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MJD 122T4 STM
Datasheet
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ST MICROELECTRONICS MJD 122T4 STM Datasheet

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Complementary power Darlington transistors
Features
■ Low collector-emitter saturation voltage
Applications
■ General purpose linear and switching
MJD122
MJD127
3
1
Description
DPAK
The devices are manufactured in planar technology with “base island” layout and monolithic Darlington configuration. The resulting transistors show exceptional high gain performance coupled with very low saturation voltage.

Table 1. Device summary

Order codes Marking Polarity Package Packaging

Figure 1. Internal schematic diagrams

NPN: R1= 7 KΩ
R
= 70 Ω
2
PNP: R1= 16 KΩ
R
= 60 Ω
2
MJD122T4 MJD122 NPN
DPAK Tape and reel
MJD127T4 MJD127 PNP
April 2009 Doc ID 3541 Rev 11 1/12
www.st.com
12
Content MJD122, MJD127
Content
1 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Electrical characteristics (curves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2/12 Doc ID 3541 Rev 11
MJD122, MJD127 Electrical ratings

1 Electrical ratings

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit
V
V
V
P
Collector-base voltage (IE = 0) 100 V
CBO
Collector-emitter voltage (IB = 0) 100 V
CEO
Emitter-base voltage (IC = 0) 5 V
EBO
Collector current 8 A
I
C
Collector peak current 16 A
I
CM
I
Base current 0.12 A
B
Total dissipation at T
TOT
Storage temperature -65 to 150 °C
T
stg
T
Max. operating junction temperature 150 °C
J
= 25°C 20 W
case
Note: For PNP types voltage and current values are negative.

Table 3. Thermal data

Symbol Parameter Value Unit
R
Thermal resistance junction-case max. 6.25 °C/W
thj-c
Doc ID 3541 Rev 11 3/12
Electrical characteristics MJD122, MJD127

2 Electrical characteristics

(T
= 25 °C; unless otherwise specified)
case

Table 4. Electrical characteristics

Symbol Parameter Test conditions Min. Typ. Max. Unit
I
CBO
I
CEO
I
EBO
V
CEO(sus)
V
CE(sat)
Collector cut-off current
(I
= 0)
E
Collector cut-off current
= 0)
(I
B
Emitter cut-off current
= 0)
(I
C
Collector-emitter
(1)
sustaining voltage (IB = 0)
(1)
Collector-emitter saturation voltage
Base-emitter saturation
BE(sat)
V
BE(on)
h
FE
(1)
voltage
(1)
Base-emitter on voltage
(1)
DC current gain
V
1. Pulsed duration = 300 µs, duty cycle ≤ 1.5%
V
= 100 V
CB
V
= 50 V
CE
= 5 V
V
EB
IC = 30 mA 100 - V
= 4 A _ IB = 16 mA
I
C
= 8 A _ IB = 80 mA
I
C
IC = 8 A _ IB = 80 mA
= 4 A _ V
I
C
I
= 4A V
C
= 8 A V
I
C
CE
CE
CE
Note: For PNP types voltage and current values are negative.
= 4 V
= 4 V
= 4 V
1000
100
-10µA
-10µA
-2mA
2
-
V
4
V
-4.5V
-2.8V
12000
-
4/12 Doc ID 3541 Rev 11
MJD122, MJD127 Electrical characteristics

