BC856; BC857; BC858

General description

PNP transistor in a SOT23 plastic package.
NPN complements: BC846, BC847 and BC848.

Features

Low current (max. 100 mA)
Low voltage (max. 65 V).

Products/packages

Type number	Orderable part number	Ordering code (12NC)	Product status	Package	Packing	Marking
BC856	BC856,215	9335 897 10215	Volume production	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC856A	BC856A,215	9335 897 20215	Volume production	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC856B	BC856B,215	9335 897 30215	Volume production	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC856B	BC856B,235	9335 897 30235	Volume production	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC857	BC857,215	9335 897 40215	Volume production	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC857	BC857,235	9335 897 40235	Volume production	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC857A	BC857A,215	9335 897 50215	Volume production	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC857B	BC857B,215	9335 897 60215	Volume production	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC857B	BC857B,235	9335 897 60235	Volume production	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC857C	BC857C,215	9337 699 00215	Volume production	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC857C	BC857C,235	9337 699 00235	Volume production	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC858B	BC858B,215	9335 897 90215	Volume production	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC858B	BC858B,235	9335 897 90235	Volume production	SOT23 (TO-236AB)	Tape reel smd	Standard Marking

The variants in the table below are discontinued. See the table Discontinued information for more information.

Type number	Orderable part number	Ordering code (12NC)	Product status	Package	Packing	Marking
BC856A/A2	BC856A/A2,215	9340 629 72215	Discontinued Replacement product	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC856B/A2	BC856B/A2,215	9340 629 73215	Discontinued Replacement product	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC857/A2	BC857/A2,215	9340 629 74215	Discontinued Replacement product	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC857C/A2	BC857C/A2,215	9340 629 76215	Discontinued Replacement product	SOT23 (TO-236AB)	Tape reel smd	Standard Marking
BC858B/A2	BC858B/A2,235	9340 629 77235	Discontinued Replacement product	SOT23 (TO-236AB)	Tape reel smd	Standard Marking

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Quality/reliability/chemical content

Type number	Orderable part number	Chemical content	Leadfree Conversion date
BC856	BC856,215	BC856	week 34, 2003
BC856A	BC856A,215	BC856A	week 34, 2003
BC856B	BC856B,215	BC856B	week 34, 2003
BC856B	BC856B,235	BC856B	week 34, 2003
BC857	BC857,215	BC857	week 34, 2003
BC857	BC857,235	BC857	week 34, 2003
BC857A	BC857A,215	BC857A	week 34, 2003
BC857B	BC857B,215	BC857B	week 34, 2003
BC857B	BC857B,235	BC857B	week 34, 2003
BC857C	BC857C,215	BC857C	week 34, 2003
BC857C	BC857C,235	BC857C	week 34, 2003
BC858B	BC858B,215	BC858B	week 34, 2003
BC858B	BC858B,235	BC858B	week 34, 2003

The variants in the table below are discontinued. See the table Discontinued information for more information.

Type number	Orderable part number	Chemical content	Leadfree Conversion date
BC856A/A2	BC856A/A2,215	BC856A_A2	Always Pb-free
BC856B/A2	BC856B/A2,215	BC856B_A2	Always Pb-free
BC857/A2	BC857/A2,215	BC857_A2	Always Pb-free
BC857C/A2	BC857C/A2,215	BC857C_A2	Always Pb-free
BC858B/A2	BC858B/A2,235	BC858B_A2	Always Pb-free

Quality and reliability disclaimer

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Pricing/ordering/availability

