RoHSCOMPLIANTMMBTA44
NPN TransistorFeatures
 Moisture sensitivity level 1
 Halogen free and RoHS compliant
 Surface mount package ideally suited forautomatic insertion
Application
 Signal amplification
 Switching circuit
Mechanical data Package： SOT-23
 Terminals：Tin plated leads, solderable
J-STD-002 and JESD22-B102

per■ Maximum Ratings (Ta=25℃ Unless otherwise specified)
Item

SymbolUnit

Conditions

Device marking code

Value
3D

Collector-base voltage

VCBOV

IC=100μA,IE=0400

Collector-emitter voltage

VCEOVIC =1mA,IB=0400

Emitter-base voltage

VEBOV

IE=10μA,IC=06

Collector current

ICmA

200

Power dissipation

PDmW

350

Junction temperature

TJ℃-55 to +150

Storage temperature

TSTG℃-55 to +150

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S-S2146
Rev.1.3,07-Nov-23

Yangzhou Yangjie Electronic Technology Co., Ltd.

www.21yangjie.com

MMBTA44■ Electrical Characteristics (Ta=25℃ Unless otherwise specified)
Item

SymbolUnitConditions

Min

Collector-base breakdown voltage

V(BR)CBOV

IC=100μA,IE=0400

Collector-emitter breakdown voltage

V(BR)CEOVIC =1mA,IB=0400

Emitter-base breakdown voltage

V(BR)EBO

VIE=10μA,IC=06

Collector-base cut-off current

ICBOnA

VCB=400V

100

Emitter-base cut-off current

IEBOnA

VEB=4V

100hFE1

VCE=10V,IC=1mA

40hFE2

VCE=10V,IC=10mA

50hFE3

VCE=10V,IC=50mA

45hFE4

VCE=10V,IC=100mA

40TypMax200

DC current gain

VCE(sat)1V

IC=10mA,IB=1mA

0.5

VCE(sat)2V

IC=50mA,IB=5mA

0.75

VBE(sat)V

IC=10mA,IB=1mA

0.75

Collector-emitter saturation voltage

Base-emitter saturation voltage■ Thermal Characteristics
Parameter

Symbol

Unit

Value

Thermal resistance, junction-to-ambientRθJ-A(1)℃/W

357

Thermal resistance, junction-to-case

RθJ-C(1)

℃/W

286

Note:
（1）Device mounted on PCB, single-sided copper，with standard footprint

2/6

S-S2146
Rev.1.3,07-Nov-23

Yangzhou Yangjie Electronic Technology Co., Ltd.

www.21yangjie.com

MMBTA44■Characteristics
Fig 1：Static Characteristics

Fig 2：DC Current Gain20

Ta=25℃
0.1mA0.08mA
0.07mA
100.06mA
0.05mA
0.04mA
0.03mA
0.02mAIb= 0.01mA

0024681012

Collect‐Emitter Voltage VCE(V)Fig 3：Collector-Emitter Saturation Voltage

Fig 4：Base-Emitter Saturation Voltage

Fig 5：Base-Emitter On Voltage

Fig 6：Cob/Cib-VCB/VEB
100CibCapacitance C(pF)

Collector Current Ic(mA)

0.09mA

fT=1MHz
Ta=25℃

10Cob

10.1

110

Reverse Voltage VR(V)Fig 7：PD-Ta Curve
3/6

S-S2146
Rev.1.3,07-Nov-23

Yangzhou Yangjie Electronic Technology Co., Ltd.

www.21yangjie.com

MMBTA44400

Power Dissipation PD(mW)

300

200

100002550

75

100125150

Ambient Tempeature Ta(℃)

4/6

S-S2146
Rev.1.3,07-Nov-23

Yangzhou Yangjie Electronic Technology Co., Ltd.

www.21yangjie.com

MMBTA44■Ordering Information

Preferred P/N

Packingcode

Unit weight(g)Minimumpackage(pcs)

Inner boxquantity(pcs)

Outer carton
quantity(pcs)

Delivery mode

MMBTA44

F2

Approximate 0.008

3000

30000

120000

7” reel

MMBTA44

F4

Approximate 0.008

10000/

210000

13” reel■ Outline Dimensions■ Suggested Pad Layout

5/6

S-S2146
Rev.1.3,07-Nov-23

Yangzhou Yangjie Electronic Technology Co., Ltd.

www.21yangjie.com

MMBTA44
Disclaimer
The information presented in this document is for reference only. Yangzhou Yangjie Electronic Technology Co., Ltd. reserves theright to make changes without notice for the specification of the products displayed herein to improve reliability, function, or design
or otherwise.
The product listed herein is designed to be used with ordinary electronic equipment or devices, and not designed to be used withequipment or devices which require high level of reliability and the malfunction of with would directly endanger human life (such as
medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety
devices), Yangjie or anyone on its behalf, assumes no responsibility or liability for any damages resulting from such improper useof sale.
This publication supersedes & replaces all information previously supplied. For additional information, please visit our website
http:// www.21yangjie.com , or consult your nearest Yangjie’s sales office for further assistance.

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S-S2146
Rev.1.3,07-Nov-23

Yangzhou Yangjie Electronic Technology Co., Ltd.

www.21yangjie.com