BLM31KN102SH1K

Series:	BLM
Packaging:	Tape & Reel (TR)
Part Status:	Active
Filter Type:	Power Line
Impedance @ Frequency:	1 kOhms @ 100MHz
Current Rating (Max):	2A
DC Resistance (DCR) (Max):	75 mOhm
Ratings:	AEC-Q200
Operating Temperature:	-55°C ~ 125°C
Package / Case:	1206 (3216 Metric)
Mounting Type:	Surface Mount
Height (Max):	0.071" (1.80mm)
Size / Dimension:	0.126" L x 0.063" W (3.20mm x 1.60mm)

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Ferrite Beads and Chips

Ferrite beads and chips are a type of electronic components made from ceramics that can be used to reduce unwanted RF signals. They work by providing a low impedance escape path for unwanted high-frequency signals, effectively absorbing the signal. The most common use of ferrite beads and chips is in the protection of sensitive electronic equipment.The BLM31KN102SH1K is a ferrite bead chip from Murata that is designed for use in high-frequency switching power supplies. It has a maximum working current of 1.2A and an impedance of 2.71 ohms. It features an ultra-low DC resistance of 0.077 ohms and a very wide operating temperature range of -55 to +125°C. This makes it the perfect choice for applications where high frequency noise needs to be suppressed such as switching power supplies, battery charger and power line filters.The working principle of this ferrite bead chip is based on the law of conservation of energy – when the high frequency noise is coupled to the ferrite bead chip, the energy is transformed from electrical energy to low-grade heat by the internal impedance of the bead. As this happens, the high frequency noise is dissipated. The low impedance of the chip is key to its effectiveness as it prevents the noise from re-entering the circuit – essentially, the chip acts as a one-way valve allowing the noise to only escape.The application field of BLM31KN102SH1K is quite diverse and includes but is not limited to: switching power supplies, DC motor drives, battery chargers, power line filters, LED lighting, EMI/RFI Filters, and USB to audio converters.When selecting ferrite beads and chips, it is important to take into account the operating temperature range as well as the current rating or impedance of the device. This ensures that the device is able to handle the type of noise that needs to be suppressed. The BLM31KN102SH1K is a good choice for applications that require noise suppression over a wide range of temperatures, as it has an operating temperature range of -55 to +125°C and a maximum working current of 1.2A.Overall, the BLM31KN102SH1K is an ideal choice for many applications where high frequency noise suppression is required over a wide range of temperatures. Its low impedance and wide operating temperature range make it an effective and versatile solution for many types of noise suppression.

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