Page 1
2N6027, 2N6028
Preferred Device
Programmable
Unijunction Transistor
Programmable Unijunction
Transistor Triggers
Designed to enable the engineer to “program’’ unijunction
characteristics such as RBB, η, IV, and IP by merely selecting two
resistor values. Application includes thyristor–trigger, oscillator , pulse
and timing circuits. These devices may also be used in special thyristor
applications due to the availability of an anode gate. Supplied in an
inexpensive TO–92 plastic package for high–volume requirements,
this package is readily adaptable for use in automatic insertion
equipment.
• Programmable — R
• Low On–State Voltage — 1.5 Volts Maximum @ I
• Low Gate to Anode Leakage Current — 10 nA Maximum
• High Peak Output Voltage — 11 Volts Typical
• Low Offset Voltage — 0.35 Volt Typical (R
• Device Marking: Logo, Device T ype, e.g., 2N6027, Date Code
, η, IV and I
BB
P
= 50 mA
F
= 10 k ohms)
G
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PUTs
40 VOLTS
300 mW
G
A
K
MAXIMUM RATINGS (T
Rating Symbol Value Unit
*Power Dissipation
Derate Above 25°C
*DC Forward Anode Current
Derate Above 25°C
*DC Gate Current I
Repetitive Peak Forward Current
µs Pulse Width, 1% Duty Cycle
100
µs Pulse Width, 1% Duty Cycle
*20
Non–Repetitive Peak Forward Current
µs Pulse Width
10
*Gate to Cathode Forward Voltage V
*Gate to Cathode Reverse Voltage V
*Gate to Anode Reverse Voltage V
*Anode to Cathode Voltage
Operating Junction Temperature Range T
*Storage Temperature Range T
*Indicates JEDEC Registered Data
(1) Anode positive, RGA = 1000 ohms
Anode negative, RGA = open
= 25°C unless otherwise noted)
J
(1)
P
1/θ
I
I
TRM
I
TSM
GKF
GKR
GAR
V
AK
stg
1
F
JA
T
G
J
300
4.0
150
2.67
"
50 mA
1.0
2.0
5.0 Amps
40 Volts
*
5.0 Volts
40 Volts
"
40 Volts
–50 to
+100
–55 to
+150
mW
mW/°C
mA
mA/°C
Amps
°C
°C
1
2
3
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
Preferred devices are recommended choices for future use
and best overall value.
2
3
TO–92 (TO–226AA)
CASE 029
STYLE 16
PIN ASSIGNMENT
Anode
Gate
Cathode
Semiconductor Components Industries, LLC, 2000
May, 2000 – Rev. 2
1 Publication Order Number:
2N6027/D
Page 2
2N6027, 2N6028
THERMAL CHARACTERISTICS
Characteristic Symbol Max Unit
Thermal Resistance, Junction to Case R
Thermal Resistance, Junction to Ambient R
Maximum Lead Temperature for Soldering Purposes
(t1/16″ from case, 10 secs max)
θJC
θJA
T
L
75 °C/W
200 °C/W
260 °C
ELECTRICAL CHARACTERISTICS (T
Characteristic
*Peak Current
(VS = 10 Vdc, RG = 1 MΩ) 2N6027
(VS = 10 Vdc, RG = 10 k ohms) 2N6027
*Offset Voltage
(VS = 10 Vdc, RG = 1 MΩ) 2N6027
(VS = 10 Vdc, RG = 10 k ohms) (Both Types)
*Valley Current
(VS = 10 Vdc, RG = 1 MΩ) 2N6027
(VS = 10 Vdc, RG = 10 k ohms) 2N6027
(VS = 10 Vdc, RG = 200 ohms) 2N6027
*Gate to Anode Leakage Current
(VS = 40 Vdc, TA = 25°C, Cathode Open)
(VS = 40 Vdc, TA = 75°C, Cathode Open)
Gate to Cathode Leakage Current
(VS = 40 Vdc, Anode to Cathode Shorted)
*Forward Voltage (IF = 50 mA Peak)
*Peak Output Voltage
(VG = 20 Vdc, CC = 0.2 µF)
Pulse Voltage Rise T ime
(VB = 20 Vdc, CC = 0.2 µF)
*Indicates JEDEC Registered Data
(1) Pulse Test: Pulse Width ≤ 300 µsec, Duty Cycle ≤ 2%.
= 25°C unless otherwise noted.)
