FEATURES 1N4938-1 AVAILABLE IN JAN, JANTX, AND JANTXV PER MIL-PRF- 1N4938-1 19500/169 SWITCHING DIODE METALLURGICALLY BONDED HERMETICALLY SEALED DOUBLE PLUG CONSTRUCTION MAXIMUM RATINGS AT 25 C Operating Temperature: -65C to +175 C Storage Temperature: -65C to +175 C Surge Current A, sine, 1uS: 2.0A Surge Current B, sine, 1S: 0.5A Total Power Dissipation: 500mW Operating Current: 100mA, T = +25C A Derating Factor: 0.667mA/C above T = +25 C A D.C. Reverse Voltage (VRWM): 175V DC ELECTRICAL CHARACTERISTICS V I V F R BR Ambient Ambient Ambient I Min Max Min Max I Min Max F R (C) mA V V (C) V (dc) A A (C) A V V 25 100 - 1.0 25 175 - 0.1 25 100 200 - -55 100 - 1.2 150 175 - 100 DESIGN DATA Case: Hermetically sealed glass package per MIL- PRF-19500/169 DO-35 outline AC ELECTRICAL CHARACTERISTICS AT 25C Lead Material: Copper clad steel Symbol Min Max Lead Finish: Tin/Lead Capacitance 0V pF - 5 Thermal Resistance (R ): 250C/W maximum JL T I =I =30mA, at L=.375 RR F R nsec - 50 I = 3mA. Thermal Impedance (Z ): 70C/W maximum Rec JX Marking: Alpha numeric. Polarity: Cathode end is banded. IRELAND - GORT ROAD, ENNIS, CO. CLARE PHONE: +353 65 6840044 TOLL FREE: +186 62 702434 FAX: +353 65 6822298 WWW.MICROSEMI.COM U.S.A. DOMESTIC SALES CONTACT PHONE: (617) 926 0404 TOLL FREE: 1 800 666 2999