TC642VOA Equivalent & Substitute Parts

Part Overview

The TC642VOA is a Brushless DC (BLDC) motor driver controller manufactured by Microchip Technology, designed for fan control applications. Operating across a 3V to 5.5V supply voltage range, this 8-SOIC surface-mount integrated circuit functions as a speed controller with parallel interface and low-side pre-driver output configuration. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specification, enabling direct replacement in applications where the TC642VOA may be unavailable or when inventory optimization is required.

Substiute Parts

TC642VOA

Microchip TechnologyIn Stock: 1684TC642VOA Datasheet

Current PartRFQ

TC646VOA

Microchip TechnologyIn Stock: 2257TC646VOA Datasheet

Parametric EquivalentRFQ

TC647VOA

Microchip TechnologyIn Stock: 1196TC647VOA Datasheet

Parametric EquivalentRFQ

TC648VOA

Microchip TechnologyIn Stock: 3154TC648VOA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the TC642VOA are identified based on strict parameter equivalence across the following critical criteria:

Electrical Parameters:

• Motor type: Brushless DC (BLDC)
• Function: Speed controller
• Output configuration: Pre-Driver - Low Side
• Interface: Parallel
• Supply voltage range: 3V ~ 5.5V
• Operating temperature range: 0°C ~ 85°C

Mechanical Parameters:

• Package type: 8-SOIC
• Package dimensions: 0.154" width (3.90mm)
• Mounting type: Surface Mount

Compliance Parameters:

• RoHS3 compliance
• REACH unaffected status
• ECCN: EAR99
• HTSUS: 8542.31.0001

All substitute parts (TC646VOA, TC647VOA, TC648VOA) maintain identical electrical and mechanical specifications with the TC642VOA, differing only in base product number designation and moisture sensitivity level in one instance.

Parameter Comparison

Engineering Selection Recommendations

All four parts (TC642VOA, TC646VOA, TC647VOA, TC648VOA) maintain Active product status from Microchip Technology and carry full RoHS3 compliance certification. Selection between these equivalents should be based on:

Moisture Sensitivity Considerations: TC642VOA, TC646VOA, and TC648VOA carry MSL 1 rating (unlimited moisture exposure tolerance), suitable for standard manufacturing and storage environments. TC647VOA carries MSL 3 rating (168-hour moisture exposure limit), requiring controlled humidity storage and handling procedures during assembly.

Inventory Availability: TC648VOA: 3117 Pcs in stock TC646VOA: 2226 Pcs in stock TC642VOA: 1599 Pcs in stock TC647VOA: 1136 Pcs in stock

All parts are supplied in tube packaging and maintain identical electrical performance across the specified operating range.

Frequently Asked Questions (FAQ)

Q: Can TC646VOA, TC647VOA, or TC648VOA be used as direct replacements for TC642VOA?

A: Yes. All three parts are parametric equivalents with identical electrical specifications (BLDC motor control, 3V-5.5V supply, parallel interface, low-side pre-driver output) and mechanical specifications (8-SOIC package, surface mount). Direct PCB substitution is supported without design modification.

Q: What is the difference between TC642VOA and TC647VOA?

A: The primary difference is moisture sensitivity level. TC642VOA carries MSL 1 (unlimited moisture tolerance), while TC647VOA carries MSL 3 (168-hour moisture exposure limit). This affects storage and handling requirements during manufacturing but does not impact electrical performance or end-use operation.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. TC642VOA, TC646VOA, TC647VOA, and TC648VOA all carry ROHS3 Compliant certification and are REACH unaffected.

Q: Do these parts require different PCB footprints?

A: No. All parts use the 8-SOIC package with identical dimensions (0.154" width, 3.90mm). PCB footprints are interchangeable.

Q: Which part should be selected for moisture-sensitive manufacturing environments?

A: TC642VOA, TC646VOA, or TC648VOA are recommended for standard manufacturing environments due to MSL 1 rating. TC647VOA requires controlled humidity storage (MSL 3, 168 hours) and is suitable for environments with established moisture control protocols.