Evaluierung der NPN-Si-HF-Transistorserie BFY 405, -420, -450 fuer Raumfahrtanwendungen Abschlussbericht

1. The bipolar Siemens Microwave Si-Transistor Family of the 4. Generation (SIEGET, f_T>20 GHz) was evaluated acc. to ESA/SCC Basic Spec. 2265010. 2. The transistors are assigned for space application in intended European Space Projects. 3. As the representative of this family the highest power type BFY 450 was selected for Evaluation Testing. The following tests (work packages AP) were carried out: AP 1.1: Drafted Issue of the ESA/SCC Detail Specification 5611/008, transmitted to ESA AP. 1.2: Preparation of the 'Product Identification Document' (P.I.D.) / Siemens Doc.: A66500-T503-A1-1A-76K5. AP 1.3: Production of >60 test samples BFY 450 acc. to ESA/SCC Generic Spec. 5010 - Chart II. Case: Micro-X, hermetically sealed. AP 1.4: Evaluation testing in accordance with Chart I A -Para 5 and 6.1, ESA/SCC Basic Spec. 2265010. AP 1.5: Temperature Characterisation of the Parameters of Tab. 2a in the range -50 C to +150 C was carried out. The stable DC Forward Current Transfer Ratio hFE is to point out. AP 1.6: During the Power Burn-in (Life Test) with Tj=250 C no reject occurred. The device hours of Power Burn-in were 60.000. 4. The aimed results were reached within time and expenditure limit. 5. The following qualification shall verify the results. (orig.)SIGLEAvailable from TIB Hannover: DtF QN1(42,43) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany); Deutsche Agentur fuer Raumfahrtangelegenheiten (DARA) GmbH, Bonn (Germany)DEGerman