matched Quad PSVANE KT88-T Mark II classic grade Tubes replace CV5220 6550 KT88

Description

1 matched Quad PSVANE KT88-T Mark II classic grade Tubes remove CV5220 6550
KT88-TII is a beam power tetreode, its anode limited dissipation power is 42W. In the audio amplifier, the power can be 100W when it is used as push-pull class AB1 with double tubes, it can also be used in electronic voltage regulator circuit. KT88-TII  is similar with CV5220 and 6550,they can be replaced by each other.
Package listing:
KT88-T Mark II Tube
*4pcs (matched quad )
Heater
Uf  ……………6.3 V
If…………………………1.6 A
Maximum Rating
Ua……………………800 V
Ug2………………600 V
Ug1………………-200 V
Pa………………42 W
Pg2…………8 W
Ua+g2…………46 W
Ik……………………230 mA
Uh-k……………200 V
Tbulb…………………250 C
Rg1
with cathode bias
Pa+Pg2≤35W 0.47 MΩ
Pa+Pg2 > 35W 0.27 MΩ
with fixed bias
Pa+Pg2≤35W 0.22 MΩ
Pa+Pg2 > 35W 0.10 MΩ
Direct Interelectrode Capacitances
tetrode connection       triode connection
input………16 9.3 PF
output ……… 12 17PF
grid to plate………1.2 7.9 PF
tetrode connection
Ua…………………… 250 V
Ug2……………………250 V
Ia ……………………140 mA
Ig2(approx) ………3 mA
-Ug1(approx)………15 V
Gm ……………………12 mA/V
ri ……………………12 KΩ
Ug1-g2……………… 8
ri ……………………670 Ω
u………………………8
triode connection
Ua.g2…………………250 V
Ia+g2…………………143 mA
-Ug1(approx)………15 V
Gm ……………………12 mA/V
Payment:
1. All payment must be prepaid.
2. We only accpet payment via paypal. Please kindly check if you can do the payment via paypal before placing an order.
Shipping
1. We are not responsible for undeliverable address. We reserve the right to charge the shipping fee again for returned item due to wrong address.
2. Item are generally shipping out within 2 working days after your payment have been cleared. We ship on Monday to Friday (excluding Public Holidays).
3. Orders from the HongKong or Shenzhen will all be shipped out via the post postal.
4. We Ship to Worldwide, except the excluding country. Most delivered 10-30 business days.
Returns
1. We offer 30 days money back guarantee return policy.
2. We will responsible for the postage of damaged replacements. Refund will be made upon receipt of the returned item.