BI-DIRECTIONAL DIAC DB3 & DB4 Series SPECIFICATIONS Parameters Symbol Breakover Voltage V(BR)1, V(BR)2 Breakover Voltage Symmetry |V(BR)1|-|V(BR)2| Dynamic Breakback Voltage I±V DI Breakover Current I(BR)1 AND I(BR)2 Peak Pulse Current for IP 10ms, 120pps, TA£4°C * DMMDB3 & DMMDB4 are DL-35 (mini-MELF). DB3 & DB4 are DO-35. DIMENSIONS *(DMM)DB3 *(DMM)DB4 Units 28 35 V min 32 40 V typ 36 45 V max 3 3 V max 5 5 V max 50 50 mA max 2.0 2.0 A max MINI-MELF Drawing (mm) DO-35 Glass Case Outline Drawing (mm) 2.0 Max Cathode Cathode Mark f0.52 1.35±0.05 A A 4.2 Max 0.3±0.1 3.3±0.1 0.3±0.1 CURVES V-I Characteristics Repetitive Peak On-State Current vs Pulse Duration CURRENT Breakover Voltage Test Circuit 1.0 Pulse repetition rate = 120PPS Tz= 40°C D28 32 35 40 50 0.1 D60 RF VC 120V RMS 60Hz D.U.T. 200W 1% 0.1mF Safe Operating Area -Vbo Breakover Current VOLTAGE +Vbo Adjust for one firing in half cycle 0.01 0.001 10 100 1000 10000 Ibo Normalized VBO Change vs Junction Temperature +8 D28 32 35 40 50 +6 +4 PART NUMBER EXAMPLE Test Circuit Waveforms +V(80) V+ 0 t -V(80) V- D60 +2 0 -2 DMM DB3 R +IP -4 0 -6 -8 Packaging R - Tape & Reel A - Tape & Ammo B - Bulk Packaging Series DM3 for 32 volts. DM4 for 40 volts. Surface mount. Omit for thru hole. t -IP -40 -20 0 +20 +40 +60 +80 +100 +120 +140 RFE International • Tel:(949) 833-1988 • Fax:(949) 833-1788 • E-Mail [email protected] C3CC03 REV 2001