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TBJT03

injection transformer

The TBJT03 is an injection transformer designed for CS101-related immunity measurements over a high-frequency range. It provides galvanic isolation and acts as a high-pass filter between the signal source and the equipment under test (EUT) supply lines, enabling safe and accurate injection of test signals for conducted immunity testing.

Features

Key capabilities and advantages

  • Designed for CS101 immunity testing, particularly in conducted immunity applications.
  • Provides galvanic isolation between the signal source and the EUT supply lines.
  • Functions as a high-pass filter to suppress low-frequency components and allow high-frequency injection.
  • Robust design suitable for high-frequency injection with safety and compliance focus.

Specification

Technical specifications and parameters

Compliance RoHS
Impedance 50 Ω
Turns ratio 1:1; 56nF Y2 coupling capacitor on the EUT side
Characterized freq. range 10 Hz to 100 MHz
3 dB frequency range 50 kHz – 50 MHz typ.
Insertion loss (S21) 3 dB max. @ 50 MHz
Max. RF power rating 20W
Output voltage rating 300V AC @ 50/60 Hz, 210V AC @ 400 Hz; 500V DC
Residual 50 Hz voltage 40 mV at the input connector (high Z) @ 240V AC at the secondary terminals
Isolation test, EUT – Input 2500V, 22 GΩ
Primary connector (Input) BNC-Female
Secondary connectors (EUT) 4 mm safety banana jacks, 20 mm spacing
Operating temp. range 0°C – 50°C
Enclosure dimensions 70 mm x 60 mm x 140 mm
Weight 300 g

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