Small-outline transistor

Family of discrete surface mount transistors
Size comparison of transistor packages. Two surface-mount packages, SOT23 and SOT223, are shown next to through-hole packages

A small outline transistor (SOT) is a family of small footprint, discrete surface mount transistor commonly used in consumer electronics. The most common SOT are SOT23 variations,[1]. SOT23-5 differs from SOT23 in a wider body of 1.6 mm (0.063 in) instead of 1.3 mm (0.051 in). Also, manufacturers offer the nearly identical thin small outline transistor (TSOT/TSOP) package, where lower height is important.[2][3] [4][5]

SOT23, SOT323, SOT416

The SOT23 package is very popular and a common package for transistors, as well as diodes and voltage regulators.[1]

SOT23 (TO236AB, SOT346, SC59A, TO236AA, SMT3),
SOT323 (SC70-3, UMT3),
SOT416 (SOT523, SC75A, SC90, EMT3)
Dimensions (mm)
SOT23[6][7][8][9] SOT23-3[10] SOT323[11][12] SOT416[13][14]
A 2.9 2.9 2.0
B 1.3/1.6 1.3/1.6 1.25
C
D
G 1.9 1.9 1.3 1.0
H
J
K
L 0.95 0.95 0.65 0.5
S 1.45 -

1.75

V

SOT23-5, SOT353, SOT553

SOT23-5 (SOT25, SC74A, TSOP-5, SOT753, MO-178AA, SMT5),
SOT353 (SC70-5, SC88A, TSSOP-5, UMT5), SOT553
Dimensions (mm)
SOT23-5[15][1] SOT353[16][17] SOT553[18]
A 2.90 ±0.10 2.0 ±0.2 1.60 ±0.10
B 1.60 ±0.10 1.25 ±0.10 1.20 +0.05 -0.10
C 1.04 – 1.44 0.8 – 1.1 0.60 +0.02 -0.05
D 0.350 –0.500 0.2 – 0.3 0.20 +0.10 -0.05
G 0.95 0.65 0.50
H 0.05 –0.15 ≤0.1 0.00
J 0.15 +0.03 -0.05
K 0.20 ±0.10
S 2.0 – 2.2 1.60 +0.10 -0.05
V

SOT23-6, SOT363, SOT563

SOT23-6 (SOT26, SC59-6, SC74, TSOP-6, MO-178AB, SMT6, SM6, Mini6, SOT457),
SOT363 (SC70-6, SC88, TSSOP-6, UMT6, US6, S-Mini6),
SOT563 (SC-107C, ES6)
Dimensions (mm)
SOT23-6[1][19][20][21] SOT363[22][23] SOT563[24][25][26]
A 2.9 2.0 1.60 ±0.10
B 1.625 1.25 1.20 +0.05 -0.10
C 1.25 0.95 0.60 +0.02 -0.05
D 0.4 0.25 0.20 +0.10 -0.05
G 0.95 0.65 0.50
H 0.1 0.00
J 0.18 0.15 +0.03 -0.05
K 0.38 0.20 ±0.10
S 2.8 2.1 1.60 +0.10 -0.05
V

SOT23-8

SOT23-8 (SOT28)[1][27]
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.[28]

SOT23-4, SOT143, SOT343

SOT23-4, SOT143 (TO253), SOT343
Dimensions (mm)
SOT143[29] SOT343[30]
A 2.90 ±0.10 2.00 - 2.20
B 1.30 ±0.10 1.150 - 1.350
C 0.900 - 1.100
D 0.400 +0.110 -0.030 0.250 - 0.400
F 0.800 +0.130 -0.030 0.350 - 0.500
G 1.92 +0.11 -0.14 1.200 - 1.400
H 0.05 +0.05 -0.037 0.000 - 0.100
J 0.11 +0.07 -0.025 0.080 - 0.150
K 0.89 - 1.00 0.525
L
R
S 2.38 ±0.10 2.150 - 2.450

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)[31]
Dimensions (mm)
A 4.5
B 2.5
C 1.5 ± 0.1
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. It was introduced by Philips.[32]

SOT223-4 (SC73, TO261AA)[33][34][35]
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[36]
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)[37]
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°

