K1040…K1140
IPRS Băneasa
- Also known as
- K1040, K1040R, K4040, K4040R, K6040, K6040R, K1140, K1140R, K1040-S, K4040-S, K6040-S, K1140-S
- Manufacturer
- IPRS Băneasa
- Country
- Romania
- Year
- Unknown
- Category
- Components
- Type
- Diodes
- Documentation score
- 1/5
- Last edited
- 25 OCT 2026
Specifications
- Material
- Si
- Type
- rectifier diode
- Repetitive peak reverse voltage (VRRM)
- 100–1000 V (see Variants)
- Max. RMS forward current (IFRMSM)
- 60 A
- Max. average forward current (IFAVM)
- 40 A
- IFAVM given at
- TC = 90 °C
- Repetitive peak forward current (IFRM)
- 180 A
- Surge forward current (IFSM, 10 ms)
- 800–1000 A (see Variants)
- I²t
- 5000 A²s
- Forward voltage (VF)
- 1.2 V
- VF measured at IF
- 125 A
- Threshold voltage (VF0)
- 0.95 V
- Slope resistance (rF)
- 1.33 mΩ
- Reverse current (IR)
- 4 mA, 4 mA (TJ = 125 °C) (see Variants)
- Max. junction temperature (Tj)
- 150 °C
- Package
- F-62m, B-27 (see Variants)
Variants (12)
| Note | Compare | |||||
|---|---|---|---|---|---|---|
| K1040 | 100 | 1000 | 4 mA | F-62m | ||
| K1040R | 100 | 1000 | 4 mA | F-62m | reverse polarity | |
| K4040 | 400 | 1000 | 4 mA | F-62m | ||
| K4040R | 400 | 1000 | 4 mA | F-62m | reverse polarity | |
| K6040 | 600 | 1000 | 4 mA | F-62m | ||
| K6040R | 600 | 1000 | 4 mA | F-62m | reverse polarity | |
| K1140 | 1000 | 1000 | 4 mA | F-62m | ||
| K1140R | 1000 | 1000 | 4 mA | F-62m | reverse polarity | |
| K1040-S | 100 | 800 | 4 mA (TJ = 125 °C) | B-27 | 1990 catalogue | |
| K4040-S | 400 | 800 | 4 mA (TJ = 125 °C) | B-27 | 1990 catalogue | |
| K6040-S | 600 | 800 | 4 mA (TJ = 125 °C) | B-27 | 1990 catalogue | |
| K1140-S | 1000 | 800 | 4 mA (TJ = 125 °C) | B-27 | 1990 catalogue |
Click a column heading to sort. „+” adds a variant to the comparison (K1040…K1140).
Description
The K1040…K1140 is a series of silicon rectifier diodes made in Romania by IPRS Băneasa, listed in the Agenda radioelectronistului (2nd edition, 1989) with a repetitive peak reverse voltage VRRM of 100–1000 V and a maximum average forward current of 40 A [1]. Its codes are in the Variants table; the package drawing is in the Gallery.
The package drawing of this block is labelled „F-52m” in the 2nd edition; the same drawing is labelled F-62m for the KS and KU series in the same table, and the 1st edition (1983) labels it F-62m for the K series too [1][2].
Each code also exists with R at the end (printed „(R)”); on the package drawing the stud is the cathode for the codes without R and the anode for the codes with R [1].
The I.P.R.S. Băneasa Full Line Condensed Catalog (1990) lists the K1040, K4040, K6040, K1140, K1040-S, K4040-S, K6040-S and K1140-S among the „Standard rectifiers ( IFAVM < 100 A )” of its „Rectifiers” section [3]. The codes new on this page and the catalog values it did not have (IFAVM temperature, IF of VF, VF0, rF, TJM) are under Variants [3]. In this table VF and IR are maximum values (at the IF and TJ given), VF0 is a maximum and i²t is printed in kA²s; the codes marked „(R)” are also made with reverse polarity; the „-S” codes have a metal-glass case [3]. For the codes of this table already on this page the catalog gives IFSM 800 A (elsewhere on this page: 1000 A) [3].
Measurement conditions (as printed in the table): IFRMSM at Tamb = 90 °C; IFAVM at Tamb = 90 °C; VF at IF = 125 A; IR at Tamb = (125) °C; IFSM for 10 ms. Temperatures in brackets are printed in brackets in the table.
Gallery
No image available
No image available
No image availableDocuments
No documents available yet.
References
- [1]N. Drăgulănescu – „Agenda radioelectronistului”, 2nd edition, Editura Tehnică, 1989, section 27.1.2 „Diode redresoare produse în R.S.R.”, „Diode cu siliciu”, pp. 494–495
- [2]N. Drăgulănescu – „Agenda radioelectronistului”, 1st edition, Editura Tehnică, 1983, section 3.9.2.1 „Diode redresoare”, „Diode cu siliciu”, pp. 432–433
- [3]I.P.R.S. Băneasa – „Full Line Condensed Catalog”, 1990, section 5 „Silicon diodes”, „Rectifiers”, „Standard rectifiers ( IFAVM < 100 A )”, pp. 5-26…5-27