2SD870 Search Results

2SD870 Price and Stock

Filter by Manufacturer


JRH Electronics TW-10-12-S-D-870-120 STACKING BOARD CONNECTOR, TW SER
Distributors	Part	Package	Stock	Lead Time	Min Order Qty	Price	Buy
DigiKey	TW-10-12-S-D-870-120	Bulk			1	1 $11.55 10 $11.55 100 $11.55 1000 $11.55 10000 $11.55	Buy Now
Samtec Inc TW-10-12-S-D-870-120 CONN BRD STACK 2.00 20POS Free Sample
Distributors	Part	Package	Stock	Lead Time	Min Order Qty	Price	Buy
DigiKey	TW-10-12-S-D-870-120	Bulk			1	1 $6.35 10 $6.35 100 $6.35 1000 $6.35 10000 $6.35	Buy Now
Avnet Americas	TW-10-12-S-D-870-120	Bulk		1 Weeks	1	1 $5.53 10 $5.53 100 $4.32 1000 $3.76 10000 $3.76	Buy Now
Mouser Electronics	TW-10-12-S-D-870-120					1 $5.53 10 $5.53 100 $4.32 1000 $3.03 10000 $2.2	Get Quote
Newark	TW-10-12-S-D-870-120	Bulk			1	1 $6.91 10 $6.63 100 $5.47 1000 $4.04 10000 $3.84	Buy Now
Master Electronics	TW-10-12-S-D-870-120					1 - 10 $7.29 100 $5.66 1000 $3.45 10000 $1.73	Buy Now

Sager	TW-10-12-S-D-870-120		169		1	1 $5.53 10 $5.53 100 $4.32 1000 $3.03 10000 $3.03	Buy Now
JRH Electronics TW-12-12-S-D-870-090 CONN BRD STACK 2.00 24POS
Distributors	Part	Package	Stock	Lead Time	Min Order Qty	Price	Buy
DigiKey	TW-12-12-S-D-870-090	Bulk			1	1 $13.16 10 $12.182 100 $8.2727 1000 $8.2727 10000 $8.2727	Buy Now
Samtec Inc TW-12-12-S-D-870-090 CONN BRD STACK 2.00 24POS Free Sample
Distributors	Part	Package	Stock	Lead Time	Min Order Qty	Price	Buy
DigiKey	TW-12-12-S-D-870-090	Bulk			1	1 $7.24 10 $7.24 100 $7.24 1000 $7.24 10000 $7.24	Buy Now
Avnet Americas	TW-12-12-S-D-870-090	Bulk			1	1 $6.3 10 $6.03 100 $4.51 1000 $4.51 10000 $4.51	Buy Now
Mouser Electronics	TW-12-12-S-D-870-090					1 $6.3 10 $6.03 100 $4.51 1000 $2.64 10000 $2.03	Get Quote
Newark	TW-12-12-S-D-870-090	Bulk			1	1 $8.29 10 $7.95 100 $6.56 1000 $4.84 10000 $4.6	Buy Now
Master Electronics	TW-12-12-S-D-870-090					1 - 10 $8.75 100 $5.09 1000 $3.25 10000 $2.13	Buy Now

Sager	TW-12-12-S-D-870-090		145		1	1 $6.3 10 $6.03 100 $4.51 1000 $3.63 10000 $3.63	Buy Now
Samtec Inc TW-32-12-S-D-870-125 CONN BRD STACK 2.00 64POS Free Sample
Distributors	Part	Package	Stock	Lead Time	Min Order Qty	Price	Buy
DigiKey	TW-32-12-S-D-870-125	Bulk			1	1 $18.3 10 $18.3 100 $18.3 1000 $18.3 10000 $18.3	Buy Now
Avnet Americas	TW-32-12-S-D-870-125	Bulk			1	1 $15.92 10 $15.59 100 $12.02 1000 $12.02 10000 $12.02	Buy Now
Mouser Electronics	TW-32-12-S-D-870-125					1 $15.92 10 $15.59 100 $12.02 1000 $5.41 10000 $5.41	Get Quote
Newark	TW-32-12-S-D-870-125	Bulk			1	1 $17.03 10 $15.41 100 $13.34 1000 $12.26 10000 $12.26	Buy Now
Master Electronics	TW-32-12-S-D-870-125					1 $20.91 10 $18.66 100 $13 1000 $8.44 10000 $8.44	Buy Now

