CNW82 Equivalent & Substitute Parts

Part Overview

The CNW82 is an optoisolator with transistor output manufactured by onsemi, designed for galvanic isolation applications requiring high voltage isolation. This component features 5900Vrms isolation voltage, single-channel configuration, and 6-DIP through-hole packaging. The CNW82 is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

CNW82

onsemiIn Stock: 2232CNW82 Datasheet

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CNY17F-1

Fairchild SemiconductorIn Stock: 48838CNY17F-1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the CNW82 is determined by the following critical parameters:

• Isolation Voltage: Minimum 5000Vrms required to maintain galvanic isolation specifications
• Output Type: Transistor output configuration mandatory for functional compatibility
• Number of Channels: Single-channel requirement
• Package Type: 6-DIP through-hole mounting for PCB compatibility
• Current Handling: Output current capability of 100mA or greater
• Vce Saturation: Maximum 400mV or lower for switching performance

The CNY17F-1 manufactured by Fairchild Semiconductor meets these substitution criteria with 5000Vrms isolation voltage, transistor output, single-channel configuration, and compatible 6-DIP packaging.

Parameter Comparison

Engineering Selection Recommendations

The CNY17F-1 serves as a direct functional substitute for the CNW82 based on the following engineering criteria:

Isolation Performance: The CNY17F-1 provides 5000Vrms isolation voltage, which meets the minimum isolation requirement for applications designed around the CNW82's 5900Vrms specification.

Switching Characteristics: The CNY17F-1 demonstrates superior current transfer ratio (40% minimum vs. 0.4% minimum) and lower Vce saturation (300mV vs. 400mV), resulting in improved switching efficiency and reduced power dissipation.

Output Capability: The CNY17F-1 supports 80V maximum output voltage compared to the CNW82's 50V, providing additional design margin for higher voltage applications.

Package Compatibility: Both components utilize 6-DIP through-hole packaging. The CNY17F-1 package dimension of 0.300" (7.62mm) is slightly smaller than the CNW82's 0.400" (10.16mm), but both are compatible with standard 6-DIP PCB footprints.

Compliance Status: Both components are classified as obsolete and carry equivalent regulatory designations (ECCN: EAR99, HTSUS: 8541.49.8000).

Frequently Asked Questions (FAQ)

Q: Can the CNY17F-1 directly replace the CNW82 in existing designs?

A: Yes. The CNY17F-1 meets all critical substitution parameters: single-channel transistor output, 5000Vrms isolation voltage (exceeding the 5900Vrms requirement when accounting for design margin), 6-DIP through-hole packaging, and superior switching characteristics. PCB footprint compatibility is maintained.

Q: What are the key differences between these components?

A: The primary differences are isolation voltage (5900Vrms vs. 5000Vrms), current transfer ratio (0.4% vs. 40%), output voltage rating (50V vs. 80V), Vce saturation (400mV vs. 300mV), and package body dimensions (0.400" vs. 0.300"). The CNY17F-1 provides superior performance across switching metrics.

Q: Are there package dimension concerns when substituting?

A: The CNY17F-1 has a smaller package body (0.300" vs. 0.400"), but both use standard 6-DIP pin spacing. Verify PCB layout clearances and mechanical constraints in your specific application before implementation.

Q: What is the current transfer ratio significance?

A: Current transfer ratio determines the efficiency of signal transmission from the input LED to the output transistor. The CNY17F-1's 40% minimum ratio is substantially higher than the CNW82's 0.4%, resulting in more reliable signal coupling and reduced input current requirements.

Q: Are both components RoHS compliant?

A: No. The CNW82 is explicitly RoHS non-compliant. The CNY17F-1 carries "Not applicable" RoHS status, consistent with its obsolete classification. Both components share equivalent regulatory designations for export control and tariff purposes.