Arrays, Signal Transformers

Image Part Number Description / PDF Quantity Rfq
DRQ125-2R2-R

DRQ125-2R2-R

PowerStor (Eaton)

INDUCT ARRAY 2 COIL 2.208UH SMD

0

CTX68-2P-R

CTX68-2P-R

PowerStor (Eaton)

INDUCT ARRAY 2 COIL 68.85UH SMD

0

CTX5-1P-R

CTX5-1P-R

PowerStor (Eaton)

INDUCT ARRAY 2 COIL 4.83UH SMD

0

PM600-10-RC

PM600-10-RC

J.W. Miller / Bourns

INDUCT ARRAY 6 COIL 3.8UH SMD

0

CTX1-4P-R

CTX1-4P-R

PowerStor (Eaton)

INDUCT ARRAY 2 COIL 1.1UH SMD

0

PA0135.681NLT

PA0135.681NLT

PulseLarsen Antenna

INDUCT ARRAY 2 COIL 170NH SMD

0

DRQ73-681-R

DRQ73-681-R

PowerStor (Eaton)

INDUCT ARRAY 2 COIL 676.5UH SMD

0

CTX1-4A-R

CTX1-4A-R

PowerStor (Eaton)

INDUCT ARRAY 2 COIL 1.39UH SMD

0

PM610-05-RC

PM610-05-RC

J.W. Miller / Bourns

INDUCT ARRAY 6 COIL 11.6UH SMD

0

4448-22L

4448-22L

API Delevan

INDUCT ARRAY 2 COIL 33UH SMD

0

4448-08M

4448-08M

API Delevan

INDUCT ARRAY 2 COIL 2UH SMD

0

P0596NL

P0596NL

PulseLarsen Antenna

INDUCT ARRAY 2 COIL 8UH SMD

613

PA3143AHL

PA3143AHL

PulseLarsen Antenna

INDUCT ARRAY 3 COIL SMD

0

SRF1280A-652Y

SRF1280A-652Y

J.W. Miller / Bourns

INDUCT ARRAY 2 COIL SMD

0

CDRCH12D78BNP-101MC

CDRCH12D78BNP-101MC

Sumida Corporation

INDUCT ARRAY 2 COIL 100UH SMD

0

4448-26L

4448-26L

API Delevan

INDUCT ARRAY 2 COIL 68UH SMD

0

PA3144AHL

PA3144AHL

PulseLarsen Antenna

INDUCT ARRAY 4 COIL SMD

1187

CTX68-3-R

CTX68-3-R

PowerStor (Eaton)

INDUCT ARRAY 2 COIL 67.42UH SMD

0

CTX1-1-R

CTX1-1-R

PowerStor (Eaton)

INDUCT ARRAY 2 COIL 900NH SMD

0

PA3142AHL

PA3142AHL

PulseLarsen Antenna

INDUCT ARRAY 2 COIL SMD

0

Arrays, Signal Transformers

1. Overview

Inductors, coils, chokes, arrays, and signal transformers are fundamental passive components in electronic systems. Inductors store energy in magnetic fields, chokes suppress high-frequency noise, arrays integrate multiple magnetic elements, and signal transformers enable voltage conversion and galvanic isolation. These components are critical in power management, signal processing, electromagnetic interference (EMI) mitigation, and communication systems. Their advancements drive miniaturization, efficiency, and performance in modern electronics.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Wire-wound InductorsHigh inductance values, low DC resistanceSwitching power supplies
Ferrite Bead ChokesHigh impedance at high frequenciesEMI filtering in USB interfaces
Common-mode Choke ArraysSuppress differential and common-mode noiseIndustrial motor drives
Signal TransformersGalvanic isolation, voltage scalingTelecom network interfaces
Thin-film Inductor ArraysUltra-low profile, tight couplingRF front-end modules

3. Structure and Composition

Typical structures include:

  • Inductors: Wound conductive wire (copper/enamelled aluminum) on magnetic cores (ferrite, powdered iron)
  • Chokes: Toroidal or drum cores with single/dual windings
  • Arrays: Monolithic integration of multiple chokes/inductors in single package
  • Signal Transformers: Primary/secondary coils with electrostatic shielding, E-I or toroidal cores

4. Key Technical Specifications

ParameterDescriptionImportance
Inductance (L)Defines energy storage capacity ( H-mH range)Determines filtering performance
Rated CurrentMax DC/AC current before saturationPrevents core saturation in power circuits
DCRDC resistance of windingsAffects power efficiency
Self-resonant FrequencyFrequency where parasitic capacitance dominatesLimits usable frequency range
Turns RatioPrimary/secondary winding ratioDefines voltage transformation ratio

5. Application Fields

Key industries:

  • Telecommunications: Base station power systems, optical transceivers
  • Consumer Electronics: Mobile chargers, LED drivers
  • Automotive: EV battery management systems, ADAS sensors
  • Industrial: Programmable logic controllers (PLCs), inverters

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductsKey Features
TDKINDUCTOR,Wire-wound: VLS6045EX6.0 4.5 4.5mm, 120A rated current
CoilcraftCommon-mode Choke: 1140081.8kV isolation, 100MHz bandwidth
BournsSignal Transformer: SM41121:1:1:1 ratio, 1500V isolation
Pulse ElectronicsLAN Transformer: HX4008NLIntegrated magnetics for Gigabit Ethernet
SumidaPower Choke: CDRH3D283.3 H-100 H, 125A peak current

7. Selection Guidelines

Consider:

  • Inductance value and tolerance ( 20% typical for power chokes)
  • Operating frequency vs. self-resonant frequency
  • Thermal management (temperature rise 40 C)
  • Package size (0402-2200 for surface-mount devices)
  • Isolation voltage ( 1.5kV for industrial applications)

8. Industry Trends

Emerging trends:

  • Miniaturization: 01005-sized inductors for wearable devices
  • High-frequency operation: Multi-GHz transformers for 5G infrastructure
  • Integrated magnetics: Combined inductors/transformers in SiP solutions
  • Advanced materials: Amorphous/nanocrystalline cores for high-efficiency EV chargers
  • Automotive-grade reliability: AEC-Q200 qualified components for e-mobility

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