PMP 53

The PMP 53 is a metallised polyester capacitor in a cylindrical can 35 mm in diameter, with three tab terminals, made to STAS 9085-71 for general use in DC or AC (50 Hz) circuits [1]. The Agenda radioelectronistului (2nd edition, 1989) gives a single value, 5.3 µF ± 10 % at 400 V DC; the 1st edition (1983) has the same data, under the misprinted section number „32.10.” [1][2].

The Agenda does not say which works made the series: for the whole section on capacitors made in Romania it lists IPEE Electroargeș of Curtea de Argeș, Tehnoton of Iași, IIS Electronica of Bucharest and IPRS Băneasa as producers, and the 1st edition (1983) names only the first three [3][4]. It is listed here as made by IPRS Băneasa; Un secol de electronică în România says that the metallised polyester capacitor line of IPRS passed to IPEE Curtea de Argeș in 1982 [5].

In the book’s list of letter codes PMP stands for metallised polyester capacitors; the code PMP 53 has no package number [3][1]. The capacitors are marked in clear; the book’s example „PMP 09.02 — 0,047/400” gives the code, the nominal capacitance in µF and the rated voltage in V [3].

Dimensions in mm (fig. 20.23): Ø 35 ± 0.1, height max. 53; the three tab terminals project at most 10 mm below the base; in the base view terminals 2 and 3 are 10 ± 0.1 mm apart [1].