FAN7602BN Equivalent & Substitute Parts

Part Overview

The FAN7602BN is an offline switch flyback converter IC manufactured by onsemi, designed for isolated power management applications. This 8-DIP through-hole component operates at 65kHz switching frequency with 48W power handling capability. The FAN7602BN is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitute parts maintain the core functional specifications while offering improved availability, updated packaging options, or enhanced product status.

Substiute Parts

FAN7602BN

onsemiIn Stock: 7519FAN7602BN Datasheet

Current PartRFQ

FAN7602CMX

onsemiIn Stock: 40370FAN7602CMX Datasheet

SimilarRFQ

FAN7602BN

Fairchild SemiconductorIn Stock: 7606FAN7602BN Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FAN7602BN are identified based on matching the following critical parameters: topology (Flyback), output isolation (Isolated), switching frequency (65kHz), power rating (48W), startup voltage (12V), duty cycle (75%), and operating temperature range (-25°C ~ 125°C). Parts are grouped into two categories:

Package-Compatible Substitutes: Parts maintaining the same 8-DIP through-hole package and electrical specifications, enabling direct board-level replacement without layout modification.

Functional Equivalents with Different Packaging: Parts with identical electrical performance but alternative package types (such as 8-SOIC surface mount), requiring PCB redesign but offering improved availability or manufacturing advantages.

Parameter Comparison

Engineering Selection Recommendations

For Direct Through-Hole Replacement: The FAN7602BN from Fairchild Semiconductor provides package-compatible substitution with active product status and ROHS3 compliance. This option maintains identical PCB footprint and mounting methodology. Note the MSL rating difference: Fairchild's MSL3 (168 hours) versus onsemi's MSL1 (unlimited) affects moisture-sensitive storage requirements.

For Active Production with Packaging Flexibility: The FAN7602CMX from onsemi offers active product status with enhanced fault protection (includes Over Temperature protection) and extended supply voltage range (8V ~ 25V). Surface-mount packaging requires PCB redesign but provides improved manufacturing efficiency and higher inventory availability.

For Obsolete Part Replacement: Both active alternatives address the obsolete status of the original onsemi FAN7602BN. Selection depends on manufacturing process capability (through-hole versus surface-mount) and compliance requirements.

Frequently Asked Questions (FAQ)

Q: Can FAN7602CMX replace FAN7602BN in existing through-hole designs? A: No. FAN7602CMX uses 8-SOIC surface-mount packaging versus the 8-DIP through-hole package of FAN7602BN. PCB redesign is required for this substitution.

Q: What is the primary difference between onsemi and Fairchild FAN7602BN parts? A: Both maintain identical electrical specifications and 8-DIP packaging. The Fairchild version has active product status and ROHS3 compliance but carries MSL3 moisture sensitivity versus onsemi's MSL1. Fairchild's part is suitable for new designs requiring through-hole mounting.

Q: Does FAN7602CMX provide better protection than FAN7602BN? A: FAN7602CMX includes Over Temperature fault protection in addition to Over Load and Over Voltage protection found in FAN7602BN. FAN7602CMX also supports extended supply voltage range (8V ~ 25V versus 8V ~ 20V).

Q: Are all three parts electrically equivalent for the core 48W flyback converter function? A: Yes. All three parts share identical topology, switching frequency (65kHz), power rating (48W), startup voltage (12V), duty cycle (75%), and operating temperature range (-25°C ~ 125°C). Differences exist only in packaging, product status, and protection features.

Q: What does MSL rating mean for component selection? A: MSL (Moisture Sensitivity Level) indicates storage and handling requirements. MSL1 (unlimited) allows indefinite dry storage. MSL3 (168 hours) requires components be used within 168 hours of moisture exposure or require baking. This affects supply chain logistics and inventory management.