NTHS0603N01N1003JR - 100kΩ NTC 0603 3964K SMD Thermistor
MPN: NTHS0603N01N1003JR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.42 | $0.42 |
| 10 | $0.36 | $3.60 |
| 100 | $0.22 | $22.00 |
| 500 | $0.18 | $90.00 |
| 1,000 | $0.15 | $150.00 |
| 5,000 | $0.12 | $600.00 |
NTHS0603N01N1003JR Overview
An NTC (Negative Temperature Coefficient) thermistor is a thermally sensitive resistor whose resistance decreases predictably as temperature rises. The defining parameter is the β (beta) constant, which characterizes the slope of the resistance-temperature curve according to the Steinhart-Hart relationship; a β25/85 value of 3964 K indicates a moderate sensitivity suited to ambient and board-level monitoring across 0 °C to 70 °C, where the part is commonly deployed. NTC thermistors sit within the broader sensor hierarchy of temperature sensor → thermistor → NTC → SMD chip NTC, and are widely preferred over RTDs in cost- and size-sensitive designs.
Key features include 100 kΩ nominal resistance at 25 °C (within a ±5% tolerance band as suggested by the 'J' suffix), a dissipation constant in the 1 mW/°C range, and a thermal time constant on the order of seconds in still air. The 0603 footprint is compatible with standard pick-and-place tooling and EIA 481 tape-and-reel packaging. Operating temperature range is typically -40 °C to +125 °C, allowing deployment in industrial, automotive, and consumer environments where the thermistor is referenced against a known pull-up resistor or ADC reference.
Typical applications include battery pack temperature monitoring, CPU/MCU die or PCB thermal supervision, HVAC inlet/outlet sensing, and precision analog front-ends where the thermistor is paired with a microcontroller's ADC input. The 100 kΩ nominal value pairs cleanly with reference resistors in the same decade, simplifying the look-up-table math in firmware.
When designing with this part, derate power at elevated ambient temperatures and apply a Steinhart-Hart or β-based polynomial for accurate conversion from resistance to temperature across the application range. The 'J' tolerance suffix (±5%) is suitable for general-purpose monitoring; tighter tolerance parts (F = ±1%, G = ±2%) are available in the same NTHS0603 family for instrumentation-grade designs.
Drop-in alternatives for NTHS0603N01N1003JR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
NTHS0603N01N1003JE
✅ Drop-In📋 Reference alternative (not in catalog)
NTHS0603N01N1003JU
✅ Drop-In📋 Reference alternative (not in catalog)
NTHS0603N01N1002JR
✅ Drop-In📋 Reference alternative (not in catalog)
NCP18WF104F03RC
✅ Drop-In📋 Reference alternative (not in catalog)
NTCG163JF103FT1S
✅ Drop-In📋 Reference alternative (not in catalog)
NTHS0603N01N1003JR Maximum Ratings & Electrical Characteristics
| Thermistor Type | NTC |
| Resistance @ 25°C | 100 kΩ |
| Resistance Tolerance | ±5% (J suffix) |
| Beta Value (β25/85) | 3964 K |
| Operating Temperature Range | -40 °C to +125 °C |
| Package / Case | 0603 (1608 Metric) |
| Mounting Type | Surface Mount |
| Termination Style | Solder Pads (Ni barrier, matte Sn finish) |
| Length | 1.6 mm |
| Width | 0.8 mm |
| RoHS Status | Compliant |
| REACH Status | Compliant |
| Lead-Free | Yes |
NTHS0603N01N1003JR Pin Configuration
| Pin 1 | Terminal A — NTC electrode (interchangeable with Terminal B) |
| Pin 2 | Terminal B — NTC electrode (interchangeable with Terminal A) |
Typical Applications
NTHS0603N01N1003JR is suitable for 6 applications: Li-Ion Battery Pack Temperature Monitoring, MCU/PCB Hot-Spot Thermal Supervision, HVAC Inlet/Outlet Air Temperature Sensing, Precision Analog Front-End Temperature Compensation, 3D Printer Hot-End and Bed Temperature Feedback, Wearable Health/Fitness Device Skin Temperature.
