Leadless SMD NTC Thermistor R O HNTC0805-503F3950FB Featuring Halogen Free and Lead Free Certification
Product Description
The HNTC0805 Series Chip NTC Thermistor is a leadless, SMD type thermistor designed for high-density mounting. It offers a B constant tolerance of 1% and excellent solderability. With an operating temperature range of -40 to +125, it is RoHS compliant, Lead-Free, and Halogen Free. This thermistor is suitable for a wide range of applications including consumer electronics (mobile phones, wearable devices, TWS headphones), office automation (printers, facsimile, word processors), industrial power supplies, medical electronics, and IoT sensor nodes.
Product Attributes
- Brand: HJC
- Origin: Zhuhai Hongjiacheng Technology co., Ltd
- Certifications: RoHS compliant, Lead-Free, Halogen Free
Technical Specifications
| Parameter | Condition | Value | Unit |
| Rated Zero-Power Resistance | Ta=250.1 | 501% | K |
| B Constant (Material Constant) | 25/50 | 39501% | K |
| Permissible Operating Current | Ta=250.1 | 0.18 | mA |
| Thermal Dissipation Constant | Ta=250.1 | 2.0 | mW/ |
| Thermal Time Constant | Ta=250.1 | <5 | sec |
| Rated Electric Power | Ta=250.1 | 200 | mW |
| Operating Temperature Range | -40 to +125 |
Part Number Code Explanation
H NTC - F F B
HJC Brand Code
Chip NTC Thermistor
Chip Size/package
Rated Zero-Power Resistance: ===
Resistance Tolerance: F % G % H % J%
B Constant
B Constant Tolerance: F % H %
B Constant calculation method: A / B /
Recommended Soldering Conditions
Reflow Soldering Recommendation
| Profile | Condition | Feature |
| Pre-heat Temperature | Min +150, Max +170 | Pre-heat Time 9030 secs. ramp up rate 3/sec. |
| Time above 240 | 20~40 secs | Max |
| Peak Temperature | +26010 secs. | Max |
| Ramp-down Rate | 6/sec. | Max |
| Time 25 to Peak Temp (TP) | 8 min. | Max |
Iron Soldering Recommendation
| Item | Conditions |
| Temperature of Soldering Iron-tip | 280Max |
| Soldering Time | 3 secs. Max |
| Times for iron soldering | 1 time Max |
Packaging Information
| PACKAGE | Part Number | DELIVERY MODE | MPQ(PCS) |
| 0805 | HNTC0805-503F3950FB | 7''REEL | 4,000 |
Physical Dimensions
| Part | Package | L (mm) | W (mm) | H (mm) | L1 (mm) |
| 0805 | 2.000.20 | 1.250.20 | 0.850.20 | 0.50.30 |
Storage Conditions
Storage temperature: -10 to +40
Storage Conditions: Light-proof, Hermetically Sealed, Moisture-proof;
Relative humidity: < 75 % RH
Storage period: The components should be employed within 6 months after delivery.
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