1. Product Brief Describtion
Focusens MFP-2 series temp. sensor is designed especially for flat surface temperature sensing and protection of UPS battery inverterts power stations. Instead of typical 2 wires, the three-wire battery temperature sensor is designed specifically for advanced battery management systems requiring enhanced precision safety and voltage protection.
Unlike traditional two-wire NTC sensors, it features an additional independent grounding wire that isolates the temperature-sensing circuit from high-voltage fluctuations, ensuring stable and accurate temperature readings. The sensor integrates a high-precision NTC thermistor and uses durable PVC, silicone, or Teflon-insulated wires capable of withstanding high temperatures and transient voltage surges. Its metal ring terminal ensures excellent thermal contact and easy installation on battery surfaces.
This upgraded design significantly improves noise immunity, prevents false temperature readings, and enhances overall system protection—making it ideal for EV battery packs, energy-storage systems, power tools, and other high-reliability lithium battery applications.
2. Typical Application:
Battery or Inverterts for household appliances
Portable Outdoor Power Bank
UPS
EV Car BMS
Energy Storage Systems
3. Feature & Advantage:
Feature
| Advantage
|
Third-Wire for Voltage Protection
| More safety and more precision
|
Posibility for Voltage Related
Functions Extension
| Independent safety path that prevents high-voltage intrusion,
leakage, or electrical fluctuations
|
Metal Ring Terminal Construction
| Reliable installation utilizes M6-M12 ring-type metal terminals providing excellent thermal conduction
|
4. Key Parameters:
Typical Values
Item | Parameter |
Sensing Element | NTC Thermistor Typical 10K with various R and B value on request |
Temperature range | -30°C to +105°C ; -40°C to +150°C; -40°C to +200°C |
Response time | Water (0.4m/s) T0.63 ≤ 30 s |
Dissipation Factor | ≥ 2.5mW/°C |
Long-term stability | Drift ≤ 3% after 1000h heat or cold store (80°C / -30°C) |
Dielectric Strength | 1500VAC / 2000V /3000V |
Insulation Resistance | ≥100MΩ 500VDC |
Options Available
Please let Focusens know in case you need the part to be AEC –Q200 or UL1434 Compatible.
5. Size Drawing
Typical Standard Size
Other Typical Options
6. Ordering Guide
| MFP-2 | x | xxx | x | xxx | x | x | x | x |
| -1 | -2 | -3 | -4 | -5 | -6 | -7 | -8 | -9 |
(1) Flat Surface installation MFP-2 type
(2) Sub-class Code for Housings shape
Model D: PVC insulation wire
Model E: Tinned steel wire
Model F: Customer require
(3) Resistance value at 25°C
(4) Resistance tolerance code : (F：±1%, G：±2%, H：±3%, J：±5%, K：±10%)
(5) Beta value
Typical NTC Thermistors for EV Car Battery Application
| R25 | B | Accuracy |
| 10K | B25/85:3435 | Available on conditions |
| 10K | B25/85:3935 |
|
| 10K | B25/50:3950 | 0.5%~5% |
| 100K | B25/50:3950 | (±0.1℃~±2℃) |
| 100K | B25/85:4260 |
|
| 2K-2M | 3900-4600 | on request |
