CNW82SD Equivalent & Substitute Parts

Part Overview

The CNW82SD is an optoisolator with transistor output manufactured by onsemi, designed for high-voltage isolation applications requiring 5900Vrms isolation rating. This component features a single channel configuration in a 6-SMD surface mount package with a maximum output voltage of 50V and 100mA output current capability.

The CNW82SD is classified as obsolete. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

CNW82SD

onsemiIn Stock: 1098CNW82SD Datasheet

Current PartRFQ

CNY17F-1S

Lite-On Inc.In Stock: 1918CNY17F-1S Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CNW82SD is determined by the following critical parameters:

• Isolation Voltage: Substitute parts must maintain isolation voltage at or above 5000Vrms to ensure adequate electrical isolation in high-voltage applications
• Output Configuration: Single-channel transistor output is required
• Package Type: 6-SMD, Gull Wing surface mount package ensures mechanical and electrical compatibility
• Output Specifications: Maximum output voltage and current ratings must meet or exceed the original specification (50V, 100mA)
• Saturation Voltage: Vce saturation characteristics must be compatible with circuit design requirements

The CNY17F-1S qualifies as a substitute based on these parameters. It maintains the required isolation voltage (5000Vrms), single-channel transistor output configuration, identical 6-SMD package format, and exceeds the output voltage (70V) and current (150mA) ratings of the original part.

Parameter Comparison

Engineering Selection Recommendations

The CNY17F-1S is suitable as a substitute for the CNW82SD based on the following factors:

Product Status: The CNY17F-1S maintains active product status with confirmed inventory availability (1840 Pcs), whereas the CNW82SD is obsolete. This ensures long-term supply chain viability and continued manufacturer support.

Compliance: The CNY17F-1S is ROHS3 compliant, meeting current regulatory requirements for electronic components. The original CNW82SD is RoHS non-compliant, making the substitute preferable for applications subject to environmental regulations.

Electrical Compatibility: The CNY17F-1S exceeds the electrical specifications of the CNW82SD across critical parameters. The isolation voltage of 5000Vrms remains within acceptable range for applications designed for 5900Vrms isolation. Output voltage (70V vs. 50V) and output current (150mA vs. 100mA) ratings provide design margin. The improved Vce saturation (300mV vs. 400mV) offers better performance characteristics.

Package Compatibility: Both components utilize identical 6-SMD, Gull Wing surface mount packaging, ensuring direct mechanical compatibility without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can the CNY17F-1S directly replace the CNW82SD without circuit modifications?

A: The CNY17F-1S is mechanically and electrically compatible with the CNW82SD due to identical package format and superior electrical ratings. However, circuit validation is necessary to confirm performance in the specific application context, particularly regarding the lower isolation voltage (5000Vrms vs. 5900Vrms) and different current transfer ratio characteristics.

Q: What is the significance of the current transfer ratio difference between these parts?

A: The CNW82SD specifies a minimum current transfer ratio of 0.4% @ 10mA, while the CNY17F-1S specifies 40% @ 10mA. This substantial difference indicates different internal LED-to-transistor coupling efficiency. Applications relying on specific current transfer ratio values must account for this parameter variation in circuit design.

Q: Are there compliance considerations when substituting the CNW82SD?

A: Yes. The CNW82SD is RoHS non-compliant, while the CNY17F-1S is ROHS3 compliant. Applications subject to RoHS regulations or customer requirements for compliant components should prioritize the CNY17F-1S. Conversely, legacy systems with specific non-compliant component requirements may require the original part or equivalent non-compliant alternatives.

Q: Does the 6-SMD package format guarantee pin-for-pin compatibility?

A: The 6-SMD, Gull Wing package format ensures mechanical compatibility and standard pin pitch. However, internal pin configuration and functional assignment must be verified against datasheets to confirm electrical pin-for-pin compatibility before implementation.

Q: What inventory considerations apply to these parts?

A: The CNW82SD is obsolete with limited remaining inventory (1070 Pcs). The CNY17F-1S is an active product with substantially higher inventory availability (1840 Pcs), providing greater supply chain security for ongoing production requirements.