Product Overview
The SMD-2522 Series is a range of epoxy-encapsulated SMD NTC thermistors designed for circuit protection and temperature sensing applications. These thermistors feature advanced encapsulation technology with UL94-V0 rated materials, offering a compact size, small volume, and space-saving design. They provide superior performance in high-temperature and high-humidity environments, along with strong surge suppression capabilities. Packaged in SMD tape reels, they are suitable for lead-free reflow/wave soldering and automatic pick-and-place mounting. Key applications include industrial equipment, communication devices, consumer electronics, and automotive electronics.
Product Attributes
- Brand: Songtian ()
- Series: SMD-2522
- Encapsulation Material: Meets UL94-V0
- Packaging: SMD Tape Reel
- Soldering Compatibility: Lead-free reflow/wave soldering
- Origin: SHANTOU FREE TRADE ZONE SONGTIAN ELECTRONIC TECHNOLOGY CO.,LTD
Technical Specifications
| Model | Nominal Zero-Power Resistance @ 25 () | Max. Steady State Current @ 25 (A) | Max. Residual Resistance @ 25 under Max. Steady State Current () | B Value (K) 10% | Thermal Time Constant (S) | Thermal Dissipation Factor (mW/) | Operating Temperature Range () |
|---|---|---|---|---|---|---|---|
| SMDNTC2522N2R504** | 2.5 | 4 | 0.113 | 2600 | <35 | >11 | -40175 |
| SMDNTC2522N03004** | 3 | 4 | 0.100 | 2600 | <35 | >11 | -40175 |
| SMDNTC2522N04003** | 4 | 3 | 0.150 | 2600 | <35 | >11 | -40175 |
| SMDNTC2522N05003** | 5 | 3 | 0.156 | 2800 | <34 | >11 | -40175 |
| SMDNTC2522N06002** | 6 | 2 | 0.240 | 2800 | <34 | >11 | -40175 |
| SMDNTC2522N6R802** | 6.8 | 2 | 0.245 | 2800 | <34 | >11 | -40175 |
| SMDNTC2522N07002** | 7 | 2 | 0.2824 | 2800 | <34 | >11 | -40175 |
| SMDNTC2522N08002** | 8 | 2 | 0.255 | 2800 | <32 | >11 | -40175 |
| SMDNTC2522N10002** | 10 | 2 | 0.275 | 2800 | <32 | >11 | -40175 |
| SMDNTC2522N12001** | 12 | 1 | 0.462 | 2800 | <32 | >11 | -40175 |
| SMDNTC2522N13001** | 13 | 1 | 0.465 | 2800 | <32 | >11 | -40175 |
| SMDNTC2522N15001** | 15 | 1 | 0.468 | 2800 | <30 | >11 | -40175 |
| SMDNTC2522N16001** | 16 | 1 | 0.470 | 2800 | <30 | >11 | -40175 |
| SMDNTC2522N18001** | 18 | 1 | 0.495 | 3000 | <30 | >11 | -40175 |
| SMDNTC2522N20001** | 20 | 1 | 0.512 | 3000 | <30 | >11 | -40175 |
| SMDNTC2522N22001** | 22 | 1 | 0.563 | 3000 | <30 | >11 | -40175 |
| SMDNTC2522N25001** | 25 | 1 | 0.623 | 3000 | <30 | >11 | -40175 |
| SMDNTC2522N30001** | 30 | 1 | 0.667 | 3000 | <30 | >11 | -40175 |
| SMDNTC2522N33001** | 33 | 1 | 0.734 | 3000 | <30 | >11 | -40175 |
| SMDNTC2522N47001** | 47 | 1 | 1.002 | 3000 | <30 | >11 | -40175 |
| SMDNTC2522N50001** | 50 | 1 | 1.021 | 3000 | <30 | >11 | -40175 |
| SMDNTC2522N600X8** | 60 | 0.8 | 1.215 | 3000 | <30 | >11 | -40175 |
| SMDNTC2522N800X8** | 80 | 0.8 | 1.656 | 3200 | <30 | >11 | -40175 |
| SMDNTC2522N101X8** | 100 | 0.8 | 2.053 | 3200 | <30 | >11 | -40175 |
| SMDNTC2522N121X8** | 120 | 0.8 | 2.253 | 3200 | <30 | >11 | -40175 |
| SMDNTC2522N201X5** | 200 | 0.5 | 4.121 | 3200 | <32 | >11 | -40175 |
| Product Dimensions (for 2522) | Pad Dimensions | ||||
|---|---|---|---|---|---|
| L (mm) | W (mm) | H (mm) | a (mm) | b (mm) | c (mm) |
| 6.00.1 | 5.550.1 | 2.380.1 | 5.5 Min | 2.20.1 | 3.60.2 |
| Reliability Test Item | Test Method | Standard | Resistance Change Rate |
|---|---|---|---|
| Vibration | Frequency: 10~55Hz, Amplitude: 0.75mm, Axis: X, Y, Z for 2 hours each | No visible damage | 10% |
| Solderability | Temperature: 2455, Time: 30.5s | Uniform tinning, 95% coverage | - |