Sager	TW-32-12-S-D-870-125		46		1	1 $15.92 10 $15.59 100 $12.02 1000 $9.69 10000 $9.69	Buy Now

Find more 2SD870 price and stock on Findchips.com

2SD870 Datasheets (18)

Part	Manufacturer	Description	Datasheet Type	PDF
2SD870	Various Russian Datasheets	Transistor	Original	PDF
2SD870	Wing Shing Computer Components	SILICON DIFFUSED POWER TRANSISTOR(GENERAL DESCRIPTION)	Original	PDF
2SD870	Continental Device India	Semiconductor Device Data Book 1996	Scan	PDF
2SD870	Continental Device India	TO-3 Power Package Transistors	Scan	PDF
2SD870	Mospec	5 AMPERE POWER TRANSISTOR 1500 VOLTS 50 WATTS	Scan	PDF
2SD870	Mospec	POWER TRANSISTORS(5A,1500V,50W)	Scan	PDF
2SD870	Unknown	Shortform Transistor PDF Datasheet	Short Form	PDF
2SD870	Unknown	Japanese Transistor Cross References (2S)	Scan	PDF
2SD870	Unknown	Cross Reference Datasheet	Scan	PDF
2SD870	Unknown	Catalog Scans - Shortform Datasheet	Scan	PDF
2SD870	Unknown	Semiconductor Master Cross Reference Guide	Scan	PDF
2SD870	Unknown	The Transistor Manual (Japanese) 1993	Scan	PDF
2SD870	Unknown		Scan	PDF
2SD870	Unknown	Transistor Substitution Data Book 1993	Scan	PDF

2SD870	Unknown	The Japanese Transistor Manual 1981	Scan	PDF
2SD870	Unknown	Shortform Data and Cross References (Misc Datasheets)	Short Form	PDF
2SD870	Semico	High Voltage Video Amplifiers / Television and Video Devices	Scan	PDF
2SD870	Toshiba	Integrated Circuits for TV Systems	Scan	PDF

