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Microchip Technology TC670ECHTR Fan Failure Sensor

The TC670ECHTR is an integrated fan speed sensor designed to prevent thermal damage by detecting fan failure in cooling systems. It monitors fan speed via pulse detection and asserts an ALERT signal when the speed falls below a user-defined threshold, set using a resistor divider on the THRESHOLD pin. Compatible with all linear-controlled 2-wire fans, it simplifies system design by removing the need for 3-wire solutions. Featuring a low operating current of about 90µA, it is ideal for industrial equipment, power supplies, and data storage applications, offering reliable fan failure detection with reset capabilities for system flexibility.

Authorized Distributors
Source:Newark
Part No:TC670ECHTR
Stock:2397
Inv Date:06-12-2026
Price: Unit price: $1.83
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Source:DigiKey
Part No:TC670ECHTR
Stock:11256
Inv Date:06-12-2026
Price: Unit price: $1.78
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Part No:TC670ECHTR
Stock:2668
Inv Date:06-13-2026
Price: Unit price: $1.78
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Part No:TC670ECHTR
Stock:0
Inv Date:06-12-2026
Price: Unit price: $1.83
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Part No:TC670ECHTR
Stock:3000
Inv Date:06-12-2026
Price: Unit price: $1.27
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Part No:TC670ECHTR
Stock:515
Inv Date:06-13-2026
Price: N/A
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Microchip Technology TC670ECHTR Fan Failure Sensor Specifications:

  • Supply Voltage: 3.0V to 5.5V
  • Supply Current: approximately 90µA (typ.)
  • Temperature Range: -40°C to +85°C
  • GND: Ground terminal
  • Pin Configuration: 6-pin SOT-23 package
  • ALERT Output: Open-drain, requires external pull-up resistor
  • THRESHOLD Input: Analog, sets fan speed threshold via resistor divider
  • SENSE Input: Analog, detects pulse signals from fan
  • CLEAR Pin: Digital input to reset ALERT signal
  • Vpp Range: 3.0V to 5.5V
  • Pin Descriptions: THRESHOLD (analog), GND, CLEAR (digital), VDD (power), ALERT (digital), SENSE (analog)
  • Operating Temperature: -40°C to +85°C
  • Electrical Characteristics: VTH(SENSE) ~124mV, Rsense ~50kΩ, ALERT low voltage 0.3V, output delay time 176ms
  • Protection: ESD protection on all pins
  • Package Type: SOT-23A-6

Buy the Microchip TC670 – Reliable Fan Failure Detection for Industrial Applications

Order the Microchip TC670 fan failure detector online today and enhance system reliability. With its adjustable threshold, low current draw, and compatibility with all linear-controlled 2-wire fans, it offers precise failure prediction while reducing false alarms. Its compact SOT-23 package and wide temperature range make installation easy for industrial equipment, power supplies, and data storage applications. Trust Microchip’s proven quality for safe, efficient thermal management in your critical systems and prevent costly thermal damage by acting early on fan failures.

Buy Microchip TC670 now and ensure reliable fan failure detection with low power consumption for industrial systems and data storage devices.

Frequently Asked Questions

Where can I buy Microchip Technology TC670ECHTR?

You can click on the BUY or RFQ button to purchase TC670ECHTR from an authorized Microchip Technology distributor.

How do I troubleshoot issues or seek technical support for part TC670ECHTR?

You can download the TC670ECHTR datasheet or visit the Microchip Technology website for support.

Who is the manufacturer of TC670ECHTR?

Microchip Technology

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