Grace FENGHUA Brand PCB Mount CMF SMD NTC Thermistor 1005 1608 2012 3216
PDF Specification Download Link: CMF Chip NTC Thermistor.pdf
Description
NTC thermistor is a ceramic semiconductor, which shows non-linear resistance - temperature behavior. CMF series is a SMD(surface mounting device) type NTC thermistor, that is designed for mounting on PCB (printed circuit board).

Part numbering
| CMF | B | 3950 | 103 | J | N | T | |||||
| Chip NTC Thermistor | Size Code | B-value (25/85ºC) | Resistance at 25ºC (Ω) | Tolerance | Termination | Packaging | |||||
| Code | Inches | 3950K | 103 | 10x103 | F | ±1% | P | Pd | B | T | |
| C | 1206 | 104 | 10x104 | G | ±2% | N | Nickel Barrier | Bulk | Tape & Reel | ||
| B | 0805 | H | ±3% | ||||||||
| A | 0603 | J | ±4% | ||||||||
| X | 0402 | K | ±10% | ||||||||
Features
Application
Dimension (mm)

| Size | L (Length) | W (Width) | T (Thickness) | M (Width of termination Point) |
| 0402 (1005) | .04± .006 (1.0± 0.15) | .02± .004 (0.5± 0.10) | .024 max (0.60 max) | .004 min (0.10 min) |
| 0603 (1608) | .063± .006 (1.6± 0.15) | .031± .006 (0.8± 0.15) | .037 max (0.95 max) | .004 min (0.10 min) |
| 0805 (2012) | .08± .008 (2.0± 0.20) | .05± .008 (1.25± 0.2) | .05 max (1.25 max) | .006 min (0.15 min) |
| 1206 (3216) | .126± .008 (3.2± 0.20) | .063± .008 (1.6± 0.20) | .063 max (1.60 max) | .008 min (0.20 min) |
Specification example
| 0402 Series | ||
| Part No. | Resistance at 25°C (KΩ) | B-Constant 25/85°C (KΩ) |
| CMFX3950103 | 10 | 3950 |
| CMFX4050473 | 47 | 4050 |
| CMFX4050104 | 100 | 4050 |
| 0603 Series | ||
| Part No. | Resistance at 25℃ (KΩ) | B-Constant 25/85℃ (KΩ) |
| CMFA3450103 | 10 | 3450 |
| CMFA3970103 | 10 | 3970 |
| CMFA3900223 | 22 | 3900 |
| CMFA3950473 | 47 | 3950 |
| CMF3950104 | 100 | 3950 |
| CMFA3950224 | 220 | 3950 |
| CMFA3550103 | 10 | 3550 |
| CMFA3950683 | 68 | 3950 |
| CMFA4100564 | 560 | 4100 |
| 0805 Series | ||
| Part No. | Resistance at 25℃ (KΩ) | B-Constant 25/85℃ (KΩ) |
| CMFB3435472 | 4.7 | 3435 |
| CMFB3435103 | 10 | 3435 |
| CMFB3550103 | 10 | 3550 |
| CMFB390023 | 22 | 3900 |
| CMFB4000473 | 47 | 4000 |
| CMFB4000104 | 100 | 4000 |
| CMFB3970103 | 10 | 3970 |
| CMFB3200202 | 2 | 3200 |
| CMFB3650153 | 15 | 3650 |
| CMFB4050333 | 33 | 4050 |
| 1206 Series | ||
| Part No. | Resistance at 25℃C (KΩ) | B-Constant 25/50℃ (KΩ) |
| CMFC3200221 | 0.22 | 3200 |
| CMFC3200331 | 0.33 | 3200 |
| CMFC3250471 | 0.47 | 3250 |
| CMFC3250681 | 0.68 | 3250 |
| CMFC3350102 | 1.0 | 3350 |
| CMFC3400222 | 2.2 | 3400 |
| CMFC3400332 | 3.3 | 3400 |
| CMFC3400472 | 4.7 | 3400 |
| CMFC3400682 | 6.8 | 3400 |
| CMFC3500103 | 10 | 3500 |
| CMFC3900103 | 10 | 3900 |
| CMFC3900153 | 15 | 3900 |
| CMFC3950223 | 22 | 3950 |
| CMFC4000333 | 33 | 4000 |
| CMFC4100473 | 47 | 4100 |
| CMFC4200683 | 68 | 4100 |
| CMFC4200104 | 100 | 4200 |
| CMFC4300224 | 220 | 4300 |