2SD870 Datasheets Context Search

Catalog Datasheet	MFG & Type	PDF	Document Tags
2SD870 Abstract: No abstract text available Text: SavantIC Semiconductor Product Specification 2SD870 Silicon NPN Power Transistors DESCRIPTION •With TO-3 package ·Built-in damper diode ·High voltage ,high speed ·Low collector saturation voltage APPLICATIONS ·For color TV horizontal output applications	Original	PDF	2SD870 2SD870
2SD870 Abstract: 2sd870 transistor transistor 2sd870 Text: SILICON DIFFUSED POWER TRANSISTOR 2SD870 GENERAL DESCRIPTION Highvoltage,high-speed switching npn transistors in a metal envelope with integrated efficiency diode,primarily for use in horizontal deflection circuites of colour television receivers TO-3 QUICK REFERENCE DATA	Original	PDF	2SD870 16KHz 100mA 2SD870 2sd870 transistor transistor 2sd870
sn76131 Abstract: tlo72cp TOSHIBA 2N3055 M53207P 2N3055 TOSHIBA KIA7313AP kia7640ap LA5530 M5L8155P TBB1458B Text: ACTIVE ELECTRONICS COMPONENTS CROSS REFERENCE GUIDE 2SC429GTM 2SC458 2SC458LG 2SC503 2SC504 2SC510 2SC512 2SC519 2SC520A 2SC594 2SC699A 2SC780 2SC809-1 2SC945 2SC3012 2SC3074 2SC3114 2SC3115 2SC3116 2SC3117 2SC3134 2SC3135 2SC3138 2SC3143 2SC3144 2SC3145 2SC3157	Original	PDF	2SC429GTM 2SC458 2SC458LG 2SC503 2SC504 2SC510 2SC512 2SC519 2SC520A 2SC594 sn76131 tlo72cp TOSHIBA 2N3055 M53207P 2N3055 TOSHIBA KIA7313AP kia7640ap LA5530 M5L8155P TBB1458B
BC548 TRANSISTOR REPLACEMENT Abstract: TYN612 pin diagram 1n4007 smd, toshiba S0817MH TYN604 scr pin diagram kmz51 compass TRANSISTOR S1A 64 smd toshiba l 300 laptop motherboard circuit diagram JFET TRANSISTOR REPLACEMENT GUIDE j201 replacements for transistor NEC D 587 Text: 5.2 5.4 5.46 5.124 5.130 5.130 5.140 5.180 Introduction Diodes & Rectifiers Transistors Triacs,Thyristors and Diacs Sensors Cross Reference General Application discretes Cross Reference Power discretes Cross Reference RF discretes Discrete Components 5.1 Introduction	Original	PDF	BAP1321-02 BAP65-05 BAP65-03 BAP65-05W BAP65-02 BAP63-03 BAP63-02 BAP64-03 BAP64-02 BB143 BC548 TRANSISTOR REPLACEMENT TYN612 pin diagram 1n4007 smd, toshiba S0817MH TYN604 scr pin diagram kmz51 compass TRANSISTOR S1A 64 smd toshiba l 300 laptop motherboard circuit diagram JFET TRANSISTOR REPLACEMENT GUIDE j201 replacements for transistor NEC D 587
k2645 Abstract: k4005 U664B mosfet k4005 MB8719 transistor mosfet k4004 SN16880N stk5392 STR451 BC417 Text: 1 BHIAB Electronics Du som söker besvärliga IC & transistorer, börja Ditt sökande hos oss – vi har fler typer på lager än man rimlingen kan begära av ett företag Denna utgåva visar lagerartiklar men tyvärr saknas priser och viss information Men uppdatering sker kontinuerligt	Original	PDF	MK135 MK136 MK137 MK138 MK139 MK140 Mk142 MK145 MK155 157kr k2645 k4005 U664B mosfet k4005 MB8719 transistor mosfet k4004 SN16880N stk5392 STR451 BC417
BUV48I Abstract: BU808DXI BD699 buv18a BD241CFI transistor 2SA1046 BUW52I BU808DFI equivalent BU724AS 2SA1046 Text: BIPOLAR TRANSISTOR INTRODUCTION TO BIPOLAR CROSS REFERENCE In order to improve our overall service, SGS-THOMSON has introduced a system of preferred transistor sales types. The following cross-reference is intended as a guide to identify sales types that may be suitable	Original	PDF	2N3016 2N3021 2N3022 2N3023 2N3024 2N3025 2N3026 2N3055 2N3076 2N3171 BUV48I BU808DXI BD699 buv18a BD241CFI transistor 2SA1046 BUW52I BU808DFI equivalent BU724AS 2SA1046
