BB125

The BB125 is a series of varicap diodes made in Romania by IPRS Băneasa, listed in the Agenda radioelectronistului (2nd edition, 1989) in a DO-35 (F-80) glass package [1]. Its codes are in the Variants table; the package drawing is in the Gallery.

The codes are printed „BB 125 A”, „BB 125 B” and „BB 125 C”. The table gives for all of them a peak reverse voltage VRM of 30 V, a junction temperature Tj of 150 °C, a capacitance ratio of 4…6 (as printed; column „Ctot (VR2)/Ctot (VR1)”) and a reverse current IRM of 0.05 µA at VR = 28 V; the capacitance Ctot of each code at VR = 25 V and at VR = 3 V is in the Variants table [1].

Coded as (Pro Electron system) [2]:

Part	Meaning
B	base material with an activation energy of 1.0–1.3 eV, e.g. silicon (1.1 eV)
B	variable-capacitance (varicap) diode
125	serial number: three digits (100–999), for components for general use
A	letter with no coded meaning, marking a constructional variant

The I.P.R.S. Băneasa Full Line Condensed Catalog (1990) lists the BB125, BB125A, BB125B and BB125C among the „Variable capacitance diodes” of its „Small signal” section [3]. The values of the codes new on this page are under Variants [3]. For the BB125 it gives VR ≥ 30 V, Ctot 2–3.2 pF (f = 1 MHz, VR = 25 V), Ctot ratio 4–6 (3/25 V/V), rs ≤ 0.8 ohms (Ctot = 9 pF), DO-35 case [3]. For the BB125A it gives VR ≥ 30 V, Ctot 2–2.35 pF (f = 1 MHz, VR = 25 V), Ctot ratio 4–6 (3/25 V/V), rs ≤ 0.8 ohms (Ctot = 9 pF), DO-35 case [3]. For the BB125B it gives VR ≥ 30 V, Ctot 2.25–2.65 pF (f = 1 MHz, VR = 25 V), Ctot ratio 4–6 (3/25 V/V), rs ≤ 0.8 ohms (Ctot = 9 pF), DO-35 case [3]. For the BB125C it gives VR ≥ 30 V, Ctot 2.5–3.2 pF (f = 1 MHz, VR = 25 V), Ctot ratio 4–6 (3/25 V/V), rs ≤ 0.8 ohms (Ctot = 9 pF), DO-35 case [3].

The values given for the BB125 elsewhere on this page [1] differ: Ctot ratio 4…6; package DO-35 (F-80), glass.