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TBFL1

Transient Limiter

The TBFL1 Transient Limiter is a protection device designed to safeguard sensitive RF measurement equipment such as spectrum analyzers and receivers from high-energy transient pulses. It allows RF signals to pass normally under standard levels but automatically limits excessive transient energy, preventing potential damage from electrostatic discharge (ESD), lightning pulses, or other high-power RF events. The unit is compact and rugged, making it ideal for both laboratory and field use where transient protection is required.

Features

Key capabilities and advantages

  • Protects RF test equipment from transient voltage and pulse spikes.
  • Automatically limits harmful high-energy events while allowing normal signals.
  • Low insertion loss for minimal impact on measurement accuracy.
  • Designed to handle high-energy transients such as ESD and lightning pulses.
  • Compact and rugged housing for lab and field applications.
  • Easy integration into RF test setups with standard RF connectors.
  • Suitable for protecting spectrum analyzers, receivers, and other sensitive RF instruments.

Specification

Technical specifications and parameters

Frequency range 9 kHz – 600 MHz
Attenuation 10 dB – 0.8/+1.6 dB in-band (9 kHz to 600 MHz)
Attenuation HP-filter > 40 dB @ 1kHz
Maximum continuous RF input power 5W (+37 dBm) in-band
Maximum DC input voltage ± 20V
Input matching, linear operating range 9 kHz – 600 MHz < – 16 dB
Output matching, linear operating range 9 kHz – 600 MHz < – 23 dB
Linear operating range up to 0 dBm input level, in-band
Limiting threshold +11 dBm (@ 37dBm input level)
Input connector N-female
Output connector N-male
Dimensions 156 mm x 26 mm x 26mm
Weight 170 g
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