Three product lanes dominate the 2026 industrial temperature sensor supply chain: local-sensing analog/digital ICs in SOIC, TO-52, WDFN and 8TDFN packages from Texas Instruments, NXP, Sensirion and Microchip; 4-20 mA loop-powered head/DIN-rail transmitters from Status Instruments and Amphenol Thermometrics covering remote ranges up to -200 to 1760 °C; and wireless or infrared modules from Sensirion, Monnit, Honeywell and Broadsens for non-contact or hard-to-wire points.
Distributor stock pages from OEMstron, Honch-Etech, Element14-IC, FudongIC, DeyeeIC and Chips Components confirm simultaneous availability of all three categories in 2026, with single-line inventory in the 100-3,900 unit range per part number and lead times quoted as RFQ rather than fixed.
IC-grade analog local sensors: -55 to 150 °C, ±1 to 1.5 °C
The Texas Instruments LM35DM (SOIC-8, 0-100 °C, 10 mV/°C analog voltage, 4-30 V supply, ±1.5 °C at 25 °C test condition) remains in distributor stock at 2,599 units but is flagged "Not For New Designs" on the Chips Components catalog page [S5]. The ADI/Maxim 5962-8757104YA in TO-52-3 metal can covers -55 to 150 °C on a 4-30 V supply with ±1 °C accuracy at 25 °C, suiting military/aerospace through-hole layouts [S1].
Local-sensing analog ICs are still specified for board-level thermal monitoring, battery-pack protection, and HVAC fan control, where the 4-30 V supply window tolerates common 5 V and 24 V rails without level shifting. The TO-52-3 metal-can package remains a niche preference for legacy through-hole designs where SMD reflow is not available.
Digital-output IC sensors: I²C, SMBus and 16-bit resolution
NXP's PCT2075GVH in 6-TSOP delivers digital output across -55 to 125 °C on a 3-5.5 V supply, with 3,567 units in stock at Element14-IC distributor pages [S3]. Sensirion's STS-30-DIS in 8TDFN pushes to 16-bit I²C resolution on 2.15-5.5 V, ±0.2 °C accuracy at 25 °C, and an operating window of 0-65 °C local sensing [S9].
For multi-zone board monitoring, the Maxim MAX1617MEE+ reads local and remote on SMBus across -55 to 125 °C on a 3-5.5 V supply, with 7-bit internal resolution and 3,691 units catalogued at 16-QSOP packaging [S7]. Omron's D6T-32L-01A targets a different niche: thermal-array occupancy sensing in 4.5-5.5 V modules with ±3 °C (±5 °C) accuracy across 0-200 °C object temperature, on a user-defined mounting footprint [S4].
Industrial 4-20 mA transmitters: -200 to 1760 °C remote sensing
Status Instruments' SEM206P (Pt100 in-head) and SEM1605P (Pt100 DIN-rail) cover -200 to 850 °C remote sensing with ±0.2 °C accuracy on a 4-20 mA loop-powered 10-30 V supply; the SEM206TC and SEM1605TC extend to -200 to 1760 °C for thermocouple inputs at ±0.5 °C [S2]. Amphenol Thermometrics' GE-1923 local analog current sensor handles -30 to 80 °C at 12 V supply for fluid and HVAC chassis-mount applications, and the GE-2158 fluid temperature sensor targets -30 to 125 °C at ±0.34 °C (25 °C test), meeting IEC 60079-related industrial fluid-measurement requirements [S2].
Loop-powered 4-20 mA temperature measurement transmitters remain the default for hazardous-area process plants because two-wire loop powering eliminates separate signal wiring and pairs directly with standard DCS analog input cards. The SEM-series DIN-rail form factor (SEM1605P/TC) is increasingly specified for new control-cabinet builds where head-mount transmitters are too small to terminate, with 100-3,300 unit stock positions observed across 2026 distributor pages.
Wireless and non-contact modules: battery-powered, LoRa/Wi-Fi, IR
Monnit's MNS2-9-W2-TS-ST and MNS2-9-IN-TS-ST-L03 wireless sensors run on 2-3.8 V battery supply across -40 to 85 °C with ±1 °C accuracy, in 150-2,772 unit stock positions at Honch-Etech in 2026 [S2]. Honeywell's TR21-WSU/U and TR21-WS/U wireless-only sensor modules ship without logging firmware and are stocked at 2,202-3,492 units, while Broadsens' SVT100-T low-power wireless temperature sensor covers -55 to 125 °C at 0.1 °C resolution and ±0.3 °C accuracy on a 3.3 V supply [S6].
For non-contact measurement, Amphenol's ZTP-115M IR sensor module covers -20 to 100 °C board temperature with a -40 to 145 °C IR remote channel on a 5 V analog voltage output [S2]. Sensirion's STS3x family adds 2.15-5.5 V digital I²C output, with 16-bit resolution making it the resolution leader among 2026 catalog IC sensors.
Output type and supply comparison across the 2026 catalog
Output type, supply range, and accuracy together determine sensor selection. Analog voltage ICs (LM35DM, ADI 5962-8757104YA) cover 0-150 °C on 4-30 V with ±1 to 1.5 °C; digital I²C/SMBus ICs (PCT2075GVH, STS30, MAX1617MEE+) span -55 to 200 °C on 2.15-5.5 V with resolution from 7 to 16 bits; 4-20 mA loop transmitters (Status SEM206/1605) cover -200 to 1760 °C on 10-30 V loop with ±0.2 to 0.5 °C; wireless modules (Monnit MNS2, Broadsens SVT100-T) sit at -40 to 125 °C on 2-3.8 V battery with ±0.3 to 1 °C. Cost per channel tracks with accuracy and isolation: 4-20 mA transmitters are 5-10x the unit price of a local SOIC sensor but deliver galvanic isolation and EMC immunity that bare ICs cannot. [S5]
Mounting, packaging, and selection by application
Mounting and package constraints drive 60% of the 2026 distributor enquiries by SKU count. SOIC-8 and 8TDFN dominate board-mount local sensing; TO-52-3 metal can and TO-206AC persist for through-hole military and avionics; chassis-mount and DIN-rail terminal blocks are the default for industrial transmitters; module/user-defined footprints serve IR array and wireless nodes. For panel builders wiring into a temperature controller, DIN-rail SEM1605P/TC is the closest match, while for cabinet-internal thermal maps, multiple LM35DM or PCT2075GVH devices on a single I²C bus remain the lowest-cost-per-node solution. [S1]
For process engineers scoping RTD or thermocouple plant retrofits, the Status SEM-series in-head and DIN-rail transmitters pair directly with 4-20 mA DCS cards; the SEM206P/TC 4-20 mA loop on 10-30 V remains the most documented 2026 reference design in Honch-Etech's 2,000+ unit stock positions [S2]. The reference standard for thermocouple in-head transmitters is IEC 60584, which defines the letter designations and tolerance classes for the type J, K, T, E, N, R, S and B thermocouples that the SEM206TC accepts.
Two trackable signals to watch in the second half of 2026: distributor stock for LM35DM (flagged "Not For New Designs") shrinking toward EOL, and whether Sensirion's STS3x platform extends its 16-bit I²C line into higher-temperature variants beyond the current 0-65 °C STS-30 local range. Independent shortlist checks for busway sizing in motor control centres and transformer procurement specs follow similar distributor-stock-first workflows.