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Specifications
Resistance @ 25℃:
2.2kΩ
Power(Watts):
100mW
Operating Temperature:
-40℃~+125℃
Tolerance:
±5%
B Constant (25℃/100℃):
3998K
Steady State Current (Max):
670uA
B Constant (25℃/85℃):
3987K
B Constant (25℃/75℃):
-
B Constant (25℃/50℃):
3950K
B Constant Tolerance:
±3%
Mfr. Part #:
NCP18XW222J03RB
Package:
0603
Key Attributes
Model Number:
NCP18XW222J03RB
Product Description
Negative Temperature Coefficient (NTC) Thermistors
Negative Temperature Coefficient (NTC) thermistors are electronic components designed for temperature sensing and compensation. They are characterized by a decrease in electrical resistance as temperature increases. These thermistors offer excellent solderability and high stability in various application environments, along with superior long-term aging stability and high precision in resistance and B-constants. They are also suitable for reflow soldering. Some series, like the NCP series, are UL/cUL certified.
Product Attributes
- Brand: Murata
- Origin: Downloaded from Murata Manufacturing Co., Ltd. website
- Certifications: UL/cUL (UL1434, File No. E137188 for NCP series)
Technical Specifications
The following tables detail the specifications for various NTC thermistor series. Please note that the PDF catalog contains standard specifications, and it is recommended to confirm product specifications or obtain a specification sheet before ordering.
Surface Mount Type (SMD) Thermistors
| Part Name | Resistance (25C) () | B Constant (25-50C) (K) | B Constant (25-80C) (Ref.) (K) | B Constant (25-85C) (Ref.) (K) | B Constant (25-100C) (Ref.) (K) | Allowable Operating Current (25C) (mA) | Rated Power (25C) (mW) | Standard Dissipation Constant (25C) (mW/C) | Size (L x W) (mm) |
| NCP03XM102p05RL | 1.0k | 3500 1% | 3539 | 3545 | 3560 | 1.00 | 100 | 1 | 0.60 x 0.30 |
| NCP03XM152p05RL | 1.5k | 3500 1% | 3539 | 3545 | 3560 | 0.81 | 100 | 1 | 0.60 x 0.30 |
| NCP03XM222p05RL | 2.2k | 3500 1% | 3539 | 3545 | 3560 | 0.67 | 100 | 1 | 0.60 x 0.30 |
| NCP03XM332p05RL | 3.3k | 3500 1% | 3539 | 3545 | 3560 | 0.55 | 100 | 1 | 0.60 x 0.30 |
| NCP03XM472p05RL | 4.7k | 3500 1% | 3539 | 3545 | 3560 | 0.46 | 100 | 1 | 0.60 x 0.30 |
| NCP03XH682p05RL | 6.8k | 3380 1% | 3428 | 3434 | 3555 | 0.38 | 100 | 1 | 0.60 x 0.30 |
| NCP03XH103F05RL | 10k 1% | 3380 1% | 3428 | 3434 | 3555 | 0.31 | 100 | 1 | 0.60 x 0.30 |
| NCP03XH103p05RL | 10k | 3380 1% | 3428 | 3434 | 3555 | 0.31 | 100 | 1 | 0.60 x 0.30 |
| NCP03XV103p05RL | 10k | 3900 1% | 3930 | 3934 | 3944 | 0.31 | 100 | 1 | 0.60 x 0.30 |
