TDK CGJ6M3X7S2A475K200AA 4.7uF 100V X7S 10% 1210 Ceramic Capacitor 45 PCS

TDK CGJ6M3X7S2A475K200AA multilayer ceramic chip capacitor rated 4.7 uF, 100 VDC, ±10% tolerance, X7S dielectric, in the 1210 / 3225 metric surface-mount package. This is a high-reliability AEC-Q200 qualified MLCC from TDK’s CGJ series, designed for demanding circuits requiring relatively high capacitance at elevated voltage in a compact SMD package.
The original Digi-Key/TDK packaging identifies the part as 4.7 uF, 100 V, X7S, 1210 and indicates TDK Corporation, Japan. TDK specifies an operating temperature range of -55°C to +125°C, reflow soldering, and a 5% maximum dissipation factor.
Lifecycle: OBSOLETE. TDK now lists this exact CGJ part number as obsolete. The manufacturer-recommended replacement is CGA6M3X7S2A475K200AB, which retains the key 4.7 uF, 100 V, ±10%, X7S, 1210 electrical characteristics. TDK Product Center
HISTORICAL BACKGROUND: TDK was founded in Japan in 1935 as Tokyo Denki Kagaku Kogyo and became one of the world’s major manufacturers of magnetic materials, passive components, capacitors, inductors, sensors, and electronic materials. The company played a major role in the development and mass production of ferrite materials and later expanded heavily into ceramic and multilayer passive-component technologies used throughout consumer, industrial, automotive, communications, and computing equipment.
The CGJ series was developed as a high-reliability multilayer ceramic capacitor family. This specific device carries AEC-Q200 qualification, a component-level reliability standard widely associated with automotive and other high-stress electronic environments. Its combination of 4.7 uF capacitance, 100 V rating, and 1210 package made it useful where designers needed considerably more energy storage or bypass capacitance than lower-voltage small-case MLCCs could provide.
X7S is a Class II ceramic dielectric specified to operate from -55°C to +125°C with capacitance variation controlled within ±22% across that temperature range. It offers a useful compromise between capacitance density, voltage capability, package size, and temperature stability, making this style of capacitor useful in power-supply filtering, decoupling, DC rail stabilization, automotive electronics, industrial control equipment, and high-reliability electronic assemblies.
The 1210 package, also known as 3225 metric, measures approximately 3.2 mm × 2.5 mm and provides more physical volume than smaller 0603 or 0805 MLCCs, allowing higher capacitance and voltage ratings while remaining compatible with automated surface-mount assembly. TDK specifies the CGJ6 package at approximately 3.20 mm × 2.50 mm with 2.00 mm nominal thickness. TDK Product Center
As an obsolete high-reliability TDK CGJ-series capacitor, the exact CGJ6M3X7S2A475K200AA can be useful for maintenance and restoration of equipment originally engineered around this specific part number, especially where maintaining the original qualification, package, voltage, tolerance, and dielectric characteristics is desirable.