|
42SPTSensibly equivalent¶ to:CV1444
|
|
|
The 42SPT is a screened pentode that was designed for video amplification in early television receivers. This would be a bandwidth not exceeding 3 MHz. It has a high mutual conductance or μ that is essential for a wideband amplifier. 1040 gives a maximum anode current of 64 mA.The classic envelope is 58 mm in diameter and, excluding the B7 base pins, is 127 mm tall.References: 1040 & 1043. Type 42SPT was first introduced in 1937. See also 1937 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | tc |  m | g1 | g3 | h | h | k | g2 | a |
|
|
Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | mAa | mAs | gm |
| 4.0 | 2.0 | 250 | 250 | -15 | 27 | 15 | 11 |
|
Updated December14, 2012.
|
|
