LENGTH, WIDTH AND HEIGHT DIMENSION INCLUDES TERMINAL ALSO
Approvals:
AEC-Q200
ET Product-Min:
15 V-us
Height:
3.5 mm
Length:
4.8 mm
Load Resistance:
7.1 Ω
Mounting Feature:
SURFACE MOUNT
Operating Frequency-Max:
1000 kHz
Operating Frequency-Min:
33 kHz
Operating Temperature-Max:
125 °C
Operating Temperature-Min:
-40 °C
Packing Method:
TR, EMBOSSED PLASTIC, 7 INCH
Peak Primary Current:
7 A
Primary Type:
WOUND PRIMARY
Secondary Inductance:
205 µH
Surface Mount:
YES
Transformer Type:
CURRENT SENSE TRANSFORMER
Turns Ratio (Np:Ns):
1:50
Width:
4.5 mm
CST4835-050EC Frequently Asked Questions (FAQs)
Coilcraft provides a recommended PCB land pattern in their application notes, which can be found on their website. The recommended land pattern is a rectangular pad with dimensions of 3.8 mm x 2.5 mm, with a 1.3 mm x 1.3 mm thermal pad in the center.
The CST4835-050EC has a maximum operating temperature of 125°C. To ensure reliable operation, it's essential to provide adequate thermal relief on the PCB, such as thermal vias and a sufficient copper area for heat dissipation. Additionally, consider using a thermal interface material (TIM) between the inductor and the PCB to improve heat transfer.
The self-resonant frequency (SRF) of the CST4835-050EC is not explicitly stated in the datasheet. However, according to Coilcraft's application notes, the SRF can be estimated using the following formula: SRF ≈ 1 / (2 * π * √(L * C)), where L is the inductance and C is the parasitic capacitance. For the CST4835-050EC, the estimated SRF is around 250-300 MHz.
The CST4835-050EC is a surface-mount device and can be susceptible to vibration-induced failures. However, Coilcraft's testing and qualification processes ensure that their inductors meet the requirements for vibration and shock per IEC 60068-2-6 and IEC 60068-2-27. If your application requires extreme vibration resistance, consider using a more ruggedized inductor or additional mechanical support.
To minimize EMI, ensure that the CST4835-050EC is properly shielded and decoupled from other components on the PCB. Use a shielded enclosure, and consider adding EMI filters or common-mode chokes to reduce radiation. Additionally, follow good PCB layout practices, such as keeping high-frequency traces short and away from sensitive components.
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CST4835-050EC Overview
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About COILCRAFT
Colicraft designs and manufactures high performing magnectic components, RF chip inductors, power magnectics, and filters. Coilcraft has engineering, manufacturing, and distribution facilities in North America, Asia, and Europe.
