M39003/09-4047/HSD

Series:	Military, MIL-PRF-39003/9, CSR21
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Capacitance:	68µF
Tolerance:	±20%
Voltage - Rated:	20V
Type:	Hermetically Sealed
ESR (Equivalent Series Resistance):	95 mOhm
Operating Temperature:	-55°C ~ 125°C
Lifetime @ Temp.:	--
Mounting Type:	Through Hole
Package / Case:	Axial
Size / Dimension:	0.351" Dia x 0.786" L (8.92mm x 19.96mm)
Height - Seated (Max):	--
Lead Spacing:	--
Manufacturer Size Code:	D
Features:	Military
Failure Rate:	D (0.001%)

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Tantalum Capacitors

Tantalum capacitors are an essential part of many electronic devices, providing features of both capacitors and resistors to form a variety of capacitive filters and power supplies. The M39003/09-4047/HSD is a single-layer tantalum capacitor from the Vishay brand, which can in some cases offer more superior performance than other common capacitors such as aluminum electrolytic capacitors and surface-mount multilayer chips. In this article, we will explore the application field and working principle of the M39003/09-4047/HSD to better understand its differences and advantages.The M39003/09-4047/HSD is a general-purpose capacitor for use in a variety of electronic systems, including audio/video, military, medical and telecommunications. This component is specifically designed for applications with high ripple current requirements and high temperature operation. It is a low-voltage, non-polarized type that will not overheat during operation, and has a self-healing quality. The M39003/09-4047/HSD also provides extremely low ESR and ESL, making it suitable for any application requiring noise and signal frequency filtering.Unlike aluminum electrolytic capacitors, which are formed from metal plates placed in between two electrolytic baths, the M39003/09-4047/HSD is a single-layer ceramic-like tantalum oxidation film package that has an element composed of tantalum powder and anode- and cathode-side leads. This provides the capacitor with higher volumetric efficiency, meaning that less space is needed for a given capacitance compared to electrolytic capacitors. The operating principles of a tantalum capacitor are based on a single-layer dielectric layer in which a negative voltage is applied to the anode and positive voltage to the cathode. The dielectric layer is formed by a oxide layer produced by the electrolysis of the anode material. The voltage applied will charge the capacitor, creating a current and a drop in voltage across the element. The voltage applied to the anode of a M39003/09-4047/HSD is limited by the breakdown voltage of the dielectric layer. This can vary depending on the particular device, but typically is around 2.5 volts. In order to prevent failure of the capacitor due to excessive voltage, the M39003/09-4047/HSD uses a current limiting capacitor. This component is placed in parallel with the tantalum electrolytic capacitors and limits the current that is allowed to flow across the device.Semi-conductive oxide impurities are also present in a tantalum capacitor, which affects the leakage current across the device. This leakage current is important for device operation since it is responsible for discharging the capacitor and preventing it from over-charging. Modern M39003/09-4047/HSD designs use an oxide impurity level of around 1011 per cubic centimeter, which greatly reduces the device\'s leakage current. The M39003/09-4047/HSD is an excellent choice for applications requiring high-frequency filtering due to its low Equivalent Series Resistance (ESR) and low Equivalent Series Inductance (ESI). Low ESR and ESI characteristics maximize the capacitor\'s ability to filter high-frequency signals in power supplies and electronic circuits. The device also offers excellent temperature stability over wide temperature ranges, making it suitable for use in temperature-sensitive applications.Overall, the M39003/09-4047/HSD is an excellent choice for applications requiring low ESR and ESI characteristics and high-temperature stability. Its single-layer ceramic-like tantalum oxidation film package is also ideal for applications that require space-saving capacitors. Its self-healing qualities also reduce the risk of capacitor failure due to over-voltage or over-heating conditions.

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