Date: 26/10/2010

Two new MOSFETs from Vishay for implantable medical applications

Vishay Intertechnology has added two new devices in its family of power MOSFETs for implantable medical applications.

The devices released include:
1. n- and p-channel 12 V MOSFET in the PowerPAK SC-70 (SMMA511DJ)
2. 20 V dual n-channel MOSFET in the PowerPAK SC75 (SMMB912DK).

Vishay says that the new MOSFETs are distinguished from commercial devices by their high quality and reliability as ensured by enhanced quality control gates for every lot: statistical bin limit (SBL), yield limit (SYL), and part average testing (PAT) controls for wafers and component packages, and homogeneous reliability testing for all wafer lots. The SMM medical MOSFET process flow also includes an acceptable quality level (AQL) of 0.04%.

The new MOSFETs will include load switching in drug delivery systems, defibrillators, pacemakers, hearing aids, and other implantable devices. These MOSFETs save space in miniaturized medical devices, while their ultra-low on-resistance, down to 0.040O, will lower conduction losses and thus maximize battery life.

Key device specifications are presented in the following table;

Part number SMMA511DJ SMMB912DK
Package PowerPAK SC-70 PowerPAK SC-75
Type n-channel p-channel dual n-channel
VDS(V) 12 - 12 20
RDS(ON) @ 4.5 V (O) 0.040 0.070 0.215
RDS(ON) @ 2.5 V (O) 0.048 0.100 0.268
RDS(ON) @ 1.8 V (O) 0.063 0.140 0.375


Availability: Sampling now. Production quantities is scheduled to be available in Q4 2010