Type number	Ordering code(12NC)	Orderable part number	Indicative price/unit($)	Region	Distributor	In stock	Order quantity	Inventory date	Buy online	Samples
BC856	9335 897 10215	BC856,215	0.0300	NA	MOUSER ELECTRONICS	26,255		11/20/2009	Buy online	Order samples
				NA	NEWARK	5,097		11/20/2009	Buy online
				NA	ARROW ELECTRONICS	3,000		11/19/2009	Buy online
				NA	DIGI-KEY CORPORATION	27,000		11/20/2009	Buy online
				NA	MOUSER ELECTRONICS	26,255		11/20/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	27,000		11/19/2009	Buy online
				ASIA	WPI	24,000	3000	11/19/2009	Buy online
BC856A	9335 897 20215	BC856A,215	0.0300	NA	MOUSER ELECTRONICS	10,319		11/20/2009	Buy online	Order samples
				NA	DIGI-KEY CORPORATION	11,993		11/20/2009	Buy online
				NA	MOUSER ELECTRONICS	10,319		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	44,890		11/19/2009	Buy online
				ASIA	SACL - Hong Kong/China	yes	15000	11/20/2009	Buy online
BC856B	9335 897 30215	BC856B,215	0.0300	NA	MOUSER ELECTRONICS	25,253		11/20/2009	Buy online	Order samples
				NA	NEWARK	1,537		11/20/2009	Buy online
				NA	DIGI-KEY CORPORATION	20,131		11/20/2009	Buy online
				NA	MOUSER ELECTRONICS	25,253		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	265,729		11/19/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	54,000		11/19/2009	Buy online
				ASIA	SACL - Hong Kong/China	yes	15000	11/20/2009	Buy online
				ASIA	WPI	30,000	3000	11/19/2009	Buy online
BC856B	9335 897 30235	BC856B,235	0.0300	NA	NEWARK	1,537		11/20/2009	Buy online	not available
BC857	9335 897 40215	BC857,215	0.0300	NA	MOUSER ELECTRONICS	36,000		11/20/2009	Buy online	not available
				NA	NEWARK	1,160		11/20/2009	Buy online
				NA	ARROW ELECTRONICS	6,000		11/19/2009	Buy online
				NA	MOUSER ELECTRONICS	36,000		11/20/2009	Buy online
				ASIA	SAC - Taiwan	yes	3000	11/20/2009	Buy online
				ASIA	WPI	30,000	3000	11/19/2009	Buy online
BC857	9335 897 40235	BC857,235	0.0300	NA	MOUSER ELECTRONICS	19,209		11/20/2009	Buy online	not available
				NA	NEWARK	1,160		11/20/2009	Buy online
				NA	MOUSER ELECTRONICS	19,209		11/20/2009	Buy online
BC857A	9335 897 50215	BC857A,215	0.0300	NA	MOUSER ELECTRONICS	11,918		11/20/2009	Buy online	Order samples
				NA	NEWARK	5,869		11/20/2009	Buy online
				NA	ARROW ELECTRONICS	3,000		11/19/2009	Buy online
				NA	MOUSER ELECTRONICS	11,918		11/20/2009	Buy online
				ASIA	SAC - Taiwan	yes	3000	11/20/2009	Buy online
				ASIA	SACL - Hong Kong/China	yes	15000	11/20/2009	Buy online
BC857B	9335 897 60215	BC857B,215	0.0300	NA	NEWARK	1,285		11/20/2009	Buy online	Order samples
				NA	DIGI-KEY CORPORATION	62		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	152,500		11/19/2009	Buy online
				ASIA	SAC - Taiwan	yes	3000	11/20/2009	Buy online
				ASIA	SACL - Hong Kong/China	yes	15000	11/20/2009	Buy online
				ASIA	WPI	3,000	3000	11/19/2009	Buy online
BC857B	9335 897 60235	BC857B,235	0.0300	NA	NEWARK	1,285		11/20/2009	Buy online	not available
BC857C	9337 699 00215	BC857C,215	0.0300	NA	MOUSER ELECTRONICS	32,746		11/20/2009	Buy online	Order samples
				NA	NEWARK	9,898		11/20/2009	Buy online
				NA	DIGI-KEY CORPORATION	2,230		11/20/2009	Buy online
				NA	MOUSER ELECTRONICS	32,746		11/20/2009	Buy online
				NA	FUTURE ELECTRONICS	116,410		11/19/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	9,000		11/19/2009	Buy online
				ASIA	SACL - Hong Kong/China	yes	15000	11/20/2009	Buy online
				ASIA	WPI	30,000	3000	11/19/2009	Buy online
BC857C	9337 699 00235	BC857C,235	0.0300	NA	NEWARK	9,898		11/20/2009	Buy online	not available
				NA	ARROW ELECTRONICS	20,000		11/19/2009	Buy online
BC858B	9335 897 90215	BC858B,215	0.0300	NA	MOUSER ELECTRONICS	8,450		11/20/2009	Buy online	Order samples
				NA	ARROW ELECTRONICS	45,000		11/19/2009	Buy online
				NA	MOUSER ELECTRONICS	8,450		11/20/2009	Buy online
				NA	AVNET ELECTRONICS MARKETING	12,000		11/19/2009	Buy online
				ASIA	SAC - Taiwan	yes	3000	11/20/2009	Buy online
				ASIA	SACL - Hong Kong/China	yes	15000	11/20/2009	Buy online
				ASIA	WPI	30,000	3000	11/19/2009	Buy online
BC858B	9335 897 90235	BC858B,235	0.0300							not available