C
2N6028
2N6028
2N6028
2N6028
2N6028
2N6028
(1)
Fig. No. Symbol Min Typ Max Unit
2,9,11 I
1 V
1,4,5 I
— I
— I
1,6 V
3,7 V
3 t
P
T
V
GAO
GKS
F
o
r
—
—
—
—
0.2
0.2
0.2
—
—
70
25
1.5
1.0
—
—
— 5.0 50 nAdc
— 0.8 1.5 Volts
6.0 11 — Volt
— 40 80 ns
1.25
0.08
4.0
0.70
0.70
0.50
0.35
18
18
150
150
—
—
1.0
3.0
2.0
0.15
5.0
1.0
1.6
0.6
0.6
50
25
—
—
—
—
10
—
µA
Volts
µA
mA
nAdc
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2
Page 3
2N6027, 2N6028
Adjust
for
Turn–on
Threshold
V
B
Scope
I
A
V
AK
1A –
Programmable Unijunction
with “Program” Resistors
R1 and R2
+V
A
G
K
100k
1.0%
2N5270
20
B
R2
– VS =
R1
–
IP (SENSE)
100 µV = 1.0 nA
+
0.01 µF
Put
Under
Test
I
R1
R1 + R2
A
+
V
B
V
AK
1B –
Equivalent Test Circuit for
Figure 1A used for electrical
characteristics testing
(also see Figure 2)
R
RG =
G
Figure 1. Electrical Characterization
510k
R
RG = R/2
VS = V
B/2
(See Figure 1)
R
C
C
R1 R2
R1 + R2
V
S
+V
20 Ω
V
A
–V
P
V
S
V
F
V
V
I
GAO
B
16k
27k
v
o
0.6 V
VT = VP – V
I
P
IC – Electrical Characteristics
+V
V
o
6 V
t
S
I
V
f
I
I
A
F
t
Figure 2. Peak Current (IP) Test Circuit Figure 3. Vo and tr Test Circuit
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3
Page 4
2N6027, 2N6028
TYPICAL V ALLEY CURRENT BEHAVIOR
µ
V
I , VALLEY CURRENT ( A)
1000
100
10
10
5.0
2.0
1.0
0.5
500
RG = 10 kΩ
100 kΩ
1 MΩ
1051520
VS, SUPPLY VOLTAGE (VOLTS) TA, AMBIENT TEMPERATURE (°C)
µ
100
V
I , VALLEY CURRENT ( A)
10
5
–25 +25 +75
0–50 +50 +100
RG = 10 kΩ
Figure 4. Effect of Supply Voltage Figure 5. Effect of Temperature
25
TA = 25°C
TA = 25°C
(SEE FIGURE 3)
20
15
100 kΩ
1 MΩ
CC = 0.2 µF
F
V , PEAK FORWARD VOLTAGE (VOLTS)
0.2
0.1
0.05
0.02
0.01
10
5.0
o
V , PEAK OUTPUT VOLTAGE (VOLTS)
0
0.020.01 0.05 0.1
IF, PEAK FORWARD CURRENT (AMP) VS, SUPPLY VOLTAGE (VOLTS)
0.2 2.00.5 1.0 5.0 35 40
5.0 15 25
1002030
Figure 6. Forward Voltage Figure 7. Peak Output Voltage
B2
R
R
2
R
B1
η =
1
RBB = R1 + R2
R1
R1 + R2
G
T
G
A
C
C
K
Typical Application
A
K
Circuit Symbol
A
E
G
P
N
P
N
K
Equivalent Circuit
with External “Program”
Resistors R1 and R2
1000 pF
+
R
2
R
1
Figure 8. Programmable Unijunction
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4
Page 5
2N6027, 2N6028
TYPICAL PEAK CURRENT BEHAVIOR
2N6027
10
5.0
µ
3.0
2.0
1.0
RG = 10 kΩ
0.5
P
I , PEAK CURRENT ( A)
0.3
0.2
0.1
100 kΩ
1.0 MΩ
105.0 15 20
VS, SUPPLY VOLTAGE (VOLTS) TA, AMBIENT TEMPERATURE (°C)
(SEE FIGURE 2)
Figure 9. Effect of Supply Voltage and R
1.0
0.7
0.5
µ
0.3
0.2
0.1
0.07
0.05
P
I , PEAK CURRENT ( A)
0.03
0.02
0.01
RG = 10 kΩ
100 kΩ
1.0 MΩ
(SEE FIGURE 2)
105.0 15 20
TA = 25°C
TA = 25°C
G
2N6028
µ
I , PEAK CURRENT ( A)
100
µ
P
I , PEAK CURRENT ( A)
P
0.05
0.02
0.01
50
20
10
5.0
2.0
1.0
0.5
0.2
0.1
10
5.0
2.0
1.0
0.5
0.2
0.1
VS = 10 VOLTS
(SEE FIGURE 2)
RG = 10 kΩ
100 kΩ
1.0 MΩ
–25 +25 +75
0–50 +50 +100
Figure 10. Effect of T emperature and R
VS = 10 VOLTS
(SEE FIGURE 2)
RG = 10 kΩ
100 kΩ
1.0 MΩ
–25 +25 +75
0–50 +50 +100
G
VS, SUPPLY VOLTAGE (VOLTS) TA, AMBIENT TEMPERATURE (°C)
Figure 11. Effect of Supply Voltage and R
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G
5
Figure 12. Effect of T emperature and R
G
Page 6
2N6027, 2N6028
TO–92 EIA RADIAL TAPE IN FAN FOLD BOX OR ON REEL
H2A H2A
H
W2
H4
H5
L1
H1
W1
W
F1
F2
P2 P2
P1
P
L
D
H2B H2B
T1
T
T2
Figure 13. Device Positioning on T ape
Specification
Inches Millimeter
Symbol Item
D
D2
F1, F2
H
H1
H2A
H2B
H4
H5
L
L1
P
P1
P2
T
T1
T2
W
W1
W2
Tape Feedhole Diameter
Component Lead Thickness Dimension
Component Lead Pitch
Bottom of Component to Seating Plane
Feedhole Location
Deflection Left or Right
Deflection Front or Rear
Feedhole to Bottom of Component
Feedhole to Seating Plane
Defective Unit Clipped Dimension
Lead Wire Enclosure
Feedhole Pitch
Feedhole Center to Center Lead
First Lead Spacing Dimension
Adhesive Tape Thickness
Overall Taped Package Thickness
Carrier Strip Thickness
Carrier Strip Width
Adhesive Tape Width
Adhesive Tape Position
NOTES:
