Model:MF5A-5
Key Feature:
MOQ(Standard):2000 pcs
MOQ(Customized):TBD
1. Product Brief Describtion
MF5A-5 Series radial leaded bead thermistor is epoxy resin coating with insulation lead wires, leads gauge and length are flex adjustable in reasonable range and different insulation materials like PVC PVDF FEP PFA available as zipcord or single configuration. Temperature measuring accuracy from typical ± 0.2°C at room temperature points to ± 0.2°C in 25-60°C ranging interchangeable high precision NTC are more available than NTCs of glass sealing and other encapsulation types. This series thermistor have various subdivisions into according to difference in size of lead wire and part configuration.
2. Typical Application
Room Thermostat or temperature controlling board
In car air or seat wheel interior comfortable temperature monitor
Medical Lab Meters and Instruments
Human or Animal Body Temperature Monitor
Auto Parts Temperature Sensing and Protection
3. Feature & Advantage
| Feature | Advantage |
l Radial tin plating steel lead wire with black epoxy resin coating as standard | Cost Saving |
| Wide range of resistance and B value | Extensively used under varisous conditions |
| Precision Size and configurations flexible adjusted | Custom design easier available |
4. Key Parameters
Typical Values:
| Item | Temperature |
| Temperature range | -40°C to +125°C |
| Response time | Water (0.4m/s) T0.63 ≤ 7s |
| Dissipation factor | ≥ 2mW/°C |
| Long-term stability | Drift ≤ 3% after 1000h heat or cold store (80°C / -30°C) |
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

| Code | DMAX | L1MAX | L2MIN | L 3 ±1 | d ± 0.05 | F ± 0.05 |
| 5T | 3 | 5 | decided by user | 5 | 0.25 | 2 |
| 5P | 4 | 5.5 | decided by user | 5 | 0.32 | 2.5 |
Options Available Notice
(1) Epoxy bead diameter ranges from 1.8-3.5mm in close relate with lead wire gauge
(2) Lead wire gauge from AWG32 to AWG26.
(3) Single or stranded lead wire conductor typical material Cu/Sn, with variety custom materials like Cu/Ag, Ni/Ag etc .
(4) Color of lead wire and epoxy bead various on request
(5) Part total length minimum 20mm, maximum 3m theoretically
6. Ordering Guide
| MF5A-5 | x | xxx | x | xxxx |
| -1 | -2 | -3 | -4 | -5 |
(1) Epoxy coating thermistor MF5A series
(2) Lead wire style code :
Model 2/3: Tin. Plated copper wire
Model 4: Enameled wire
Model 5: High temperature Teflon wire
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
7. Technical Details
| Part No. | Rated Resistance | B Value | Rated Power (mW) | Disst. Coef. | Themal time Constant (S) | Operating |
| R25 | (25/50°C) | (mW/°C) | Temp. | |||
| (°C) | ||||||
| MF5A-□ □□□3200 | 0.1~20 | 3200 | ≤50 | ≥2.0 | ≤7 | -40~+125°C |
| MF5A-□ □□□3270 | 0.2~20 | 3270 | In Still Air | In Still Air | ||
| MF5A-□ □□□3380 | 0.5~50 | 3380 | ||||
| MF5A-□ □□□3470 | 0.5~50 | 3470 | ||||
| MF5A-□□□□3600 | 1~100 | 3600 | ||||
| MF5A-□□□□3950 | 5~100 | 3950 | ||||
| MF5A-□□□□4000 | 5~100 | 4000 | ||||
| MF5A-□□□□4050 | 5~200 | 4050 | ||||
| MF5A-□ □□□4150 | 10~250 | 4150 | ||||
| MF5A-□□□□4300 | 20~500 | 4300 | ||||
| MF5A-□□□4500 | 20~500 | 4500 |
Notes:
The 1st □ fills with code of dimension.
The 2nd - 3rd □ fills with rated resistance.
The 4th □ fills with its precision symbol.
B value (25/50°C) tolerance: ±1%.
Default resistance tolerance: ±1%.
Consult Focusens if you did not find exact R&B value in line with your design .
Room Thermostat or temperature controlling board
In car air or seat wheel interior comfortable temperature monitor
Medical Lab Meters and Instruments
Human or Animal Body Temperature Monitor
Auto Parts Temperature Sensing and Protection
| Feature | Advantage |
l Radial tin plating steel lead wire with black epoxy resin coating as standard | Cost Saving |
| Wide range of resistance and B value | Extensively used under varisous conditions |
| Precision Size and configurations flexible adjusted | Custom design easier available |
Typical Values:
| Item | Temperature |
| Temperature range | -40°C to +125°C |
| Response time | Water (0.4m/s) T0.63 ≤ 7s |
| Dissipation factor | ≥ 2mW/°C |
| Long-term stability | Drift ≤ 3% after 1000h heat or cold store (80°C / -30°C) |
Options Available:
Please let Focusens know in case you need the part to be AEC –Q200 or UL1434 Compatible.
Typical Standard Size

| Code | DMAX | L1MAX | L2MIN | L 3 ±1 | d ± 0.05 | F ± 0.05 |
| 5T | 3 | 5 | decided by user | 5 | 0.25 | 2 |
| 5P | 4 | 5.5 | decided by user | 5 | 0.32 | 2.5 |
Options Available Notice
(1) Epoxy bead diameter ranges from 1.8-3.5mm in close relate with lead wire gauge
(2) Lead wire gauge from AWG32 to AWG26.
(3) Single or stranded lead wire conductor typical material Cu/Sn, with variety custom materials like Cu/Ag, Ni/Ag etc .
(4) Color of lead wire and epoxy bead various on request
(5) Part total length minimum 20mm, maximum 3m theoretically
| MF5A | x | xxx | x | xxxx |
| -1 | -2 | -3 | -4 | -5 |
(1) Epoxy coating thermistor MF5A series
(2) Lead wire style code :
Model 2/3: Tin. Plated copper wire
Model 4: Enameled wire
Model 5: High temperature Teflon wire
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
| Part No. | Rated Resistance | B Value | Rated Power (mW) | Disst. Coef. | Themal time Constant (S) | Operating |
| R25 | (25/50°C) | (mW/°C) | Temp. | |||
| (°C) | ||||||
| MF5A-□ □□□3200 | 0.1~20 | 3200 | ≤50 | ≥2.0 | ≤7 | -40~+125°C |
| MF5A-□ □□□3270 | 0.2~20 | 3270 | In Still Air | In Still Air | ||
| MF5A-□ □□□3380 | 0.5~50 | 3380 | ||||
| MF5A-□ □□□3470 | 0.5~50 | 3470 | ||||
| MF5A-□□□□3600 | 1~100 | 3600 | ||||
| MF5A-□□□□3950 | 5~100 | 3950 | ||||
| MF5A-□□□□4000 | 5~100 | 4000 | ||||
| MF5A-□□□□4050 | 5~200 | 4050 | ||||
| MF5A-□ □□□4150 | 10~250 | 4150 | ||||
| MF5A-□□□□4300 | 20~500 | 4300 | ||||
| MF5A-□□□4500 | 20~500 | 4500 |
Notes:
The 1st □ fills with code of dimension.
The 2nd - 3rd □ fills with rated resistance.
The 4th □ fills with its precision symbol.
B value (25/50°C) tolerance: ±1%.
Default resistance tolerance: ±1%.
Consult Focusens if you did not find exact R&B value in line with your design .




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