Surface Mount Limiter Diode

The CLA4603-085LF is a surface mountable, low capacitance silicon PIN limiter diode designed as a shunt connected PIN diode for high power limiter applications from 10 MHz to over 10 GHz.

Maximum resistance at 10 mA is 2 Ω and maximum capacitance at 6 V is 0.4 pF. The combination of low junction capacitance, low parasitic inductance, low thermal resistance, and nominal 1.5 um I-region width, makes the CLA4603-085LF useful in large signal limiter applications. The threshold level is +9 dBm, nominal.


Product LifecycleIn Production
RF Test Frequency (GHz)1
Typical Insertion Loss (dB) Pin = 0 dBm0.1
Typical Threshold Level (dBm)9
Maximum Saturated Power (Watts)3
VB IR = 10 µA (V)20-45
I Region Thickness (µm) Nominal1.5
CT (pF) 0 V, F=1 MHz0.36 Typ.
CT (pF) 0 V, F=1 GHz
CT (pF) 6 V, F=1 MHz0.40 Max.
CT (pF) 30 V, F=1 MHz0.32 Typ.
RS IF = 10 mA F = 100 MHz (Ω)2.0 Max.
Carrier Lifetime TL (ns) IF=10 mA10 Typ.
Package (mm)2 x 2


  • Low-thermal resistance: 96 °C/W
  • Typical threshold level: +9 dBm
  • Low capacitance: 0.33 pF
  • Low profile, ultra-miniature QFN (3-pin, 2 x 2 mm) package (MSL1, 260 °C per JEDEC J-STD-020)

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