Engineered Custom Magnetics Solutions for Global OEMs
At Triad Magnetics, we specialize in complete custom magnetic design, prototyping, and high-volume manufacturing tailored to exact client specifications. Backed by over 75 years of electromagnetic engineering heritage, our California-based engineering center and ISO 9001:2015 certified global manufacturing facilities deliver custom magnetic components that consistently solve complex electrical, thermal, and mechanical challenges.
As a trusted engineering partner for international procurement teams and design engineers, we focus on balancing power efficiency, magnetic performance, thermal dissipation, footprint constraints, and unit cost. Whether developing a ground-up magnetic topology or optimizing an existing component for international agency approvals, our team provides complete electrical modeling, 3D mechanical CAD drafting, thermal validation, and prototype sample turnaround within two to three weeks.
ISO 9001:2015 Certified
Strict quality control protocols, full batch traceability, and failure analysis labs.
Rapid Prototyping
Functional proof-of-concept prototypes evaluated and delivered in 2 to 3 weeks.
75+ Years Heritage
Proven electromagnetic engineering expertise across industrial and medical sectors.
Global Compliance
Built to meet UL, CSA, TUV, CE, and IEC 60601-1 safety standards worldwide.
Custom Magnetic Product Capabilities
Our custom engineering solutions span six core magnetic product categories, allowing design engineers to obtain exact voltage transformation, isolation, current monitoring, and noise suppression for advanced OEM systems.
Custom Power Transformers
Engineered for linear and switch-mode power conversion, low signal distortion, and high isolation voltage across industrial and commercial environments.
- Power Ratings: 0.010 VA up to 30 kVA industrial systems
- Operating Frequency: 20 Hz low frequency to 1 MHz high frequency
- UL Insulation Ratings: Class B (130°C) through Class H (180°C) and Class N (200°C)
- Core Configurations: EE, EI, EP, ER, Pot Cores, Toroidal, and UI shapes
- Core Materials: Grain-oriented silicon steel, ferrites, iron oxide, powder cores, and nickel alloys
Custom Inductors & Chokes
Optimized for EMI filter suppression, harmonic mitigation, DC filtering, and high-current energy storage in modern power electronics.
- Topologies: Common mode, differential mode, DC swinging, AC line, and DC link inductors
- Conductor Materials: Magnet wire, high-frequency Litz wire, copper tape, and aluminum foil
- Core Materials: Amorphous alloys, sendust, ferrite cores, and iron powder compacts
- Current Capacity: Micro-amp current sensing up to heavy-duty high-ampere 3-phase industrial power chokes
Custom Wall Plug-In Power Supplies
Compact, regulated AC/DC power adapters designed to international energy efficiency and safety standards for medical, commercial, and consumer hardware.
- Universal AC Inputs: 100 to 240 VAC wide range, 50/60 Hz
- DC Output Range: 4.5 VDC to 24 VDC regulated outputs
- Efficiency Standards: Fully compliant with EISA 2007 and Level VI efficiency levels
- Custom Enclosures: Environmental IP sealing, custom brand color matching, and global plug blade kits
Custom Current Sense Transformers
High-precision measurement transformers engineered for energy monitoring, feedback loops, overload protection, and smart grid automation.
- Extreme Enclosures: Severe duty potting, open toroidal structures, and custom resin encapsulation
- Termination Options: PCB pin mounts, flying leads, custom wiring harnesses, and screw terminals
- Environmental Resistance: Resistant to high vibration, thermal shock, moisture, and radiation exposure
Custom Audio Transformers
Ultra-low distortion isolation and matching transformers designed for professional audio, broadcast mixing consoles, and high-fidelity signal equipment.
- Transformer Types: Impedance matching, microphone step-up, line isolation, tube plate & filament
- Configurations: Push-pull, single-ended output, and shielded low-noise audio chokes
- Performance: Flat frequency response, linear phase alignment, and minimal harmonic distortion (THD)
Custom High-Frequency & Planar Magnetics
Advanced high-frequency magnetics engineered for switch-mode power supplies (SMPS), resonant converters, and high-density power conversion.
- Topologies: Flyback continuous/discontinuous, push-pull buck, forward, and LLC resonant
- Gate Drivers: Gate drive and base drive isolation transformers for MOSFET/IGBT switching
- Benefits: Compact planar profiles, superior power density, low leakage inductance, and high thermal efficiency
Technical Capabilities & Design Options Matrix
The matrix below details the engineering design spectrum available for OEM clients specifying custom magnetic solutions:
| Parameter / Feature |
Standard Specification Range |
Custom OEM Capabilities |
| Power Rating Range |
0.5 VA to 5 kVA |
0.010 VA up to 30 kVA (Single & 3-Phase) |
| Operating Frequency |
50 Hz – 100 kHz |
20 Hz to 1.0 MHz (SMPS & RF Applications) |
| Insulation Thermal Class |
Class B (130°C), Class F (155°C) |
Class H (180°C), Class N (200°C), Custom Vacuum Impregnation |
| Safety Compliance |
UL 5085, UL 60950-1 |
IEC 60601-1 (Medical 2MOPP), UL 62368-1, CSA, CE, RoHS, REACH |
| Mounting Options |
Through-hole PCB, Chassis mount |
SMD tape-and-reel, Panel mount, Custom bracketry, Flying leads |
| Prototyping Lead Time |
Standard Catalog Stock |
2 to 3 Weeks for Validated Engineering Samples |
Field-Proven OEM Applications & Case Studies
Our custom transformers and magnetic components operate in critical systems across demanding international industries:
Renewable Energy
Solar Inverter Custom Inductor
Designed high-current, low-core-loss inductor coils tailored for solar power inverters operating under severe exterior ambient temperatures.
Industrial Automation
Smart Electric Meter Transformer
Engineered ultra-compact current measurement coils with high accuracy linear output for utility smart-metering hardware.
Test & Measurement
Toroidal Lab Power Supply Transformer
Custom precision toroidal power transformer providing silent operation, minimal stray magnetic fields, and dual primary winding inputs.
Medical Devices
Blood & Fluid Warmer Isolation Transformer
Built low-leakage isolation transformers compliant with strict IEC 60601-1 medical safety standards for patient-connected thermal therapy units.
Medical Optics
High-Voltage Surgical Laser Magnetics
Custom high-voltage power transformer engineered for medical optics laser drivers requiring elevated insulation breakdown margins.
Pro Audio & Sound
Shielded Audio Matching Transformer
High-mu mumetal shielded impedance matching transformer providing high common-mode rejection for professional broadcast mixing systems.
