 of components. The number of components can be reduced by using low ESL capacitors, while maintaining functions equivalent to general purpose capacitors (GRM Series).
A maximum operating temperature up to 125ºC We also offer an abundant lineup of X7* characteristics that can be used in high temperature locations, such as IC packages.
Murata proposes the use of the LLL series to reduce the number of components and high costs. Simulation is also possible.
1.25×2.0mm T max.
Since the current is the reverse direction, the ESL becomes lower with mutual inductance. The current flows into the adjacent electrode, which reduces the current loop and lowers the ESL.
The anti-resonance can be reduced by using a controlled ESR capacitor!!
Lineup of capacitors with ESR values from 100-1,000mΩ. According to the conditions of the anti-resonance, the most suitable ESR value can be selected from 4 types.
Reduces stress by the elastic action of the metal terminals!
No damage, even with 6 mm board deflection!!
Compared with chips only, this product is excellent in solder cracking resistance.
2 chips can be stacked.
Realize large capacity by stacking 2 capacitors.
Reduced about 30dB!
This is the most suitable Low ESL capacitors for noise measurement and power decoupling of highspeed electrical devices.
Ideal for use in implanted medical devices (non-critical circuits*) These capacitors are suitable for use in non-critical circuits of implanted medical devices such as cardiac pacemakers, implanted diagnostic devices, implanted rehabilitation devices and implanted nerve stimulation devices. They were developed based on high-reliability capacitor design technology, quality control, and process management know-how amassed by Murata in the development of markets requiring high reliability, such as the automotive market. As verified by reliability testing including heat cycle and humidity-resistance load tests, they are guaranteed to withstand more severe conditions than our general-purpose (GRM series) capacitors.
* Non-critical circuits This term refers to circuits in implanted medical devices that are not directly linked to life support, i.e., circuits that will not directly endanger the life of the patient should the functionality of the device be reduced or halted by failure of the circuit. In the case of cardiac pacemakers, circuits that are not directly linked to life support would be considered non-critical circuits. Murata also produces a series of capacitors (the GCR series) suitable for critical circuits linked to life support. Please contact your Murata sales representative for details. You can also contact us via our website.
Individual management and inspection available upon request. Individual management, such as appearance inspections or verification of various characteristics, can be performed upon request.
2. Measurement of Capacitance 1. Measure capacitance with the voltage and frequency speciﬁed in the product speciﬁcations. 1-1. The output voltage of the measuring equipment may decrease occasionally when capacitance is high. Please conﬁrm whether a prescribed measured voltage is impressed to the capacitor.
(2) The capacitance may change within the rated temperature. When you use a high dielectric constant type capacitor in a circuit that needs a tight (narrow) capacitance tolerance (e.g., a time-constant circuit), please carefully consider the temperature characteristics, and carefully conﬁrm the various characteristics in actual use conditions and the actual system.
1. The electrical characteristics of a capacitor can change with temperature. 1-1. For capacitors having larger temperature dependency, the capacitance may change with temperature changes. The following actions are recommended in order to ensure suitable capacitance values. (1) Select a suitable capacitance for the operating temperature range.
1-2. Corrosive gas can react with the termination (external) electrodes or lead wires of capacitors, and result in poor solderability. Do not store the capacitors in an atmosphere consisting of corrosive gas (e.g., hydrogen sulﬁde, sulfur dioxide, chlorine, ammonia gas, etc.). 1-3. Due to moisture condensation caused by rapid humidity changes, or the photochemical change caused by direct sunlight on the terminal electrodes and/or the resin/epoxy coatings, the solderability and electrical performance may deteriorate. Do not store capacitors under direct sunlight or in high humidity conditions.
1-2. The capacitance values of high dielectric constant type capacitors change depending on the AC voltage applied. Please consider the AC voltage characteristics when selecting a capacitor to be used in an AC circuit. Continued on the following page.
