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
What are the key features of MCP9701A-E/TO?
- 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
What is MCP9701A-E/TO used for?
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.
What are the specifications of MCP9701A-E/TO?
| 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 |
Where can I find the MCP9701A-E/TO datasheet?
MCP9701A-E/TO Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP9701A-E/TO?
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.
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| 1+ | $0.1911 | $0.19 |
| 25+ | $0.1898 | $4.75 |
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