FOD063L Equivalent & Substitute Parts

Part Overview

The FOD063L is a logic output optoisolator manufactured by onsemi, featuring 3.75kV isolation voltage, 2-channel configuration, and open collector Schottky clamped output. This component is classified as obsolete, making identification of suitable alternatives essential for ongoing system support and new design implementations. The FOD063L operates at 10Mbps data rate with 25kV/µs common mode transient immunity and is housed in an 8-SOIC package suitable for surface mount applications.

Substiute Parts

FOD063L

onsemiIn Stock: 4014FOD063L Datasheet

Current PartRFQ

HCPL-0631-000E

Broadcom LimitedIn Stock: 3860HCPL-0631-000E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FOD063L is determined by strict alignment of the following critical parameters:

• Isolation Voltage: 3750Vrms (exact match required)
• Number of Channels: 2 (exact match required)
• Output Configuration: Open Collector, Schottky Clamped (exact match required)
• Input Type: DC (exact match required)
• Package Type: 8-SOIC form factor (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Output Current Capability: 50 mA per channel (exact match required)

The HCPL-0631-000E manufactured by Broadcom Limited meets all mandatory substitution criteria. While certain electrical characteristics differ (CMTI, propagation delay, supply voltage range), these variations remain within acceptable tolerance for equivalent component classification in this optoisolator category.

Parameter Comparison

Engineering Selection Recommendations

The HCPL-0631-000E is the qualified equivalent substitute for the FOD063L based on the following engineering criteria:

Functional Equivalence: Both components share identical isolation voltage (3750Vrms), channel count (2), output configuration (open collector Schottky clamped), and package form factor (8-SOIC). Input and output electrical characteristics align within acceptable engineering tolerances for optoisolator applications.

Product Status Advantage: The HCPL-0631-000E maintains active product status with Broadcom Limited, ensuring continued availability, manufacturing support, and compliance documentation. The FOD063L obsolete status necessitates transition to an active equivalent.

Compliance and Certifications: The HCPL-0631-000E carries RoHS3 compliance certification, whereas the FOD063L compliance status is not specified. Both components are REACH Unaffected and classified under identical ECCN (EAR99) and HTSUS (8541.49.8000) codes.

Supply Chain Considerations: Current inventory availability for HCPL-0631-000E (3822 Pcs) supports production requirements and design transitions from the obsolete FOD063L.

Frequently Asked Questions (FAQ)

Q: Can the HCPL-0631-000E directly replace the FOD063L in existing designs?

A: Yes. Both components share identical isolation voltage, channel configuration, output type, and 8-SOIC package dimensions. Pin-to-pin compatibility is maintained. However, the supply voltage range differs (FOD063L: 2.7V–3.3V; HCPL-0631-000E: 4.5V–5.5V), requiring circuit verification to confirm power supply compatibility.

Q: What are the differences in Common Mode Transient Immunity between these parts?

A: The FOD063L specifies 25kV/µs CMTI, while the HCPL-0631-000E specifies 10kV/µs CMTI. Applications requiring the higher CMTI specification of the FOD063L must evaluate whether the reduced CMTI of the HCPL-0631-000E remains acceptable for the intended circuit environment.

Q: Are propagation delay differences significant for substitution?

A: The FOD063L specifies tpLH/tpHL of 90ns/75ns (max), while the HCPL-0631-000E specifies 100ns/100ns (max). The HCPL-0631-000E exhibits slightly longer propagation delays. Applications with strict timing requirements must confirm that the increased delay remains within system specifications.

Q: What packaging differences exist between these components?

A: Both components use 8-SOIC packages with identical 0.154" (3.90mm) width. The HCPL-0631-000E is specified as "8-SO Tall" versus the FOD063L standard 8-SOIC. Physical height differences may exist; mechanical clearance verification is required for space-constrained applications.

Q: Is the HCPL-0631-000E suitable for new designs?

A: Yes. The HCPL-0631-000E is active product status with RoHS3 compliance, making it appropriate for new design implementations. The FOD063L obsolete status makes the HCPL-0631-000E the recommended choice for ongoing development.