| NCP03XH153p05RL | 15k | 3380 1% | 3428 | 3434 | 3555 | 0.25 | 100 | 1 | 0.60 x 0.30 |
| NCP03XH223p05RL | 22k | 3380 1% | 3428 | 3434 | 3555 | 0.21 | 100 | 1 | 0.60 x 0.30 |
| NCP03WF333p05RL | 33k | 4250 1% | 4303 | 4311 | 4334 | 0.17 | 100 | 1 | 0.60 x 0.30 |
| NCP03WB473p05RL | 47k | 4050 3% | 4101 | 4108 | 4131 | 0.14 | 100 | 1 | 0.60 x 0.30 |
| NCP03WL473p05RL | 47k | 4485 1% | 4537 | 4543 | 4557 | 0.14 | 100 | 1 | 0.60 x 0.30 |
| NCP03WF683p05RL | 68k | 4250 1% | 4303 | 4311 | 4334 | 0.12 | 100 | 1 | 0.60 x 0.30 |
| NCP03WL683p05RL | 68k | 4485 1% | 4537 | 4543 | 4557 | 0.12 | 100 | 1 | 0.60 x 0.30 |
| NCP03WF104F05RL | 100k 1% | 4250 1% | 4303 | 4311 | 4334 | 0.10 | 100 | 1 | 0.60 x 0.30 |
| NCP03WF104p05RL | 100k | 4250 1% | 4303 | 4311 | 4334 | 0.10 | 100 | 1 | 0.60 x 0.30 |
| NCP03WL104p05RL | 100k | 4485 1% | 4537 | 4543 | 4557 | 0.10 | 100 | 1 | 0.60 x 0.30 |
| NCP03WL154p05RL | 150k | 4485 1% | 4537 | 4543 | 4557 | 0.08 | 100 | 1 | 0.60 x 0.30 |
| NCP03WL224p05RL | 220k | 4485 1% | 4537 | 4543 | 4557 | 0.06 | 100 | 1 | 0.60 x 0.30 |
Surface Mount Type (SMD) Thermistors (0402 Size)
| Part Name | Resistance (25C) () | B Constant (25-50C) (K) | B Constant (25-80C) (Ref.) (K) | B Constant (25-85C) (Ref.) (K) | B Constant (25-100C) (Ref.) (K) | Allowable Operating Current (25C) (mA) | Rated Power (25C) (mW) | Standard Dissipation Constant (25C) (mW/C) | Size (L x W) (mm) |
| NCP15XC220p03RC | 22 | 3100 3% | 3126 | 3128 | 3136 | 6.70 | 100 | 1 | 1.0 x 0.5 |
| NCP15XC330p03RC | 33 | 3100 3% | 3126 | 3128 | 3136 | 5.50 | 100 | 1 | 1.0 x 0.5 |
| NCP15XC470p03RC | 47 | 3100 3% | 3126 | 3128 | 3136 | 4.60 | 100 | 1 | 1.0 x 0.5 |
| NCP15XC680p03RC | 68 | 3100 3% | 3126 | 3128 | 3136 | 3.80 | 100 | 1 | 1.0 x 0.5 |
| NCP15XF101p03RC | 100 | 3250 3% | 3282 | 3284 | 3296 | 3.10 | 100 | 1 | 1.0 x 0.5 |
| NCP15XF151p03RC | 150 | 3250 3% | 3282 | 3284 | 3296 | 2.50 | 100 | 1 | 1.0 x 0.5 |
| NCP15XM221p03RC | 220 | 3500 3% | 3539 | 3545 | 3560 | 2.10 | 100 | 1 | 1.0 x 0.5 |
| NCP15XM331p03RC | 330 | 3500 3% | 3539 | 3545 | 3560 | 1.70 | 100 | 1 | 1.0 x 0.5 |
| NCP15XQ471p03RC | 470 | 3650 2% | 3688 | 3693 | 3706 | 1.40 | 100 | 1 | 1.0 x 0.5 |
| NCP15XQ681p03RC | 680 | 3650 3% | 3688 | 3693 | 3706 | 1.20 | 100 | 1 | 1.0 x 0.5 |
| NCP15XQ102p03RC | 1.0k | 3650 2% | 3688 | 3693 | 3706 | 1.00 | 100 | 1 | 1.0 x 0.5 |
| NCP15XW152p03RC | 1.5k | 3950 3% | 3982 | 3987 | 3998 | 0.81 | 100 | 1 | 1.0 x 0.5 |
| NCP15XW222p03RC | 2.2k | 3950 3% | 3982 | 3987 | 3998 | 0.67 | 100 | 1 | 1.0 x 0.5 |
| NCP15XW332p03RC | 3.3k | 3950 3% | 3982 | 3987 | 3998 | 0.55 | 100 | 1 | 1.0 x 0.5 |
| NCP15XM472p03RC | 4.7k | 3500 2% | 3539 | 3545 | 3560 | 0.46 | 100 | 1 | 1.0 x 0.5 |
