GT03 Series

SMT Gate Drive Transformers

The GT03 Series features a robust SMT construction designed for high-isolation, high-frequency power conversion and gate driver applications. With a maximum height of 6.8 mm and a compact 16.15 mm × 10.7 mm footprint, the series delivers reliable magnetic performance in demanding, space-limited designs.

Engineered for isolated gate drivers, AC/DC and DC/DC converter stages, and fast high-frequency switching circuits, the GT03 Series supports stable operation across a wide frequency range while maintaining a dependable 1500 VDC isolation rating. Its optimized core geometry and tight magnetic coupling ensure efficient energy transfer, low leakage inductance, and excellent repeatability in automated manufacturing environments.

Key Features

6.8 mm maximum profile for mid-height SMT designs
Compact 16.15 mm × 10.7 mm surface-mount footprint
Optimized for automated pick-and-place assembly
High-frequency operation suitable for modern switch-mode designs
Robust 1500 VDC isolation rating
Low leakage inductance with strong magnetic coupling
Excellent performance in SiC/GaN switching environments

APPLICATIONS

Isolated gate driver circuits (Si MOSFET and IGBT)
High-frequency AC/DC and DC/DC converter topologies
Industrial motor drives and inverter control systems
High-side and low-side switch control
Battery management systems and energy storage platforms
Feedback and signal isolation for SMPS designs
High-efficiency power conversion modules

Electrical Specifications @ 25°C - Operating Temperature Range¹: -40°C to +130°C

Part Number

Turns Ratio (N1:N2:N3)

Drive
Inductance² (μH,Min)

DCR
(Pri:Sec) (mΩ,Max)

Leakage Inductance (nH,Max)

SRF³
(3-4)
(MHz,Typ)

ET Product⁵
(V-μs,Max)

Hi-Pot
(Drive:Gate)

GT03-111-034-A

1:1:1

882

550:550

300

3.3

34.6

1500 V_DC

View

GT03-111-052-A

1:1:1

1985

850:850

370

1.3

51.9

1500 V_DC

View

GT03-111-069-A

1:1:1

2000

1300:1300

300

1.5

1500 V_DC

View

GT03-111-110-A

1:1:1

5100

1900:1900

550

0.6

110

1500 V_DC

View

GT03-122-037-A

1:2.5:2.5

162

265:590

180

3.6

37.1

1500 V_DC

View

GT03-122-055-A

1:2.5:2.5

365

400:900

300

1.1

55.6

1500 V_DC

View

GT03-111-034-B

1:1:1

882

600:600

360

2.4

34.6

3750 V_AC

View

GT03-111-069-B

1:1:1

2000

1430:1300

470

1.3

3750 V_AC

View

GT03-122-037-B

1:2.5:2.5

162

280:590

240

3.1

37.1

3750 V_AC

View

Part Number

ET Product⁵
(V-μs,Max)

GT03-111-034-A

34.6

View

GT03-111-052-A

51.9

View

GT03-111-069-A

View

GT03-111-110-A

110

View

GT03-122-037-A

37.1

View

GT03-122-055-A

55.6

View

GT03-111-034-B

34.6

View

GT03-111-069-B

View

GT03-122-037-B

37.1

View

Mechanical Drawing

Recommended PCB Layout

Schematic

1.
Operating Temp. Range: The combination of ambient temperature and temperature rise.
2.
Drive Inductance: Tested at 100kHz, 0.1 V_RMS.
3.
SRF: Values are for reference only.
4.
Flammability Standard: Meets UL 94V-0.
5.
ET Product: The maximum ET is based upon a flux density of 2200 Gauss at 25°C.
ET = E_P/2f
Where as, E_P = Primary Voltage (V) f = Frequency (Hz)
6.
Suitable for bipolar applications only.
7.
PACKAGING
- Reel Diameter: 13″
- Reel Width: 24mm
- Pieces/Reel: 500

Specifications subject to change without prior notice.

GT03 Series

SMT Gate Drive Transformers

Key Features

APPLICATIONS

Electrical Specifications @ 25°C - Operating Temperature Range1: -40°C to +130°C

Part Number

Turns Ratio (N1:N2:N3)

Drive Inductance2 (μH,Min)

DCR (Pri:Sec) (mΩ,Max)

Leakage Inductance (nH,Max)

SRF3 (3-4) (MHz,Typ)

ET Product5 (V-μs,Max)

Hi-Pot (Drive:Gate)

Part Number

ET Product5 (V-μs,Max)

Mechanical Drawing

Recommended PCB Layout

Schematic

Electrical Specifications @ 25°C - Operating Temperature Range¹: -40°C to +130°C

Drive
Inductance² (μH,Min)

DCR
(Pri:Sec) (mΩ,Max)

SRF³
(3-4)
(MHz,Typ)

ET Product⁵
(V-μs,Max)

Hi-Pot
(Drive:Gate)

ET Product⁵
(V-μs,Max)