HCNW139 Equivalent & Substitute Parts

Part Overview

The HCNW139 is an optoisolator with Darlington output and base connection, manufactured by Broadcom Limited. This single-channel device provides 5000Vrms isolation and is designed for applications requiring galvanic isolation with Darlington output configuration. The part is currently active in production. Substitute parts are identified to address inventory availability, compliance requirements, or performance optimization in specific application contexts.

Substiute Parts

HCNW139

Broadcom LimitedIn Stock: 1960HCNW139 Datasheet

Current PartRFQ

HCNW139-000E

Broadcom LimitedIn Stock: 18908HCNW139-000E Datasheet

Parametric EquivalentRFQ

6N139M

onsemiIn Stock: 211196N139M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HCNW139 are grouped based on strict electrical and mechanical compatibility criteria:

Parametric Equivalent (HCNW139-000E): This substitute maintains identical electrical specifications across all critical parameters: 1 channel, 5000Vrms isolation, 200% minimum current transfer ratio at 12mA, 18V maximum output voltage, 60mA output current per channel, and 8-DIP through-hole package. The primary distinction is RoHS3 compliance status. This part is a direct functional replacement with no performance trade-offs.

Manufacturer Recommended Substitute (6N139M): This onsemi part maintains core isolation voltage (5000Vrms), output type (Darlington with Base), maximum output voltage (18V), and output current (60mA). The 8-DIP package footprint differs in pitch (7.62mm vs. 10.16mm), requiring PCB layout verification. Performance characteristics differ: current transfer ratio is 500% @ 1.6mA (higher efficiency), switching times are faster (240ns turn-on vs. 11µs), and operating temperature range extends to 100°C. These differences indicate enhanced performance but require application-level validation.

Parameter Comparison

Engineering Selection Recommendations

HCNW139-000E Selection: Choose this substitute when RoHS3 compliance is required and inventory of the original HCNW139 is unavailable. This part provides identical electrical performance and mechanical compatibility with improved regulatory compliance status. No circuit redesign is necessary.

6N139M Selection: This substitute is appropriate when enhanced performance characteristics are acceptable within the application design. The faster switching times (240ns vs. 11µs turn-on) and higher current transfer ratio (500% vs. 200%) provide operational advantages in timing-sensitive circuits. The extended operating temperature range (-40°C to 100°C) supports broader environmental applications. PCB layout modification is required due to different DIP pitch (7.62mm vs. 10.16mm). This part carries ROHS3 compliance and is suitable for new designs prioritizing performance optimization.

Frequently Asked Questions (FAQ)

Q: Can HCNW139-000E be used as a direct drop-in replacement for HCNW139?

A: Yes. HCNW139-000E maintains identical electrical specifications and mechanical package dimensions (8-DIP with 0.400" pitch). No circuit modifications are required. The primary difference is RoHS3 compliance certification.

Q: Is 6N139M a direct drop-in replacement?

A: No. While 6N139M maintains electrical compatibility in isolation voltage, output type, and current ratings, the package pitch differs (7.62mm vs. 10.16mm). PCB layout modification is necessary. Additionally, the faster switching characteristics and higher current transfer ratio require application-level validation to ensure compatibility with existing circuit timing and biasing.

Q: What are the key differences between HCNW139 and 6N139M?

A: Core isolation and output specifications are equivalent. Differences include: current transfer ratio (200% vs. 500%), turn-on time (11µs vs. 240ns), forward voltage (1.45V vs. 1.3V), operating temperature range (-40°C to 85°C vs. -40°C to 100°C), and DIP package pitch (10.16mm vs. 7.62mm). These differences indicate 6N139M provides faster response and higher efficiency but requires PCB redesign.

Q: Are all three parts RoHS compliant?

A: HCNW139 is RoHS non-compliant. HCNW139-000E and 6N139M are both ROHS3 compliant. For applications requiring RoHS compliance, select either HCNW139-000E or 6N139M.

Q: What is the impact of different DIP pitch on PCB design?

A: HCNW139 and HCNW139-000E use 0.400" (10.16mm) pitch; 6N139M uses 0.300" (7.62mm) pitch. Existing PCB footprints designed for 10.16mm pitch are not compatible with 7.62mm pitch. New PCB layout is required for 6N139M integration.

Q: Can switching time differences affect circuit performance?

A: Yes. HCNW139 and HCNW139-000E have 11µs turn-on time; 6N139M has 240ns turn-on time. In timing-critical applications, the faster response of 6N139M may alter circuit behavior. Application-specific testing is necessary to confirm compatibility.