See also

References

  1. ^ a b c d e "SOT-23 and TSOT package datasheet" (PDF). Amkor Technology. 2021. Archived (PDF) from the original on December 19, 2018. Retrieved 2022-05-25. link from amkor.com/packaging/leadframe/sot23-tsot
  2. ^ "Nexperia SOT 23 Package and Dimensions". SOT23 and SOT 23-3 with the smaller body are also known as TO-236AB.
  3. ^ "Thin SOT-23 Package Information" (PDF). Vishay Siliconix. Retrieved 4 May 2017.
  4. ^ "Packaging Information". Intersil. Retrieved 4 May 2017.
  5. ^ "Thin SOT-23 Package Information" (PDF). Vishay Siliconix. Retrieved 4 May 2017.
  6. ^ SOT23-3 package drawing; NXP.com
  7. ^ SOT23-3 dummy component package drawing; TopLine.tv
  8. ^ SOT346 package drawing; NXP.com
  9. ^ SC59A dummy component package drawing; TopLine.tv
  10. ^ SOT23-3 package drawing; union.ic.com
  11. ^ SOT323 package drawing; NXP.com
  12. ^ SC70-3 dummy component package drawing; TopLine.tv
  13. ^ SOT416 package drawing; NXP.com
  14. ^ SC75A dummy component package drawing; TopLine.tv
  15. ^ SOT25 dummy component package drawing; TopLine.tv
  16. ^ SOT353 package drawing; NXP.com
  17. ^ SOT353 dummy component package drawing; TopLine.tv
  18. ^ "SOT553 package drawing; diodes.com" (PDF).
  19. ^ "SOT457 Package information" (PDF). NXP. 2018-05-05. Retrieved 2022-05-25. plastic, surface-mounted package (TSOP6); 6 leads; 0.95 mm pitch; 2.9 mm x 1.5 mm x 1 mm body
  20. ^ "SOT26 dummy component package drawing" (PDF). topline.tv. 2015-09-24. Retrieved 2022-05-25.
  21. ^ "SOT 6L package drawing" (PDF). maximintegrated.com. Maxim Integrated. Retrieved 2022-05-25.
  22. ^ "SOT363 Package information" (PDF). NXP. 2018-05-09. Retrieved 2021-09-07. plastic, surface-mounted package; 6 leads; 0.65 mm pitch; 2mm x 1.25 mm x 0.95 mm body
  23. ^ "SOT363 dummy component package drawing" (PDF). topline.tv. 2011-12-18. Retrieved 2022-05-25.
  24. ^ "SOT563 package drawing" (PDF). diodes.com. Diodes. 2021-01-07. Retrieved 2022-05-25.
  25. ^ "SOT-563, SC-107C dimensions" (PDF). rohm.com. Rohm. 2016-09-09. Retrieved 2022-05-25.
  26. ^ "ES6 package & packing information detail". toshiba.semicon-storage.com. Toshiba. Retrieved 2022-05-25.
  27. ^ SOT28 dummy component package drawing; TopLine.tv
  28. ^ "TO-92 (SOT54)". Nexperia. 2004-11-16. Retrieved 2017-12-12.
  29. ^ "SOT143 package drawing, diodes.com" (PDF).
  30. ^ "SOT343 package drawing; diodes.com" (PDF).
  31. ^ SOT89-3 dummy component package drawing; TopLine.tv
  32. ^ Hollander, Dave (1995). "Packaging trends and mounting techniques for power surface mount components". Proceedings of 1995 International Conference on Power Electronics and Drive Systems. PEDS 95. Vol. 1. pp. 264–270. doi:10.1109/PEDS.1995.404911. ISBN 0-7803-2423-4. S2CID 109636238.
  33. ^ SOT223-4 package drawing; NXP.com
  34. ^ SOT223-4 dummy component package drawing; TopLine.tv
  35. ^ SOT223-4 package drawing; semicon-data.com
  36. ^ SOT223-5 package drawing; semicon-data.com
  37. ^ H-bridge MOSFET datasheet in SOT223-8 package; diodes.com
  • v
  • t
  • e
Semiconductor packages
Single diode
  • DO-201 (DO-27)
  • DO-204 (DO-7 / DO-26 / DO-35 / DO-41)
  • DO-213 (MELF / SOD-80 / LL34)
  • DO-214 (SMA / SMB / SMC)
  • SOD (SOD-123 / SOD-323 / SOD-523 / SOD-923)
3...5-pin
  • SOT / TSOT
  • TO-3 (TH / Panel)
  • TO-5 (TH)
  • TO-8 (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-268 (D3PAK) (SMT)
  • TO-273 (Super-220) (SMT)
  • TO-274 (Super-247) (SMT)
Single rowDual rowQuad row
Grid arrayWaferRelated topics
It is relatively common to find packages that contain other components than their designated ones, such as diodes or voltage regulators in transistor packages, etc.