STK411-230E Abstract: STK411-220E stk442-130 UPC2581V PAL005A FN1016 STRG6153 RSN313H25 STK407-070B MCZ3001D Text: R Serving The Electronic Industry Since 1982 Ordering at Dalbani is so easy Go to : www.dalbani.com Search & check stock Busque y revise nuestro inventario A Search Enter your Item number and click GO Entre el numero del producto y haga clicsobre GO The system will take you straight to the Item that you are looking for	Original	PDF	STVDST-01 CAT22 STK411-230E STK411-220E stk442-130 UPC2581V PAL005A FN1016 STRG6153 RSN313H25 STK407-070B MCZ3001D
2SC4288A Abstract: c5411 c5411 transistor 2Sc5858 equivalent MA 8910 2SD2499 equivalent 2SC5446 equivalent 2sc5858 2SD2539 equivalent TV horizontal Deflection Systems Text: 2003-9 PRODUCT GUIDE BCE0015A Horizontal-Deflection Output Transistors 2003 http://www.semicon.toshiba.co.jp/eng 1 Outline Toshiba has developed a range of fifth-generation horizontal-deflection-output transistors HV-Trs . Radical redesign of the emitter electrode and the contact pattern has yielded significant improvements, resulting in higher current density	Original	PDF	BCE0015A 3531C-0103 F-93561, 2SC4288A c5411 c5411 transistor 2Sc5858 equivalent MA 8910 2SD2499 equivalent 2SC5446 equivalent 2sc5858 2SD2539 equivalent TV horizontal Deflection Systems
c5411 Abstract: c5411 transistor S2000N equivalent 2SC5570 equivalent S2055N equivalent 2SD1555 equivalent c5411 equivalent S2055AF equivalent 2SD2539 equivalent 2SD2499 equivalent Text: Horizontal-Deflection Output Transistors PRODUCT GUIDE Outline Toshiba has developed a range of fifth-generation horizontal-deflection-output transistors HV-Trs . Radical redesign of the emitter electrode and the contact pattern has yielded significant improvements, resulting in higher current density	Original	PDF
Untitled Abstract: No abstract text available Text: Products Search Home About Us Product News Application Message to Us Contact Us Corp.News \| Industry News Products Category You are Here : >Home>Product Showcase > Transistors/IC Products Show Diode Bridge Superfast Diode Ultrafast Diode FRD Diode STD Diode	Original	PDF	SC-56 Bu208A Bu208D 2-16D3A Bu508A SC-650 Bu508D Bu508AF Bu508DF
2sd870 transistor Abstract: 2sd870 Text: CDU 2SD870 2SD870 NPN POWER TRANSISTOR Built-in Damper Diode Colour TV Horizontal Output Applications DIM A B C D E F G H J K L M MIN MAX 39,37 22,22 8,50 6,35 1.09 0,96 1,77 29,90 30,4 10,69 11,18 5,72 5,20 16,64 17,15 11,15 12,25 26,67 3,84 4,19 — ABSOLUTE MAXIMUM RATINGS	OCR Scan	PDF	2SD870 2SD870 100mA 2sd870 transistor
NEC 1357 Abstract: SD 1351 2SD1370 2SD869 TOSHIBA NEC 2SD288 2sc4329 D1351 2SD1944 2SC3252 k 1358 Text: - 238 - m % tt Type No. £ Manuf. H # SANYO It 2Ê TOSHIBA 2SD869 = ft ft 2SD1887 ^ 2SD1884 2SD820 2 S D 1342 = ft 2SD870 H ft 2SD1878 2SD 1343 ✓ 2SD1885 2SD821 2SD 1344 H ft 2SD18B5 2SD871 2SD1061 2SD553 2 S D 1340 2 S D 1341 = 2SD 1345 # 2 S D 134/ = ft	OCR Scan	PDF	2SD1340, 2SD1341, 2SD1342 2SD869 2SD820 2SD870 2SD821 2SD871 2SD553 2SD1173 NEC 1357 SD 1351 2SD1370 2SD869 TOSHIBA NEC 2SD288 2sc4329 D1351 2SD1944 2SC3252 k 1358
Untitled Abstract: No abstract text available Text: TOSHIBA { DI SCRE TE /O PT O} 9097250 TOSHIBA 5h DISCRETE/OPTO 56C DE I ^ D T T S S D 00D7Ö3G 07830 O T - 3 3 - / / 2SD870 SILICON NPN TRIPLE DIFFUSED MESA TYPE Unit in ram COLOR TV H O R I Z O N T A L OUTPUT A P P L I C A T I O N S . 085OMAX. 081.OMAX	OCR Scan	PDF	2SD870 085OMAX.
2SD870 Abstract: 2sD870 transistor 2SD870 equivalent Text: ¿ Z & M O S P E C HORIZONTAL DEFLECTION POWER TRANSISTORS .specifically designed for use in larg screen color deflection circuits. NPN 2SD870 FEATURES: * High Voltage: VCBO=1500V * Low Saturation Voltage :VCE sat =5.OV(Max.) @ lc = 4.0 A * High Speed :t, =1.0 us(Max.) @ lcp =4.0 A, IB1 = 0.8A	OCR Scan	PDF

