A small outline transistor (SOT) is a small footprint, discrete surface mount transistor commonly used in consumer electronics. Many manufacturers[1][2] also offer the nearly identical thin small outline transistor (TSOT) package for use in electronic circuits where height is an important consideration.
SOT23-3, SOT323, SOT416
The SOT23-3 package is very popular and a common package for transistors, and is also used for diodes and voltage regulators.
SOT23-3 (SOT23, TO236AB, SOT346, SC59A, TO236AA, SMT3),
SOT323 (SC70-3, UMT3),
SOT416 (SOT523, SC75A, SC90, EMT3)
|
Dimensions (mm) |
SOT23-3[3][4][5][6] |
SOT323[7][8] |
SOT416[9][10] |
A |
|
|
|
B |
|
|
|
C |
|
|
|
D |
|
|
|
G |
1.9 |
1.3 |
1.0 |
H |
|
|
|
J |
|
|
|
K |
|
|
|
L |
0.95 |
0.65 |
0.5 |
S |
|
|
|
V |
|
|
|
SOT23-5, SOT353
SOT23-5 (SOT25, SC74A, SOT753, SMT5),
SOT353 (SC70-5, SC88A, TSSOP-5, UMT5)
|
Dimensions (mm) |
SOT23-5[11] |
SOT353[12][13] |
A |
2.90±0.10 |
2.0±0.2 |
B |
1.60±0.10 |
1.25±0.10 |
C |
1.04–1.44 |
0.8–1.1 |
D |
0.350–0.500 |
0.2–0.3 |
G |
0.95 |
0.65 |
H |
0.05–0.15 |
≤0.1 |
J |
|
|
K |
|
|
S |
|
2.0–2.2 |
V |
|
|
SOT23-6, SOT363
SOT23-6 (SOT26, SC59-6, SC74, TSOP-6, SMT6, SM6, Mini6, SOT457),
SOT363 (SC70-6, SC88, TSSOP-6, UMT6, US6, S-Mini6)
|
Dimensions (mm) |
SOT23-6[14][15][16] |
SOT363[17][18] |
A |
2.9 |
2.0 |
B |
1.625 |
1.25 |
C |
1.25 |
0.95 |
D |
0.4 |
0.25 |
G |
0.95 |
0.65 |
H |
|
0.1 |
J |
|
0.18 |
K |
|
0.38 |
S |
2.8 |
2.1 |
V |
|
|
SOT23-8
SOT23-8 (SOT28)[19]
|
Dimensions (mm) |
A |
2.90 ± 0.10 |
B |
1.60 ± 0.10 |
C |
1.27 |
D |
0.3 |
G |
0.650 typ. |
H |
0.0762 |
J |
0.152 |
K |
0.575 |
S |
2.80 ± 0.20 |
L |
|
SOT54
SOT54 is an alternate designation for the JEDEC TO-92 package.[20]
SOT143, SOT343
SOT143 (TO253), SOT343
|
Dimensions (mm) |
SOT143 |
SOT343 |
A |
|
|
B |
|
|
C |
|
|
D |
|
|
F |
|
|
G |
1.78 |
1.2 |
H |
|
|
J |
|
|
K |
|
|
L |
|
|
R |
|
|
S |
|
|
SOT490
SOT490 (SOT523F, SC89, EMT3F)
|
Dimensions (mm) |
A |
|
B |
|
C |
|
D |
|
G |
0.5 |
J |
|
K |
|
S |
|
L |
1.0 |
SOT89-3
The SOT89-3 electrically only has three leads (contact/pin). The wide lead (tab) is physically part of the middle lead on the other side of the package. Some call this package a SOT89-4, since it visually appears to have four leads when looking down at the part.
SOT89-3 (TO243AA, SC62, MPT3)[21]
|
Dimensions (mm) |
A |
4.5 |
B |
2.5 |
C |
|
D |
|
E |
1.6 |
F |
|
G |
1.5 |
J |
|
K |
|
S |
|
L |
3 |
SOT89-5
The SOT89-5 electrically only has five leads (contact/pin). The middle lead is physically part of the middle lead on the other side of the package. Some call this package a SOT89-6, since it visually appears to have six leads when looking down at the part.
