开云体育

Here's an update with one added transistor. Someone suggested eBay for the 2SC5551. I found two Chinese sellers and ordered a set of 5 from each; one of them came today and I tested it. To start with it's obviously a fake as the transistor SMD package has no markings and in fact has been scraped to get rid of whatever was originally on it. So it's not a genuine 2SC5551. But it's a fairly decent transistor for use in a LZ1AQ loop amp, whatever it is, noted here in the "fake China 2SC5551" listing. Note the eBay seller for this is "Chips Gate".

Steve

	LF Noise Output	10 MHz gain, NF
2SC5551	-92 dBm	+10.55 dB, 0.93 dB NF
BFU590	-93 dBm	+10.48 dB, 1.02 dB NF
BFP196	-93/-92	+10.51 dB, 1.07 dB NF
ZTX327	-89 dBm	+10.58 dB, 1.16 dB NF
fake China 2SC5551	-89 dBm	+10.50 dB, 1.19 dB NF
BFR106	-90 dBm	+10.51 dB, 1.23 dB NF
BFG591	-91 dBm	+10.39 dB, 1.28 dB NF
PZT2222A	-87 dBm	+10.57 dB, 1.29 dB NF
MOT PN2222A "650"	-87 dBm	+10.56 dB, 1.32 dB NF
MOT PN2222A "329"	-87 dBm	+10.59 dB, 1.35 dB NF
BFQ18A	-92 dBm	+10.34 dB, 1.40 dB NF
CEN 2N5109	-88 dBm	+10.49 dB, 1.43 dB NF
MOT 2N4401 "652"	-87 dBm	+10.54 dB, 1.45 dB NF
BFQ19	-87 dBm	+10.50 dB, 1.51 dB NF
CEN 2N3866	-88 dBm	+10.45 dB, 1.57 dB NF
MOT PN2222A "820"	-85 dBm	+10.56 dB, 1.73 dB NF
2SC5706	-86 dBm	+10.13 dB, 1.85 dB NF
PN2222A "327 S-92"	-82 dBm	+10.53 dB, 2.33 dB NF
2N2222A "331" plastic	-82 dBm	+10.48 dB, 2.46 dB NF
KSP2222A "B24"	-80 dBm	+10.44 dB, 2.65 dB NF
PN2222A "H47"	-80 dBm	+10.44 dB, 2.72 dB NF
PN2222A "D22"	-81 dBm	+10.43 dB, 2.75 dB NF
BF199	-86 dBm	+10.46 dB, 2.82 dB NF
Fairchild PN2222A	-81 dBm	+10.48 dB, 2.93 dB NF
MPSH10	-88 dBm	+10.44 dB, 3.05 dB NF
NatSemi PN2222A "806"	-80 dBm	+10.50 dB, 3.12 dB NF
metal 2N2222A "D9"	-80 dBm	+10.43 dB, 3.13 dB NF
metal 2N2222A "P6"	-80 dBm	+10.48 dB, 3.47 dB NF
metal JAN2222	-79 dBm	+10.45 dB, 4.21 dB NF
PN2222A "W 72"	-72 dBm	+10.43 dB, 4.27 dB NF