High-reliability discrete products
and engineering services since 1977
SILICON CONTROLLED RECTIFIERS
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.
RMS power dissipation(1)
RMS emitter current
Peak pulse emitter current(2)
Emitter reverse voltage
Interbase voltage †
Operating junction temperature range
Storage temperature range
Note 1: Derate 3.04mW/°C increase in ambient temperature.
Note 2: Duty cycle ≤ 1%. PRR = 10PPS.
† Base upon power dissipa on at TA = 25°C.
-55 to 125
-55 to 150
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise specified)
Intrinsic standoff ratio
(VB2B1 = 10V)(1)
0.70 - 0.85
(VB2B1 = 3.0V, IE = 0)
RBB 4.0 6.0 9.1 kohms
Interbase resistance temperature coefficient
(VB2B1 = 3.0v, IE = 0, TA = -65° to 125°C
Emitter saturation voltage
(VB2B1 = 10V, IE = 50mA)(2)
Modulated interbase current
(VB2B1 = 10V, IE = 50mA)
Emitter reverse current
(VB2E = 30V, IB1 = 0)
Peak point emitter current
(VB2B1 = 25V)
IP - 1.0 5.0 µA
Valley point current
(VB2B1 = 20V, RB2 = 100ohms)(2)
Base-one peak pulse voltage
Note 1: Intrinsic standoff ration: VP = η VB2B1+ VF, where VF is about 0.49V at 25°C @ IF = 10µA and decreases with temperature at about 2.5mV/°C. Components R1, C1, and the UJT form a
relaxation oscillator; the remaining circuitry serves as a peak –voltage detector. The forward drop of diode D1 compensates for VR. To use, the “cal” button is pushed and R3 is adjusted to make the
current meter, M1, read full scale. When the “cal” button is released, the value of η is read directly from the meter, if full scale on the meter reads 1.0.
Note 2: Use pulse techniques: PW ≈ 300µs duty cycle ≤ 2% to avoid internal heating due to interbase modulation which may result in erroneous readings.