Board Mount Temperature Sensors

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TMP421/TMP422/TMP423 Temperature Sensors

Texas Instruments TMP421/TMP422/TMP423 small high-performance remote temperature monitor with built-in local temperature sensors. The devices add programmable bus addressing to support multiple devices on the same I²C/SMBus. The Texas Instruments TMP421/TMP422/TMP423 series features resistance cancellation, programmable non-ideality factor for improved system accuracy, and diode fault detection to ensure the remote sensor is in working condition and connected correctly. The devices have an onboard local temperature sensor and support three remote temperature sensors. The TMP422-EP devices have gold bond wires, a temperature range of –55 to +105°C, and include a SnPb lead finish.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CAD) Filter the results in the table by unit price based on your quantity.	Qty.	Output Type	Accuracy	Minimum Operating Temperature	Maximum Operating Temperature	Package / Case	Interface Type	Supply Voltage - Min	Supply Voltage - Max	Configuration	Resolution	Shutdown	Mounting Style	Qualification	Packaging
Board Mount Temperature Sensors AEC-Q100 Automotive 1Ch Remote Temperatu A 595-TMP421AQDCNTQ1 TMP421AQDCNRQ1 Texas Instruments 1: $2.78 14,799In Stock	Mfr. Part # TMP421AQDCNRQ1 Mouser Part # 595-TMP421AQDCNRQ1	Texas Instruments	Board Mount Temperature Sensors AEC-Q100 Automotive 1Ch Remote Temperatu A 595-TMP421AQDCNTQ1 Learn More about Texas Instruments ti tmp42 tmp42 q1	Datasheet	14,799In Stock	Cut Tape $2.78 $2.48 $2.22 $2.13 View Reel $1.50 $2.04 $1.81 $1.71 $1.53 $1.50 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Digital	+/- 1 C	- 40 C	+ 125 C	SOT-23-8	2-Wire, I2C, SMBus	2.7 V	5.5 V	Local, Remote	12 bit	Shutdown	SMD/SMT	AEC-Q100	Reel, Cut Tape, MouseReel
Board Mount Temperature Sensors +/-1C Remote and Loc al Temp Sensor A 59 A 595-TMP423BIDCNT TMP423BIDCNR Texas Instruments 1: $2.88 2,516In Stock	Mfr. Part # TMP423BIDCNR Mouser Part # 595-TMP423BIDCNR	Texas Instruments	Board Mount Temperature Sensors +/-1C Remote and Loc al Temp Sensor A 59 A 595-TMP423BIDCNT Learn More about Texas Instruments ti tmp42 tmp42 q1	Datasheet	2,516In Stock	Cut Tape $2.88 $2.56 $2.29 $2.20 View Reel $1.64 $2.10 $1.97 $1.90 $1.64 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Digital	+/- 1 C	- 40 C	+ 125 C	SOT-23-8	2-Wire, I2C, SMBus	2.7 V	5.5 V	Local, Remote	12 bit	Shutdown	SMD/SMT		Reel, Cut Tape, MouseReel
Board Mount Temperature Sensors Remote and Local Tem p Sensor TMP422AMDCNTEP Texas Instruments 1: $13.29 4,518In Stock	Mfr. Part # TMP422AMDCNTEP Mouser Part # 595-TMP422AMDCNTEP	Texas Instruments	Board Mount Temperature Sensors Remote and Local Tem p Sensor Learn More about Texas Instruments ti tmp421 tmp422 tmp423 sensors	Datasheet	4,518In Stock	Cut Tape $13.29 $12.02 $11.55 $10.97 Reel $9.79 View $10.58 $10.24 $9.55 $9.36 MouseReel Available	Min.: 1 Mult.: 1 : 250	Digital	+/- 1 C	- 55 C	+ 125 C	SOT-23-8	2-Wire, I2C, SMBus	2.7 V	5.5 V	Local, Remote	12 bit	Shutdown	SMD/SMT		Reel, Cut Tape, MouseReel
Board Mount Temperature Sensors +/-1degC Remote & Lo cal Temp Sensor A 5 A 595-TMP421YZDT TMP421YZDR Texas Instruments 1: $1.76 2,818In Stock	Mfr. Part # TMP421YZDR Mouser Part # 595-TMP421YZDR	Texas Instruments	Board Mount Temperature Sensors +/-1degC Remote & Lo cal Temp Sensor A 5 A 595-TMP421YZDT Learn More about Texas Instruments ti tmp42 tmp42 q1	Datasheet	2,818In Stock	Cut Tape $1.76 $1.56 $1.39 $1.32 View Reel $1.06 $1.27 $1.18 $1.13 $1.06 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Digital	+/- 1 C	- 40 C	+ 125 C		2-Wire, I2C, SMBus	2.7 V	5.5 V	Local, Remote	12 bit	Shutdown	SMD/SMT		Reel, Cut Tape, MouseReel
