CNY172FVM Equivalent & Substitute Parts

Part Overview

The CNY172FVM is an optoisolator transistor with base output manufactured by onsemi, designed for high-voltage isolation applications requiring 4170Vrms isolation rating. This component features a single-channel transistor output with integrated base connection, housed in a 6-SMD surface mount package. The CNY172FVM is currently classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Voltage - Isolation	4170Vrms
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
Turn On / Turn Off Time (Typ)	2µs, 3µs
Operating Temperature Range	-40°C ~ 100°C
Package / Case	6-SMD, Gull Wing
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the CNY172FVM are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Parameters for Substitution:

Voltage - Isolation: 4170Vrms (exact match required)
Number of Channels: 1 (exact match required)
Current Transfer Ratio range: 63% - 125% @ 10mA (exact match required)
Output Type: Transistor with Base (exact match required)
Voltage - Output (Max): 70V (exact match required)
Current - Output / Channel: 50mA (exact match required)
Package / Case: 6-SMD, Gull Wing (exact match required)
Mounting Type: Surface Mount (exact match required)

All substitute parts listed below meet these electrical and mechanical requirements without deviation.

Parameter Comparison

Parameter	CNY172FVM (Main)	CNY172SVM (Substitute)	CNY172SM (Substitute)
Manufacturer	onsemi	onsemi	Fairchild Semiconductor
Product Status	Obsolete	Active	Active
Voltage - Isolation	4170Vrms	4170Vrms	4170Vrms
Number of Channels	1	1	1
Current Transfer Ratio (Min)	63% @ 10mA	63% @ 10mA	63% @ 10mA
Current Transfer Ratio (Max)	125% @ 10mA	125% @ 10mA	125% @ 10mA
Turn On / Turn Off Time (Typ)	2µs, 3µs	2µs, 3µs	2µs, 3µs
Rise / Fall Time (Typ)	4µs, 4.6µs (Max)	4µs, 4.6µs (Max)	4µs, 4.6µs (Max)
Output Type	Transistor with Base	Transistor with Base	Transistor with Base
Voltage - Output (Max)	70V	70V	70V
Current - Output / Channel	50mA	50mA	50mA
Voltage - Forward (Vf) (Typ)	1.35V	1.35V	1.35V
Current - DC Forward (If) (Max)	60mA	60mA	60mA
Vce Saturation (Max)	400mV	400mV	400mV
Operating Temperature	-40°C ~ 100°C	-40°C ~ 100°C	-40°C ~ 100°C
Package / Case	6-SMD, Gull Wing	6-SMD, Gull Wing	6-SMD, Gull Wing
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Input Type	DC	DC	DC

Engineering Selection Recommendations

CNY172SVM (onsemi): This substitute is manufactured by onsemi, the original manufacturer of the CNY172FVM. The CNY172SVM is classified as Active product status, ensuring continued availability and manufacturing support. This part carries RoHS3 compliance certification, meeting current environmental and regulatory standards. The CNY172SVM is supplied in Bulk packaging and maintains identical electrical and mechanical specifications to the obsolete CNY172FVM.

CNY172SM (Fairchild Semiconductor): This substitute is manufactured by Fairchild Semiconductor and is classified as Active product status. The CNY172SM meets all electrical and mechanical parameter requirements and is supplied in Bulk packaging. This part provides an alternative source for the optoisolator function when onsemi supply is constrained.

Both substitute parts are direct functional equivalents based on provided specifications and certifications.

Frequently Asked Questions (FAQ)

Q: Can CNY172SVM be used as a direct replacement for CNY172FVM? A: Yes. The CNY172SVM matches all critical electrical parameters (isolation voltage, current transfer ratio, output voltage, output current, timing characteristics) and mechanical specifications (6-SMD package, surface mount). The primary difference is product status: CNY172SVM is Active while CNY172FVM is Obsolete.

Q: What is the difference between CNY172SVM and CNY172SM? A: Both parts are electrically and mechanically equivalent. The primary difference is manufacturer: CNY172SVM is manufactured by onsemi, while CNY172SM is manufactured by Fairchild Semiconductor. Both are Active products with identical parameter specifications.

Q: Are there packaging differences between these substitutes? A: All three parts use identical 6-SMD, Gull Wing surface mount packages. CNY172FVM and CNY172SM are supplied in standard packaging, while CNY172SVM is supplied in Bulk packaging. This does not affect component functionality or PCB compatibility.

Q: What compliance certifications apply to these parts? A: CNY172SVM carries RoHS3 compliance certification. All three parts are REACH Unaffected and classified under ECCN EAR99. Compliance documentation should be verified with the specific supplier for the selected part.

Q: Can these parts be used interchangeably in existing designs? A: Yes, within the scope of the provided electrical and mechanical parameters. All three parts maintain identical isolation voltage (4170Vrms), current transfer ratio (63-125% @ 10mA), output characteristics (70V max, 50mA per channel), and operating temperature range (-40°C ~ 100°C).

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