RPM 3000
IPEE Curtea de Argeș
- Also known as
- RPM
- Manufacturer
- IPEE Curtea de Argeș
- Country
- Romania
- Year
- Unknown
- Category
- Components
- Type
- Resistors
- Documentation score
- 1/5
- Last edited
- 16 OCT 2026
Specifications
- Type
- metal film
- Standard
- STAS 3799-75
- Resistance (Rn)
- 10 Ω…2 MΩ
- Resistance, min
- 10 Ω
- Resistance, max
- 2000000 Ω
- Tolerance
- ±0.25/0.5/1/2/5 %
- Value series
- E24, E48, E96, E192
- Limit voltage (Unlim)
- 125–500 V (see Variants)
- Temperature coefficient
- ±50 (code a), ±100 (b), ±200 (c) ·10⁻⁶/°C
- Noise factor (F)
- < 0.25 µV/V (10 Ω ≤ Rn ≤ 100 kΩ), < 1 µV/V (Rn > 500 kΩ)
- Climatic category
- 55/155/56
- Package
- flat, radial leads
- Max. diameter (Dmax)
- 5–7.5 mm (see Variants)
- Max. length (Lmax)
- 5–12.7 mm (see Variants)
- Lead diameter (d)
- 0.64 mm
- Lead spacing (d)
- 2.54–7.62 mm (see Variants)
- Application
- professional electronic circuits, for their precision and stability with a low temperature coefficient
Variants (4)
| Compare | ||||||||
|---|---|---|---|---|---|---|---|---|
| RPM-3012 | 50 Ω…150 kΩ | 50 | 150000 | 125 | 5 | 5 | 2.54 | |
| RPM-3025 | 20 Ω…1 MΩ | 20 | 1000000 | 250 | 7.5 | 5 | 2.54 | |
| RPM-3050 | 10 Ω…1 MΩ | 10 | 1000000 | 350 | 7.5 | 7.5 | 5.08 | |
| RPM-3100 | 10 Ω…2 MΩ | 10 | 2000000 | 500 | 7.5 | 12.7 | 7.62 |
Click a column heading to sort. „+” adds a variant to the comparison (RPM 3000).
Description
The RPM 3000 is a series of metal-film resistors with radial leads, made to STAS 3799-75 for professional electronic circuits, where high precision and stability are needed together with a low temperature coefficient [1]. The Agenda radioelectronistului (2nd edition, 1989) lists four codes, RPM-3012 to RPM-3100, from 10 Ω to 2 MΩ, with tolerances from ±0.25 % and limit voltages of 125–500 V, in the series up to E192 [1].
The Agenda radioelectronistului names IPEE Electro-Argeș of Curtea de Argeș as the producer of all the resistors in its section on resistors made in Romania, in both editions [3][4]. Un secol de electronică în România says that the works, founded in 1972 as ICEP, took over the resistor lines that IPRS Băneasa made under a Thomson-CSF licence: the carbon resistors in 1973 and the wire-wound resistors in 1974 [5].
Coded as [3]:
| Part | Meaning |
|---|---|
| RPM | construction type: metal-film resistor („rezistor cu peliculă metalică”) |
| 3 | package type („tipul capsulei”, 1…6) |
| 012, 025, 050, 100 | rated power: 0.125, 0.25, 0.5 and 1 W |
The temperature coefficient is given by a letter: a = ±50, b = ±100, c = ±200·10⁻⁶/°C [1]. Romanian resistors are generally marked in clear, with the series code, the nominal value (100 = 100 Ω, 1 K = 1 kΩ, 1 M = 1 MΩ), the tolerance [3].
The 1st edition (1983) calls the series RPM and gives the temperature coefficients as ±50, ±100 and ±150·10⁻⁶/°C, without letters; its table is the same [2].
Dimensions in mm (fig. 16.4): maximum width Lmax, maximum height Dmax and lead spacing d (± 0.05) from the table; thickness at most 2.54, leads Ø 0.64 and 5…10 long [1].
Gallery
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References
- [1]N. Drăgulănescu – „Agenda radioelectronistului”, 2nd edition, Editura Tehnică, 1989, section 16.3.4 „Rezistoare cu peliculă metalică, seria RPM 3000”, p. 186
- [2]N. Drăgulănescu – „Agenda radioelectronistului”, 1st edition, Editura Tehnică, 1983, section 3.1.3.4 „Rezistoare cu peliculă metalică, seria RPM”, p. 155
- [3]N. Drăgulănescu – „Agenda radioelectronistului”, 2nd edition, Editura Tehnică, 1989, section 16.3 „Rezistoare produse în R.S.R.”, 16.3.1 „Codificare – marcare”, p. 184
- [4]N. Drăgulănescu – „Agenda radioelectronistului”, 1st edition, Editura Tehnică, 1983, section 3.1.3 „Rezistoare produse în R.S.R.”, 3.1.3.1 „Codificare – marcare”, p. 153
- [5]N. Millea, I. Constantinescu (coord.) – „Un secol de electronică în România”, Editura Academiei Române, 2020, sections VIII.1.2.6 and VIII.2, pp. 410 and 434–435