Li-Ion Battery Pack Temperature Monitoring
The NTHS0603N01N1003JR is a strong fit for Li-ion battery pack temperature monitoring because its 100 kΩ nominal resistance at 25 °C pairs cleanly with a 100 kΩ reference resistor in a ratiometric ADC divider, eliminating the need for a precision current source. Its -40 °C to +125 °C operating range covers all Li-ion charge, discharge, and thermal-runaway cutoff conditions per JEITA guidelines. Mounted on a flex PCB inside the cell holder, the 0603 footprint fits within 6 mm cell geometries, and the part's small thermal mass tracks cell skin temperature within ~3 seconds. Designers using TI BQ76942 or similar battery monitor ICs can read this NTC via the dedicated thermistor input channel with no firmware glue beyond Steinhart-Hart coefficient conversion. Reference companion MPNs include the BQ76942 (battery monitor) and TPS62840 (low-Iq buck for ADC reference).
Recommended
MCU/PCB Hot-Spot Thermal Supervision
The NTHS0603N01N1003JR provides an inexpensive analog temperature sense point adjacent to an MCU, FPGA, or power MOSFET on densely populated PCBs. Wired as a voltage divider to an MCU ADC with a 100 kΩ pull-up to VCC (3.3 V typical), the divider mid-point voltage swings from ~1.65 V at 25 °C to ~0.4 V at 85 °C, giving a clear monotonic curve that resolves ~0.5 °C per ADC step with a 12-bit converter. The part's β25/85 of 3964 K is well-characterized in firmware libraries, and the 0603 land pattern fits under BGAs or near QFN thermal pads for direct board-temperature monitoring. Reference companion MPNs: STM32F4 (MCU) and LM4040 (ADC voltage reference).
Recommended
HVAC Inlet/Outlet Air Temperature Sensing
In HVAC controllers and air-handling units, the NTHS0603N01N1003JR monitors inlet and outlet air temperatures to drive variable-speed fans and dampers. The 100 kΩ nominal gives high signal swing with low self-heating when excited by 100 µA or less, and the part's response time on a 0603 PCB pad is suitable for airflow in ducts where temperature changes are slow (~seconds). Operating from -40 °C to +125 °C, it handles both outdoor cold-start and warm-supply-air ducts in commercial systems. Compared to digital sensors (e.g. TMP117), this NTC is cheaper and does not require an I2C bus, simplifying EMC-sensitive HVAC board layouts. Reference companion MPNs: PIC18F46K22 (control MCU) and TLP181 (isolated triac driver).
Recommended
Precision Analog Front-End Temperature Compensation
For instrumentation amplifiers, strain-gauge bridges, and precision ADC reference networks, the NTHS0603N01N1003JR enables board-level temperature compensation of drift-sensitive analog paths. Placed near a precision op-amp or reference IC, the NTC output can be read by an MCU and used to apply real-time digital gain/offset correction. Its 100 kΩ impedance is high enough not to load sensitive analog nodes, and the 0603 form factor allows placement directly under the IC it is compensating. Reference companion MPNs: OPA2277 (precision op-amp) and REF5025 (low-drift voltage reference).
Recommended
3D Printer Hot-End and Bed Temperature Feedback
The NTHS0603N01N1003JR is widely deployed in consumer and prosumer 3D printer hot-end and heated-bed temperature monitoring, paired with an op-amp or MCU ADC input. While dedicated 100 kΩ thermistor cartridges (e.g. Semitec 104NT-4-R025H42H) are common in printers, SMD NTCs like this one are preferred for compact board-mount sensing on the print head PCB. The β25/85 of 3964 K requires firmware-table customization but provides reliable readings up to 250 °C extrapolated, with the part itself rated to 125 °C continuous. Reference companion MPNs: ATMEGA2560 (printer MCU) and A4988 (stepper driver for thermal feedback context).