| Resistance to Soldering Heat | Immersion in 2605 solder for 101 sec | - | 10% |
| High Temperature Storage | 1252 for 1000+48 hours, static for 2 hours | - | 20% |
| Damp Heat Resistance | 1) 402, 90-95% RH for 1000 hours 2) 402, 90-95% RH with 1/20 max dissipation voltage (0.5V) for 500 hours | - | 20% |
| Thermal Shock | -4030min 255min 12530min 255min, 5 cycles | - | 20% |
| Endurance Test | 1) 255, Imax, 1000h; 2) 255, Imax, (1min ON /5min OFF)1000 times | No visible damage | 20% |
| Insulation Withstand Voltage | 750Vac applied for 1 minute between winding and pins | No external damage | - |
| Packaging Specification (Tape Reel) | Unit: mm | |||||||
|---|---|---|---|---|---|---|---|---|
| SPEC | A0 | B0 | K0 | P | P0 | P2 | T | N (Inner Fold) |
| Dimensions | 5.70.1 | 7.30.1 | 2.70.1 | 12.00.1 | 4.00.1 | 2.00.1 | 0.30.1 | - |
| SPEC | W | E | F | D0 | D1 | Parts/Reel (N Inner Fold) | - | - |
| Dimensions | 16.00.3 | 1.750.1 | 7.50.1 | 1.5+0.1/-0 | 1.50+0.1/-0 | 3000pcs | - | - |
| 13-inch Reel Dimensions | Unit: mm | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SPEC | 12 | E0.2 | 2.6 | F0.2 | 10.8 | W1.0 | 12.5 | T10.2 | 2.0 | T20.2 | 2.0 | A+0/-2 | 330 | N3.0 | 100 |
Soldering Instructions
Lead-Free Reflow Soldering Curve
- Soldering Temperature: 230260
- Soldering Time: 1030s
- Preheating Temperature: 170 max.
Wave Soldering Curve
Soldering Iron Rework Conditions
- Soldering Iron Tip Temperature: 400 (max.)
- Soldering Time: 3.5 sec (max.)
- Soldering Iron Power: 50W (max.)
Storage Environment
- Store under the following conditions and use within 6 months of delivery.
- Temperature: 10~30, Relative Humidity: 60% max.
- Solder NTC within 168 hours after opening the moisture-proof packaging. After opening, store NTC in the moisture-proof packaging with desiccant and HIC card, maintaining the above conditions.
- If the storage period exceeds 6 months, or if the indicator color on the attached HIC card changes after opening the packaging, baking (60 * 168hr) is required before soldering.
- Refer to baking data for products that exceed exposure time or environmental conditions before reflow soldering (exposure time starts from zero after baking).
- Do not store products in corrosive substances such as sulfur, chlorine gas, or acid, as this may cause pin oxidation and reduce solderability.
- To avoid the influence of moisture, dust, etc., products should be stored on shelves.
- Products stored in warehouses should avoid thermal shock, vibration, and direct sunlight.
Usage Precautions
- The operating ambient temperature should be within the specified technical range.
- Do not install near heat-generating or combustible components; maintain a minimum 3mm spacing to prevent damage.
- Wear gloves when handling the pins.
- This specification guarantees the quality of our product as an individual component. When our product is installed in your product, please ensure that your product has been effectively evaluated and confirmed according to your company's specifications.
- Songtian is not responsible for failures caused by the use of our products beyond the scope of this specification.
- In case of NTC damage, failure may result in a short circuit. To prevent hazards such as ignition, smoking, or fire during a short circuit, implement fail-safe functions using components like fuses in the circuit.
2508261540_STE-SMDNTC2522N06002MK0_C50751524.pdf
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