2N3980 PN UNIJUNCTION TRANSISTOR High-reliability discrete products and engineering services since 1977 FEATURES Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number. Available as non-RoHS (Sn/Pb plating), standard, and as RoHS by adding “-PBF” suffix. MAXIMUM RATINGS Rating RMS power dissipation (1) RMS emitter current Peak pulse emitter current (2) Symbol Value Unit PD 360 mW Ie 60 mA ie 1 Amp Emitter reverse voltage VB2E 30 Volts Interbase voltage VB2B1 35 Volts Tstg -65 to 200 °C Storage temperature range ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise specified) Characteristic Intrinsic standoff ratio VB2B1 = 10V (1) Symbol ŋ Interbase resistance VB2B1 = 3V, IE = 0 RBB Interbase resistance temperature coefficient VB2B1 = 3V, IE = 0, TA = -65 to +100°C αRBB Emitter saturation voltage VB2B1 = 10V, IE = 50mA (2) VEB1(sat) Modulated interbase current VB2B1 = 10V, IE = 50mA IB2(mod) Emitter reverse current VB2E = 30V, IB1 = 0 VB2E = 30V, IB1 = 0, TA = 125°C IEB20 Peak point emitter current VB2B1 = 25V IP Valley point current VB2B1 = 20V, RB2 = 100Ω (2) IV Base one peak pulse voltage(3) Figure 3 VOB1 Maximum oscillation frequency Figure 4 f(max) Min Typ Max 0.68 - 0.82 4 6 8 0.4 - 0.9 - 2.5 3 12 15 - - 5 - 10 1 - 0.6 2 1 4 10 6 8 - - 400 - Unit kΩ %/°C Volts mA nA µA µA mA Volts kHz Note 1: Intrinsic standoff ratio, ŋ is defined by equation: ŋ = VP – (VEB1) VB2B1 Where: VP = Peak point emitter voltage VB2B1 = Interbase voltage VF = emitter to base-one junction diode drop (0.45V @ 10µA) Note 2: Use pulse techniques: PW ≈ 300µs duty cycle ≤ 2% to avoid internal heating due to interbase modulation which may result in erroneous readings. Note 3: Base-one peak pulse voltage is measured in circuit of Figure 3. This specification is used to ensure minimum pulse amplitude for applications in ACR firing circuits and other types of pulse circuits. MECHANICAL CHARACTERISTICS Rev. 20121019 High-reliability discrete products and engineering services since 1977 Case: TO-18 Marking: Body painted, alpha-numeric Pin out: See below 2N3980 PN UNIJUNCTION TRANSISTOR Rev. 20121019 High-reliability discrete products and engineering services since 1977 2N3980 PN UNIJUNCTION TRANSISTOR Rev. 20121019