Data Sheet

155
BEYSCHLAG Catalogue 1999 / 2
Introduction
to BEYSCHLAG
Product
Overview
Flat Chip
Resistor Products
MELF
Resistor Products
Leaded
Resistor Products
Resistor Arrays
and Networks
Engineering
Sample Kits
Appendices
and Glossary
Distribution
Network
Leaded
Resistor Products
MBA / MBB / MBE Precision
• Advanced Thin Film Technology
• Low TC: 15 ... 50 ppm/K
• Precision Tolerance of Value: 0,1 and 0,25 %
• Superior Overall Stability: Class 0,05
• Wide Precision Range: 10 Ω ... 1,5 MΩ
• Sizes DIN: 0204 0207 0414
CECC: A B D
MBA, MBB and MBE Precision Leaded Thin Film Resistors combine the proven reliability of the professional
products with an advanced level of precision and stability. Therefore they are perfectly suited for applicati-
ons in the fields of test and measuring equipment along with industrial and medical electronics.
The production of the MBA, MBB and MBE Precision Thin Film Resistors strictly follows an extensive set of in-
structions established for reproducibility. A homogeneous film of metal alloy is deposited on a high grade
(85 % Al
2
O
3
) ceramic body and conditioned to achieve the desired temperature coefficient. Nickel plated steel
termination caps are firmly pressed on the metallised rods. A special laser is used to achieve the target value by
smoothly cutting a helical groove in the resistive layer without damaging the ceramics. A further conditioning is
applied in order to stabilise the trimming result. Connecting wires of electrolytic copper plated with 100 % pure tin
are welded to the termination caps. The resistors are covered by a base coating and a light blue outer lacquer. The
encapsulation provides electrical, mechanical and climatic protection. Four or five colour code rings designate the
resistance value and tolerance according to IEC 60 062.
The result of the determined production is verified by an extensive testing procedure performed on 100 % of the
individual resistors. Only accepted products are stuck directly on the adhesive tapes according to IEC 60 286-1.
The resistors are suitable for processing on automatic insertion equipment and cutting and bending machines.
They are suitable for automatic soldering using wave, reflow or vapour phase. The encapsulation is resistant to all
cleaning solvents commonly used in the electronics industry, including alcohols, esters and aqueous solutions.
The resistors are tested according to IEC 60 115 and IEC 60 068. They meet all requirements of CECC 40 101-806
and EN 140 100. On request, resistors with established reliability according to CECC 40 101-806 Version E are
available.
BEYSCHLAG has achieved "Approval of Manufacturer" according to EN 100 114-1. The release certificate for
"Technology Approval Schedule" according to CECC 240 001 is granted for the BEYSCHLAG manufacturing
process.
Precision
MBA 0204
MBB 0207
MBE 0414