CMF Chip NTC Thermistors are miniature, leadless devices designed for surface mount technology (SMT) applications. They offer superior solderability and resistance to soldering heat, making them ideal for both wave and reflow soldering processes. These thermistors are utilized for temperature compensation in various electronic components such as ICs, LCDs, transistors, and crystal oscillators in mobile communication equipment. They also serve as temperature sensors for rechargeable batteries and CPUs, and for temperature compensation in diverse circuit applications.
| Series | Size Code (Inches) | Dimensions (mm) L x W x T (max) | Termination Width (min) | Resistance at 25C (K) | B-Constant (25/85C K) | Part Number Structure | Tolerance | Packaging | |
|---|---|---|---|---|---|---|---|---|---|
| CMF 0402 (1005) | X0402 (J) | 1.0 0.15 x 0.5 0.10 x 0.60 max | 0.10 min | 10, 47, 100 | 3950, 4050 | CMFX3950103_, CMFX4050473_, CMFX4050104_ | N/A | N/A | |
| CMF 0603 (1608) | A0603 (H) | 1.6 0.15 x 0.8 0.15 x 0.95 max | 0.10 max | 10, 22, 47, 100, 220, 68 | 3450, 3970, 3900, 3950, 3550 | CMFA3450103_, CMFA3970103_, CMFA3900223_, CMFA3950473_, CMFA3950104_, CMFA3950224_, CMFA3550103_, CMFA3950683_, CMFA4100564_ | N/A | N/A | |
| CMF 0805 (2012) | B0805 (B) | 2.0 0.20 x 1.25 0.2 x 1.25 max | 0.15 max | 4.7, 10, 10, 22, 47, 100, 10, 2, 15, 33 | 3435, 3550, 3900, 4000, 3970, 3200, 3650, 4050 | CMFB3435472_, CMFB3435103_, CMFB3550103_, CMFB3900223_, CMFB4000473_, CMFB4000104_, CMFB3970103_, CMFB3200202_, CMFB3650153_, CMFB4050333_ | N/A | N/A | |
| CMF 1206 (3216) | C1206 (C) | 3.2 0.20 x 1.6 0.20 x 1.6 max | 0.20 max | 0.22, 0.33, 0.47, 1.0, 2.2, 3.3, 4.7, 6.8, 10, 10, 15, 22, 33, 47, 68, 100, 220 | 3200, 3250, 3350, 3400, 3500, 3900, 3950, 4000, 4100, 4200, 4300 | CMFC3200221_, CMFC3200331_, CMFC3250471_, CMFC3350102_, CMFC3400222_, CMFC3400332_, CMFC3400472_, CMFC3400682_, CMFC3500103_, CMFC3900103_, CMFC3900153_, CMFC3950223_, CMFC4000333_, CMFC4100473_, CMFC4100683_, CMFC4200104_, CMFC4300224_ | N/A | N/A | |
| Part Numbering System: CMF [Series Code] [B-value Code] [Resistance Code] [Tolerance Code] [Termination Code] [Packaging Code] | |||||||||
| Example Part Number Breakdown: CMF B 3950 103 J N T | |||||||||
| B-value (25/85C) Code | Resistance at 25C | Tolerance Code | Termination Code | Packaging Code | |||||
| 103 = 10 x 103 | F = 1% | P = Pd | B = Bulk | ||||||
| 104 = 10 x 104 | G = 2% | N = Nickel Barrier | T = Tape & Reel | ||||||
| H = 3% | |||||||||
| A = 0.1A | |||||||||
| J = 4% | |||||||||
| K = 10% | |||||||||