2SD870 TOSHIBA Abstract: 2SD870 2S0870 AC42C Text: TOSHIBA { D I S C R E T E / O P T 03- 909 7250 TO SH IB A Sh 56C < D I S C R E T E /O P T O > DE p ^ 0 ^ 7 2 5 0 07830 30D7a3G D T-33»// 2SD870 S IL IC O N NPN T R IP L E D IF F U SE D M E S A TYPE Unit in mm COLOR TV HORIZONTAL OUTPUT APPLICATIONS. 085O M A X .	OCR Scan	PDF	-CDISCRETE/0PT03- Ga07a3G T-33-// 2SD870 2SD870 TOSHIBA 2SD870 2S0870 AC42C
b1375 Abstract: 2sk270a 2SK150A MG15G1AL2 2SA1051b MG50G2CL1 mg100g1al2 2SA1015 A1265N MG100G1AL1 Text: •D IS C O N TIN U E D TYPE LIST Type No. 2N3713 2N3714 2N3715 2N3716 2N3789 2N3790 2N3791 2N3792 2N4340 2N4340S 2N4391 2N4392 2N4393 2 N 4398 2N4399 2N5038 2N5039 2N5301 2N5302 2N5303 2N6249 2N6250 2N6251 2N6546 2N6547 2SA27 2SA28 2SA29 2SA37 2SA38 2SA39	OCR Scan	PDF	2N3713 2N3714 2N3715 2N3716 2N3789 2N3790 2N3791 2N3792 2N4340 2N4340S b1375 2sk270a 2SK150A MG15G1AL2 2SA1051b MG50G2CL1 mg100g1al2 2SA1015 A1265N MG100G1AL1
2SK 150A Abstract: mg100g1al2 2SD1365 2SC2461 B 2sk30 2SC102 C366G b1375 MG15G1AL2 1265N Text: ♦D ISC O N TIN U E D TYPE LIST T y p e No. 2N3713 R ecom m end R e p la c e m e n t T y p e N o. - 2N3714 T y p e N o. R ecom m end R e p la c e m e n t T y p e N o. T y p e No. R ecom m end R e p la c e m e n t T y p e N o. 2SA52 2SA1015 2SA282 2SA1015	OCR Scan	PDF	2N3713 2N3714 2N3715 2N3716 2N3789 2N3790 2N3791 2N3792 2N4340 2N4340S 2SK 150A mg100g1al2 2SD1365 2SC2461 B 2sk30 2SC102 C366G b1375 MG15G1AL2 1265N
Transistor 2SA 2SB 2SC 2SD Abstract: S-AU27M S2000A inverter P4005 S-AV21H S-AU27 3182N 2sb 834 transistor Transistor 2SC4288A Drive IC 2SC3346 Text: TO-126 IS , PO W ER MOLD PACKAGE TRANSISTOR SELECTION GUIDE • TO-126 (IS) ▲ PW MOLD Darlington A PW MOLD • POWER MOLD TO-126 (IS) Darlington TO-126 OS) H A T0-220AB, TO-220 (IS) PACKAGE TRANSISTOR S E L ECTION G UIDE r— " ~ '''- Y C E O ( V ) lc (A)	OCR Scan	PDF	O-126 O-126 T0-220AB, O-220 2SC4544 2SC4448 2SC3612 2BC4201 Transistor 2SA 2SB 2SC 2SD S-AU27M S2000A inverter P4005 S-AV21H S-AU27 3182N 2sb 834 transistor Transistor 2SC4288A Drive IC 2SC3346
NEC k 3654 Abstract: 2SC3536 DTC124ES Hitachi 3640 DTC114ES 2SC 3674 S 2SC3738 2sc3242a 2SC3535 DTC144ES Text: - m € T y p e No. £ Manuf. 2SC 3 6 4 0 iE. 2SC 3 6 4 1 H 2SC 3 6 4 2 ^ & H # SANYO TOSHIBA S NEC 2SC3643 2SC3536 2SC3644 2SC3536 tL HITACHI * ± i1 FUJITSU tfi T MATSUSHITA # 2SC3535 2SC3737 H. n 2SC3536 2SC3738 2SC 3 6 4 4 J H n 2SC3536 & 2SC2880 2SC 3 6 4 6	OCR Scan	PDF	2SC3643 2SC3536 2SC3644 2SC3535 2SC3737 2SC3738 NEC k 3654 2SC3536 DTC124ES Hitachi 3640 DTC114ES 2SC 3674 S 2SC3738 2sc3242a 2SC3535 DTC144ES
2SD915 Abstract: 2SD877 2SD889 2SD870 2SD878 2SD873 2SD866 2SD866A 2SD867 2SD868 Text: - 228 - m n Ta=25cC, EP(ÏTc=25‘ C 32 2SD866 & ír £ föT ffl & PSW VcBO VcEO ICCDC) Pc Pc (V) (V) (A) (W) (W) 130 80 7 i.CBO. (max) (/¿A) 40 . HF VcB (V) 10 100 (min) 60 M (max) 260 te Vc e (V) (Ta=25C) (max) (V) Ic / I e (A) 2 [EPfätyp<S] (V)	OCR Scan	PDF	2SD866 2SD866A 2SD867 2SD868 2SD869 2SD870 2SD871 2SD886A T0-220F 2SD888 2SD915 2SD877 2SD889 2SD870 2SD878 2SD873 2SD867
