Vacuum Tube - EL844, JJ Electronics

Vacuum Tube - EL844, JJ Electronics

JJ Electronics
Vacuum Tube - EL844, JJ Electronics image 1
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Product Options
  • Apex Matched Pair (T-EL844-JJ-MP)
  • Apex Matched Quad (T-EL844-JJ-MQ)
are currently out of stock and will be placed on backorder.

The JJ Electronic EL844 is a variation on the classic tube which reduces the overall headroom by 25%. With the reduced power, hitting that rich distortion that the EL84 is notorious for is more manageable. This tube will hit full saturated power tube sounds without having to crank the amps volume as high which makes them a great choice for recording as well as home / bedroom use.

Apex Tube Matching
Matched versions of this tube use Apex Matching
RoHS Compliant
SKU:
T-EL844-JJ
Item ID:
004862
Brand:
JJ Electronics, Apex Matched
Type:
Part Numbers
Single or MatchedOur Part NumberUPC/EAN
Apex Matched PairT-EL844-JJ-MP609722127455
Apex Matched QuadT-EL844-JJ-MQ609722127462
SingleT-EL844-JJ609722127448
Product Measurements by Type
Body Height71.4 mm
Cathode Current (Ik)≤ 60 mA
Filament Current (If)0.76 A
Filament Voltage (Uf)6.3 V
Grid 1 to filament capacitance (cg1f)0.15 pF
Grid Circuit Resistance 1 (Rg1), Automatic Bias1 MΩ
Grid Circuit Resistance 1 (Rg1), Fixed Bias0.5 MΩ
Grid Voltage 1 (Ug1)≥ -100 V, -7.3 V typical
Grid Voltage 2 (Ug2)≤ 300 V, 250 V typical
Grid to Cathode Capacitance (cg/k)10.8 pF
Grid to Plate Capacitance (ca/g)0.1 pF
Heater to cathode voltage (Uk/f)≤ 100 V
Internal Resistance (Ri)0.1 MΩ
Item Diameter22 mm
Item Height77.8 mm
Plate Capacitance (ca)6.6 pF
Plate Current (Ia)10 mA
Plate Dissipation (Wa)≤ 9 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)6.5 mA/V
Packaging Information
Packaging DimensionsApex Matched Pair versionT-EL844-JJ-MP3.6 in. × 2 in. × 1 in.
Apex Matched Quad versionT-EL844-JJ-MQ3.6 in. × 2 in. × 2 in.
Single versionT-EL844-JJ1 in. × 1 in. × 3.6 in.
Weight (Packaging)Apex Matched Pair versionT-EL844-JJ-MP0.08 lbs.
Apex Matched Quad versionT-EL844-JJ-MQ0.16 lbs.
Single versionT-EL844-JJ0.04 lbs.
Product Measurements by Item
T-EL844-JJ-MP - Apex Matched Pair versionBody Height71.4 mm
Cathode Current (Ik)≤ 60 mA
Filament Current (If)0.76 A
Filament Voltage (Uf)6.3 V
Grid 1 to filament capacitance (cg1f)0.15 pF
Grid Circuit Resistance 1 (Rg1), Automatic Bias1 MΩ
Grid Circuit Resistance 1 (Rg1), Fixed Bias0.5 MΩ
Grid Voltage 1 (Ug1)≥ -100 V, -7.3 V typical
Grid Voltage 2 (Ug2)≤ 300 V, 250 V typical
Grid to Cathode Capacitance (cg/k)10.8 pF
Grid to Plate Capacitance (ca/g)0.1 pF
Heater to cathode voltage (Uk/f)≤ 100 V
Internal Resistance (Ri)0.1 MΩ
Item Diameter22 mm
Item Height77.8 mm
Plate Capacitance (ca)6.6 pF
Plate Current (Ia)10 mA
Plate Dissipation (Wa)≤ 9 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)6.5 mA/V
T-EL844-JJ-MQ - Apex Matched Quad versionBody Height71.4 mm
Cathode Current (Ik)≤ 60 mA
Filament Current (If)0.76 A
Filament Voltage (Uf)6.3 V
Grid 1 to filament capacitance (cg1f)0.15 pF
Grid Circuit Resistance 1 (Rg1), Automatic Bias1 MΩ
Grid Circuit Resistance 1 (Rg1), Fixed Bias0.5 MΩ
Grid Voltage 1 (Ug1)≥ -100 V, -7.3 V typical
Grid Voltage 2 (Ug2)≤ 300 V, 250 V typical
Grid to Cathode Capacitance (cg/k)10.8 pF
Grid to Plate Capacitance (ca/g)0.1 pF
Heater to cathode voltage (Uk/f)≤ 100 V
Internal Resistance (Ri)0.1 MΩ
Item Diameter22 mm
Item Height77.8 mm
Plate Capacitance (ca)6.6 pF
Plate Current (Ia)10 mA
Plate Dissipation (Wa)≤ 9 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)6.5 mA/V
T-EL844-JJ - Single versionBody Height71.4 mm
Cathode Current (Ik)≤ 60 mA
Filament Current (If)0.76 A
Filament Voltage (Uf)6.3 V
Grid 1 to filament capacitance (cg1f)0.15 pF
Grid Circuit Resistance 1 (Rg1), Automatic Bias1 MΩ
Grid Circuit Resistance 1 (Rg1), Fixed Bias0.5 MΩ
Grid Voltage 1 (Ug1)≥ -100 V, -7.3 V typical
Grid Voltage 2 (Ug2)≤ 300 V, 250 V typical
Grid to Cathode Capacitance (cg/k)10.8 pF
Grid to Plate Capacitance (ca/g)0.1 pF
Heater to cathode voltage (Uk/f)≤ 100 V
Internal Resistance (Ri)0.1 MΩ
Item Diameter22 mm
Item Height77.8 mm
Plate Capacitance (ca)6.6 pF
Plate Current (Ia)10 mA
Plate Dissipation (Wa)≤ 9 W
Plate Voltage (Ua)≤ 300 V, 250 V typical
Transconductance (S)6.5 mA/V

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet391.17 KB