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Specifications
Voltage Rating:
500V
Capacitance:
1.8uF
Temperature Coefficient:
X7R
Tolerance:
±20%
Mfr. Part #:
4540X7R185M501NT
Model Number:
4540X7R185M501NT
Package:
4540
Key Attributes
Product Description
Product Overview
The 4540(X7R) Surface Mount Ceramic Capacitor (MLCC) is designed for high-voltage electronic circuits, serving critical functions such as coupling, filtering, and resonance. It is ideal for applications including switching power supplies, AC-DC and DC-DC power converters, network/communication interfaces, LCD module backlight power supplies, and energy-saving lamp ballasts. These capacitors offer reliable performance in demanding high-voltage environments.
Product Attributes
- Temperature Characteristic: X7R (15%)
- Termination Material: Copper/Silver-Nickel-Tin (from inside to outside)
- Environmental Compliance: RoHS Directive, REACH Regulation
Technical Specifications
| Item | Specification | Test Method |
|---|---|---|
| Operating Temperature Range | -55~+125 | - |
| Appearance & Dimensions | No visible damage; Dimensions meet specifications | Visual inspection; Vernier caliper measurement |
| Capacitance | Within specified tolerance (X7R Characteristic) | 10uF: 1KHz10%, 1.00.2Vrms 10uF: 120Hz24, 0.50.1Vrms |
| Dissipation Factor (DF Value) | DF2.5%, V50V; DF3.5%, 16VV25V, Cr<0.47uF; DF10%, 16VV25V, Cr0.47uF; DF3.5%, 6.3VV10V, Cr<0.15uF; DF10%, 6.3VV10V, Cr0.15uF | 10uF: 1KHz10%, 1V0.1rms 10uF: 120Hz24, 0.5V0.1rms |
| Insulation Resistance (IR) | IR4*109, C25nF IR*Cr100*1012, C25nF | Test Voltage: Rated Voltage; Test Time: 605 sec; Humidity: 75%; Temperature: 255; Charge/discharge current: 50mA |
| Withstand Voltage (DC) | No dielectric breakdown or damage | Ur=100V: 2.5 times rated voltage Ur=200V/250V: 2.0 times rated voltage Ur=450/500/630V: 1.5 times rated voltage 1KVUr2KV: 1.2 times rated voltage 2KVUr: 1.1 times rated voltage (Ramp time: 1-3S, Hold time: 5S) |
| Solderability | Tinning rate >95%; No visible damage | Preheat at 80-120 for 10-30 sec; Lead-free solder; Flux used; Soldering temperature: 2455 |
| Solder Heat Resistance | No visible damage, Tinning rate 95% | Preheat at 100-200 for 102 sec; Immersion temperature: 2655; Immersion time: 51 sec. Clean with solvent. Room temperature storage for 242 hours. Capacitance change rate: -5%C/C 10%; DF value: same as NO4; IR: same as NO5. |
| Bending Strength | No visible damage | Test substrate: Al2O3 or PCB (1.6mm thickness, 100mm length, 40mm width). Bending depth: 1mm. Pressing speed: 0.5mm/sec. Capacitance change rate: |C/C|10%. Measurement under bent state. |
| Terminal Pull Strength | No visible damage | - |
| Temperature Cycling | |C/C|10% | Pre-treatment (X7R Characteristic): Upper temp 1 hour, store 241 hours, initial measurement. 5 temperature cycles. Store at normal temp/humidity for 242 hours before testing. Steps: Lower temp (303 min), Normal temp/humidity (2-3 min), Upper temp (303 min), Normal temp/humidity (2-3 min). |
| Damp Heat Test | No visible damage | Temperature: 402; Humidity: 90-95%RH; Time: 50024 hours. Store at normal temp/humidity for 24 hours after test. Capacitance change rate: |C/C|10%; DF value: 2 times initial standard; IR: IR1000M or IR*Cr25S (take smaller value). |
| High Temperature Load Test | No visible damage | Charge/discharge current limited to below 50mA. Store at normal temp/humidity for 484 hours after test. Temperature: 1253; Time: 100048 hours. Voltage: 100VV250V (2 times rated voltage), 250VV1KV (1.5 times rated voltage), 1KVV (1.2 times rated voltage). Capacitance change rate: |C/C|20%; DF value: 2 times initial standard; IR: IR2000M or IR*Cr50S (take smaller value). |
| PCB Bending Performance | No cracks or other defects | Capacitor soldered onto fixture (glass epoxy) using hybrid solder. Apply force as shown in Figure 2. Soldering by reflow, avoiding uneven soldering and thermal shock. |
Product Dimensions (Model 4540)
| Model | Dimensions (mm) | Imperial Representation | Metric Representation | |||||
|---|---|---|---|---|---|---|---|---|
| L | W | T | WB | |||||
| 4540 | 11.701.00 | 10.101.00 | 3.020.30 | 1.000.40 | 0.45*0.40 inch | 11.7*10.1 mm |
Packaging Information
Tape & Reel Packaging:
| Model | Tape Width (mm) | Reel Diameter (mm) | Quantity per Reel (Pcs) |
|---|---|---|---|
| 2211 | 4.00 0.10 | 12.00 0.10 | 500 |
Bulk Packaging: PE Bag
2504251652_AIDE-CAPACITOR-4540X7R185M501NT_C48579742.pdf
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