HVC2512H-330MK8 vs PHP02512E49R9BST5
| Part Number |
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| Category | Chip Resistor - Surface Mount | Chip Resistor - Surface Mount |
| Manufacturer | Riedon | Vishay Dale Thin Film |
| Description | RES SMD 330M OHM 10% 1W 2512 | RES SMD 49.9 OHM 0.1% 2.5W 2512 |
| Package | Tape & Reel (TR) | Tape & Reel (TR) |
| Series | HVC | PHP |
| Features | High Voltage, Non-Magnetic | Flame Proof, Moisture Resistant, Safety |
| Operating Temperature | -55°C ~ 300°C | -55°C ~ 155°C |
| Package / Case | 2512 (6432 Metric) | 2512 (6432 Metric) |
| Supplier Device Package | 2512 | 2512 |
| Tolerance | ±10% | ±0.1% |
| Temperature Coefficient | ±100ppm/°C | ±25ppm/°C |
| Size / Dimension | 0.248" L x 0.138" W (6.30mm x 3.50mm) | 0.259" L x 0.124" W (6.58mm x 3.15mm) |
| Power (Watts) | 1W | 2.5W |
| Ratings | - | - |
| Height - Seated (Max) | 0.030\" (0.75mm) | 0.033\" (0.84mm) |
| Failure Rate | - | - |
| Resistance | 330 MOhms | 49.9 Ohms |
| Composition | Thick Film | Thin Film |
| Number of Terminations | 2 | 2 |
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1. Chip fixed resistor classification?
1. Conventional series thick film chip resistors: including general-purpose resistors in sizes from 0201 to 0805, and resistors in sizes from 1206 to 2512.
2. High-precision and high-stability chip resistors: These resistors have high precision and high stability, with sizes ranging from 0201 to 0603, 0805 to 1210, and 2010 to 2512.
3. Conventional series thin film chip resistors: This refers to general-purpose thin film chip resistors with a wide range of sizes from 0201 to 2512.
4. Low resistance chip resistors: Suitable for circuit applications requiring low resistance values, with sizes ranging from 0402 to 1206, and 2010 to 2512.
5. Chip resistor arrays: Including raised and recessed chip resistor arrays, used in circuits that require multiple resistance values to work simultaneously.
6. Chip current sensor: used to detect the current in the circuit, with low temperature coefficient (TCR) characteristics. -
2. What are the functions of chip fixed resistors?
Chip fixed resistors (chip resistors) play a vital role in electronic devices and systems.
Chip fixed resistors, also known as Chip Resistor, are one of the passive electronic components widely used in the modern electronic manufacturing industry.
1. Voltage division and current shunting: When the chip resistor is in series or parallel with other components such as light bulbs in the circuit, it can play the role of voltage division and current shunting. In a series circuit, the chip resistor shares the voltage with another component; in a parallel circuit, the chip resistor shares the current with other components.
2. Impedance matching: During the signal transmission process, the chip resistor helps to achieve the matching of the load impedance and the internal impedance of the excitation source by adjusting the impedance, thereby optimizing the signal transmission efficiency.
3. Filtering: In the RC charging and discharging circuit composed of a resistor and a capacitor in series, the chip resistor plays a filtering role, helping to stabilize the voltage and current in the circuit and reduce fluctuations and interference.
4. Special resistor functions: Special types of chip resistors, such as resistors made of semiconductor materials, have variable resistance values and are used to achieve more complex circuit functions, such as impedance control.
5. Save space and improve reliability: Due to the small size and light weight of chip resistors, circuit space costs can be greatly saved, making the design more refined. At the same time, its ability to adapt to reflow soldering and wave soldering improves the reliability and efficiency of production. -
3. Resistance value representation method
In the digital identification of chip resistors, the first three digits are usually used to indicate the resistance value. These digits are interpreted in decimal, such as "100" means the resistance value is 100 ohms. In some cases, if the resistor value is large, "R" may be used to indicate the decimal point position, such as "1R0" for a resistor value of 1.0 ohm.
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4. Chip Resistor package power relationship
Formula
Current = (rated power / resistance) square root
Power P = U2 / R
Package Rated power 70°C Maximum operating voltage (V) Imperial (inch) Metric (mm)
0201 0603 1/20W / 25
0402 1005 1/16W / 50
0603 1608 1/16W 1/10W 50
0805 2012 1/10W 1/8W 150
1206 3216 1/8W 1/4W 200
1210 3225 1/4W 1/3W 200
1812 4832 1/2W / 200
2010 5025 1/2W 3/4W 200
2512 6432 1W / 200
