CNY172FR2VM Equivalent & Substitute Parts

Part Overview

The CNY172FR2VM is an optoisolator transistor with base output manufactured by onsemi, designed for high-voltage isolation applications requiring 7500Vpk isolation rating. This component features a single channel with transistor output and integrated base connection, housed in a 6-SMD surface mount package. The part is currently classified as obsolete, making identification of compatible substitute components essential for ongoing design support and production continuity.

Substiute Parts

CNY172FR2VM

onsemiIn Stock: 923CNY172FR2VM Datasheet

Current PartRFQ

CNY172SR2VM

onsemiIn Stock: 2460CNY172SR2VM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CNY172FR2VM is determined by the following critical parameters:

Mandatory Matching Criteria:

• Single channel configuration
• Transistor with base output topology
• 6-SMD surface mount package with gull wing leads
• Maximum output voltage of 70V
• Maximum output current of 50mA per channel
• Operating temperature range of -40°C to 100°C
• Input type: DC

Flexible Parameters (allowing substitution):

• Voltage isolation rating (may be lower than 7500Vpk if application permits)
• Current transfer ratio range (63% to 125% @ 10mA acceptable)
• Turn-on/turn-off timing characteristics
• Rise/fall time specifications
• Product status (active parts preferred over obsolete)

The CNY172SR2VM qualifies as a substitute based on matching all mandatory criteria, though it provides a lower isolation voltage rating of 4170Vrms compared to the original 7500Vpk specification.

Parameter Comparison

Engineering Selection Recommendations

The CNY172SR2VM is the designated substitute for the obsolete CNY172FR2VM based on the following factors:

Product Status: The CNY172SR2VM maintains active production status with onsemi, ensuring long-term availability and supply chain continuity compared to the obsolete CNY172FR2VM.

Compliance & Certifications: The CNY172SR2VM carries ROHS3 compliance certification, meeting current environmental and regulatory requirements. Both parts maintain REACH Unaffected status and EAR99 export classification.

Functional Equivalence: The substitute part maintains identical electrical performance across all critical parameters including current transfer ratio, output voltage and current ratings, saturation voltage, and operating temperature range. The package configuration remains unchanged at 6-SMD gull wing.

Isolation Voltage Consideration: The primary specification difference is the isolation voltage rating. The CNY172SR2VM provides 4170Vrms isolation compared to the original 7500Vpk. Selection of this substitute requires confirmation that the application isolation requirements are satisfied by the lower rating.

Frequently Asked Questions (FAQ)

Q: Can the CNY172SR2VM directly replace the CNY172FR2VM in existing designs?

A: Direct replacement is possible from a mechanical and electrical interface perspective. Both parts use identical 6-SMD gull wing packaging and share matching output specifications (70V maximum, 50mA per channel). The primary consideration is isolation voltage: the substitute provides 4170Vrms versus the original 7500Vpk. Replacement is appropriate only if the application isolation requirements are satisfied by the lower rating.

Q: What is the difference between 7500Vpk and 4170Vrms isolation ratings?

A: These represent different measurement standards for isolation voltage. Peak voltage (Vpk) and RMS voltage (Vrms) are distinct specifications. Determination of compatibility requires analysis of the specific isolation requirements in the application circuit.

Q: Are there any differences in switching performance between these parts?

A: Both parts specify identical turn-on and turn-off times of 2µs and 3µs respectively. Rise and fall times differ slightly: the CNY172FR2VM specifies 1µs and 2µs, while the CNY172SR2VM specifies 4µs and 4.6µs maximum. These timing differences are minor and unlikely to impact most applications.

Q: Is the CNY172SR2VM available in the same packaging options?

A: The CNY172SR2VM is supplied in Cut Tape (CT) and Digi-Reel packaging, while the original CNY172FR2VM packaging format is not specified in available data. Both parts use the identical 6-SMD gull wing package configuration for surface mount assembly.

Q: What is the inventory status of the substitute part?

A: The CNY172SR2VM has 2380 pieces in new original stock, providing immediate availability. The CNY172FR2VM has 847 pieces available but is classified as obsolete, indicating no future production.

Q: Are there any compliance or certification differences?

A: The CNY172SR2VM carries ROHS3 compliance certification. Both parts maintain REACH Unaffected status and EAR99 export classification. The substitute part meets current environmental compliance standards.