Description
SIEMENS & HALSKE PCC88 - 7DJ8 Price is for 1 preamp tube. This is very well known vacuum triode valve made in the mid-1960s by Siemens in Munich, West Germany. With O-getter, double staged gette support and gray plates. Stamped code isDJ7 ≠9B Tested VERY STRONG as follow: Ia1 = 18.7 mA | S1 = 12.6 mA/V | Ri1 = 2.5 kOhm | μ1 = 31.5 Ia2 = 21.4 mA | S2 = 17.9 mA/V | Ri2 = 1.9 kOhm | μ2 = 34.0 Tested under: Uf = 12.6V | Ua = 250V | Ug1 = -2.0V Where good starts at Ia=8.5mA and 100% is Ia=15.0mA Great tube for any DIY project or amplifier! Shipping will be Airmail registered with tracing number. Other shipping methods available on request.