ZXYAUDIO T1 Series High-Frequency Power Transformer - Ferrite Core, 100 kHz to 500 kHz, 4-Pin PCB Mount, Efficiency up to 95%, Power Density up to 5.0 W/cm³, UL94V-0 Bobbin

1. Product Overview

The T1 Series is a compact high-frequency power transformer built for PCB-mounted power conversion. A high-permeability ferrite core keeps core loss low, triple-layer yellow Mylar tape provides high dielectric strength between the windings, and the molded bobbin is rated UL94V-0. The standard 20 × 17.5 × 17.5 mm footprint and 4-pin DIP layout let the part drop into existing wave-soldered boards without a redesign.

T1 Series high-frequency power transformer with compact PCB-mount design

Close-up of the ferrite core, Mylar insulation and molded bobbin assembly

2. Key Features

• High-frequency operation from 100 kHz to 500 kHz
• Magnetic leakage below 10 µH for low loss
• Inductance tolerance ±10% for stable inductance
• Power density up to 5.0 W/cm³
• Conversion efficiency up to 95%
• Operating temperature rise below 40 °C
• High-permeability ferrite core with low core loss
• Triple-layer yellow Mylar insulating tape with high dielectric strength
• UL94V-0 flame-retardant molded bobbin
• Compact 20 × 17.5 × 17.5 mm footprint, 4-pin through-hole (DIP) mount

Core material and insulation construction: ferrite core, triple-layer Mylar tape, UL94V-0 bobbin

3. Advantages

The high-permeability ferrite core is what makes the T1 Series work at switching frequencies. Across the 100 kHz to 500 kHz range it keeps core loss low and magnetic leakage below 10 µH, so energy transfers from primary to secondary efficiently and little stray field escapes towards neighbouring components on the board.

That efficiency shows up as power density: up to 5.0 W/cm³ in a 20 × 17.5 × 17.5 mm body, with conversion efficiency up to 95% and a temperature rise below 40 °C. A transformer that runs cooler and takes less board area leaves room for the rest of the circuit and helps the finished product meet its thermal budget.

The insulation system is built for safety and durability. Triple-layer yellow Mylar tape gives high dielectric strength between the windings, the molded bobbin is UL94V-0 flame retardant, and the DIP pins suit reliable wave soldering. Inductance, turns ratio and power ratings can be customized, and OEM / ODM manufacturing is supported.

High-frequency electrical performance: 100 kHz – 500 kHz, leakage < 10 µH, efficiency up to 95%

4. Applications

The transformer is intended for high-frequency power conversion on a PCB, and should be applied within its rated 100 kHz to 500 kHz operating range.

• AC-DC and DC-DC switching power supplies
• Power adapters and chargers
• LED drivers
• Industrial and consumer power supply boards
• Other PCB-mounted power conversion circuits

T1 Series transformers mounted on a switched-mode power supply board

Key highlights and customization: standard footprint, custom inductance and turns ratio, OEM / ODM

5. Specifications

5.1 Electrical Performance

5.2 Construction and Materials

5.3 Mechanical Dimensions and Pinout

Note: all mechanical dimensions are in millimetres (mm), tolerance ±0.5 mm as shown in the mechanical drawing. Top marking: T1.

4-pin PCB footprint and terminal pitch: 10 ± 0.5 mm × 10 ± 0.5 mm

Top, bottom, front / side and isometric views with pin numbering

6. Quality &amp; Testing Assurance

• 100% Hi-Pot and inductance / turns ratio tested on every unit.
• RoHS compliant, CE marked, manufactured under an ISO 9001 certified quality system.
• UL94V-0 flame-retardant bobbin material.
• High electrical safety, high temperature resistance and long-term durability.
• OEM / ODM manufacturing with custom inductance, turns ratio and power ratings.

Quality assurance and testing standards: 100% Hi-Pot and inductance / turns ratio testing

Production units prepared for electrical testing on the bench

Product: T1 Series High-Frequency Power Transformer  |  Marking: T1  |  4-Pin PCB Mount. For datasheets, samples or OEM / ODM enquiries, please contact our sales team with your required inductance, turns ratio, power rating, quantity and destination port.