2N4249: Difference between revisions

Latest revision as of 01:33, 18 February 2024

The Fairchild 2N4249 (S035928) (P/N 151-0342-00) is a PNP Si low noise amp.

Package: TO-106

NSN: 5961-00-246-2427

Semiconductors Common Design Parts Catalog 1982 (pg 189) lists the specs: 60V, 0.1A, hFE minimum 100.

Instrument	Manufacturer	Class	Model	Description	Introduced
DC501	Tektronix	Plug-in	DC501	basic 100 MHz frequency counter	1972
DC502	Tektronix	Plug-in	DC502	550 MHz frequency counter	1972
DC503	Tektronix	Plug-in	DC503	100 MHz, 7-digit frequency counter	1972
DC503A	Tektronix	Plug-in	DC503A	125 MHz, 8-digit frequency counter	1981
DC504	Tektronix	Plug-in	DC504	80 MHz, 5-digit frequency counter	1975
DC504A	Tektronix	Plug-in	DC504A	100 MHz, 6-digit frequency counter	1984
DC505	Tektronix	Plug-in	DC505	225 MHz counter/timer	1974
DC505A	Tektronix	Plug-in	DC505A	225 MHz counter/timer	1976
DC508	Tektronix	Plug-in	DC508	1 GHz counter	1978
DC508A	Tektronix	Plug-in	DC508A	1.3 GHz counter	1980
DC509	Tektronix	Plug-in	DC509	135 MHz programmable frequency counter	1981
DC510	Tektronix	Plug-in	DC510	350 MHz frequency counter	1982

@@ Line 1: / Line 1: @@
-PNP Si transistor, TO-106, Fairchild S035928
+{{Discrete component
+|Manufacturer=Fairchild
+|Model=2N4249 (S035928)
+|Part_nos=151-0342-00
+|Description=PNP Si low noise amp.
+|Used_in=DC501;DC502;DC503;DC503A;DC504;DC504A;DC505;DC505A;DC508;DC508A;DC509;DC510;
+}}
-Used in [[DC503]] as Q545 and Q548 (depending on S/N and option - pdf pg 48, AKA 7-10)
+Package: TO-106
-== Equivalents ==
+NSN: 5961-00-246-2427
-The [https://www.sphere.bc.ca/oldsite/test/tekequiv.html Sphere Tek cross-reference] indicates that 2N4249 is equivalent.
+RPR: [[Media:Tek RPR 151- Transistors.pdf|Tektronix RPR for 151- Transistors]], pg 456
-Additional searching on the internet finds various sites stating that this Tek P/N is NSN 5961-00-246-2427. Searching that number will lead to 2N4249 (same number as Sphere provides) as well as 2N4429 (note the similarity - likely a transposition). The latter is incorrect, as that is an NPN RF power transistor and not in TO-106 package.
+== Specs ==
-== Specs ==
+[[Media:Semiconductors Common Design Parts Catalog 1982.pdf|Semiconductors Common Design Parts Catalog 1982]] (pg 189) lists the specs:
-Exact specs of the 151-0342-00 are unknown. The 2N4249 is 60V, 0.1A, hFE 100-300.
+V, 0.1A, hFE minimum 100.
+== Used in ==
+{{Part usage}}