CNW11AV2S Equivalent & Substitute Parts

Part Overview

The CNW11AV2S is an optoisolator transistor with base output manufactured by onsemi, designed for high-voltage isolation applications requiring 4000Vrms isolation rating. This component features a single channel configuration with transistor output and integrated base connection, housed in a 6-SMD surface mount package. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and production continuity.

Substiute Parts

CNW11AV2S

onsemiIn Stock: 784CNW11AV2S Datasheet

Current PartRFQ

H11AV1AM

onsemiIn Stock: 2137H11AV1AM Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The H11AV1AM qualifies as a functional substitute for the CNW11AV2S based on the following critical parameters:

Matching Criteria:

• Single channel optoisolator configuration
• Transistor with base output topology
• Isolation voltage rating (4170Vrms exceeds 4000Vrms requirement)
• Maximum output voltage (70V)
• Vce saturation specification (400mV)
• Input type (DC)
• Manufacturer (onsemi)
• Same base product family (H11AV vs CNW11)

Key Differences:

• Package format: H11AV1AM uses 6-DIP through-hole versus CNW11AV2S 6-SMD surface mount
• Current transfer ratio: H11AV1AM specifies 100-300% @ 10mA versus CNW11AV2S minimum 50% @ 10mA
• Product status: H11AV1AM is active versus CNW11AV2S obsolete
• RoHS compliance: H11AV1AM is ROHS3 compliant versus CNW11AV2S non-compliant
• Operating temperature: H11AV1AM rated -40°C to 100°C

Parameter Comparison

Engineering Selection Recommendations

The H11AV1AM serves as a functional equivalent for the obsolete CNW11AV2S with the following considerations:

Electrical Compatibility: The H11AV1AM meets or exceeds all critical electrical parameters. The higher isolation voltage rating (4170Vrms vs 4000Vrms) and improved current transfer ratio (100-300% vs 50% minimum) provide enhanced performance margins. Output voltage and saturation specifications are identical.

Product Status Advantage: H11AV1AM is an active product with ongoing manufacturer support, whereas CNW11AV2S is obsolete. This ensures long-term availability and supply chain stability.

Compliance Improvement: H11AV1AM achieves ROHS3 compliance, addressing regulatory requirements that may apply to new designs or production runs. The original CNW11AV2S is non-compliant.

Design Modification Required: Substitution necessitates PCB layout revision due to package format change from 6-SMD surface mount to 6-DIP through-hole. Pin configuration and electrical connections must be verified against manufacturer datasheets to ensure proper circuit integration.

Frequently Asked Questions (FAQ)

Q: Can H11AV1AM directly replace CNW11AV2S without circuit modification?

A: Electrical functionality is compatible. However, PCB layout modification is required due to different package formats (6-SMD surface mount vs 6-DIP through-hole). Pin assignments must be verified against both datasheets.

Q: What are the key electrical parameters that make H11AV1AM suitable for CNW11AV2S applications?

A: Matching single-channel configuration, transistor with base output topology, identical maximum output voltage (70V), identical Vce saturation (400mV), and higher isolation voltage rating (4170Vrms exceeds 4000Vrms requirement).

Q: Does the higher current transfer ratio of H11AV1AM affect circuit operation?

A: The H11AV1AM current transfer ratio range (100-300% @ 10mA) exceeds the CNW11AV2S minimum (50% @ 10mA). This represents improved performance and does not create incompatibility. Circuit designs based on the lower CNW11AV2S specification will operate within acceptable margins with H11AV1AM.

Q: What is the impact of switching from surface mount to through-hole packaging?

A: This requires PCB redesign for component placement and soldering process changes. Through-hole mounting uses different assembly techniques than surface mount. Mechanical clearance and board layout must accommodate the 6-DIP package dimensions (0.300" width, 7.62mm pitch).

Q: Is RoHS compliance a functional requirement for substitution?

A: RoHS compliance is a regulatory and supply chain consideration, not an electrical function parameter. H11AV1AM ROHS3 compliance provides advantage for applications subject to environmental regulations. The original CNW11AV2S non-compliance may restrict use in certain markets or applications.

Q: Are there operating temperature differences between these parts?

A: H11AV1AM specifies operating temperature range of -40°C to 100°C. CNW11AV2S operating temperature is not specified in available parameters. Applications requiring specific temperature performance should verify H11AV1AM ratings against design requirements.