Alexander H Boonstra

Title: Alexander H Boonstra: Innovator in Resistor Technology

Introduction

Alexander H Boonstra is a notable inventor based in Eindhoven, Netherlands. He has made significant contributions to the field of resistor technology, holding a total of 9 patents. His work primarily focuses on the development of advanced resistance pastes used in the manufacturing of resistor bodies.

Latest Patents

One of his latest patents is for a resistance paste designed for the manufacture of a resistor body. This paste is suitable for silk-screening applications and comprises a mixture of Pb.sub.2 Rh.sub.x Ru.sub.2-x O.sub.7-y, along with a permanent binder and a temporary firable binder. The formula specifies that 0.15 ≤ x ≤ 0.95 and 0 ≤ y ≤ 1/2. The resulting resistor body demonstrates a temperature coefficient of resistance between -10 × 10.sup.-6 /°C and +10 × 10.sup.-6 /°C, maintaining stability across a temperature range from -55°C to +150°C. The resistance variation during the life of the resistor is remarkably small, less than ±0.5%. Another significant patent involves a resistive paste for manufacturing a resistor body through screen-printing. This paste includes a silver-palladium alloy and a metal oxidic compound that contains either PdO or can react with it, along with both permanent and temporary binders. The outcome is a low-ohmic resistor with a temperature coefficient of resistance less than 100 × 10.sup.-6 /°C, effective in a temperature range from -60°C to +200°C.

Career Highlights

Alexander H Boonstra is associated with U.S. Philips Corporation, where he has been instrumental in advancing resistor technology. His innovative approaches have led to the development of materials that enhance the performance and reliability of resistors in various applications.

Collaborations

He has collaborated with notable colleagues, including Cornelis A Mutsaers and Franciscus N Van Der Kruijs, contributing to the collective expertise in resistor technology at U.S. Philips Corporation.

Conclusion

Alexander H Boonstra's contributions to resistor technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence the development of advanced materials for electronic components.