Transformer/Inductor

Product Specifications

Technical details and manufacturing context for Transformer/Inductor

Definition

In driver and power supply systems, transformers and inductors serve distinct but complementary roles. Transformers step voltage up or down to match the requirements of the circuit, ensuring proper operation of loads such as LED drivers, switch-mode power supplies, and industrial controls. Inductors, on the other hand, filter current, reduce noise, and store energy in switching regulators, contributing to stable and efficient power conversion. Both components rely on magnetic principles: transformers use mutual induction between primary and secondary windings to transfer AC energy with voltage transformation, while inductors store energy in magnetic fields created by current flow through coiled conductors, resisting changes in current. The selection of a transformer or inductor depends on several parameters, including rated power (0.5–1000 VA), primary voltage (100–240 V AC), secondary voltage (5–48 V AC), operating frequency (50–60 Hz), efficiency (85–98%), inductance (1–1000 µH for inductors), tolerance (±5–±20%), operating temperature (-40 to 85 °C), insulation class (B–H), dielectric strength (1.5–5 kV), ingress protection (IP00–IP68), core material (ferrite to silicon steel), weight (0.01–50 kg), and dimensions (10×10×10 to 300×200×150 mm). These values are typical ranges for directory reference; actual specifications must be confirmed with the manufacturer for the specific model and application. Standards such as IEC 61558, IEC 60076, IEC 62024, IEC 60068, IEC 60085, and IEC 60529 are referenced for verification, but do not imply certification. When selecting, consider the load profile, ambient conditions, and required isolation. Verify model-specific values and standards with the legal manufacturer or supplier before procurement.

Working Principle

Transformers operate on the principle of mutual induction. An alternating current in the primary winding creates a varying magnetic flux in the core, which induces a voltage in the secondary winding. The voltage ratio is determined by the turns ratio. Inductors, conversely, store energy in a magnetic field when current flows through the coil. The magnetic field resists changes in current, providing filtering and energy storage. In switching regulators, inductors smooth current and store energy during the on-time, releasing it during the off-time. Both components use ferrite or silicon steel cores to concentrate magnetic flux, with copper wire windings and insulation materials to ensure electrical isolation.

Common Materials

Ferrite core, Copper wire, Insulation material

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Power	0.5–1000 VA	Continuous load capabilityIEC 61558
Primary Voltage	100–240 V AC	Input voltage rangeIEC 60076
Secondary Voltage	5–48 V AC	Output voltageIEC 60076
Frequency	50–60 Hz	Operating frequencyIEC 60076
Efficiency	85–98 %	At full loadIEC 60076
Inductance	1–1000 µH	For inductorsIEC 62024
Tolerance	±5–±20 %	Inductance toleranceIEC 60076
Operating Temperature	-40–85 °C	Ambient rangeIEC 60068
Insulation Class	B–H class	Thermal ratingIEC 60085
Dielectric Strength	1.5–5 kV	Test voltageIEC 60076
Ingress Protection	IP00–IP68 IP	Environmental sealingIEC 60529
Core Material	Ferrite–Silicon steel	Affects performance
Weight	0.01–50 kg	Depends on power
Dimensions (L×W×H)	10×10×10–300×200×150 mm	Envelope size

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Core Part
Provides magnetic path and concentrates magnetic flux

Material: Ferrite or laminated steel
Windings Part
Conduct current and create electromagnetic field

Material: Copper or aluminum wire
Bobbin Part
Supports and insulates windings from core

Material: Plastic or ceramic
Insulation Material
Separates winding from winding and winding from core; it is what makes the isolation rating.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Driver/power supply

View system integration details

Manufacturers of Transformer/Inductor

Manufacturer profiles associated with Transformer/Inductor.

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Frequently Asked Questions

What is the difference between a transformer and an inductor?

A transformer transfers energy between circuits via mutual induction, typically changing voltage levels. An inductor stores energy in a magnetic field and resists current changes, used for filtering and energy storage in switching regulators.

What parameters are important when selecting a transformer?

Key parameters include rated power (VA), primary and secondary voltages, frequency, efficiency, insulation class, dielectric strength, and operating temperature. These must match the application requirements and be verified with the manufacturer.

What standards apply to transformers and inductors?

Common standards include IEC 61558 for safety of transformers, IEC 60076 for power transformers, IEC 62024 for inductors, IEC 60068 for environmental testing, IEC 60085 for insulation, and IEC 60529 for ingress protection. Compliance should be confirmed with the supplier.

How do I determine the correct inductance value for an inductor?

Inductance is selected based on the switching frequency, current ripple, and load requirements. The directory lists a range of 1–1000 µH; the exact value must be calculated for the circuit and verified with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Atmospheric to 1.5 bar (typical enclosure rating)
other spec:	Frequency range: 50/60 Hz to 400 kHz (depending on core material and design)
temperature:	-40°C to +155°C (ambient, depending on insulation class)

Product Specifications

Applied To / Applications

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