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PC88 — Small Signal Triode, Noval | Tubeofile | Tubeofile
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PC88
Small Signal Triode — Noval — Philips
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Data: High
High quality — base, heater, all universal parameters present, and ≥50% of desirable parameters filled in. Safe to use for design decisions.
↗ TDSL
↗ Radiomuseum
Known Equivalents & Substitutes
4DL4
LZ319
Similar Tubes (Not Drop-In Compatible)
6DL4
American 6.3V version of the same tube — different heater voltage
EC88
Same tube with 6.3V parallel heater (E-series) — not interchangeable in series-string circuits
PC86
Similar UHF triode from same family — grounded-grid RF amplifier version, same base
Electrical Specifications
Absolute Maximum
Anode Voltage (max)
Anode Voltage (max)
150
V
Anode Dissipation (max)
Anode Dissipation (max)
2.5
W
Typical Operating
Anode Voltage (typical)
Anode Voltage (typical)
120
V
Grid 1 Bias Voltage
Grid Bias Voltage
-1
V
Notes
The PC88 is designed for UHF television tuner service, typically as oscillator-mixer. Used in European TV sets from the 1960s-70s.
Pro-Electron prefix P indicates 300mA series heater operation (3.6V at 300mA = 1.08W heater power).
Brans Vademecum lists 9J6 and LZ319 as equivalents.
Muiderkring category code 't' = triode.
Pin Layout — Noval
1
2
3
4
5
6
7
8
9
1
Anode
2
Anode (connected to pin 1)
3
Cathode
Socket-Compatible Tubes
⚠ Not electrically compatible
AL860
References
https://tdsl.duncanamps.com/show.php?des=PC88
Anode Current
Anode Current
15
mA
Anode Resistance
Anode Resistance
4,000
Ω
Transconductance
Transconductance
12.5
mA/V
Amplification Factor (μ)
Amplification Factor
50
—
Heater
Heater Voltage
Heater Voltage
3.6
V
Heater Current
Heater Current
0.3
A
4
Heater
5
Heater
6
Cathode (connected to pin 3)
7
Grid
8
Grid (connected to pin 7)
9
Internal shield