Tube-number record
NL-618
0 archive entries
NL-618 is a tube type in the TubeDatabase archive (class: Inert-Gas-Filled Rectifier). Recorded specifications: brand National Electronics, Inc., construction Rectifier, base Standard, Lug, or Bracket, socket 4-pin, and maximum plate voltage 900 V. The archive does not yet hold a photographed example of this type.
BrandNational Electronics, Inc.
ClassInert-Gas-Filled Rectifier
Base4-pin
Construction
Primary TypeRectifier
Rectifier TypeXenon-filled
EnvelopeGlass
Base MaterialStandard, Lug, or Bracket
SectionsSingle
Filament / Heater
MaterialCoated
Warm-up Time60s
Absolute Maximum Ratings
Plate Voltage900 V
Cathode Current6400 mA
H-C Voltage1500 V
Audio Performance
Key Features
- Inert-gas-filled
- Xenon-filled
- Wide temperature limits
- Sturdy rectifier
- Available in panel mounting bracket base (NL-618P)
- Available in lug type base (NL-618L)
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Rectifier | 9 V | — | — | — | 20000 mA |
Application Notes
Designed especially for industrial power rectifier and control applications. Light filament before applying load.
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