2.1 Electrical characteristics (curves)

Figure 2. Safe operating area Figure 3. Derating curve
Figure 4. DC current gain for NPN type Figure 5. DC current gain for PNP type
h
FE
AM00696v1
1000
Tj= -40 °C Tj= 25 °C
100
Tj=125 °C
VCE= 3 V
10
0.01
0.1
1
Ic(A)
Figure 6. Collector-emitter saturation voltage
for NPN type
V
CE(sat)
(V)
1.4
1
AM00698v1
hFE= 250
h
FE
AM00697v1
1000
Tj= -40 °C Tj= 25 °C
100
Tj=125 °C
VCE= -3 V
10
-0.01
-0.1
-1
Ic(A)
Figure 7. Collector-emitter saturation voltage
for PNP type
V
CE(sat)
(V)
hFE= 250
-1.4
-1
AM00699v1
0.6
Tj= -40 °C Tj= 25 °C
-0.6
Tj=125 °C
0.2
0.1
1
Ic(A)
-0.2
-0.1
Tj= -40 °C Tj= 25 °C Tj=125 °C
-1
Ic(A)
Doc ID 3541 Rev 11 5/12
Electrical characteristics MJD122, MJD127
Figure 8. Base-emitter saturation voltage for
V
BE(sat)
(V)
NPN type
hFE= 250
2.0
1.5
1.0
0.5
0.1
AM00700v1
Tj= -40 °C Tj= 25 °C Tj=125 °C
1
Ic(A)
Figure 10. Base-emitter on voltage for NPN
V
type
AM03262v1
BE(on)
(V)
VCE= 3 V
2.0
Figure 9. Base-emitter saturation voltage for
PNP type
V
BE(sat)
(V)
-2.0
-1.5
-1.0
-0.5
-0.1
hFE= 250
Tj= -40 °C Tj= 25 °C Tj=125 °C
-1
AM03261v1
Ic(A)
Figure 11. Base-emitter on voltage for PNP
type
V
BE(on)
(V)
-2.0
VCE= -3 V
AM03263v1
1.5
1.0
Tj= -40 °C Tj= 25 °C Tj=125 °C
0.5
0.1
1
Figure 12. Resistive load switching times for
NPN type (on)
t(ns)
Vcc= 30 V hFE=250 Vbeo= - 5 V Ibon= - Ibo
100
10
1
0
Delay time Rise time
3
4
2
5
Ic(A)
AM03264v1
Ic(A)
-1.5
-1.0
Tj= -40 °C Tj= 25 °C Tj=125 °C
-0.5
- 0.1
-1
Ic(A)
Figure 13. Resistive load switching times for
PNP type (on)
t(ns)
100
10
0
Vcc= -30 V hFE=250 Vbeo= 5 V
-Ibon= Ibo
-1
-2
-3
Delay time Rise time
-4
-5
AM03265v1
Ic(A)
6/12 Doc ID 3541 Rev 11
MJD122, MJD127 Electrical characteristics
Figure 14. Resistive load switching times for
NPN type (off)
t(ns)
AM03266v1
Figure 15. Resistive load switching times for
PNP type (off)
t(ns)
Vcc= -30 V hFE=250 Vbeo= 5 V
-Ibon= Ibo Vcc= 30 V hFE=250 Vbeo= - 5 V
1000
1000
Ibon= - Ibo
100
Storage time Fall time
1
0
3
4
2
5
Ic(A)
100
-1
0
-2
-3
Storage time Fall time
-4
-5

Figure 16. Capacitances for NPN type Figure 17. Capacitances for PNP type

C(pF)
F= 0.1 MHz
C
CB
AM03269v1
C(pF)
F= 0.1 MHz
C
CB
AM03267v1
Ic(A)
AM03268v1
100
C
EB
10
0.01
0.1
1
10
VR(V)
100
10
0.01
C
EB
0.1
1
10
VR(V)
Doc ID 3541 Rev 11 7/12
Test circuits MJD122, MJD127

3 Test circuits

Figure 18. Resistive load switching for NPN type

1. Fast electronic switch
2. Non-inductive resistor

Figure 19. Resistive load switching for PNP type

1. Fast electronic switch
2. Non-inductive resistor
8/12 Doc ID 3541 Rev 11
MJD122, MJD127 Package mechanical data

4 Package mechanical data

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK
®
packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK is an ST trademark.
Doc ID 3541 Rev 11 9/12
Package mechanical data MJD122, MJD127
DIM.
mm.
min. typ max.
A 2.20 2.40
A1 0.901.10
A2 0.03 0.23
b 0.64 0.90
b4 5.20 5.40
c 0.45 0.60
c2 0.48 0.60
D 6.00 6.20
D1 5.10
E 6.40 6.60
E1 4.70
e2.28
e1 4.40 4.60
H 9.35 10.10
L1
L1 2.80
L2 0.80
L4 0.60 1
R0.20
V2 0
o
8
o
TO-252 (DPAK) mechanical data
0068772_G
10/12 Doc ID 3541 Rev 11
MJD122, MJD127 Revision history

5 Revision history

Table 5. Document revision history

Date Revision Changes
01-Aug-2002 8
01-Oct-2007 9 Collector current limits have been improved
03-Oct-2007 10 Package mechanical data updated
21-Apr-2009 11
The device MJD127 has been inserted
Section 2.1: Electrical characteristics (curves) has been updated
Doc ID 3541 Rev 11 11/12
MJD122, MJD127
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12/12 Doc ID 3541 Rev 11
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