Ferrite Beads and Chips

Part Number	Description / PDF	Quantity
MMZ2012S181ATD25 TDK Corporation	FERRITE BEAD 180 OHM 0805 1LN	3384
MMZ0603S241CT000 TDK Corporation	FERRITE BEAD 240 OHM 0201 1LN	25875
MPZ2012S300AT000 TDK Corporation	FERRITE BEAD 30 OHM 0805 1LN	0
MMZ2012D800BT000 TDK Corporation	FERRITE BEAD 80 OHM 0805 1LN	28922
HF50ACC635050-T TDK Corporation	FERRITE BEAD 600 OHM 2520 1LN	1488
MMZ1608S471ATD25 TDK Corporation	FERRITE BEAD 470 OHM 0603 1LN	12000
MMZ1608S221ATA00 TDK Corporation	FERRITE BEAD 220 OHM 0603 1LN	570
MMZ1005S121HT000 TDK Corporation	FERRITE BEAD 120 OHM 0402 1LN	0
MMZ2012R102ATD25 TDK Corporation	FERRITE BEAD 1 KOHM 0805 1LN	3175
MMZ2012Y121BTD25 TDK Corporation	FERRITE BEAD 120 OHM 0805 1LN	1846
MPZ1005S100CT000 TDK Corporation	FERRITE BEAD 10 OHM 0402 1LN	0
MMZ1608Y600BTA00 TDK Corporation	FERRITE BEAD 60 OHM 0603 1LN	28217
MMZ1608S800ATD25 TDK Corporation	FERRITE BEAD 80 OHM 0603 1LN	1840
KMZ1608YHR601BTD25 TDK Corporation	FERRITE BEAD 600 OHM 0603 1LN	2135
MMZ1005Y400CTD25 TDK Corporation	FERRITE BEAD 40 OHM 0402 1LN	18035
MMZ2012Y152BT000 TDK Corporation	FERRITE BEAD 1.5 KOHM 0805 1LN	7260
MMZ1005S800HT000 TDK Corporation	FERRITE BEAD 80 OHM 0402 1LN	6665
HF70ACC321611-TD25 TDK Corporation	FERRITE BEAD 26 OHM 1206 1LN	25949
MPZ1005D750ETD25 TDK Corporation	CHIP BEADS FOR POWER LINE, FOR A	9260
MPZ1608S601ATD25 TDK Corporation	FERRITE BEAD 600 OHM 0603 1LN	25821

Ferrite Beads and Chips

1. Overview

Ferrite beads and chips are passive electronic components designed to suppress high-frequency noise in electrical circuits. Made from ferrite materials (iron oxide compounds), they act as low-pass filters by dissipating electromagnetic interference (EMI) as heat. Their importance in modern electronics lies in ensuring signal integrity, reducing radio-frequency interference (RFI), and complying with electromagnetic compatibility (EMC) standards. They are widely used in power supplies, communication systems, and high-speed digital circuits.

2. Main Types and Functional Classification

Type	Functional Features	Application Examples
High-Frequency Ferrite Beads	Optimized for GHz-range noise suppression, low core loss	5G transceivers, RF modules
Low-Frequency Ferrite Beads	Effective at MHz-range filtering, high impedance stability	Power supplies, motor drives
High-Current Chips	Designed for >1A applications, thermal stability	EV battery management systems
Multilayer Ferrite Chips	Stacked structure for broadband filtering	Smartphones, IoT devices

3. Structure and Composition

Typical construction includes:

Ferrite Core: Mn-Zn or Ni-Zn based ceramic material
Electrodes: Silver-palladium (AgPd) or copper-nickel (CuNi) terminations
Encapsulation: Epoxy or polymer coating for mechanical protection
Geometry: Available in cylindrical (beads) or rectangular (chips) formats

Advanced designs incorporate internal electrode layers to increase impedance density.

4. Key Technical Parameters

Parameter	Description	Importance
Impedance (Z)	100MHz @ 100 -10k	Determines noise suppression efficiency
Rated Current	100mA-10A	Affects circuit stability under load
Frequency Range	1MHz-10GHz	Defines operational bandwidth
DC Resistance (DCR)	0.1 -20	Impacts power loss and heating
Operating Temp.	-55 C to +150 C	Ensures reliability in extreme conditions

5. Application Areas

Consumer Electronics: Smartphones (camera module filtering), laptops (power line conditioning)
Automotive: EV charging systems (CAN bus noise suppression), ADAS sensors
Industrial: PLCs (programmable logic controllers), motor drives
Telecom: Base stations (RF front-end filtering), optical transceivers

6. Leading Manufacturers and Products

Manufacturer	Key Products	Specifications
Murata	BLSH series	0.7A, 600 @ 100MHz, EIA 0603
TDK	MMZ series	3.0A, 2200 @ 100MHz, EIA 1210
Coilcraft	0603LS series	1.5A, 500 @ 100MHz, 0.65mm height
W rth Elektronik	744300 series	2.0A, 1500 @ 100MHz, AEC-Q200 qualified

7. Selection Guidelines

Define frequency range: Choose Ni-Zn for >100MHz applications, Mn-Zn for low frequencies
Calculate current requirements: Select rated current 20% higher than maximum operating current
Impedance matching: Ensure Z 10 source/load impedance at target frequency
Package constraints: Prioritize chip format for space-limited PCB designs
Environmental factors: Consider temperature rating for automotive/industrial applications
Cost optimization: Balance performance needs with standard vs. high-end part pricing

8. Industry Trends

Key development directions include:

Miniaturization: Development of 0201/01005 chip sizes for wearable devices
High-frequency performance: Materials enabling stable operation beyond 10GHz
Integrated solutions: Combining ferrite beads with capacitors in single packages
Material innovation: Lead-free and low-temperature co-fired ceramic (LTCC) technologies
Automotive focus: AEC-Q qualified parts for EV/HEV power systems