FEATURES 1N4938UR-1 * 1N4938UR-1 AVAILABLE IN JAN, JANTX, AND JANTXV PER MIL-PRF* * * * * 19500/169 SWITCHING DIODE METALLURGICALLY BONDED HERMETICALLY SEALED DOUBLE PLUG CONSTRUCTION ALSO AVAILABLE AS LL4938, & MLL4938 MAXIMUM RATINGS AT 25 C Operating Temperature: Storage Temperature: Surge Current A, sine, 1uS: Surge Current B, sine, 1S: Total Power Dissipation: Operating Current: -65C to +175C -65C to +175C 2.0A 0.5A 500mW 100mA, TA= +25C Derating Factor: 0.667mA/C above TA= +25C D.C. Reverse Voltage (VRWM): 175V DC ELECTRICAL CHARACTERISTICS VF Ambient (C) IF mA 25 -55 100 100 IR Min Max Ambient V V (C) - 1.0 1.2 25 150 VBR V (dc) 175 175 Min Max Ambient A A (C) - 0.1 100 DESIGN DATA Case: Hermetically sealed glass package per MILPRF-19500/169 DO-213AA outline Lead Material: Copper clad steel Lead Finish: Tin/Lead Thermal Resistance (RJEC): 50C/W maximum AC ELECTRICAL CHARACTERISTICS AT 25C Symbol Capacitance @ 0V TRR @ IF =IR=30mA, IRec = 3mA. pF Min - Max 5 nsec - 50 Thermal Impedance (ZJX): 70C/W maximum Polarity: Cathode end is banded. IRELAND - GORT ROAD, ENNIS, CO. CLARE PHONE: TOLL FREE: FAX: WWW.MICROSEMI.COM +353 65 6840044 +186 62 702434 +353 65 6822298 U.S.A. DOMESTIC SALES CONTACT PHONE: TOLL FREE: (617) 926 0404 1 800 666 2999 25 IR A 100 Min Max V V 200 -