1. Maximum alignment deviation between leads not to be greater than 0.2 mm.
2. Defective components shall be clipped from the carrier tape such that the remaining protrusion (L) does not exceed a maximum of 11 mm.
3. Component lead to tape adhesion must meet the pull test requirements.
4. Maximum non–cumulative variation between tape feed holes shall not exceed 1 mm in 20 pitches.
5. Holddown tape not to extend beyond the edge(s) of carrier tape and there shall be no exposure of adhesive.
6. No more than 1 consecutive missing component is permitted.
7. A tape trailer and leader, having at least three feed holes is required before the first and after the last component.
8. Splices will not interfere with the sprocket feed holes.
Min Max Min Max
0.1496 0.1653 3.8 4.2
0.015 0.020 0.38 0.51
0.0945 0.110 2.4 2.8
.059 .156 1.5 4.0
0.3346 0.3741 8.5 9.5
0 0.039 0 1.0
0 0.051 0 1.0
0.7086 0.768 18 19.5
0.610 0.649 15.5 16.5
0.3346 0.433 8.5 11
0.09842 — 2.5 —
0.4921 0.5079 12.5 12.9
0.2342 0.2658 5.95 6.75
0.1397 0.1556 3.55 3.95
0.06 0.08 0.15 0.20
— 0.0567 — 1.44
0.014 0.027 0.35 0.65
0.6889 0.7481 17.5 19
0.2165 0.2841 5.5 6.3
.0059 0.01968 .15 0.5
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Page 7
2N6027, 2N6028
ORDERING & SHIPPING INFORMATION: 2N6027 and 2N6028 packaging options, Device Suffix
Europe
U.S.
2N6027, 2N6028
2N6027, 2N6028RLRA
2N6028RLRM
2N6028RLRP
Equivalent
2N6027RL1
Shipping Description of TO92 Tape Orientation
Bulk in Box (5K/Box)
Radial Tape and Reel (2K/Reel)
Radial Tape and Reel (2K/Reel)
Radial Tape and Fan Fold Box (2K/Box)
Radial Tape and Fan Fold Box (2K/Box)
P ACKAGE DIMENSIONS
TO–92 (TO–226AA)
CASE 029–1 1
ISSUE AJ
N/A, Bulk
Round side of TO92 and adhesive tape visible
Flat side of TO92 and adhesive tape visible
Flat side of TO92 and adhesive tape visible
Round side of TO92 and adhesive tape visible
SEATING
PLANE
A
B
R
P
L
K
XX
1
G
H
V
C
N
D
J
SECTION X–X
N
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. CONTOUR OF PACKAGE BEYOND DIMENSION R
IS UNCONTROLLED.
4. LEAD DIMENSION IS UNCONTROLLED IN P AND
BEYOND DIMENSION K MINIMUM.
DIM MIN MAX MIN MAX
A 0.175 0.205 4.45 5.20
B 0.170 0.210 4.32 5.33
C 0.125 0.165 3.18 4.19
D 0.016 0.021 0.407 0.533
G 0.045 0.055 1.15 1.39
H 0.095 0.105 2.42 2.66
J 0.015 0.020 0.39 0.50
K 0.500 ––– 12.70 –––
L 0.250 ––– 6.35 –––
N 0.080 0.105 2.04 2.66
P ––– 0.100 ––– 2.54
R 0.115 ––– 2.93 –––
V 0.135 ––– 3.43 –––
STYLE 16:
PIN 1. ANODE
2. GATE
3. CATHODE
MILLIMETERSINCHES
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7
Page 8
2N6027, 2N6028
ON Semiconductor and are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes
without further notice to any products herein. SCILLC makes no warranty , representation or guarantee regarding the suitability of its products for any particular
purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability ,
including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or
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alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer .
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2N6027/D
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