Product Overview
The Analog Technologies ATH10K1R8B3950K is an ultra-stable axial-leaded thermistor designed for precise temperature sensing. Featuring glass encapsulation for long-term stability and reliability, it offers high accuracy, a quick response time, and a wide operating temperature range. Its compact size and robust construction make it suitable for demanding applications in automotive, industrial, and consumer electronics where cost-effective and dependable temperature measurement is critical.
Product Attributes
- Brand: Analog Technologies, Inc.
- Product Type: Ultra-Stable Axial Leaded Thermistor
- Encapsulation: Glass
- Leads: Tin-plated Copper-Clad Steel Wire
- Certifications: 100% Lead (Pb)-free and RoHS Compliant
- Origin: U. S. A.
Technical Specifications
| Parameter | Symbol | Value |
|---|---|---|
| Nominal Resistance @ 25C | R25 | 10K 1% |
| B Value @ 25C /50C | B25/50 | 3950K 1% |
| Thermistor Diameter | DT | 1.8 0.2mm |
| Thermistor Length | LT | 3.7 0.3mm |
| Lead Diameter | DL | 0.5 0.05mm |
| Lead Length | LL | 28 1mm |
| Dissipation Factor | th | 2mW/C |
| Insulation Resistance | Ris | 500M |
| Maximum Power @ 25C | Pmax | 50mW |
| Time Constant | c | 20s (in still air @5~25C) |
| Operating Temperature Range | -55C to 250C | |
| Stability | <0.1C/year | |
| Response Time | 20s | |
| Resistance Accuracy | 1% |
Applications
The ATH10K1R8B3950K is suitable for use in automotive electronics, industrial electronics, and home appliances. It is widely employed for temperature measurement in electronic circuits, digital thermometers, and other devices requiring precise temperature readings. It also finds use in temperature compensation within electronic circuits, temperature control systems (thermostats, ovens, incubators), thermal protection in power electronics (monitoring transistors, MOSFETs), engine management systems, climate control systems, battery management systems (BMS), and consumer electronics (smartphones, laptops, tablets).
Part Number Convention
ATH10K1R8B3950K
- ATH: Company Code (Analog Technologies, Inc.)
- 10K: Resistance @ 25C (R25 = 10k)
- 1R8: Thermistor Diameter (1.8mm)
- B3950K: B Value (B25/50 = 3950K)
Reliability Data
| No. | Item | Standard Test Conditions and Methods | Requirements |
|---|---|---|---|
| 1 | Terminal Pull Strength and Duration | IEC60068-2-21, Grip thermistor two leads, Pull Strength: 51N, Time Duration: 101s | No Obvious Appearance Damage, R25/R25 2% |
| 2 | Solderability | IEC60068-2-20, Temperature: 245C 5C, Time Duration: 2 ~ 3s | Coverage area 95%. |
| 3 | Withstand Soldering Temperature | IEC60068-2-20, Solder Pot Temperature: 260C 5C, Immerse leads 6mm away from thermistor body, Time Duration: 5 1s | R25/R25 2% |
| 4 | Humidity and Heat Sustainability | IEC60068-2-78, Temperature: 40C 2C, Humidity: 93% 2%, Time Duration: 500hrs | R25/R25 2% |
| 5 | Thermal Cycling Sustainability | IEC60068-2-14, -55C 30min25C 5min250C 30min25C 5min, 5 cycles | R25/R25 2% |
| 6 | High Temperature Storage Sustainability | IEC60068-2-2, Temperature: 250C 5C, Time Duration: 1000hrs | R25/R25 2% |
| 7 | Low Temperature Storage Sustainability | IEC60068-2-1, Temperature: -55C, Time Duration: 1000hrs | R25/R25 2% |
Resistance Temperature Characteristics
B25/50 = ln[RN(25)/ RN(50)]/[1/(25+273.15)-1/(50+273.15)]= 3950K, RN(25) = 10k, | ()() () | 1%
