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Surge Current Suppression Power NTC Thermistor 3D-9 3OHM 4A For USB Power Delivery Adapter
I Description Of The Power NTC Thermistor 3D-9 3OHM 4A
NTC or Negative Temperature Coefficient Thermistors are typically used for in-rush current limiting and
sensing applications. (As and NTC thermistor temperature increases its resistance decreses.) For in-rush
applications this attribute is used to reduce current surges to circuits thereby reducing the probability to
tripped crcuite breakers and blown fuses or damage to motors or filaments.
II Size Of The Power NTC Thermistor 3D-9 3OHM 4A (mm)
| Marking |
NTC 3D-9 |
| D | less than 11mm |
| T | less than 6.0mm |
| F | 7.5+/-1.0mm |
| d | 0.75+/-0.06mm |
| L | 25mm min |
| Coating | PF Resin |
| Color | Black |
| Lead | Tin Plated Steel Wire |
| Lead Shape | Informing |
III Electrical Parameters Of The Power NTC Thermistor 3D-9 3OHM 4A
| Rated Zero-Power Resistance | 3 Ohm |
| Material Constant B25/85 | 2700 K |
| Max. Steady State Current | 4A |
| Thermal Dissipation Constant | More than 11mW/°C |
| Thermal Time Constant | Less than 35sec |
| Operating Temperature Range | -40~+170C |
IV Working Temperature Of The Power NTC Thermistor 3D-9 3OHM 4A
| NO. | R25(Ω) | (Operating Temp.℃) | NO. | R25(Ω) | (Operating Temp.(℃) | NO. | R25(Ω) | (Operating Temp.(℃) |
| 3D-9 | 3 | -40~+170℃ | 16D-9 | 16 | -40~+170℃ | 60D-9 | 60 | -40~+170℃ |
| 4D-9 | 4 | -40~+170℃ | 20D-9 | 20 | -40~+170℃ | 62D-9 | 62 | -40~+170℃ |
| 5D-9 | 5 | -40~+170℃ | 22D-9 | 22 | -40~+170℃ | 80D-9 | 80 | -40~+170℃ |
| 6D-9 | 6 | -40~+170℃ | 30D-9 | 30 | -40~+170℃ | 82D-9 | 82 | -40~+170℃ |
| 8D-9 | 8 | -40~+170℃ | 33D-9 | 33 | -40~+170℃ | 100D-9 | 100 | -40~+170℃ |
| 10D-9 | 10 | -40~+170℃ | 47D-9 | 47 | -40~+170℃ | 120D-9 | 120 | -40~+170℃ |
| 12D-9 | 12 | -40~+170℃ | 50D-9 | 50 | -40~+170℃ | 200D-9 | 200 | -40~+170℃ |
| Size | Operating Temperature Range |
| φ5mm | -40℃ ~ 155℃ |
| φ7mm/φ9mm/φ11mm | -40℃ ~ 175℃ |
| φ13mm/φ15mm/φ20mm | -40℃ ~ 200℃ |
V Series Specification Of The Power NTC Thermistor 3D-9 3OHM 4A
| Part NO. | R25 (Ω) |
Max. Steady State Current (A) |
Approx.R of Max.Cur (Ω) |
Dissi,Coef. (mW/℃) |
Thermal time Constant (S) |
Max. Load Capacitance in uF |
Operating Temp. |
|
| 120 VAC | 240 VAC | |||||||
| MF72-5D5 | 5 | 1 | 0.353 | 6 | 20 | 188 | 47 | -55 to +170 |
| MF72-10D5 | 10 | 0.7 | 0.771 | 6 | 20 | 188 | 47 | |
| MF72-60D5 | 60 | 0.3 | 1.878 | 6 | 18 | 188 | 47 | |
| MF72-200D5 | 200 | 0.1 | 18.70 | 6 | 18 | 88 | 22 | |
| MF72-5D7 | 5 | 2 | 0.283 | 10 | 30 | 224 | 56 | |
| MF72-8D7 | 8 | 1 | 0.539 | 9 | 28 | 224 | 56 | |
| MF72-10D7 | 10 | 1 | 0.616 | 9 | 27 | 224 | 56 | |
| MF72-12D7 | 12 | 1 | 0.816 | 9 | 27 | 224 | 56 | |
| MF72-16D7 | 16 | 0.7 | 1.003 | 9 | 27 | 224 | 56 | |
| MF72-22D7 | 22 | 0.6 | 1.108 | 9 | 27 | 224 | 56 | |
| MF72-33D7 | 33 | 0.5 | 1.485 | 10 | 28 | 188 | 47 | |
| MF72-200D7 | 200 | 0.2 | 11.65 | 11 | 28 | 188 | 47 | |
| MF72-3D9 | 3 | 4 | 0.120 | 11 | 35 | 272 | 68 | |
| MF72-4D9 | 4 | 3 | 0.190 | 11 | 35 | 272 | 68 | |
| MF72-5D9 | 5 | 3 | 0.210 | 11 | 34 | 272 | 68 | |
| MF72-6D9 | 6 | 2 | 0.315 | 11 | 34 | 272 | 68 | |