1. The performance of chip monolithic ceramic capacitors may be affected by the storage conditions. 1-1. Store the capacitors in the following conditions: Room Temperature of +5°C to +40°C and a Relative Humidity of 20% to 70%. (1) Sunlight, dust, rapid temperature changes, corrosive gas atmosphere, or high temperature and humidity conditions during storage may affect solderability and packaging performance. Therefore, please maintain the storage temperature and humidity. Use the product within six months, as prolonged storage may cause oxidation of the terminations (outer electrodes). (2) Please conﬁrm solderability before using after six months. Store the capacitors without opening the original bag. Even if the storage period is short, do not exceed the speciﬁed atmospheric conditions.
(E: Maximum possible applied voltage.) 1-2. Inﬂuence of over voltage Over voltage that is applied to the capacitor may result in an electrical short circuit caused by the breakdown of the internal dielectric layers. The time duration until breakdown depends on the applied voltage and the ambient temperature. 2. Use a safety standard certiﬁed capacitor in a power supply input circuit (AC ﬁlter), as it is also necessary to consider the withstand voltage and impulse withstand voltage deﬁned for each device.
4. Type of Applied Voltage and Self-heating Temperature 1. Conﬁrm the operating conditions to make sure that no large current is ﬂowing into the capacitor due to the continuous application of an AC voltage or pulse voltage. When a DC rated voltage product is used in an AC voltage circuit or a pulse voltage circuit, the AC current or pulse current will ﬂow into the capacitor; therefore check the self-heating condition. Please conﬁrm the surface temperature of the capacitor so that the temperature remains within the upper limits of the operating temperature, including the rise in temperature due to self-heating. When the capacitor is used with a high-frequency voltage or pulse voltage, heat may be generated by dielectric loss. 1-1. The load should be contained to the level such that when measuring at atmospheric temperature of 25°C, the product's self-heating remains below 20°C and the surface temperature of the capacitor in the actual circuit remains within the maximum operating temperature.
1. The high dielectric constant type capacitors have an Aging characteristic in which the capacitance value decreases with the passage of time. When you use high dielectric constant type capacitors in a circuit that needs a tight (narrow) capacitance tolerance (e.g., a time-constant circuit), please carefully consider the characteristics of these capacitors, such as their aging, voltage, and temperature characteristics. In addition, check capacitors using your actual appliances at the intended environment and operating conditions.
2. The capacitance values of high dielectric constant type capacitors changes depending on the AC voltage applied. Please consider the AC voltage characteristics when selecting a capacitor to be used in an AC circuit.
1. The capacitance value of a high dielectric constant type capacitor changes depending on the DC voltage applied. Please consider the DC voltage characteristics when a capacitor is selected for use in a DC circuit. 1-1. The capacitance of ceramic capacitors may change sharply depending on the applied voltage (see ﬁgure). Please conﬁrm the following in order to secure the capacitance. (1) Determine whether the capacitance change caused by the applied voltage is within the allowed range. (2) In the DC voltage characteristics, the rate of capacitance change becomes larger as voltage increases, even if the applied voltage is below the rated voltage. When a high dielectric constant type capacitor is used in a circuit that requires a tight (narrow) capacitance tolerance (e.g., a time constant circuit), please carefully consider the voltage characteristics, and conﬁrm the various characteristics in the actual operating conditions of the system.
!Caution Continued from the preceding page.
3. When printed circuit boards are piled up or handled, the corner of another printed circuit board should not be allowed to hit the capacitor, in order to avoid a crack or other damage to the capacitor.
Soldering and Mounting 1. Mounting Position 1. Conﬁrm the best mounting position and direction that minimizes the stress imposed on the capacitor during ﬂexing or bending the printed circuit board. 1-1. Choose a mounting position that minimizes the stress imposed on the chip during ﬂexing or bending of the board.
[Chip Mounting Close to Board Separation Point] It is effective to implement the following measures, to reduce stress in separating the board. It is best to implement all of the following three measures; however, implement as many measures as possible to reduce stress.
(1) Turn the mounting direction of the component parallel to the board separation surface.
(2) Add slits in the board separation part.
(3) Keep the mounting position of the component away from the board separation surface.
*1 A > D is valid when stress is added vertically to the perforation as with Hand Separation. If a Cutting Disc is used, stress will be diagonal to the PCB, therefore A > D is invalid.
[Mounting Capacitors Near Screw Holes] When a capacitor is mounted near a screw hole, it may be affected by the board deﬂection that occurs during the tightening of the screw. Mount the capacitor