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

1. Product Overview

The T1 series is a compact high-frequency power transformer designed for PCB-mounted power conversion. The high-permeability ferrite core maintains low core loss, three layers of yellow polyester film tape provide high dielectric strength between windings, and the molded bobbin meets UL94V-0 flame retardant rating. The standard 20 × 17.5 × 17.5 mm form factor and 4-pin DIP layout allow this component to be used directly in existing wave-soldered circuit boards without redesign.

T1 series high-frequency power transformer, compact PCB-mount design

Close-up of ferrite core, polyester film insulation, and molded bobbin assembly

2. Key Features

• High-frequency operation range from 100 kHz to 500 kHz
• Leakage inductance below 10 µH for low losses
• Inductance tolerance of ±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
• Three layers of yellow polyester film insulation tape with high dielectric strength
• UL94V-0 flame-retardant molded bobbin
• Compact 20 × 17.5 × 17.5 mm form factor with 4-pin through-hole (DIP) mounting

Core material and insulation structure: ferrite core, three-layer polyester film tape, UL94V-0 bobbin

3. Product Advantages

The high-permeability ferrite core is key to the T1 series' ability to operate at switching frequencies. In the 100 kHz to 500 kHz range, it maintains low core loss and leakage inductance below 10 µH, enabling efficient energy transfer from the primary to the secondary side while minimizing stray magnetic field leakage to adjacent components on the board.

This efficiency translates into power density: up to 5.0 W/cm³ within a 20 × 17.5 × 17.5 mm volume, conversion efficiency up to 95%, and a temperature rise below 40 °C. The transformer runs cooler and occupies less board area, leaving room for the rest of the circuit and helping the end product meet its thermal budget requirements.

The insulation system is designed for safety and durability. Three layers of yellow polyester film tape provide high dielectric strength between windings, the molded bobbin meets UL94V-0 flame retardant rating, and the DIP pins are suitable for reliable wave soldering. Inductance, turns ratio, and power ratings are customizable, with OEM/ODM manufacturing supported.

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

4. Application Areas

This transformer is specifically designed for high-frequency power conversion on PCBs and should be used within the rated 100 kHz to 500 kHz operating range.

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

T1 series transformer mounted on a switching power supply circuit board

Key highlights and customization options: standard form factor, custom inductance and turns ratio, OEM/ODM

5. Specifications

5.1 Electrical Performance

5.2 Construction and Materials

5.3 Mechanical Dimensions and Pin Configuration

Note: All mechanical dimensions are in millimeters (mm) with a tolerance of ±0.5 mm. Refer to the mechanical drawing for details. Top marking: T1.

4-pin PCB pad and terminal spacing: 10 ± 0.5 mm × 10 ± 0.5 mm

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

6. Quality and Testing Assurance

• Every unit undergoes 100% Hi-Pot withstand voltage testing and inductance/turns ratio testing.
• RoHS compliant, CE certified, and 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 custom manufacturing supported with customizable inductance, turns ratio, and power ratings.

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

Products in production undergoing electrical testing on the test bench

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