Isolation Voltage (Vrms)	CTR Min (% @ 10mA)	CTR Max (% @ 10mA)	Vce Sat Max (mV)	Vout Max (V)	Packaging	Inventory (Pcs)
CNY17-3S(TB)	Everlight Electronics	5000	100	200	300	80	6-SMD	906
CNY17-1X007T	Vishay Semiconductor	5000	40	80	400	70	6-SMD	12660
CNY17-2X007T	Vishay Semiconductor	5000	63	125	400	70	6-SMD	2052
CNY17-2X017T	Vishay Semiconductor	5000	63	125	400	70	6-SMD	8400
CNY17-3X007	Vishay Semiconductor	5000	100	200	400	70	6-SMD	2262
CNY17-3X007T	Vishay Semiconductor	5000	100	200	400	70	6-SMD	3480
CNY17-3X017	Vishay Semiconductor	5000	100	200	400	70	6-SMD	4190
CNY17-3X017T	Vishay Semiconductor	5000	100	200	400	70	6-SMD	1637
CNY17-4X007T	Vishay Semiconductor	5000	160	320	400	70	6-SMD	35400

Engineering Selection Recommendations

Direct Electrical Equivalents (Recommended Primary Substitutes):

CNY17-3X007, CNY17-3X007T, CNY17-3X017, and CNY17-3X017T are direct electrical equivalents to the CNY17-3S(TB). These parts maintain identical Current Transfer Ratio specifications (100-200% @ 10mA) and are manufactured by Vishay Semiconductor Opto Division with ROHS3 compliance. Selection among these four variants depends on packaging format requirements:

CNY17-3X007T and CNY17-3X017T: Tape & Reel (TR) packaging for automated assembly
CNY17-3X007 and CNY17-3X017: Tube packaging for manual or semi-automated processes

Secondary Substitutes (Functional Alternatives):

CNY17-2X007T and CNY17-2X017T feature lower Current Transfer Ratio (63-125% @ 10mA) and are suitable for applications where reduced switching gain is acceptable. These parts maintain 5000Vrms isolation and 6-SMD package compatibility.

CNY17-1X007T features the lowest Current Transfer Ratio (40-80% @ 10mA) and is suitable only for applications with minimal switching gain requirements.

CNY17-4X007T features the highest Current Transfer Ratio (160-320% @ 10mA) and is suitable for applications requiring enhanced switching performance.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the CNY17-3S(TB) environmental specifications. All parts are classified as Active product status.

Frequently Asked Questions (FAQ)

Q: Can CNY17-3X007T directly replace CNY17-3S(TB) in production?

A: Yes. CNY17-3X007T is electrically equivalent with identical Current Transfer Ratio (100-200% @ 10mA), isolation voltage (5000Vrms), and 6-SMD package configuration. The primary difference is packaging format (Tape & Reel vs. standard SMD). Both are ROHS3 compliant with unlimited moisture sensitivity.

Q: What is the difference between CNY17-3X007 and CNY17-3X007T?

A: Both parts are electrically identical with 100-200% Current Transfer Ratio. The difference is packaging format: CNY17-3X007 is supplied in Tube packaging, while CNY17-3X007T is supplied in Tape & Reel (TR) format. Selection depends on assembly process requirements.

Q: Can I use CNY17-4X007T as a substitute for CNY17-3S(TB)?

A: CNY17-4X007T maintains 5000Vrms isolation and 6-SMD package compatibility but features higher Current Transfer Ratio (160-320% @ 10mA) compared to the CNY17-3S(TB) (100-200% @ 10mA). This part is suitable only if the application circuit design accommodates higher switching gain.

Q: What are the key parameters that must match for substitution?

A: Critical matching parameters are: Voltage - Isolation (5000Vrms), Number of Channels (1), Output Type (Transistor with Base), Package / Case (6-SMD, Gull Wing), Mounting Type (Surface Mount), and RoHS Status (ROHS3 Compliant). Current Transfer Ratio, output voltage, and saturation voltage may vary within functional limits depending on circuit requirements.

Q: Are all substitute parts from the same manufacturer?

A: No. The CNY17-3S(TB) is manufactured by Everlight Electronics Co Ltd. All listed substitutes are manufactured by Vishay Semiconductor Opto Division. Both manufacturers produce optoisolators within the CNY17 series with equivalent electrical specifications.

Q: What is the difference between CNY17-2X007T and CNY17-2X017T?

A: Both parts are electrically identical with 63-125% Current Transfer Ratio and identical electrical specifications. The difference is in the specific product variant designation (X007 vs. X017), which may relate to internal manufacturing or binning specifications. Functionally, they are interchangeable.

Q: Can I substitute a lower CTR part like CNY17-1X007T for the CNY17-3S(TB)?

A: CNY17-1X007T features lower Current Transfer Ratio (40-80% @ 10mA) and is not recommended as a direct substitute for CNY17-3S(TB) (100-200% @ 10mA). Use only if circuit design explicitly accommodates reduced switching gain and slower response characteristics.

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