CNY17-3 Optoisolator Equivalent & Substitute Parts

Part Overview

The CNY17-3 is a single-channel optoisolator with transistor output and base connection, manufactured by Isocom Components 2004 LTD. This component provides 5300Vrms isolation voltage and is designed for DC input applications requiring galvanic isolation with transistor-based output control. The CNY17-3 maintains Active product status with 94,700 units in current inventory. Substitute parts become necessary when addressing supply constraints, lead time requirements, or specific packaging preferences while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Isolation Voltage	5300Vrms
Number of Channels	1
Output Type	Transistor with Base
Current Transfer Ratio (Min)	100% @ 10mA
Current Transfer Ratio (Max)	200% @ 10mA
Maximum Output Voltage	70V
Maximum Output Current	50mA per channel
Vce Saturation (Max)	400mV
Operating Temperature Range	-55°C to 100°C
Package Type	6-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the CNY17-3 is determined by strict equivalence across the following critical parameters:

Isolation voltage of 5300Vrms
Single-channel configuration
Transistor output with base connection
Current transfer ratio range of 100% to 200% @ 10mA
Maximum output voltage of 70V
Maximum output current of 50mA
Vce saturation maximum of 400mV
6-DIP through-hole package format
Operating temperature range of -55°C to 100°C
DC input type

All substitute parts listed maintain these core electrical and mechanical specifications. Variations in turn-on/turn-off times and rise/fall times do not affect substitutability within the defined parameter envelope.

Parameter Comparison

Parameter	CNY17-3	CNY17-3X	CNY17-3XG	SFH600-2
Manufacturer	Isocom Components 2004 LTD	Isocom Components 2004 LTD	Isocom Components 2004 LTD	Vishay Semiconductor Opto Division
Isolation Voltage	5300Vrms	5300Vrms	5300Vrms	5300Vrms
Number of Channels	1	1	1	1
Current Transfer Ratio (Min)	100% @ 10mA	100% @ 10mA	100% @ 10mA	100% @ 10mA
Current Transfer Ratio (Max)	200% @ 10mA	200% @ 10mA	200% @ 10mA	200% @ 10mA
Maximum Output Voltage	70V	70V	70V	70V
Maximum Output Current	50mA	50mA	50mA	50mA
Vce Saturation (Max)	400mV	400mV	400mV	400mV
Operating Temperature Range	-55°C to 100°C	-55°C to 100°C	-55°C to 100°C	-55°C to 100°C
Package / Case	6-DIP (0.300", 7.62mm)	6-DIP (0.300", 7.62mm)	6-DIP (0.300", 7.62mm)	6-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Last Time Buy

Engineering Selection Recommendations

All substitute parts maintain full electrical and mechanical compatibility with the CNY17-3. Selection among equivalent options should be based on the following factors:

CNY17-3X and CNY17-3XG are manufactured by Isocom Components 2004 LTD and maintain Active product status, ensuring continued availability and supply chain stability. Both parts are supplied in tube packaging and represent direct alternatives within the same manufacturer's product line.

SFH600-2 is manufactured by Vishay Semiconductor Opto Division and carries Last Time Buy status. This designation indicates that the manufacturer has announced end-of-life for this component. While electrically equivalent, SFH600-2 should be selected only when existing inventory is available and long-term supply is not a requirement.

All parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Frequently Asked Questions (FAQ)

Q: Can CNY17-3X be used as a direct replacement for CNY17-3?

A: Yes. CNY17-3X meets all electrical and mechanical specifications of the CNY17-3, including isolation voltage, current transfer ratio, output voltage and current ratings, and package format. Both are manufactured by Isocom Components 2004 LTD and maintain Active product status.

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

A: Both parts are electrically identical across all critical parameters. The primary difference is packaging designation. CNY17-3XG is supplied in tube packaging, while CNY17-3 may have different packaging options. Both maintain the same 6-DIP through-hole package format and are suitable for identical circuit applications.

Q: Is SFH600-2 a viable long-term substitute?

A: SFH600-2 is electrically equivalent to the CNY17-3 and meets all specified parameters. However, SFH600-2 carries Last Time Buy status from Vishay Semiconductor Opto Division, indicating end-of-life announcement. Use SFH600-2 only when current inventory is available and long-term supply continuity is not required.

Q: Are there any timing differences between these parts?

A: Turn-on/turn-off times and rise/fall times vary slightly among the substitute parts. CNY17-3 and CNY17-3XG specify 4.2µs turn-on and 23µs turn-off times, while CNY17-3X and SFH600-2 specify faster switching characteristics. These variations do not affect substitutability within the defined parameter envelope and do not impact circuit functionality for standard DC isolation applications.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. All substitute parts use the identical 6-DIP (0.300", 7.62mm) through-hole package format. PCB footprints, pin assignments, and mounting requirements are identical across all listed parts, enabling direct substitution without design modification.

Q: What compliance certifications apply to all substitute parts?

A: All parts are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is 1 (Unlimited) for all parts, indicating no special moisture handling requirements during storage or assembly.

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