2N2944AUB – 2N2946AUB
PNP Silicon Small Signal Transistor
Available on
commercial
versions
Qualified per MIL-PRF-19500/382
Qualified Levels:
JAN, JANTX, and
JANTXV
DESCRIPTION
This 2N2944AUB through 2N2946AUB PNP silicon transistor device is military qualified up to
a JANTXV level for high-reliability applications. Microsemi also offers numerous other
products to meet higher and lower power voltage regulation applications.
Important: For the latest information, visit our website http://www.microsemi.com.
FEATURES
•
Surface mount equivalent of JEDEC registered 2N2944A thru 2N2946A series.
•
Low-profile ceramic surface mount package.
•
JAN, JANTX, and JANTXV qualification per MIL-PRF-19500/382 available.
•
RoHS compliant versions available (commercial grade only).
UB Package
APPLICATIONS / BENEFITS
•
•
Small lightweight package.
ESD to Class 3 per MIL-STD-750, method 1020.
Also available in:
TO-46 (TO-206AB)
(axial leaded)
2N2944A – 2N2946A
o
MAXIMUM RATINGS @ +25 C unless otherwise noted.
Parameters/Test Conditions
Junction and Storage Temperature
(2)
Thermal Resistance Junction-to-Ambient
Thermal Resistance surface mount Junction to Solder
Point
Collector Current (dc)
Emitter to Base voltage (static),
2N2944AUB
collector open
2N2945AUB
2N2946AUB
Collector to Base voltage (static),
2N2944AUB
emitter open
2N2945AUB
2N2946AUB
Collector to Emitter voltage (static),
2N2944AUB
base open
2N2945AUB
2N2946AUB
Emitter to Collector voltage
2N2944AUB
2N2945AUB
2N2946AUB
o
Total Power Dissipation, all terminals @ T A = +25 C
(1)
o
Total Power Dissipation, all terminals @ T SP = +25 C
Symbol
Value
T J and T STG
R ӨJA
R ӨJSP
-65 to +200
435
90
IC
V EBO
PT
-100
-15
-25
-40
-15
-25
-40
-10
-20
-35
-10
-20
-35
400
mW
PT
800
mW
V CBO
V CEO
V ECO
Unit
o
C
C/W
o
C/W
o
mA
V
V
V
V
Notes: 1. Derate linearly 2.30 mW /oC above T A = +25oC.
2. T A = +55°C for UB on printed circuit board (PCB), PCB = FR4 .0625 inch (1.59 mm) 1 - layer 1 Oz Cu,
horizontal, still air, pads (UB) = .034 inch (0.86 mm) x .048 inch (1.22 mm), R θJA with a defined thermal
resistance condition included is measured at P T = 400 mW .
T4-LDS-0236-1, Rev. 1 (111960)
©2011 Microsemi Corporation
MSC – Lawrence
6 Lake Street,
Lawrence, MA 01841
Tel: 1-800-446-1158 or
(978) 620-2600
Fax: (978) 689-0803
MSC – Ireland
Gort Road Business Park,
Ennis, Co. Clare, Ireland
Tel: +353 (0) 65 6840044
Fax: +353 (0) 65 6822298
Website:
www.microsemi.com
Page 1 of 5
2N2944AUB – 2N2946AUB
MECHANICAL and PACKAGING
•
•
•
•
•
•
CASE: Ceramic.
TERMINALS: Gold plating over nickel under-plate. RoHS compliant matte/tin available on commercial grade only.
MARKING: Part number, date code, manufacturer’s ID.
TAPE & REEL option: Standard per EIA-418D. Consult factory for quantities.
WEIGHT: < 0.04 Grams.
See Package Dimensions on last page.
PART NOMENCLATURE
JAN
2N2944A
UB
(e3)
Reliability Level
JAN = JAN Level
JANTX = JANTX Level
JANTXV = JANTXV Level
Blank = Commercial
RoHS Compliance
e3 = RoHS Compliant (available
on commercial grade only)
Blank = non-RoHS Compliant
Surface Mount package
JEDEC type number
(see Electrical Characteristics
table)
SYMBOLS & DEFINITIONS
Definition
Symbol
IB
IE
V CB
V EB
V (BR)
Base current (dc).
Emitter current (dc).
Collector to base voltage (dc).
Emitter to base voltage (dc).
Minimum Breakdown Voltage: The minimum voltage the device will exhibit at a specified current.
T4-LDS-0236-1, Rev. 1 (111960)
©2011 Microsemi Corporation
Page 2 of 5
2N2944AUB – 2N2946AUB
o
ELECTRICAL CHARACTERISTICS @ 25 C unless otherwise noted.
Characteristic
Symbol
Min.
Max.