| NCP15XW472p03RC | 4.7k | 3950 3% | 3982 | 3987 | 3998 | 0.46 | 100 | 1 | 1.0 x 0.5 |
| NCP15XW682p03RC | 6.8k | 3950 3% | 3982 | 3987 | 3998 | 0.38 | 100 | 1 | 1.0 x 0.5 |
| NCP15XH103D03RC | 10k 0.5% | 3380 0.7% | 3428 | 3434 | 3455 | 0.31 | 100 | 1 | 1.0 x 0.5 |
| NCP15XH103F03RC | 10k 1% | 3380 1% | 3428 | 3434 | 3455 | 0.31 | 100 | 1 | 1.0 x 0.5 |
| NCP15XH103p03RC | 10k | 3380 1% | 3428 | 3434 | 3455 | 0.31 | 100 | 1 | 1.0 x 0.5 |
| NCP15XV103p03RC | 10k | 3900 3% | 3930 | 3934 | 3944 | 0.31 | 100 | 1 | 1.0 x 0.5 |
| NCP15XW153p03RC | 15k | 3950 3% | 3982 | 3987 | 3998 | 0.25 | 100 | 1 | 1.0 x 0.5 |
| NCP15XW223p03RC | 22k | 3950 3% | 3982 | 3987 | 3998 | 0.21 | 100 | 1 | 1.0 x 0.5 |
| NCP15WL223p03RC | 22k | 4485 1% | 4537 | 4543 | 4557 | 0.21 | 100 | 1 | 1.0 x 0.5 |
| NCP15WB333p03RC | 33k | 4050 3% | 4101 | 4108 | 4131 | 0.17 | 100 | 1 | 1.0 x 0.5 |
| NCP15WL333p03RC | 33k | 4485 1% | 4537 | 4543 | 4557 | 0.17 | 100 | 1 | 1.0 x 0.5 |
Leaded Type Thermistors
| Part Name | Resistance () | Tolerance | Lead Type | Lead Spacing (mm) | Total Length (mm) | B Constant (K) | Chip Size (LxT) (mm) |
| NXF Series | 10k to 100k | 1% | Tinned copper lead (0.3mm) with polyurethane coating | 4 | 25 to 150 | 3350-3399 (XH), 3900-3949 (XV), 4050-4099 (WB), 4250-4299 (WF) | 1.00 x 0.50 |
| NXR Series | 2.0k to 100k | 1%, 3%, 5% | Tinned copper clad iron lead (0.4mm) / Insulated lead with coating (0.46mm) | 2.5, 5.0 | 10 to 45 | 3350-3399 (XH), 3500-3549 (XM), 3900-3949 (XV), 4050-4099 (WB), 4250-4299 (WF) | 1.00 x 0.50 |
| NT Series (Inrush Current Suppression) | 3 to 10k | 15% | Standard leads | N/A | N/A | N/A | N/A |
Applications
- Temperature compensation for transistors, ICs, and crystal oscillators in mobile communication equipment.
- Temperature sensing for rechargeable batteries.
- Inrush current suppression.
Basic Characteristics
- Zero Power Resistance: Measured at a specified ambient temperature under zero power conditions.
- B Constant: Calculated between two specified ambient temperatures.
- Thermal Diffusion Constant: Power required for a 1C temperature rise due to self-heating.
- Thermal Time Constant: Time required for the thermistor temperature to change by 63.2% of the total temperature change when ambient temperature shifts.
- Rated Power: Electrical power required to raise the thermistor temperature to a specified level due to self-heating at 25C ambient.
- Allowable Operating Current: Current that keeps the thermistor's temperature rise below 1C.
1810311112_muRata-NCP18XW222J03RB_C98101.pdf
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