CNY17-2X019T Optoisolator Equivalent & Substitute Parts

Part Overview

The CNY17-2X019T is an optoisolator transistor with base output manufactured by Vishay Semiconductor Opto Division. This 5000Vrms isolation component operates as a single-channel optoisolator in a 6-SMD surface mount package. The part is active and in production, with 704 units currently in stock. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, lead time considerations, or design flexibility needs.

Key Parameters

Parameter	Value
Voltage - Isolation	5000Vrms
Number of Channels	1
Current Transfer Ratio (Min)	63% @ 10mA
Current Transfer Ratio (Max)	125% @ 10mA
Output Type	Transistor with Base
Voltage - Output (Max)	70V
Current - Output / Channel	50mA
Vce Saturation (Max)	400mV
Operating Temperature	-55°C ~ 110°C
Package / Case	6-SMD, Gull Wing
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the CNY17-2X019T are classified into two categories based on electrical parameter alignment:

Parametric Equivalents (Vishay Semiconductor Opto Division): CNY17-2X007T and CNY17-2X017T maintain identical electrical specifications to the main part, including Current Transfer Ratio (63-125% @ 10mA), Vce Saturation (400mV), and output current rating (50mA). These parts differ only in internal design variants and are direct functional replacements.

Manufacturer Recommended Alternatives (Lite-On Inc. and Broadcom Limited): CNY17-1S, CNY17-3-360E, CNY17-3S, CNY17-3S-TA, CNY17-3S-TA1, CNY17-4S, and CNY17-4S-TA1 share the same isolation voltage (5000Vrms), package type (6-SMD, Gull Wing), and output configuration (Transistor with Base). These alternatives differ in Current Transfer Ratio ranges and maximum output current (150mA vs. 50mA), requiring design verification for applications sensitive to these parameters.

Substitution eligibility is determined by:

Voltage - Isolation: 5000Vrms (mandatory match)
Output Type: Transistor with Base (mandatory match)
Package / Case: 6-SMD, Gull Wing (mandatory match)
Operating Temperature Range: -55°C minimum and 110°C maximum coverage (mandatory match)
Current Transfer Ratio and output current: Application-dependent tolerance

Parameter Comparison

Part Number	Manufacturer	CTR Min @ 10mA	CTR Max @ 10mA	Current - Output / Channel	Vce Saturation (Max)	Operating Temp	Packaging	Inventory
CNY17-2X019T	Vishay	63%	125%	50mA	400mV	-55°C ~ 110°C	Tape & Reel	704 Pcs
CNY17-2X007T	Vishay	63%	125%	50mA	400mV	-55°C ~ 110°C	Tape & Reel	2052 Pcs
CNY17-2X017T	Vishay	63%	125%	50mA	400mV	-55°C ~ 110°C	Tape & Reel	8400 Pcs
CNY17-1S	Lite-On	40%	80%	150mA	300mV	-55°C ~ 100°C	Tube	2380 Pcs
CNY17-3-360E	Broadcom	100%	200%	150mA	300mV	-55°C ~ 100°C	Tube	1420 Pcs
CNY17-3S	Lite-On	100%	200%	150mA	300mV	-55°C ~ 100°C	Tube	8562 Pcs
CNY17-3S-TA	Lite-On	100%	200%	150mA	300mV	-55°C ~ 100°C	Tape & Reel	21448 Pcs
CNY17-3S-TA1	Lite-On	100%	200%	150mA	300mV	-55°C ~ 100°C	Tape & Reel	25200 Pcs
CNY17-4S	Lite-On	160%	320%	150mA	300mV	-55°C ~ 100°C	Tube	3741 Pcs
CNY17-4S-TA1	Lite-On	160%	320%	150mA	300mV	-55°C ~ 100°C	Tape & Reel	26600 Pcs

Engineering Selection Recommendations

Direct Replacement (No Design Changes Required): CNY17-2X007T and CNY17-2X017T are parametric equivalents to CNY17-2X019T. Both maintain identical electrical specifications and operating temperature range. Selection between these three Vishay parts depends on packaging preference (Tape & Reel) and inventory availability. All three are ROHS3 compliant with MSL 1 rating.

Conditional Replacement (Design Verification Required): Lite-On and Broadcom alternatives (CNY17-1S, CNY17-3-360E, CNY17-3S, CNY17-3S-TA, CNY17-3S-TA1, CNY17-4S, CNY17-4S-TA1) are suitable when the application can accommodate the following differences:

Operating temperature maximum of 100°C instead of 110°C
Higher output current capability (150mA vs. 50mA)
Lower Vce Saturation (300mV vs. 400mV)
Variable Current Transfer Ratio ranges (40-320% depending on part grade)

These alternatives are ROHS3 compliant with MSL 1 rating. Packaging options include both Tube and Tape & Reel formats. Applications requiring the full 110°C upper temperature limit must use Vishay parts (CNY17-2X019T, CNY17-2X007T, or CNY17-2X017T).

Frequently Asked Questions (FAQ)

Q: Can CNY17-2X007T or CNY17-2X017T be used as direct drop-in replacements for CNY17-2X019T?

A: Yes. Both parts are parametric equivalents manufactured by Vishay with identical isolation voltage (5000Vrms), Current Transfer Ratio (63-125% @ 10mA), output current (50mA), Vce Saturation (400mV), and operating temperature range (-55°C ~ 110°C). All three are packaged in 6-SMD, Gull Wing format and are ROHS3 compliant.

Q: What are the key differences between Vishay CNY17-2X019T and Lite-On CNY17-3S-TA1?

A: The primary differences are: (1) Current Transfer Ratio is 100-200% for CNY17-3S-TA1 versus 63-125% for CNY17-2X019T; (2) Maximum output current is 150mA versus 50mA; (3) Vce Saturation is 300mV versus 400mV; (4) Operating temperature maximum is 100°C versus 110°C. Both maintain 5000Vrms isolation and 6-SMD packaging. Applications sensitive to Current Transfer Ratio or requiring 110°C operation must verify compatibility.

Q: Which substitute part has the highest inventory availability?

A: CNY17-3S-TA1 (Lite-On) has the highest inventory with 25,200 units in stock, followed by CNY17-4S-TA1 (Lite-On) with 26,600 units. Both are available in Tape & Reel packaging.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed parts (CNY17-2X019T, CNY17-2X007T, CNY17-2X017T, CNY17-1S, CNY17-3-360E, CNY17-3S, CNY17-3S-TA, CNY17-3S-TA1, CNY17-4S, CNY17-4S-TA1) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: What packaging options are available?

A: Vishay parts (CNY17-2X019T, CNY17-2X007T, CNY17-2X017T) are supplied in Tape & Reel format. Lite-On alternatives are available in both Tube (CNY17-1S, CNY17-3S, CNY17-4S) and Tape & Reel (CNY17-3S-TA, CNY17-3S-TA1, CNY17-4S-TA1) formats. Broadcom CNY17-3-360E is supplied in Tube format.

Q: Can CNY17-4S-TA1 be used in applications designed for CNY17-2X019T?

A: Substitution requires design verification. CNY17-4S-TA1 has a higher Current Transfer Ratio (160-320% @ 10mA) and higher output current (150mA), which may affect circuit behavior. The operating temperature maximum is 100°C instead of 110°C. Applications must confirm that the higher CTR and output current do not cause circuit instability or exceed design margins.

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