TUBE, LINLAI, 2A3-N, PAIR MATCHED

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PID# 52551

CA$500.00
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2 In Stock

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Description

2A3 is direct-heated cathode middle- power double triode, and it is used as class A1, AB1 amplification.

Features of the 2A3

Ultra purity Permalloy with carbon coating plate – by nature this plate material has superior electron emission to create strong current, and tube life is longer

No-Contact design between filament structure and the glass enclosure to minimize external vibration and resonance

4 metal pole holding the filament structure – very sturdy for survive shipping and handling

Dome shaped glass enclosure – not supersized so it will fit in all current 2A3 tube space

Ceramic base with metal sleeve cover – leaves no finger print residual and never rust

Suggested burn-in time: 100 hrs

Specifications:

Heater

Uf ………………………… 2.5 V

If………………………… 2.5 A

Maximum Rating

Ua…………………………300 V

Pa…………………………15 W

Rg

with cathode bias…………………………0.5 MΩ

with fixed bias…………………………0.05 MΩ

Direct Interelectrode capacitances

input………………………… 7.5 PF

output…………………………16.5 PF

grid to plate…………………………5.5 PF

Static parameter

Ua………………………… 300 V

-Ug………………………… 45 V

Ia………………………… 60 mA

Gm………………………… 5.25 mA/V

ri………………………… 0.8 kΩ

μ………………………… 4.2

Pout…………………………3.5 W

Recommended Operating Conditions (reference value)

Class A1, single tube (fixed bias)

Ua………………… 250 V

-Ug……………………45 V

RL……………………2.5 kΩ

Ia(0)…………………60 mA

Gm……………………5.25 Ma/V

ri……………………0.8 Kω

μ……………………4.2

Pout……………………3.5 W

Dtot……………………5 %

Class AB1, push-full (fixed bias)

Ua……………300 　　300 V

-Ug……………62　　Rk=780Ω V

RL……………3 　　　　5 kΩ

üg(pk)………87　　　110 V

Ia(0)…………80　　　80 mA

Ia(max.sig)…140　　100 mA

Pout……………15 　　10 W

Dtot……………2.5　　5 %

Specifications

2 Items

Features

Tube Type Power
Tube Style Pair

Specific References

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