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
The T1 Series is a compact high-frequency power transformer for PCB-mounted power conversion. High-permeability ferrite core, triple-layer yellow Mylar insulation and a UL94V-0 molded bobbin; 100 kHz – 500 kHz, leakage < 10 µH, power density up to 5.0 W/cm³, efficiency up to 95%, 20 × 17.5 × 17.5 mm, 4-pin DIP.
- Operating frequency 100 kHz – 500 kHz with leakage below 10 µH
- Power density up to 5.0 W/cm³, conversion efficiency up to 95%
- Temperature rise below 40 °C for easier thermal design
- Triple-layer Mylar insulation and UL94V-0 flame-retardant bobbin
- Standard 20 × 17.5 × 17.5 mm footprint, 4-pin DIP mount, custom ratios available
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
| Parameter | Value |
|---|---|
| Operating Frequency | 100 kHz – 500 kHz |
| Magnetic Leakage | < 10 µH |
| Inductance Tolerance | ±10% |
| Power Density | Up to 5.0 W/cm³ |
| Temperature Rise | < 40 °C |
| Conversion Efficiency | Up to 95% |
5.2 Construction and Materials
| Item | Specification |
|---|---|
| Core Material | High-permeability ferrite (low core loss) |
| Insulation | Triple-layer yellow Mylar insulating tape (high dielectric strength) |
| Bobbin | UL94V-0 flame-retardant molded bobbin |
| Mounting | Through-hole (DIP) mounting for reliable wave soldering |
| Pin Count | 4 pins (pins 1, 2, 3, 4) |
| Customization | Custom inductance, turns ratio and power ratings available |
| Manufacturing | OEM / ODM manufacturing, 100% quality tested |
5.3 Mechanical Dimensions and Pinout
| Parameter | Specification |
|---|---|
| Standard Footprint | 20 × 17.5 × 17.5 mm |
| Body Size (Top View) | 20 mm max × 17.5 mm max |
| Height (Front / Side View) | 17.5 mm max |
| Pin Length Below Body | 4 ± 1 mm |
| Pin Pitch | 10 ± 0.5 mm × 10 ± 0.5 mm |
| Pin Spacing, Pins 1–2 | 7.7 ± 0.5 mm |
| Primary Pin Diameter | Ø1.2 ± 0.1 mm |
| Secondary Pin Diameter | Ø0.8 ± 0.1 mm |
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 & 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.