TC642EUA Equivalent & Substitute Parts

Part Overview

The TC642EUA is a Brushless DC (BLDC) motor driver controller manufactured by Microchip Technology, designed for fan control applications. This 8-MSOP surface mount integrated circuit operates across a 3V to 5.5V supply voltage range and functions as a speed controller with low-side pre-driver output configuration using parallel interface communication. The device is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain disruptions, or design flexibility within the FanSense™ series motor driver portfolio.

Substiute Parts

TC642EUA

Microchip TechnologyIn Stock: 855TC642EUA Datasheet

Current PartRFQ

TC642BEUA

Microchip TechnologyIn Stock: 1213TC642BEUA Datasheet

Parametric EquivalentRFQ

TC647BEUA

Microchip TechnologyIn Stock: 1299TC647BEUA Datasheet

Parametric EquivalentRFQ

TC648BEUA

Microchip TechnologyIn Stock: 1791TC648BEUA Datasheet

Parametric EquivalentRFQ

TC649BEUA

Microchip TechnologyIn Stock: 1575TC649BEUA Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for TC642EUA is determined by strict parameter matching across the following criteria:

Primary Substitution Parameters:

• Manufacturer: Microchip Technology
• Series: FanSense™
• Motor Type: Brushless DC (BLDC)
• Function: Controller - Speed
• Output Configuration: Pre-Driver - Low Side
• Interface: Parallel
• Voltage Supply Range: 3V ~ 5.5V
• Operating Temperature: -40°C ~ 85°C (TA)
• Package Type: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

All identified substitute parts (TC642BEUA, TC647BEUA, TC648BEUA, TC649BEUA) maintain identical electrical specifications, thermal operating range, supply voltage parameters, and physical packaging dimensions. Variations exist only in base product number designation and moisture sensitivity level classification.

Parameter Comparison

Engineering Selection Recommendations

All substitute parts maintain Active product status with full RoHS3 compliance and REACH unaffected classification. Selection between TC642EUA and its equivalents is based on inventory availability and moisture sensitivity level requirements for specific manufacturing environments.

For applications requiring unlimited moisture sensitivity tolerance, TC642EUA, TC642BEUA, and TC648BEUA are suitable selections with MSL 1 rating. TC647BEUA and TC649BEUA provide equivalent electrical and thermal performance with MSL 2 rating, requiring one-year floor life management from bag opening.

All parts share identical electrical specifications, thermal operating range, supply voltage parameters, package dimensions, and mounting characteristics. Selection does not impact circuit design or board layout requirements.

Frequently Asked Questions (FAQ)

Q: Can TC642BEUA, TC647BEUA, TC648BEUA, or TC649BEUA be used as direct replacements for TC642EUA?

A: Yes. All substitute parts maintain identical electrical specifications, voltage supply range (3V ~ 5.5V), operating temperature range (-40°C ~ 85°C), BLDC motor control function, parallel interface configuration, and 8-MSOP package dimensions. Direct pin-for-pin substitution is supported without circuit modification.

Q: What is the difference between MSL 1 and MSL 2 ratings?

A: MSL 1 (Unlimited) indicates the component has unlimited floor life after bag opening. MSL 2 (1 Year) requires the component to be used within one year of bag opening. Selection depends on manufacturing environment moisture exposure and storage protocols.

Q: Are all substitute parts manufactured by Microchip Technology?

A: Yes. TC642BEUA, TC647BEUA, TC648BEUA, and TC649BEUA are all manufactured by Microchip Technology and belong to the FanSense™ series.

Q: Do substitute parts require different PCB layouts or design modifications?

A: No. All parts use identical 8-MSOP package dimensions (0.118", 3.00mm width) and surface mount configuration. PCB layout, footprint, and design remain unchanged.

Q: Which substitute part has the highest current inventory?

A: TC648BEUA has the highest inventory at 1700 pieces, followed by TC649BEUA at 1529 pieces.