Industrial Transformers: Reliable Solutions from alfatec
In modern electronics, precise and reliable passive components are essential - such as electromagnetic coils, chokes, and related inductors, which play a key role in countless applications, from power supply and signal filtering to high-frequency technology.
alfatec GmbH & Co. KG is your experienced partner and distributor for high-quality inductive components. In addition to a broad portfolio of leading manufacturers of transformers and coils such as Sunlord, we offer in-depth technical expertise and individual consultation to find the perfect solution for your specific requirements.
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Variety of Industrial Transformers: SMD, Planar & More
The world of industrial transformers is diverse. They differ in form factor and core technology, which determines their suitability for specific applications. Common types include:
- SMD (Surface Mount Device): Compact transformers for surface mounting—ideal for automated assembly and miniaturized designs. alfatec offers optimized high-density solutions from Sunlord.
- Radial Pin / Through-Hole: Classic leaded components for through-hole mounting, often more robust and suitable for higher power.
- Planar: Flat transformers with integrated windings (often as PCB traces), known for excellent thermal properties, high power density, and reproducibility—especially at high frequencies.
alfatec offers a wide range of industrial transformers, including:
- Power transformers: For efficient energy transfer, often used in SMPS and DC/DC converters.
- Control transformers: For supplying control circuits with adapted voltage—available as single-phase or three-phase.
- Isolation transformers: For safe galvanic isolation of circuits (protective separation).
- Safety transformers: Compliant with safety standards for SELV/PELV.
- Gate drive transformers: For driving power semiconductors like MOSFETs and IGBTs with precise pulses and required isolation.
- Current sense transformers: For accurate current measurement in power electronics.
- Line transformers: For adapting mains voltage to circuit requirements.
- Planar transformers: Ideal for high-frequency applications with strict height and efficiency requirements.
Types of inductors:
- Coils (inductors): General term for inductive components used for energy storage, filtering, or as part of oscillating circuits.
- Chokes: Used specifically to suppress or limit alternating currents or high-frequency interference. They “choke” unwanted frequency components.
- Transformers: Consist of at least two coils on a common core and are used for voltage conversion or galvanic isolation. Although related, our focus here is primarily on inductors and chokes.
We also offer custom solutions tailored to your specific needs in collaboration with our partners.
Technical Parameters: What Matters in Industrial Transformers
Choosing the right industrial transformer depends on several key technical parameters:
- Input voltage (primary voltage): Voltage applied to the primary winding.
- Output voltage (secondary voltage): Voltage available at the secondary winding. The ratio is determined by the turns ratio.
- Power: The apparent power (VA) or real power (W) the transformer can continuously deliver. alfatec transformers range from 1 W to 30 kW.
- Frequency range: Optimized for 50/60 Hz (line transformers) or kHz–MHz (SMPS, gate drive).
- Efficiency: Ratio of output to input power—critical for minimizing losses and heat.
- Isolation and safety: Dielectric strength between windings and core, compliance with standards like IEC/EN 61558.
- Form factor and dimensions: SMD, THT, planar—matched to your space and assembly process.
- Materials: Core materials (e.g., ferrite for high frequency, iron powder, amorphous metals, silicon steel for line frequency) and winding materials (typically enameled copper wire) affect performance, size, and cost.
Our experts at alfatec support you in selecting the optimal transformer based on your technical requirements.
alfatec portfolio: High-performance inductors from Sunlord
As your reliable distributor, we rely on strong partners. Sunlord is a leading global manufacturer of passive components, renowned for innovation, quality, and its extremely broad portfolio. alfatec offers you a wide range of Sunlord coils and chokes, including:
Power inductors:
- Function: Energy storage in DC/DC converters and switching power supplies (SMPS). Smoothing of output currents.
- Types available from Sunlord: Shielded/unshielded SMD power inductors, high-current inductors, molded chokes.
- Special features: High saturation currents, low direct current resistance (DCR), optimized for high efficiency.
Chip inductors:
- Function: Miniaturized inductors for filtering, impedance matching, and as part of oscillating circuits in space-critical applications (e.g., mobile devices, wearables).
- Types available from Sunlord: Multilayer chip inductors, wire-wound chip inductors.
- Special features: Very small designs (up to 01005), wide inductance range, high quality factors (Q) for RF applications.
RF inductors:
- Function: Used in high-frequency circuits (MHz to GHz) for filtering, matching, and in oscillators.
- Types available from Sunlord: Ceramic chip inductors, wire-wound RF inductors.
- Special features: High quality factors (Q), high self-resonant frequencies (SRF), precise tolerances.
Common mode chokes:
- Function: Suppression of common mode interference (EMI) on data and power lines without affecting the useful signal.
- Types available from Sunlord: SMD common mode chokes for various interfaces (USB, HDMI, CAN) and power supplies.
- Special features: High common mode impedance over a wide frequency range, low differential attenuation.
Transformers: Sunlord also offers specialized transformers, such as for LAN interfaces or Power over Ethernet (PoE).
Our partner in the field of transformers
Sunlord
Our partner Sunlord has been developing and producing chip-based electronic components such as EMC or RF components, coils, inductors and transformers since 2000. The company also offers development work for customised designs and has already received Tier 1 certifications for this.
Manufacturer-specific advantages:
Excellence in SMD inductors and transformers, high consistency in mass production, focus on high-frequency and miniaturized solutions—ideal for telecom, consumer electronics, and automotive applications.
Your Partner for Industrial Transformers: alfatec
At alfatec, we understand the needs of engineers, technicians, and buyers. We offer not just components, but complete solutions. With our deep technical expertise, broad portfolio of industrial transformers from top manufacturers like Sunlord, and the ability to deliver custom solutions, we are your ideal partner. Rely on proven quality, technical support, and dependable delivery for your next project.
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See the quality and performance of our transformers for yourself. Request a no-obligation quote today or download the data sheets.
alfatec – your partner for high-quality electronic components
As your expert partner for electronic components, alfatec supports you in selecting the right transformers for your applications. We offer comprehensive advice and are happy to answer any questions you may have about power modules.
Do you have questions about our transformers or would you like a personal consultation? Feel free to contact us.