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,. link from amkor.com/packaging/leadframe/sot23-tsot SOT23-5 differs from SOT23 in a wider body of instead of . Also, manufacturers offer the nearly identical thin small outline transistor (TSOT/TSOP) package, where lower height is important.SOT23 and SOT 23-3 with the smaller body are also known as TO-236AB.

SOT23-3, SOT323, SOT416 The SOT23-3 package is very popular and a common package for transistors, as well as diodes and voltage regulators.

+ SOT23-3 (TO236AB, SOT346, SC59A, TO236AA, SMT3), SOT323 (SC70-3, UMT3), SOT416 (SOT523, SC75A, SC90, EMT3) Dimensions (mm) SOT23SOT23-3 package drawing; NXP.comSOT23-3 dummy component package drawing; TopLine.tvSOT346 package drawing; NXP.comSC59A dummy component package drawing; TopLine.tv SOT23-3SOT23-3 package drawing; union.ic.com SOT323SOT323 package drawing; NXP.comSC70-3 dummy component package drawing; TopLine.tv SOT416SOT416 package drawing; NXP.comSC75A dummy component package drawing; TopLine.tv A2.92.92.01.4 - 1.8 B1.3/1.61.3/1.61.250.7 - 0.9 C D G 1.9 1.9 1.3 1.0 H J K L 0.95 0.95 0.65 0.5 S1.45 - 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) SOT23-5SOT25 dummy component package drawing; TopLine.tv SOT353SOT353 package drawing; NXP.comSOT353 dummy component package drawing; TopLine.tvSOT553 A 2.90 ±0.10 2.0 ±0.21.60 ±0.10 B 1.60 ±0.10 1.25 ±0.101.20 +0.05 -0.10 C 1.04 – 1.44 0.8 – 1.10.60 +0.02 -0.05 D 0.350 –0.500 0.2 – 0.30.20 +0.10 -0.05 G 0.95 0.650.50 H 0.05 –0.15 ≤0.10.00 J0.15 +0.03 -0.05 K 0.20 ±0.10 S 2.0 – 2.21.60 +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 SOT363SOT563 A 2.9 2.01.60 ±0.10 B 1.625 1.251.20 +0.05 -0.10 C 1.25 0.950.60 +0.02 -0.05 D 0.4 0.250.20 +0.10 -0.05 G 0.95 0.650.50 H 0.10.00 J 0.180.15 +0.03 -0.05 K 0.380.20 ±0.10 S 2.8 2.11.60 +0.10 -0.05 V

SOT23-8

+ SOT23-8 (SOT28)SOT28 dummy component package drawing; TopLine.tv 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.

SOT23-4, SOT143, SOT343

+ SOT23-4, SOT143 (TO253), SOT343 Dimensions (mm) SOT143 SOT343 A2.90 ±0.102.00 - 2.20 B1.30 ±0.101.150 - 1.350 C0.900 - 1.100 D0.400 +0.110 -0.0300.250 - 0.400 F0.800 +0.130 -0.0300.350 - 0.500 G 1.92 +0.11 -0.14 1.200 - 1.400 H0.05 +0.05 -0.0370.000 - 0.100 J0.11 +0.07 -0.0250.080 - 0.150 K0.89 - 1.000.525 L R S2.38 ±0.102.150 - 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)SOT89-3 dummy component package drawing; TopLine.tv Dimensions (mm) A4.5 B2.5 C1.5 ± 0.1 D E1.6 F G 1.5 J K S L3

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) A4.6 B2.6 C1.6 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.

+ SOT223-4 (SC73, TO261AA)SOT223-4 package drawing; NXP.comSOT223-4 dummy component package drawing; TopLine.tvSOT223-4 package drawing; semicon-data.com 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.

+ SOT223-5SOT223-5 package drawing; semicon-data.com 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)H-bridge MOSFET datasheet in SOT223-8 package; diodes.com 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 List of electronics package dimensions

References