MCP9701A-E/TO Microchip Integrated Circuit (Other) In Stock
Microchip MCP9701A-E/TO is a linear active thermistor IC in a through-hole TO-92-3 package that converts temperature to an analog voltage. It provides a 19.5 mV/°C sensitivity with ±4°C accuracy from -40°C to +125°C. Low cost and simple interface make it ideal for temperature monitoring in consumer and industrial applications.
- Manufacturer
- Microchip
- Package
- Other
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- MCP9701A-E/TO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.1898(MOQ 1)
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 19.5 mV/°C voltage output sensitivity for direct ADC reading without bridge circuits or lookup tables
- Wide -40°C to +125°C operating range covering industrial and automotive temperature environments
- ±4°C maximum accuracy across the full temperature range with minimal calibration requirements
- Ultra-low 6 µA quiescent current enables battery-powered and always-on sensing applications
- TO-92-3 through-hole package simplifies prototyping and hand-assembly for low-volume designs
Applications
The MCP9701A-E/TO is used in HVAC systems, home appliances, and battery chargers to monitor ambient temperature and trigger fan control or thermal protection responses through a standard 10-bit ADC. It suits low-power IoT sensor nodes where the 6 µA quiescent current and direct voltage output eliminate signal conditioning circuitry between the sensor and microcontroller. Its TO-92 form factor makes it popular for educational kits, industrial panel temperature sensing, and any prototype where through-hole assembly is preferred over SMD.
Specifications
| Pbfree Code | Yes |
| Manufacturer Package Code | TO-92-3 |
| Factory Lead Time | 7Weeks |
| YTEOL | 8 |
| Accuracy-Max (Cel) | 4Cel |
| Body Height | 4.826mm |
| Body Length or Diameter | 4.826mm |
| Housing | PLASTIC |
| JESD-609 Code | e3 |
| Mounting Feature | THROUGH HOLE MOUNT |
| Number of Bits | 12 |
| Operating Current-Max | 0.015mA |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SIP3,.1,50 |
| Package Shape/Style | ROUND |
| Screening Level | TS 16949 |
| Sensors/Transducers Type | TEMPERATURE SENSOR,ANALOG,RESISTANCE BASED |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 3.1V |
| Surface Mount | NO |
| Terminal Finish | Matte Tin (Sn) |
| Termination Type | SOLDER |
| ## MCP9701A-E/TO Alternates Showing results | Image |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Philippines, Taiwan |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for MCP9701A-E/TO:
Analog Resistance Sensor, 8 Bit(s), 4Cel, Round, 3 Pin, Through Hole Mount
suggested
suggested
suggested
suggested
Analog Resistance Sensor, 12 Bit(s), 4Cel, Rectangular, 5 Pin, Surface Mount
Frequently Asked Questions
What output sensitivity does the MCP9701A-E/TO provide and how is temperature calculated from the output voltage?
The MCP9701A-E/TO outputs 400 mV at 0°C and increases at 19.5 mV per degree Celsius. Temperature in Celsius equals (VOUT - 400 mV) / 19.5 mV/°C, a simple linear equation requiring only a 10-bit ADC reading from a 3.3 V or 5 V microcontroller without lookup tables or complex linearization firmware.
How accurate is the MCP9701A-E/TO across its operating temperature range compared to a thermistor?
The MCP9701A-E/TO specifies ±4°C maximum accuracy from -40°C to +125°C with the A-grade variant providing tighter ±2°C typical at 25°C, while NTC thermistors typically require a calibration curve and Steinhart-Hart equation to achieve comparable accuracy. The linear output simplifies firmware and eliminates the 1% resistor divider and curve-fitting computation that thermistor circuits require.
What supply voltage does the MCP9701A-E/TO require and what is its quiescent current consumption?
The device operates from 3.1 V to 5.5 V supply with only 6 µA typical quiescent current at 3.3 V. At 6 µA, a 1000 mAh coin cell could theoretically power the sensor for over 160,000 hours if the ADC sampling is duty-cycled, making it one of the lowest-power linear temperature sensors available in a through-hole package.
For a fan speed controller that must respond to temperatures above 60°C, how should the MCP9701A-E/TO output be connected to a comparator?
At 60°C, the MCP9701A-E/TO output voltage is 400 mV + (60 × 19.5 mV) = 1570 mV. A comparator with its negative input tied to a 1.57 V reference derived from a voltage divider on the 3.3 V rail will assert its output when the sensor exceeds 60°C, directly triggering a fan PWM controller or relay without microcontroller intervention, reducing system latency to under 1 ms.
Related Guides
CL31A107MQHNNNE 1206 100 uF MLCC Selection Guide
How to choose CL31A107MQHNNNE and related 1206 MLCCs for low-voltage bulk capacitance and regulator stability.
Jul 2, 2026
CL05B103KB5NNNC 0402 10 nF X7R MLCC Selection Guide
How to choose CL05B103KB5NNNC and related 0402 MLCCs for bypassing, filtering, voltage derating, and sourcing.
Jul 2, 2026
ADAQ7768-1 Design Guide for Precision Vibration and Dynamic Signal Measurement
Design ADAQ7768-1 precision data acquisition channels for vibration and dynamic sensing with the right bandwidth, reference, clock, and layout choices.
Jun 30, 2026
AD5204BRZ10 Design Guide for SPI-Controlled Gain and Offset Calibration
Design AD5204BRZ10 digital potentiometer calibration loops with bounded trim span, safe wiper current, clean SPI routing, and reliable startup codes.
Jun 30, 2026
Why Buy from FindMyChip
About Microchip
Microchip is a leading electronic component manufacturer. FindMyChip sources Microchip ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $0.1911 | $0.19 |
| 25+ | $0.1898 | $4.75 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“We've been using FindMyChip for 2 years. Pricing is consistently 20-30% below Mouser/DigiKey for volume orders.”