| T (C) | Resistance (k) - MIN Value (RMIN(T)) | Resistance (k) - Nominal Value (RN(T)) | Resistance (k) - MAX Value (RMAX(T)) | Relative Resistance Variation (RT(T)/RN(T)) (%) | Temperature Measurement Error (T(T)) (C) | Temperature Coefficient () (%/C) |
|---|---|---|---|---|---|---|
| -40 | 289.721 | 302.801 | 316.439 | 4.41 | 0.44 | 4.99 |
| -30 | 165.281 | 171.766 | 178.487 | 3.84 | 0.32 | 6.04 |
| -20 | 92.626 | 95.699 | 98.863 | 3.26 | 0.29 | 5.62 |
| -10 | 54.041 | 55.531 | 57.056 | 2.71 | 0.26 | 5.31 |
| 0 | 32.292 | 33.011 | 33.741 | 2.19 | 0.22 | 5.10 |
| 10 | 19.672 | 20.009 | 20.349 | 1.69 | 0.17 | 4.87 |
| 20 | 12.371 | 12.525 | 12.678 | 1.23 | 0.13 | 4.57 |
| 25 | 9.901 | 10.000 | 10.101 | 1.00 | 0.11 | 4.43 |
| 30 | 7.942 | 8.040 | 8.138 | 1.22 | 0.14 | 4.30 |
| 40 | 5.211 | 5.297 | 5.384 | 1.63 | 0.20 | 4.05 |
| 50 | 3.503 | 3.575 | 3.648 | 2.03 | 0.27 | 3.82 |
| 60 | 2.407 | 2.466 | 2.525 | 2.39 | 0.33 | 3.61 |
| 70 | 1.689 | 1.736 | 1.784 | 2.74 | 0.40 | 3.40 |
| 80 | 1.207 | 1.245 | 1.284 | 3.09 | 0.48 | 3.21 |
| 90 | 0.878 | 0.909 | 0.940 | 3.41 | 0.55 | 3.08 |
| 100 | 0.649 | 0.674 | 0.699 | 3.71 | 0.64 | 2.89 |
| 110 | 0.487 | 0.507 | 0.528 | 4.04 | 0.73 | 2.76 |
| 120 | 0.371 | 0.388 | 0.404 | 4.25 | 0.83 | 2.58 |
| 130 | 0.288 | 0.301 | 0.315 | 4.49 | 0.90 | 2.49 |
| 140 | 0.227 | 0.238 | 0.249 | 4.62 | 1.00 | 2.31 |
| 150 | 0.181 | 0.190 | 0.200 | 5.00 | 1.19 | 2.11 |
| 160 | 0.146 | 0.154 | 0.162 | 5.19 | 1.33 | 1.95 |
| 170 | 0.119 | 0.126 | 0.133 | 5.56 | 1.40 | 1.98 |
| 180 | 0.098 | 0.103 | 0.109 | 5.34 | 1.38 | 1.94 |
| 190 | 0.079 | 0.084 | 0.089 | 5.95 | 1.25 | 2.38 |
| 200 | 0.064 | 0.068 | 0.072 | 5.88 | 1.33 | 2.21 |
| 210 | 0.052 | 0.055 | 0.059 | 6.36 | 1.75 | 1.82 |
| 220 | 0.042 | 0.045 | 0.048 | 6.67 | 1.50 | 2.22 |
| 230 | 0.035 | 0.037 | 0.039 | 5.41 | 1.00 | 2.70 |
| 240 | 0.030 | 0.032 | 0.034 | 6.25 | 2.00 | 1.56 |
| 250 | 0.028 | 0.030 | 0.032 | 6.67 | 2.00 | 1.67 |
Storage and Handling Recommendations
Storage:
- Store in original packaging.
- Recommended storage temperature: -25C to +45C.
- Relative humidity: less than 75% average, maximum 95% (no dew precipitation).
- Avoid exposure to heat or direct sunlight.
- Do not store in environments with corrosive gases (SOx, Cl, etc.).
- Use thermistors as soon as possible after opening factory seals.
- For optimal soldering performance, use within 12 months for SMDs and 24 months for leaded components after shipment.
Handling:
- Prevent components from being dropped.
- Do not touch with bare hands; use gloves.
- Prevent contamination of the thermistor surface.
Soldering:
- Use resin-type or non-activated flux.
- Ensure proper preheating to avoid ceramic cracks.
- Avoid rapid cooling by dipping in solvent.
- Completely remove flux residue after soldering.
Notices
Please read and follow all warnings, cautions, and product-specific notes. Product specifications are subject to change without prior notice. ATI warrants products to perform according to specifications for one year from the date of sale, except when damaged due to excessive abuse. Customers are responsible for evaluating product suitability for their applications. ATI assumes no liability for applications assistance or customer product design. All products are sold subject to terms and conditions of sale. ATI does not grant any license under intellectual property rights. ATI retains ownership of all rights for special technologies and designs.
2401121843_ATI-ATH10K1R8B3950K_C20606749.pdf
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