Board Mount Temperature Sensors +/-1 degreeC Remote Local Temp Sensor A A 595-TMP422AIDCNT TMP422AIDCNR Texas Instruments 1: $2.88 334In Stock 15,000On Order	Mfr. Part # TMP422AIDCNR Mouser Part # 595-TMP422AIDCNR	Texas Instruments	Board Mount Temperature Sensors +/-1 degreeC Remote Local Temp Sensor A A 595-TMP422AIDCNT Learn More about Texas Instruments ti tmp42 tmp42 q1	Datasheet	334In Stock 15,000On Order On Order Ship Dates Mfr. #: TMP422AIDCNR Stock: 334 Can Ship Immediately On Order: 9,000 Expected 2027-02-18 6,000 Expected 2027-03-04 Factory Lead-Time: 16 Weeks	Cut Tape $2.88 $2.55 $2.29 $2.19 View Reel $1.74 $2.09 $1.83 $1.76 $1.74 $1.74 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Digital	+/- 1 C	- 40 C	+ 125 C	SOT-23-8	2-Wire, I2C, SMBus	2.7 V	5.5 V	Local, Remote	12 bit	Shutdown	SMD/SMT		Reel, Cut Tape, MouseReel
Board Mount Temperature Sensors AEC-Q100 Automotive 2Ch Remote Temperatu A 595-TMP422AQDCNTQ1 TMP422AQDCNRQ1 Texas Instruments 1: $3.77 705In Stock 3,000Expected 2027-02-11	Mfr. Part # TMP422AQDCNRQ1 Mouser Part # 595-TMP422AQDCNRQ1	Texas Instruments	Board Mount Temperature Sensors AEC-Q100 Automotive 2Ch Remote Temperatu A 595-TMP422AQDCNTQ1 Learn More about Texas Instruments ti tmp42 tmp42 q1	Datasheet	705In Stock 3,000Expected 2027-02-11	Cut Tape $3.77 $3.34 $3.01 $2.62 View Reel $1.79 $2.43 $2.15 $1.99 $1.84 $1.79 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Digital	+/- 1 C	- 40 C	+ 125 C	SOT-23-8	2-Wire, I2C, SMBus	2.7 V	5.5 V	Local, Remote	12 bit	Shutdown	SMD/SMT	AEC-Q100	Reel, Cut Tape, MouseReel
Board Mount Temperature Sensors +/-1C Remote and Loc al Temp Sensor A 59 A 595-TMP423AIDCNT TMP423AIDCNR Texas Instruments 1: $2.88 2,981Expected 2026-11-12	Mfr. Part # TMP423AIDCNR Mouser Part # 595-TMP423AIDCNR	Texas Instruments	Board Mount Temperature Sensors +/-1C Remote and Loc al Temp Sensor A 59 A 595-TMP423AIDCNT Learn More about Texas Instruments ti tmp42 tmp42 q1	Datasheet	2,981Expected 2026-11-12	Cut Tape $2.88 $2.56 $2.29 $2.20 View Reel $1.64 $2.10 $1.89 $1.79 $1.70 $1.64 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Digital	+/- 1 C	- 40 C	+ 125 C	SOT-23-8	2-Wire, I2C, SMBus	2.7 V	5.5 V	Local, Remote	12 bit	Shutdown	SMD/SMT		Reel, Cut Tape, MouseReel
Board Mount Temperature Sensors AEC-Q100 Automotive 3Ch Remote Temperatu A 595-TMP423AQDCNTQ1 TMP423AQDCNRQ1 Texas Instruments 1: $3.72 1,096In Stock	Mfr. Part # TMP423AQDCNRQ1 Mouser Part # 595-TMP423AQDCNRQ1	Texas Instruments	Board Mount Temperature Sensors AEC-Q100 Automotive 3Ch Remote Temperatu A 595-TMP423AQDCNTQ1 Learn More about Texas Instruments ti tmp42 tmp42 q1	Datasheet	1,096In Stock	Cut Tape $3.72 $3.57 $3.31 $3.17 View Reel $1.92 $3.12 $1.97 $1.92 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Digital	+/- 1 C	- 40 C	+ 125 C	SOT-23-8	2-Wire, I2C, SMBus	2.7 V	5.5 V	Local, Remote	12 bit	Shutdown	SMD/SMT	AEC-Q100	Reel, Cut Tape, MouseReel
Board Mount Temperature Sensors +/-1degC Rem and Tem p Sensor A 595-TMP4 A 595-TMP421AIDCNT TMP421AIDCNR Texas Instruments 1: $2.10 14,860Expected 2027-01-14	Mfr. Part # TMP421AIDCNR Mouser Part # 595-TMP421AIDCNR	Texas Instruments	Board Mount Temperature Sensors +/-1degC Rem and Tem p Sensor A 595-TMP4 A 595-TMP421AIDCNT Learn More about Texas Instruments ti tmp421 tmp422 tmp423 sensors	Datasheet	14,860Expected 2027-01-14	Cut Tape $2.10 $1.86 $1.66 $1.58 View Reel $1.14 $1.53 $1.32 $1.25 $1.19 $1.14 MouseReel Available	Min.: 1 Mult.: 1 : 3,000	Digital	+/- 1 C	- 40 C	+ 125 C	SOT-23-8	2-Wire, I2C, SMBus	2.7 V	5.5 V	Local, Remote	12 bit	Shutdown	SMD/SMT		Reel, Cut Tape, MouseReel
Board Mount Temperature Sensors Remote and Local Tem p Sensor A 595-TMP4 A 595-TMP422AMDCNTEP V62/11618-01XE Texas Instruments 250: $9.46 Non-Stocked Lead-Time 26 Weeks	Mfr. Part # V62/11618-01XE Mouser Part # 595-V62/11618-01XE	Texas Instruments	Board Mount Temperature Sensors Remote and Local Tem p Sensor A 595-TMP4 A 595-TMP422AMDCNTEP	Datasheet	Non-Stocked Lead-Time 26 Weeks	Reel $9.46	Min.: 250 Mult.: 250 : 250	Digital	+/- 1 C	- 55 C	+ 125 C	SOT-23-8	2-Wire, I2C, SMBus	2.7 V	5.5 V	Local, Remote		Shutdown	SMD/SMT		Reel

TMP421/TMP422/TMP423 Temperature Sensors

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