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302S43W472KV4E

4700pF 3000V X7R MLCC, 10%, 1812, high-voltage TANCERAM, -55 to 125C, tape and reel

4146

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جزء الشركة المصنعة ： جزء الشركة المصنعة

302S43W472KV4E

الحزمة ： الحزمة

1812 (4.50 x 3.18 x 2.80 mm)

الوصف

نظرة عامة على المنتج

The 302S43W472KV4E is a Johanson product designed for electronic applications. It features compact design with reliable performance characteristics suitable for various industrial and consumer applications.

المواصفات الرئيسية

النوع	High-Voltage Multilayer Ceramic Capacitor (MLCC)
Series	S43 TANCERAM
Capacitance	4700 pF (0.0047 uF)
Tolerance	+/- 10% (K)
Rated Voltage	3000 VDC
Dielectric	X7R
Temperature Range	-55 C to +125 C
Capacitance Change (X7R)	+/-15% over -55C to +125C
Construction	Flat chip, surface mount
Termination	100% Tin-plated (matte) with nickel barrier
الحزمة	1812 [4532 Metric]
Dimensions	4.50 x 3.18 x 2.80 mm (max)
Packaging	Tape and Reel (1000 units)
الشركة المصنعة	Johanson Dielectrics
RoHS	متوافق

الميزات

4700pF high-voltage MLCC rated at 3000VDC; X7R dielectric with +/-15% capacitance change over temperature; TANCERAM S43 series with special internal electrode design; Voltage gradient distribution reduces field concentration; Higher capacitance per case size than conventional HV MLCCs; 100% tin-plated (matte) nickel barrier termination; -55C to +125C operating temperature; 10% tolerance; 1812 surface-mount package; Tape and reel packaging; RoHS compliant; Designed to EIA198 general requirements; 100% electrical tested

التطبيقات

High-voltage DC-DC converters; Lighting ballast circuits; Voltage multipliers; Back-lighting inverters; LAN/WAN interface protection; Analog and digital modems; Telecom coupling and decoupling; Snubber networks in power electronics; EMI suppression in high-voltage circuits; Automotive ignition systems

مقدمة المنتج:302S43W472KV4E مقدمة المنتج

The 302S43W472KV4E from Johanson Dielectrics is a 4700pF (0.0047uF) high-voltage multilayer ceramic capacitor (MLCC) rated at 3000VDC with X7R dielectric, housed in a compact 1812 (4.50 x 3.18mm) surface-mount package. Part of the TANCERAM S43 series, this device features a special internal electrode design that distributes voltage gradients throughout the entire capacitor body rather than concentrating them at the electrode edges, which is the primary failure mode in conventional high-voltage MLCCs. This distributed field design also enables higher capacitance values in a given case size and voltage rating compared to traditional constructions. The X7R dielectric provides a stable capacitance characteristic with a maximum change of +/-15% over the full -55C to +125C operating temperature range. The 100% matte tin-plated termination with nickel barrier provides excellent solderability and is compatible with both lead-free and tin-lead soldering processes. Each device is 100% electrically tested to ensure reliability in high-voltage applications. The 302 prefix in the part number indicates the 3000V voltage rating, distinguishing it from the 202 series (2000V) in the same form factor.

مبدأ العمل:302S43W472KV4E مبدأ العمل

The 302S43W472KV4E operates as a multilayer ceramic capacitor where multiple thin dielectric layers with interleaving electrodes are stacked to achieve the desired capacitance and voltage rating. The capacitance is determined by the formula C = (N x e0 x eR x A) / d, where N is the number of active layers, eR is the dielectric constant of the X7R ceramic (~3000), A is the overlap area of opposing electrodes, and d is the dielectric thickness. The TANCERAM design optimizes the internal electrode geometry to distribute the electric field evenly across the dielectric layers, preventing localized field concentrations that could cause dielectric breakdown at high voltages. The X7R dielectric is a Class II barium titanate-based ceramic that provides high volumetric efficiency (high capacitance in small size) with moderate temperature stability (+/-15% over -55C to +125C). The nickel barrier termination prevents tin whisker growth and leaching of the electrode materials during soldering, ensuring long-term reliability. At 3000VDC across the 4700pF capacitance, the stored energy is E = 0.5 x C x V^2 = 21.2 mJ, which is safely dissipated during normal charge and discharge cycles.

وصف الدبوس:302S43W472KV4E تعريف الدبوس ووظائفه

Terminal	الاسم	النوع	الوظيفة
1	Electrode A	Capacitor	First electrode terminal; 100% tin-plated with nickel barrier for solder attachment
2	Electrode B	Capacitor	Second electrode terminal; 100% tin-plated with nickel barrier for solder attachment

Application Scenarios:In which products and applications is302S43W472KV4E مستعمل

High-Voltage DC-DC Converters: Provides input/output filtering and voltage blocking in 1000V+ DC-DC converter stages with 3000V rating providing margin for transients.
Lighting Ballast Circuits: Snubber and resonant capacitor in HID and fluorescent lamp ballasts where high voltage and reliable X7R temperature stability are required.
EMI Suppression: High-voltage coupling capacitor for EMI filtering across isolation barriers in telecom and industrial equipment with 3000V isolation rating.
Voltage Multipliers: Stages in Cockcroft-Walton and Villard voltage multiplier circuits for high-voltage DC generation in scientific and medical equipment.

Alternative Models:What chips are recommended as replacements for 302S43W472KV4E

الشركة المصنعة	رقم الجزء	الحزمة	Voltage	الملاحظات
Johanson	202S43W472KV4E	1812	2000VDC	Same size, lower voltage rating
Johanson	302S43W102KV4E	1812	3000VDC	1000pF, same series/voltage
TDK	C4532X7R3A472K	1812	1000VDC	Lower voltage alternative
Yageo	CC4532KRX7R3A472	1812	1000VDC	Lower voltage alternative