Recommended
Wearable Health/Fitness Device Skin Temperature
In wearable fitness bands and smartwatches, the NTHS0603N01N1003JR provides a low-cost, low-power analog skin temperature channel when paired with an ultra-low-power MCU. With 1.6 mm × 0.8 mm dimensions and <1 mW dissipation, the part fits inside a wristband enclosure against the skin-side flex PCB. The 100 kΩ impedance is compatible with high-impedance nanopower op-amp front-ends, and the part can be duty-cycled (read once per minute) to extend battery life to weeks. Reference companion MPNs: nRF52832 (BLE SoC) and MAX30205 (digital skin-temperature alternative for comparison).
Recommended
Recommended Products Summary
Engineering reference data for NTHS0603N01N1003JR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | NTHS0603N01N1003JE | NTHS0603N01N1003JU | NTHS0603N01N1002JR | NCP18WF104F03RC | NTCG163JF103FT1S |
|---|---|---|---|---|---|---|
| Brand | Vishay | Vishay (same brand) | Vishay (same brand) | Vishay (same brand) | Murata (cross-brand) | TDK (cross-brand) |
| Package | 0603 (1608 Metric) | 0603 (1608 Metric) - same | 0603 (1608 Metric) - same | 0603 (1608 Metric) - same | 0603 (1608 Metric) - same | 0603 (1608 Metric) - same |
| Resistance @ 25°C | 100 kΩ | 100 kΩ | 100 kΩ | 10 kΩ | 100 kΩ | 10 kΩ |
| Beta Value (β25/85) | 3964 K | 3964 K | 3964 K | 3500 K | 4250 K | 3380 K |
| Tolerance | ±5% (J) | ±3% (E) | ±5% (J) | ±5% (J) | ±1% (F) | ±1% (F) |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C |
| Dissipation Constant | ~1 mW/°C | ~1 mW/°C | ~1 mW/°C | ~1 mW/°C | 1 mW/°C | 1 mW/°C |
| RoHS Compliance | Yes | Yes | Yes | Yes | Yes | Yes |
| Approx. Unit Price @ 1k | $0.15 | $0.18 | $0.15 | $0.15 | $0.20 | $0.14 |
Key Differentiators
- Industry-standard 100 kΩ/3964 K pair (vs NCP18WF104F03RC (Murata))
- Wide franchise distribution and stable supply (vs NTCG163JF103FT1S (TDK))
- Lower-cost than digital temperature ICs (vs TMP117 (TI digital sensor))
Design Notes
Use a Steinhart-Hart 3-coefficient polynomial or a β-based equation (1/T = 1/T25 - (1/β)·ln(R/R25)) to convert ADC counts to temperature. Using a simple linear approximation around 25 °C can produce >5 °C error at the 0 °C and 70 °C range endpoints - always validate the firmware conversion table against the datasheet R-T curve.
Self-heating error becomes significant when excitation current exceeds 100 µA in still air. With a 3.3 V supply and 100 kΩ reference, the divider current is 33 µA and self-heating is <0.1 °C. With a 5 V supply and 100 kΩ pull-up, current is 50 µA and self-heating can reach 0.2 °C - design for the worst-case excitation. For pulse-read applications, gate the divider current with a MOSFET to drop self-heating below 0.01 °C.
Place the NTHS0603N01N1003JR close to the temperature-monitoring IC or MCU ADC pin, with a short, direct trace to minimize ADC input leakage. Use a 0.1 µF bypass cap at the MCU ADC reference and keep the NTC traces away from switching power converter nodes. The 0603 land pattern follows the standard IPC-7351 nominal - no special thermal relief is required.
For sensing air temperature rather than PCB temperature, isolate the NTHS0603N01N1003JR thermally from copper pours by using minimal thermal vias under the pads. Excessive copper area will short-circuit the part's response to ambient air and make it track the PCB instead. For sensing PCB hotspot temperature, do the opposite - flood the local copper plane and place the part directly on the flood.
Compliance Information
RoHS compliant per Vishay product page. Lead-free matte-Sn termination. Halogen-free status not stated explicitly in retrieved web data; refer to Vishay compliance letter for verification.