70H40 Abstract: transistor equivalent d2012 2SC734 equivalent 3sk73 equivalent 2sb502 2sa776 bl 2sc2075 equivalent 2sk For Low Noise Audio Amplifier Applications 2sa970 BL equivalent 2sa776 gr Text: AUDIO SMALL SIGNAL AMP Package USM Super M ini M ini T O -9 2 A p p lic a tio n • * « m • 2SA1162 2SA1163 General purpose 2SC1815 2SA1015 2SC2458 2SC2459 2SA1048 2SA1049 2SC2712 2SC2713 General purpose L o w Noise 2SC1815 2SA1015© 2SC2458© 2SA2048©	OCR Scan	PDF	2SA1162 2SA1163 2SC1815 2SA1015 2SC2458 2SC2459 2SA1048 2SA1049 2SC2712 2SC2713 70H40 transistor equivalent d2012 2SC734 equivalent 3sk73 equivalent 2sb502 2sa776 bl 2sc2075 equivalent 2sk For Low Noise Audio Amplifier Applications 2sa970 BL equivalent 2sa776 gr
BU2080 Abstract: No abstract text available Text: TO-3 Power Package Transistors NPN Electrical Characteristics (Ta=25'C, Unless Otherwise Specified) Maximum Ratings Type No. V CBO V C E0 (V) Min (V) Min 1500 800 2SD1168P Pd 'c VebO (W) (A) (V) Min 0Tc=25°c 5 50 !cbo (PA) Max V CB @ (V) hpE 1000 1500 9	OCR Scan	PDF	2SD1168P 2SD1168Q 2SD200 2SD83 BU326 BU326A BU608 CDN055 BU2080
BU208D Abstract: BU208 BU208A 2SD870 BDY38 BOY20 BU2080 2SC1942 2SD1168 2SD1168P Text: TO-3 Power Package Transistors NPN Maximum Ratings Type No. V CBO VCEO V EBO (V) (V) (V) Min Min Min Electrical Characteristics (Ta=25°C, Unless Otherwise Specified) •c Po (W) (A) To=25°c ICBO V CB •c e s V CE (MA) Max 0 (V) (MA) Max (V) 10 e	OCR Scan	PDF	2SC1942 2SD1168 2SD1168P 2SD1168Q 2SD200 2SD869 2SD870 BU204 BU205 BU207 BU208D BU208 BU208A BDY38 BOY20 BU2080
2SC2801 Abstract: 2SD947 2SD549 2SD685 2SD728 2SD1878 2SD869 TOSHIBA 2SC1645 2sd1111 2SD727 Text: - 226 - m « Type No. * * *t € Manuf. m h SANYO 2SD 891 / fé T 2SD1111 2SD 892 fé T 2SD1U1 2SD 893 fé 2SD1153 T M. TOSHIBA B S NEC 31 HITACHI œ f I FUJITSU fé T MATSUSHITA 2SD892 H ft 2SD549 h ft 2SD716 2SD727 2SD 896 ^ H ft 2SD718 2SD728 2SD 897 S	OCR Scan	PDF	2SD891 2SD892 2SD1111 2SD1153 2SC1645 2SC1645 2SD985 2SD549 2SD716 2SC2801 2SD947 2SD685 2SD728 2SD1878 2SD869 TOSHIBA 2SD727

2SD870 Search Results

2SD870 Price and Stock

JRH Electronics TW-10-12-S-D-870-120

Samtec Inc TW-10-12-S-D-870-120

JRH Electronics TW-12-12-S-D-870-090

Samtec Inc TW-12-12-S-D-870-090

Samtec Inc TW-32-12-S-D-870-125

2SD870 Datasheets (18)

2SD870 Datasheets Context Search

2SD870

2SD870

sn76131

BC548 TRANSISTOR REPLACEMENT

k2645

BUV48I

STK411-230E

2SC4288A

c5411

Untitled

2sd870 transistor

NEC 1357

Untitled

2SD870

2SD870 TOSHIBA

b1375

2SK 150A

Transistor 2SA 2SB 2SC 2SD

NEC k 3654

2SD915

70H40

BU2080

BU208D

2SC2801