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2N2891
Dimensions in mm (inches).
8.51 (0.34) 9.40 (0.37)
7.75 (0.305) 8.51 (0.335)
Bipolar NPN Device in a Hermetically sealed TO39 Metal Package. Bipolar NPN Device.
6.10 (0.240) 6.60 (0.260)
12.70 (0.500) min.
0.89 max. (0.035) 0.41 (0.016) 0.53 (0.021) dia.
VCEO = 80V
5.08 (0.200) typ.
IC = 2A
2.54 (0.100)
2 1
0.74 (0.029) 1.14 (0.045) 0.71 (0.028) 0.86 (0.034)
3
All Semelab hermetically sealed products can be processed in accordance with the requirements of BS, CECC and JAN, JANTX, JANTXV and JANS specifications
45
TO39 (TO205AD) PINOUTS
1 - Emitter 2 - Base 3 - Collector
Parameter VCEO* IC(CONT) hFE ft PD
Test Conditions
Min.
Typ.
Max. 80 2
Units V A Hz
@ 2/1 (VCE / IC)
50 30M
150
0.8
W
* Maximum Working Voltage This is a shortform datasheet. For a full datasheet please contact sales@semelab.co.uk.
Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in its use.
Semelab plc.
Telephone +44(0)1455 556565. Fax +44(0)1455 552612.
E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk
Generated 1-Aug-02

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Price & Availability of 2N2891

Part #	Manufacturer	Description	Price	BuyNow Qty.
N2891A 372-N2891A	Keysight Technologies	Test Probes Differential Probe - 70 MHz	1: USD4338	0

Part #	Manufacturer	Description	Price	BuyNow Qty.
2N2891	National Semiconductor Corporation			1
2N2891	Unitrode Corporation		8: USD5.6 4: USD7.28 1: USD11.2	17

Part #	Manufacturer	Description	Price	BuyNow Qty.
2N2891	Unitrode Corporation	Bipolar Junction Transistor, NPN Type, TO-5	4: USD7.5 2: USD10 1: USD15	13
2N2891	National Semiconductor Corporation	Bipolar Junction Transistor, NPN Type, TO-5	1: USD15	1
2N2891	GTCAP	Bipolar Junction Transistor, NPN Type, TO-5	7: USD12 3: USD12.6 1: USD13.5	6

Part #	Manufacturer	Description	Price	BuyNow Qty.
2N2891		INSTOCK		10

Part #	Manufacturer	Description	Price	BuyNow Qty.
2N2891	National Semiconductor Corporation	NSC 2N2891 BARE DIE		49

Part #	Manufacturer	Description	Price	BuyNow Qty.
2N2891	Fairchild Semiconductor Corporation			10
2N2891	Discrete Semiconductor Industries			49

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