SOT89-5
|
Dimensions (mm) |
A |
4.6 |
B |
2.6 |
C |
1.6 |
D |
|
E |
|
F |
|
G |
1.5 |
H |
|
J |
|
K |
|
S |
|
L |
|
SOT223 (SOT223-4)
The SOT223-4 package is a popular package for voltage regulators.
SOT223-4 (SC73, TO261AA)[22][23][24]
|
Dimensions (mm) |
Min |
Typ |
Max |
A |
|
|
1.80 |
A1 |
|
0.02 |
|
b |
0.60 |
0.70 |
0.80 |
b2 |
2.90 |
3.00 |
3.10 |
c |
0.24 |
0.26 |
0.32 |
D |
6.30 |
6.50 |
6.70 |
e |
|
2.3 |
|
e1 |
|
4.6 |
|
E |
6.70 |
7.00 |
7.30 |
E1 |
3.30 |
3.50 |
3.70 |
SOT223-5
The SOT223-5 package is a popular package for voltage regulators.
SOT223-5[25]
|
Dimensions (mm) |
Min |
Typ |
Max |
A |
|
1.8 |
|
A1 |
0.02 |
0.04 |
0.10 |
A2 |
1.55 |
|
1.65 |
A3 |
0.87 |
|
0.91 |
b |
0.41 |
0.46 |
0.51 |
b2 |
2.95 |
3.00 |
3.05 |
C |
0.24 |
|
0.32 |
D |
6.45 |
6.50 |
6.55 |
E |
6.86 |
7.00 |
7.26 |
E1 |
3.45 |
3.50 |
3.55 |
e |
|
1.27 |
|
e1 |
|
5.08 |
|
L |
0.91 |
|
1.14 |
SOT223-8
The SOT223-8 package is a popular package for bridged quad transistors.
SOT223-8 (SM-8)[26]
|
Dimensions (mm) |
Min |
Typ |
Max |
A |
|
1.60 |
1.70 |
A1 |
0.02 |
0.04 |
0.10 |
b |
0.70 |
0.80 |
0.90 |
c |
0.24 |
0.28 |
0.32 |
D |
6.30 |
6.60 |
6.70 |
e |
|
1.53 |
|
e1 |
|
4.59 |
|
E |
6.70 |
7.00 |
7.30 |
E1 |
3.30 |
3.50 |
3.70 |
L |
0.75 |
0.90 |
1.00 |
ø |
|
45° |
|
ø1 |
|
|
15° |
ø2 |
|
10° |
|
References
|
---|
Diode |
- DO-204 (DO-7 / DO-35 / DO-41)
- DO-213 (MELF)
- DO-214 (SMA / SMB / SMC)
- SOD (SOD-123 / SOD-323 / SOD-523 / SOD-923)
|
---|
Transistor |
- SOT / TSOT
- TO-3 (TH / Panel)
- TO-5 (TH)
- TO-18 (TH)
- TO-39 (TH)
- TO-66 (TH / Panel)
- TO-92 (TH)
- TO-126 (TH / Panel)
- TO-202 (TH / Panel)
- TO-220 (TH / Panel)
- TO-247 (TH / Panel)
- TO-251 (IPAK) (SMT)
- TO-252 (DPAK) (SMT)
- TO-262 (I2PAK) (SMT)
- TO-263 (D2PAK) (SMT)
- TO-273 (Super-220) (SMT)
- TO-274 (Super-247) (SMT)
|
---|
Single row | |
---|
Dual row | |
---|
Quad row | |
---|
Grid array | |
---|
Wafer | |
---|
Related topics | |
---|
Note: It's relatively common to find packages that contain other components than their designated ones, such as diodes or voltage regulators in transistor packages, etc. |