Unit
OFF CHARACTERISTICS:
Collector-Emitter Breakdown Voltage
IC = -10 µA
2N2944AUB
2N2945AUB
2N2946AUB
V(BR)CEO
-10
-20
-35
V
2N2944AUB
2N2945AUB
2N2946AUB
V(BR)ECO
-10
-20
-35
V
Collector-Base Cutoff Current
VCB = -15 V
VCB = -25 V
VCB = -40 V
2N2944AUB
2N2945AUB
2N2946AUB
I CBO
10
10
10
µA
Emitter-Base Cutoff Current
VEB = -12 V
VEB = -20 V
VEB = -32 V
2N2944AUB
2N2945AUB
2N2946AUB
I EBO
Emitter-Collector Breakdown Voltage
IE = -10 µA, I B = 0
-0.1
-0.2
-0.5
ηA
VEC(ofs)
-0.3
-0.5
-0.8
-0.6
-1.0
-2.0
-1.0
-1.6
-2.5
mV
2N2944AUB
2N2945AUB
2N2946AUB
2N2944AUB
2N2945AUB
2N2946AUB
rec(on)
10
12
14
4.0
6.0
8.0
2N2944AUB
2N2945AUB
2N2946AUB
|hfe|
ON CHARACTERISTICS: (1)
Forward-Current Transfer Ratio
IC = -1.0 mA, VCE = -0.5 V
2N2944AUB
2N2945AUB
2N2946AUB
Forward-Current Transfer Ratio (inverted connection)
2N2944AUB
IE = -200 µA, VEC = -0.5 V
2N2945AUB
2N2946AUB
Emitter-Collector Offset Voltage
IB = -200 µA, IE = 0
2N2944AUB
2N2945AUB
2N2946AUB
2N2944AUB
IB = -1.0 mA, IE = 0
2N2945AUB
2N2946AUB
2N2944AUB
IB = -2.0 mA, IE = 0
2N2945AUB
2N2946AUB
hFE
100
70
50
hFE(inv)
50
30
20
DYNAMIC CHARACTERISTICS:
Emitter-Collector On-State Resistance
IB = -100 µA, IE = 0, Ie = 100 µA ac (rms)
f = 1.0 kHz
IB = -1.0 mA, IE = 0, Ie = 100 µA ac (rms)
f =1.0 kHz
Magnitude of Small-Signal Forward
Current Transfer Ratio
IC = -1.0 mA, VCE = -6.0V, f = 1.0 MHz
Output Capacitance
VCB = -6.0 V, IE = 0, 100 kHz ≤ f ≤ 1.0 MHz
Input Capacitance
VEB = -6.0 V, IC = 0, 100 kHz ≤ f ≤ 1.0 MHz
15
10
5.0
Ω
55
55
55
Cobo
10
pF
Cibo
6.0
pF
(1) Pulse Test: Pulse Width = 300 s, duty cycle 2.0%.
T4-LDS-0236-1, Rev. 1 (111960)
©2011 Microsemi Corporation
Page 3 of 5
2N2944AUB – 2N2946AUB
Maximum DC Operation Rating (mW )
GRAPHS
o
T A ( C) Ambient Temperature
Maximum DC Operation Rating (mW )
FIGURE 1 – Temperature-Power Derating Curve (R ӨJA )
o
T SP ( C) Solder Pad Temperature
FIGURE 2 – Temperature-Power Derating Curve (R ӨJSP )
T4-LDS-0236-1, Rev. 1 (111960)
©2011 Microsemi Corporation
Page 4 of 5
2N2944AUB – 2N2946AUB
PACKAGE DIMENSIONS
Symbol
BH
BL
BW
CL
CW
LL1
LL2
inch
Min
.046
.115
.085
.022
.017
Dimensions
millimeters
Max
Min
Max
.056
1.17
1.42
.128
2.92
3.25
.108
2.16
2.74
.128
3.25
.108
2.74
.038
0.56
0.97
.035
0.43
0.89
Note
Symbol
LS1
LS2
LW
r
r1
r2
inch
Min
.035
.071
0.16
Dimensions
millimeters
Max
Min
Max
.039
0.89
0.99
.079
1.80
2.01
0.24
0.41
0.61
.008
0.20
.012
0.31
.022
.056
Note
NOTES:
1. Dimensions are in inches.
2. Millimeters are given for general information only.
3. Hatched areas on package denote metallized areas.
4. Pad 1 = Base, Pad 2 = Emitter, Pad 3 = Collector, Pad 4 = Shielding connected to the lid.
5. In accordance with ASME Y14.5M, diameters are equivalent to Φx symbology.
T4-LDS-0236-1, Rev. 1 (111960)
©2011 Microsemi Corporation
Page 5 of 5