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Discontinued information

Type number	Ordering code (12NC)	Last-time buy date	Last-time delivery date	Replacement product	DN Notice	Status	Comments
BC856A/A2	934062972215	31-dec-09	30-jun-10	$product.prunedProduct.eplacementPart	DN 64	Multi source product Standard availability	Standard End of Life.
BC856B/A2	934062973215	31-dec-09	30-jun-10	$product.prunedProduct.eplacementPart	DN 64	Multi source product Standard availability	Standard End of Life.
BC857/A2	934062974215	31-dec-09	30-jun-10	$product.prunedProduct.eplacementPart	DN 64	Multi source product Standard availability	Standard End of Life.
BC857C/A2	934062976215	31-dec-09	30-jun-10	$product.prunedProduct.eplacementPart	DN 64	Multi source product Standard availability	Standard End of Life.
BC858B/A2	934062977235	31-dec-09	30-jun-10	$product.prunedProduct.eplacementPart	DN 64	Multi source product Standard availability	Standard End of Life.

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Applications

General purpose switching and amplification.

Related applications
LCD TV flyback power supply
LCD TV resonant power supply

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Block diagrams/pinning

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Design support

Application Notes

AN10713; 18 W CFL lamp design using UBA2024 application development tool and application examples (2009-10-12)

AN97058; Improved Picture Quality Module MK7-V1 V0.9 (1997-12-11)

Support Documents

BC857A; Cad-Symbol of BC857A (2008-11-21)

LSYMTRA; Letter Symbols - Transistors General (1999-05-01)

UM10388; UBA2024AP DIP8 18 W demoboard (2009-10-09)

UM10387; UBA2024AT SO14 18 W demoboard (2009-10-09)

UM10393; UBA2024P DIP8 13 W demoboard (2009-10-08)

UM10392; UBA2024T SO14 13 W demoboard (2009-10-09)

Support Models

Spice model of BC856

Spice model of BC856A

Spice model of BC856B

Spice model of BC857

Spice model of BC857A

Spice model of BC857B

Spice model of BC857C

Spice model of BC858B

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Parametrics/similar products

Type number	Package	hFE min	hFE max	fT min(MHz)	POLARITY	I_C max(mA)	VCEO max(V)	Ptot max(mW)	Complement
BC856	SOT23 (TO-236AB)	125	475	100	PNP	100	65	250	BC846
BC856A	SOT23 (TO-236AB)	125	250	100	PNP	100	65	250	BC846A
BC856A/A2	SOT23 (TO-236AB)	125	250	100	PNP	100	65	250	BC846A
BC856B	SOT23 (TO-236AB)	220	475	100	PNP	100	65	250	BC846B
BC856B/A2	SOT23 (TO-236AB)	220	475	100	PNP	100	65	250	BC846B
BC857	SOT23 (TO-236AB)	125	800	100	PNP	100	45	250	BC847
BC857/A2	SOT23 (TO-236AB)	125	800	100	PNP	100	45	250	BC847
BC857A	SOT23 (TO-236AB)	125	250	100	PNP	100	45	250	BC847A
BC857B	SOT23 (TO-236AB)	220	475	100	PNP	100	45	250	BC847B
BC857C	SOT23 (TO-236AB)	420	800	100	PNP	100	45	250	BC847C
BC857C/A2	SOT23 (TO-236AB)	420	800	100	PNP	100	45	250	BC847C
BC858B	SOT23 (TO-236AB)	220	475	100	PNP	100	30	250	BC848B
BC858B/A2	SOT23 (TO-236AB)	220	475	100	PNP	100	30	250	BC848B

Similar products
BC856; BC857; BC858 links to the similar products page containing an overview of products that are similar in function or related to the type number(s) as listed on this page. The similar products page includes products from the same catalog tree(s), relevant selection guides and products from the same functional category.

Datasheet

BC856; BC857; BC858 - PNP general purpose transistors

General description

Features

Products/packages

Quality/reliability/chemical content

Pricing/ordering/availability

Discontinued information

Applications

Block diagrams/pinning

Design support

Parametrics/similar products

Print / Email

Disclaimers