HN4A51J

Transistor for low frequency small-signal amplification 2 in 1

ALL Data sheet Application Note Other

Data sheet

HN4A51J Data sheet/Japanese[Mar,2014]PDF: 262KB

Data sheet

HN4A51J Data sheet/English[Mar,2014]PDF: 325KB

Reliability Information

Reliability Data[Sep,2024]PDF: 276KB

Environment Information

Certificate Regarding EU RoHS(2011/65/EU)Controlled Substances[Mar,2025]PDF: 86KB

Environment Information

Certificate on Content of SVHC of REACH[Mar,2025]PDF: 85KB

Application Note

Surface Mount Small Signal Transistor (BJT) Precautions for use[Jan,2022]PDF: 732KB

Application Note

Basics of Diodes (Power Losses and Thermal Design)[Aug,2021]PDF: 649KB

Application Note

Basics of Diodes (Absolute Maximum Ratings and Electrical Characteristics)[Aug,2021]PDF: 846KB

Application Note

Basics of Diodes (Types and Overview of Diodes)[Aug,2021]PDF: 1557KB

Application Note

The thermal stability and thermal design:Bipolar Transistor Application Notes[Mar,2021]PDF: 525KB

Application Note

The maximum ratings:Bipolar Transistor Application Notes[Mar,2021]PDF: 615KB

Application Note

The electrical characteristics and equivalent circuit:Bipolar Transistor Application Notes[Jan,2021]PDF: 513KB

Application Note

The terms used in data sheets:Bipolar Transistor Application Notes[Jan,2021]PDF: 546KB

Catalog

Selection Guide Small Signal 2025 Rev1.0[Feb,2025]PDF: 8498KB

Data sheet

HN4A51J Data sheet/Japanese[Mar,2014]PDF: 262KB

Data sheet

HN4A51J Data sheet/English[Mar,2014]PDF: 325KB

Application Note

Surface Mount Small Signal Transistor (BJT) Precautions for use[Jan,2022]PDF: 732KB

Application Note

Basics of Diodes (Power Losses and Thermal Design)[Aug,2021]PDF: 649KB

Application Note

Basics of Diodes (Absolute Maximum Ratings and Electrical Characteristics)[Aug,2021]PDF: 846KB

Application Note

Basics of Diodes (Types and Overview of Diodes)[Aug,2021]PDF: 1557KB

Application Note

The thermal stability and thermal design:Bipolar Transistor Application Notes[Mar,2021]PDF: 525KB

Application Note

The maximum ratings:Bipolar Transistor Application Notes[Mar,2021]PDF: 615KB

Application Note

The electrical characteristics and equivalent circuit:Bipolar Transistor Application Notes[Jan,2021]PDF: 513KB

Application Note

The terms used in data sheets:Bipolar Transistor Application Notes[Jan,2021]PDF: 546KB

Reliability Information

Reliability Data[Sep,2024]PDF: 276KB

Environment Information

Certificate Regarding EU RoHS(2011/65/EU)Controlled Substances[Mar,2025]PDF: 86KB

Environment Information

Certificate on Content of SVHC of REACH[Mar,2025]PDF: 85KB

Catalog

Selection Guide Small Signal 2025 Rev1.0[Feb,2025]PDF: 8498KB

Description

Features	Low Noise
Polarity	PNP + PNP
Internal Connection	Common base
RoHS Compatible Product(s) (#)	Available

Package Information

Toshiba Package Name	SOT-25 (SMV)
Package Image
JEITA	SC-74A
Package Code	SOT-25
Pins	5
Mounting	Surface Mount
Width×Length×Height (mm)	2.9×2.8×1.1
Package Dimensions	View
Land pattern dimensions	View
Ultra Librarian^® CAD model (Symbol, Footprint and 3D model)	Download from UltraLibrarian^® in your desired CAD format (Note1)(Note3)
SamacSys CAD model (Symbol, Footprint and 3D model)	Download from SamacSys (Note2)(Note3)

Please refer to the link destination to check the detailed size.

(Note1)	Ultra Librarian^® is a Registered trademark and CAD model library of EMA (EMA Design Automation, Inc.). CAD models (Symbol/Footprint /3D model) are provided by UltraLibrarian^®. The footprints are generated based on the specifications of Ultra Librarian^®.
(Note2)	SamacSys is a wholly owned subsidiary of Supplyframe, Inc. CAD models (Symbol/Footprint /3D model) are provided by Supplyframe, Inc. The footprints are generated based on the specifications of SamacSys.
(Note3)	Please note that the footprint dimensions may differ from the reference Land Pattern dimensions provided on our website.

Absolute Maximum Ratings

Characteristics	Symbol	Rating	Unit
Collector Current (Q1)	I_C	-0.1	A
Collector Current (Q2)	I_C	-0.1	A
Collector-emitter voltage (Q1)	V_CEO	-120	V
Collector-emitter voltage (Q2)	V_CEO	-120	V

Electrical Characteristics

Characteristics	Symbol	Condition	Value	Unit
DC Current Gain hFE (Q1) (Max)	h_FE	I_C=-0.002A V_CE=-6V	700	-
DC Current Gain hFE (Q1) (Min)	h_FE	I_C=-0.002A V_CE=-6V	200	-
DC Current Gain hFE (Q2) (Max)	h_FE	I_C=-0.002A V_CE=-6V	700	-
DC Current Gain hFE (Q2) (Min)	h_FE	I_C=-0.002A V_CE=-6V	200	-
Collector Emitter Saturation Voltage (Q1) (Max)	V_CE(sat)	I_B=-1mA I_C=-0.01A	-0.3	V
Collector Emitter Saturation Voltage (Q2) (Max)	V_CE(sat)	I_B=-1mA I_C=-0.01A	-0.3	V
Transition frequency (Q1) (Typ.)	f_T	I_C=-0.001A V_CE=-6V	100	MHz
Transition frequency (Q2) (Typ.)	f_T	I_C=-0.001A V_CE=-6V	100	MHz

Notes

The Part Number column shows representative part numbers only, which may not be available for sale in the precise form shown. Each Part Number constitutes a product family which may contain multiple associated product configurations.
(#) Under the RoHS Compatible Product(s) column, "Available" means at least one RoHS-Compatible product is available for sale in the corresponding product family. "None" means no RoHS Compatible product is available in that product family. For Toshiba's definitions of concepts related to the RoHS Directive and RoHS Compatibility, please click here.
The RoHS compatibility information provided herein is to the best of Toshiba's knowledge and belief accurate as of the date Toshiba entered the information into this database. Information is subject to change at any time without notice.
Please contact your Toshiba sales representative for detailed environmental information about each specific part number or product, such as RoHS compatibility or material content. Please use Toshiba products only in compliance with all applicable laws and regulations concerning the inclusion or use of controlled substances, including without limitation the RoHS Directive.TOSHIBA ASSUMES NO LIABILITY FOR DAMAGES OR LOSSES OCCURRING AS A RESULT OF NONCOMPLIANCE WITH APPLICABLE LAWS AND REGULATIONS.
Reliability data are provided for your reference only, please contact your Toshiba sales representative for detailed reliability information about each part number.
For product delivery, additional characters will be added to the part numbers shown on this website. For details, please ask your local distributor, or send an inquiry accessed from "Contact Us" on this website.

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HN4A51J

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