PNPs on Curve Tracer: ZTX553 , ZTX753 , KSA1013Y , KSA992*FB* , CDIL(India) BC560C , MJE15031G

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I just received a batch of the soon-to-be-discontinued KSA992 with FB suffix (430<Beta<600), and also a batch of BC560C's built by CDIL in India. OnSemi/Fairchild has discontinued these; maybe CDIL might be an acceptable second source (?) I put these on the curve tester, along with four other PNPs as listed in the title above. They came in the same shipping box.

My LockyZ curve tracer can only plot in the first quadrant, so these graphs of PNP transistors have |Vce| on the horizontal axis and |Ice| on the vertical axis. I swept only one Ibe, which gave approximately 8 milliamps (oops: |8 mA| !!) of collector current. If you feel ambitious you can extract the Early Voltage VA from the slope of the curve and a little algebra of affine functions. Maybe you'll discover that your circuit simulation .model gives a very different Early Voltage than measured data from real devices.

Hoping these may be useful to somebody!

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  • KSA992FB_pnp.PNG
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  • BC560Ccdil_pnp.PNG
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  • ZTX553_pnp.PNG
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  • ZTX753_pnp.PNG
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  • KSA1013YBU_tall.PNG
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  • MJE15031G_pnp.PNG
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And here are plots of Beta (Ic/Ib) versus collector current, on the same devices, measured at 5 volts from collector to emitter.

A few of the datapoints show Beta > 600. Woo baby.

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  • BETA_KSA1013YBU.PNG
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  • BETA_ZTX753.PNG
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  • BETA_ZTX553.PNG
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  • BETA_BC560Ccdil.PNG
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  • BETA_KSA992FB.PNG
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  • BETA_MJE15031G.PNG
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