-40%

NOS JAN 2C51 Sylvania Twin Triode Tube 1960 -Tests- Curves Traced-Gm Rp Ip Mu 03

$ 13.72

Availability: 19 in stock
  • Model: 2C51 396A 5670
  • Custom Bundle: No
  • Type: Preamp Tubes
  • Brand: SYLVANIA
  • Non-Domestic Product: No
  • Condition: New
  • Country/Region of Manufacture: United States
  • Modified Item: No

    Description

    NOS JAN 2C51 Sylvania Twin Triode Audio Tube 1960
    11/20/2022 1:02:45 PM   uTracer3+, GUI  V3.11  Triode Quick Test
    SYL 5670 112022SY03_SPECS
    SECTION 1
    Test conditions:
    Va  : 150.0 (V)              Swing +/- 15.00 V (10%)
    Vg  : -2 (V)                 Swing +/- 0.2 V (10%)
    Test results:
    Ia  : 6.86 (mA)              84 % of nominal 8.2 (mA)
    Ra  : 7.39 (kohm)            114 % of nominal 6.5 (kohm)        Ra = dVa/dIa
    Gm  : 4.42 (mA/V)            80 % of nominal 5.5 (mA)           Gm = dIa/dVg
    mu  : 33 (-)                 93 % of nominal 35 (-)             mu = Gm*Ra
    SECTION 2
    Test conditions:
    Va  : 150.0 (V)              Swing +/- 15.00 V (10%)
    Vg  : -2 (V)                 Swing +/- 0.2 V (10%)
    Test results:
    Ia  : 7.35 (mA)              90 % of nominal 8.2 (mA)
    Ra  : 6.91 (kohm)            106 % of nominal 6.5 (kohm)        Ra = dVa/dIa
    Gm  : 4.7 (mA/V)             85 % of nominal 5.5 (mA/V)         Gm = dIa/dVg
    mu  : 33 (-)                 93 % of nominal 35 (-)             mu = Gm*Ra
    We guarantee and test all our vacuum tubes based on the manufacturers tube Manual specifications using
    uTracer3+ curve tracer & Tube tester, regulated DC and AC power sources, benchtop and
    handheld multimeters for accurate precise repeatable measurements.
    I love my TV-7B, Hickok 800, 6000A, EICO 667, and my B&K 700. But these are just tube testers
    and not true parametric testing equipment. They are for "Go - No Go" testing and are best for weeding out bad
    and weak tubes.
    Truthfully, the best way to know how a tube will work is to use it in the actual application. The
    next best thing is to test it at the manufacturers parameters in the tube manual with proper lab or
    bench testing. This way one knows how close the tube is to it's designed standards. This may seem
    excessive, but we try to offer the tube amp builder/technician, audiophile and musician the best service and
    product we can. More tubes to come.
    Shipping
    The tube/s will be packaged in original box (if applicable) and then sent out in a 6x4x4 shipping box. We use USPS or FedEX shipping services. Please contact us for special shipping needs.
    Ask any questions are concerns you have prior to purchasing so your transaction can be fast and accurate!