Guangdong Uchi Electronics Co.,Ltd
Guangdong Uchi Electronics Co.,Ltd Manufactuer of Varistor, Thermistor, Capacitor,Fuse & Resistor since 2006 !
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High Power NTC Thermistor , 10k ohm Thermistor For Lamps / Ballasts
Quick Detail:
• Small Size and fast response
• High Power handling capability
• Fast response to surge current
• High material constant (B value)
• Low residual resistance
• Wide operating temperature range -55 to +200C
• R25 allowable tolerance is ±20%
• Long-term Stability and Reliability
Description:
The MF72 power NTC thermistor is a kind of semiconductor ceramic element that mostly made from transition metal oxide material, and belongs to negative temperature thermistors. When you tune on an electrical equipment ,the surge current can be restrained by a power NTC thermistor connected in series with the power circuit .Because of the continuing action of current, temperature of power NTC thermistor raising, the resistance will rapidly drop to a small value, the consumed power can be ignored. So it can not affect normal operating current. Therefore, using power NTC thermistor is a most effectively amd most brief measure to restrain surge current, protecting electrical equipment from destruction.
Applications:
Can be installed into the power circuits of:
• Power supplies and inverters
• Uninterruptible Power Supplies
• Energy saving lamps
• Electronic Ballasts
• Filament Protection of various types of lamps
• Some types of heaters
• For higher power circuits ask about the MF73
and MF74 series surge suppressors.
Specifications:
Production Sign Explain
Remark:
1. The Max. Steady State Current meets when the decimal expressed with three figures.
Other expressed with the actual value.
2.The Rated Zero-power Resistance meets the decimal or is bigger than is 100Ω when with three expressions, other expressed with two.
Shapec Structure Picture
Main Parameter and Dimensions
Remark: Unless the particular indication , the allowable tolerance of Rated Zero-power Resistance is ±20%.
Unit:mm
| Type | Rated Resistance | (A) | Dmax | Lmin | F±1 | Tmax | d |
| 5D-5 | 5 | 1 | 6.5 | 25 | 5.0/2.5 | 5 | 0.55/0.45 |
| 10D-5 | 10 | 0.7 | 6.5 | 25 | 5.0/2.5 | 5 | 0.55/0.45 |
| 20D-5 | 20 | 0.5 | 6.5 | 25 | 5.0/2.5 | 5 | 0.55/0.45 |
| 5D-7 | 5 | 2 | 8.5 | 25 | 5.0 | 5 | 0.55 |
| 8D-7 | 8 | 1 | 8.5 | 25 | 5.0 | 5 | 0.55 |
| 10D-7 | 10 | 1 | 8.5 | 25 | 5.0 | 5 | 0.55 |
| 12D-7 | 12 | 1 | 8.5 | 25 | 5.0 | 5 | 0.55 |
| 16D-7 | 16 | 0.7 | 8.5 | 25 | 5.0 | 5 | 0.55 |
| 20D-7 | 20 | 0.6 | 8.5 | 25 | 5.0 | 5 | 0.55 |
| 22D-7 | 22 | 0.6 | 8.5 | 25 | 5.0 | 5 | 0.55 |
| 33D-7 | 33 | 0.5 | 8.5 | 25 | 5.0 | 5 | 0.55 |
| 3D-9 | 3 | 4 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 4D-9 | 4 | 4 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 5D-9 | 5 | 3 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 6D-9 | 6 | 2 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 8D-9 | 7 | 2 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 10D-9 | 10 | 2 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 12D-9 | 12 | 1 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 16D-9 | 16 | 1 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 20D-9 | 20 | 1 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 22D-9 | 22 | 1 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 30D-9 | 30 | 1 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 33D-9 | 33 | 1 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 50D-9 | 50 | 1 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 60D-9 | 60 | 0.8 | 10.5 | 25 | 7.5/5.0 | 5.5 | 0.78/0.55 |
