Current Limiter (LCL)


Advanced high performance semiconductor devices can be sensitive to Single Event Latch-Up (SEL) effect when exposed under radiation in the space environment. Even if SEL is a very rare event, it can lead to a self destruction of the device and shall be mitigated to ensure the relevant reliability and life time of the application. Therefore, a safe design for a mission critical space application shall include a protection device called the Larch-Up current Limiter (LCL).

The 3DPM0168 LCL monitors the power supply line of the semiconductor device and switches it off instantaneously in case of any overvoltage or “radiation induced SEL” in order to protect the device from over current and overheating.

Featuring specific radiation effect mitigation techniques and utilizing space design de-rating rules, the Rad Hard by Design 3DPM0168 LCL is an ITAR Free product and features a SEL/SEE LETth of 80 MeV-cm²/mg and a TID of 50 krad(Si).

The 3DPM0168 is manufactured with 3D PLUS Space Qualified stacking technology designed for for high reliability applications, and is available in a compact size and low weight 20-pin SOP package.

Key Features

Overvoltage protection for power lines from 0.8V to 6V and up to 2A

Very fast switch-off time (10µs max)

Very low voltage drop across the LCL

Adjustable Run & Standby threshold currents

Selection of the active threshold current via an external digital signal

Availability of two operating modes:

Automatic reconnection after an adjustable delay

Reconnection through the ON/OFF command

Protection Status signal for system supervision

Temperature Range -40°C / +115°C

Space Qualified Technology

Radiation tolerance:

  • TID > 50 krad(Si)
  • SEL > 80 MeV.cm²/mg at +125°C
  • SET immune

Compact size and low weight

No pure tin guaranteed (less than 97% tin)

Very long life time electronics (technology proven for 15 to 18 years missions in space)

Worldwide delivery guarantee



Inventor of 3D stacked Electronics for Space


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Rugged components able to withstand harsh environments and space radiation effects


Dense, fast, rad hardened, System in Packages, miniaturized


Over 16 years of flight heritage and 100 000 modules in Space