KT4.3-90/1S Key Switchable Attenuator Technical Specification Sheet

The KT4.3-90/1S stepping coaxial attenuator can adjust the circuit's signal level in 1dB steps without interrupting the circuit, and can also serve as an internal attenuator for instruments and equipment. It is used to adjust power levels in test systems, featuring compact size, high precision, and stable reliability.

1. Operating Frequency: DC-4.3GHz

2. Attenuation adjustment range: 0-90 dB step

3. Decrementing Steps: 1, 2, 4, 8, 16, 20, 20, 20, (dB)

4. Insertion Loss: ≤4.8dB

5. Standing Wave Ratio: ≤1.4

6. Single Key Attenuation Accuracy: ±1.5dB Max

Multi-key attenuation accuracy: ±2.0 dB Max (1-30 dB)

±5.0dB Max（31-60dB） 

±10.0dB Max（61-90dB） 

7. Rated Power: 5W

8. Connector Type: SMA-K-K or N-K-K

9. Temperature Range: -10℃ to +50℃ (Operation)

-40°C to +70°C (non-operating)

10. Dimensions: 130*20*35.5mm

11. Weight: 180g

Use Instructions:

Switch lifespan: 5,000 cycles, operating at a speed of 15-20 cycles per second for 5,000 cycles.

2. Gently press and release during use to avoid mechanical deformation such as loose or bent switches.