| MF72-8D9 | 8 | 2 | 0.400 | 11 | 32 | 400 | 100 | |
| MF72-10D9 | 10 | 2 | 0.458 | 11 | 32 | 400 | 100 | |
| MF72-12D9 | 12 | 1 | 0.652 | 11 | 32 | 400 | 100 | |
| MF72-16D9 | 16 | 1 | 0.802 | 11 | 31 | 400 | 100 | |
| MF72-20D9 | 20 | 1 | 0.864 | 11 | 30 | 600 | 150 | |
| MF72-22D9 | 22 | 1 | 0.950 | 11 | 30 | 600 | 150 | |
| MF72-30D9 | 30 | 1 | 1.022 | 11 | 30 | 600 | 150 | |
| MF72-33D9 | 33 | 1 | 1.124 | 11 | 30 | 600 | 150 | |
| MF72-50D9 | 50 | 1 | 1.252 | 11 | 30 | 600 | 150 | |
| MF72-60D9 | 60 | 0.8 | 1.502 | 11 | 30 | 600 | 150 | |
| MF72-80D9 | 80 | 0.8 | 2.010 | 11 | 30 | 272 | 68 | |
| MF72-120D9 | 120 | 0.8 | 3.015 | 11 | 30 | 272 | 68 | |
| MF72-200D9 | 200 | 0.5 | 5.007 | 11 | 32 | 188 | 47 | |
| MF72-400D9 | 400 | 0.2 | 30.30 | 11 | 32 | 188 | 47 | |
| MF72-2.5D11 | 2.5 | 5 | 0.095 | 13 | 43 | 600 | 150 | |
| MF72-3D11 | 3 | 5 | 0.100 | 13 | 43 | 600 | 150 | |
| MF72-4D11 | 4 | 4 | 0.150 | 13 | 44 | 600 | 150 | |
| MF72-5D11 | 5 | 4 | 0.156 | 13 | 45 | 600 | 150 | |
| MF72-6D11 | 6 | 3 | 0.240 | 13 | 45 | 800 | 220 | |
| MF72-8D11 | 8 | 3 | 0.255 | 14 | 47 | 800 | 220 | |
| MF72-10D11 | 10 | 3 | 0.275 | 14 | 47 | 800 | 220 | |
| MF72-12D11 | 12 | 2 | 0.462 | 14 | 48 | 800 | 220 | |
| MF72-16D11 | 16 | 2 | 0.470 | 14 | 50 | 800 | 220 | |
| MF72-20D11 | 20 | 2 | 0.512 | 15 | 52 | 800 | 220 | |
| MF72-22D11 | 22 | 2 | 0.563 | 15 | 52 | 800 | 220 | |
| MF72-30D11 | 30 | 1.5 | 0.667 | 15 | 52 | 800 | 220 | |
| MF72-33D11 | 33 | 1.5 | 0.734 | 15 | 52 | 800 | 220 | |
| MF72-50D11 | 50 | 1.5 | 1.021 | 15 | 52 | 800 | 220 | |
| MF72-60D11 | 60 | 1.5 | 1.215 | 15 | 52 | 800 | 220 | |
| MF72-80D11 | 80 | 1.2 | 1.656 | 15 | 52 | 600 | 150 | |
| MF72-1.3D13 | 1.3 | 7 | 0.062 | 13 | 60 | 880 | 220 | |
| MF72-1.5D13 | 1.5 | 7 | 0.073 | 13 | 60 | 880 | 220 | |
| MF72-2.5D13 | 2.5 | 6 | 0.088 | 13 | 60 | 880 | 220 | |
| MF72-3D13 | 3 | 6 | 0.092 | 14 | 60 | 880 | 220 | |
| MF72-4D13 | 4 | 5 | 0.120 | 15 | 67 | 880 | 220 | |
| MF72-5D13 | 5 | 5 | 0.125 | 15 | 68 | 880 | 220 | |
| MF72-6D13 | 6 | 4 | 0.170 | 15 | 65 | 880 | 220 | |
| MF72-7D13 | 7 | 4 | 0.188 | 15 | 65 | 1320 | 330 | |
| MF72-8D13 | 8 | 4 | 0.194 | 15 | 60 | 1320 | 330 | |
| MF72-10D13 | 10 | 4 | 0.206 | 15 | 65 | 1320 | 330 | |
| MF72-12D13 | 12 | 3 | 0.316 | 16 | 65 | 1320 | 330 | |
| MF72-15D13 | 15 | 3 | 0.335 | 16 | 60 | 1320 | 330 | |
| MF72-16D13 | 16 | 3 | 0.338 | 16 | 60 | 1320 | 330 | |
| MF72-20D13 | 20 | 3 | 0.372 | 16 | 65 | 1320 | 330 | |
| MF72-30D13 | 30 | 2.5 | 0.517 | 16 | 65 | 1320 | 330 | |
| MF72-47D13 | 47 | 2 | 0.810 | 17 | 65 | 880 | 220 | |
| MF72-120D13 | 120 | 1.2 | 2.124 | 16 | 65 | 880 | 220 | |
| MF72-1.3D15 | 1.3 | 8 | 0.048 | 18 | 68 | 1320 | 330 | |
| MF72-1.5D15 | 1.5 | 8 | 0.052 | 19 | 69 | 1320 | 330 | |
| MF72-3D15 | 3 | 7 | 0.075 | 18 | 76 | 1320 | 330 | |
| MF72-5D15 | 5 | 6 | 0.112 | 20 | 76 | 1880 | 470 | |
| MF72-6D15 | 6 | 5 | 0.155 | 20 | 80 | 1880 | 470 | |
| MF72-7D15 | 7 | 5 | 0.173 | 20 | 80 | 1880 | 470 | |
| MF72-8D15 | 8 | 5 | 0.178 | 20 | 80 | 1880 | 470 | |
| MF72-10D15 | 10 | 5 | 0.180 | 20 | 75 | 1880 | 470 | |
| MF72-12D15 | 12 | 4 | 0.250 | 20 | 75 | 1880 | 470 | |
| MF72-15D15 | 15 | 4 | 0.268 | |||||
