Model No.: ACME 300B (One Pair in a luxury gift box, replace other 300B tubes directly)
Aluminum Teflon Tube Base
Warranty: 24 Months
The price is for 1 PAIR/LOT (FACTORY TEST&MATCH)
Heater
Uf(DC)………………5V If(DC) …………… 1.2A Maximum Rating Ua……………480V Pa………40W Ik with cathode bias………100mA with fixed bias…………… 70mA Direct Interelectrode Capacitances input……………9PF output……………4.3 PF grid to plate……………15PF
Static parameter Ua……………… 300V -Ug……………60V Ia………………60mA Gm……………5.5mA/V ri……………… 0.7KΩ u ………………3.85 Pout……………6.6 W
We ship the package within 1-3 days after the payment cleared.*
Shipping via DHL or UPS or FedEx or other express delivery takes 3-7 business days with a tracking number.
Shipping via China Post EMS or HK Post EMS usually takes 7-14 business days with a tracking number.
Shipping via China Post air mail or HK Post air mail usually takes 10-30 business days with a tracking number.
Faster payment, faster delivery.
Buyer pays any import taxes or customs duty.
All items are marked as low value on postal paper for customs to send that our buyers can save some customs fees.
Standard Return Policy:
If the item shows up defective or damaged, please email us immediately.
ONE-YEAR WARRANTY!!!
Brand new replacement with 14 days.
Defective situation must be reported to seller within 14 days upon receipt.
Returned item should be in its original box with all packing materials and shipped to us via a traceable shipping way.
We carefully inspect returned items upon receipt before issuance of refunds or exchanges.
Please allow up to 10 business days for us to process your return.
The customer needs to pay for the shipping costs for returning.
International Shipping:
We ship goods to worldwide. All the packages will come with a tracking number.
Payment Methods
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