| 2.5D-11 | 2.5 | 5 | 12.5 | 25 | 7.5/5.0 | 5.5 | 0.78 |
| 3D-11 | 3 | 5 | 12.5 | 25 | 7.5/5.0 | 5.5 | 0.78 |
| 4D-11 | 4 | 4 | 12.5 | 25 | 7.5/5.0 | 5.5 | 0.78 |
| 5D-11 | 5 | 4 | 12.5 | 25 | 7.5/5.0 | 5.5 | 0.78 |
| 6D-11 | 6 | 3 | 12.5 | 25 | 7.5/5.0 | 5.5 | 0.78 |
| 8D-11 | 8 | 3 | 12.5 | 25 | 7.5/5.0 | 5.5 | 0.78 |
| 10D-11 | 10 | 3 | 12.5 | 25 | 7.5/5.0 | 5.5 | 0.78 |
| 12D-11 | 12 | 2 | 12.5 | 25 | 7.5/5.0 | 5.5 | 0.78 |
| 16D-11 | 16 | 2 | 12.5 | 25 | 7.5/5.0 | 5.5 | 0.78 |
| 20D-11 | 20 | 2 | 12.5 | 25 | 7.5/5.0 | 5.5 | 0.78 |
| 22D-11 | 22 | 2 | 12.5 | 25 | 7.5/5.0 | 5.5 | 0.78 |
| 30D-11 | 30 | 1.5 | 12.5 | 25 | 7.5/5.0 | 5.5 | 0.78 |
| 33D-11 | 33 | 1.5 | 12.5 | 25 | 7.5/5.0 | 5.5 | 0.78 |
| 1.3D-13 | 1.3 | 7 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 1.5D-13 | 1.5 | 6 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 3D-13 | 3 | 6 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 4D-13 | 4 | 5 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 5D-13 | 5 | 5 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 6D-13 | 6 | 4 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 7D-13 | 7 | 4 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 8D-13 | 8 | 4 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 10D-13 | 10 | 4 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 12D-13 | 12 | 3 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 15D-13 | 15 | 3 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 16D-13 | 16 | 3 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 20D-13 | 20 | 3 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 30D-13 | 30 | 2.5 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 47D-13 | 47 | 2 | 14.5 | 25 | 7.5 | 6 | 0.78 |
| 1.3D-15 | 1.3 | 8 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 1.5D-15 | 1.5 | 8 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 3D-15 | 3 | 7 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 5D-15 | 5 | 6 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 6D-15 | 6 | 5 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 7D-15 | 7 | 5 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 8D-15 | 8 | 5 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 10D-15 | 10 | 5 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 12D-15 | 12 | 4 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 15D-15 | 15 | 4 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 16D-15 | 16 | 4 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 20D-15 | 20 | 4 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 30D-15 | 30 | 3 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 33D-15 | 33 | 3 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 47D-15 | 47 | 3 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 50D-15 | 50 | 3 | 16.5 | 25 | 7.5 | 6 | 0.78 |
| 0.7D-20 | 0.7 | 12 | 21.5 | 25 | 10/7.5 | 7 | 1.0 |
| 1.3D-20 | 1.3 | 9 | 21.5 | 25 | 10/7.5 | 7 | 1.0 |
| 2.2D-20 | 2.2 | 8 | 21.5 | 25 | 10/7.5 | 7 | 1.0 |
| 2.5D-20 | 2.5 | 8 | 21.5 | 25 | 10/7.5 | 7 | 1.0 |
| 3D-20 | 3 | 8 | 21.5 | 25 | 10/7.5 | 7 | 1.0 |
| 5D-20 | 5 | 7 | 21.5 | 25 | 10/7.5 | 7 | 1.0 |
| 6D-20 | 6 | 6 | 21.5 | 25 | 10/7.5 | 7 | 1.0 |
| 8D-20 | 8 | 6 | 21.5 | 25 | 10/7.5 | 7 | 1.0 |
| 10D-20 | 10 | 6 | 21.5 | 25 | 10/7.5 | 7 | 1.0 |
| 12D-20 | 12 | 5 | 21.5 | 25 | 10/7.5 | 7 | 1.0 |
| 16D-20 | 16 | 5 | 21.5 | 25 | 10/7.5 | 7 | 1.0 |
| 3D-25 | 3 | 9 | 26.5 | 25 | 10/7.5 | 8 | 1.0 |
| 5D-25 | 5 | 8 | 26.5 | 25 | 10/7.5 | 8 | 1.0 |
| 8D-25 | 8 | 7 | 26.5 | 25 | 10/7.5 | 8 | 1.0 |
| 10D-25 | 10 | 7 | 26.5 | 25 | 10/7.5 | 8 | 1.0 |
Competitive Advantage: