TMK021CG3R7BK-W vs TMK021CG3R4BK-W
| Part Number |
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| Category | Ceramic Capacitors | Ceramic Capacitors |
| Manufacturer | Taiyo Yuden | Taiyo Yuden |
| Description | CAP CER 3.7PF 25V NP0 008004 | CAP CER 3.4PF 25V NP0 008004 |
| Package | -Reel® | -Reel® |
| Series | M | M |
| Features | - | - |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C |
| Mounting Type | Surface Mount, MLCC | Surface Mount, MLCC |
| Package / Case | 008004 (0201 Metric) | 008004 (0201 Metric) |
| Applications | General Purpose | General Purpose |
| Tolerance | ±0.1pF | ±0.1pF |
| Temperature Coefficient | C0G, NP0 | C0G, NP0 |
| Size / Dimension | 0.010" L x 0.005" W (0.25mm x 0.13mm) | 0.010" L x 0.005" W (0.25mm x 0.13mm) |
| Voltage - Rated | 25V | 25V |
| Lead Spacing | - | - |
| Thickness (Max) | 0.006\" (0.14mm) | 0.006\" (0.14mm) |
| Ratings | - | - |
| Height - Seated (Max) | - | - |
| Capacitance | 3.7 pF | 3.4 pF |
| Lead Style | - | - |
| Failure Rate | - | - |
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1. What are ceramic capacitors used for?
Ceramic capacitors are widely used in various electronic devices, mainly for:
Coupling and decoupling: used in circuits to isolate DC signals while transmitting AC signals.
Filtering: remove noise from the power supply or smooth the output voltage.
Resonant circuit: such as oscillators in radio frequency (RF) circuits.
Temperature compensation: some types of ceramic capacitors have temperature coefficients that can be used to stabilize circuit performance.
Bypass: provide a low impedance path for high-frequency signals, thereby reducing the impact on other parts. -
2. Does the orientation of ceramic capacitors matter?
Ceramic capacitors are non-polar, so the mounting orientation does not affect their function.
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3. Why do ceramic capacitors make noise?
Some types of ceramic capacitors (particularly Class 2 ceramic capacitors) produce micro-vibrations when the voltage changes due to their material properties, which in turn cause faint mechanical noise.
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4. Which side of a ceramic capacitor is the positive side?
Ceramic capacitors are non-polarized, so there is no positive or negative side.
