component
TL431
Public Made by Adomby adom
TI adjustable precision shunt regulator, SOT-23. Vref 2.5 V, programmable to 36 V, sinks 1-100 mA. Datasheet-verified.
← Commit history
Targeted fixes, page content unchanged: tl431.kicad_sym Datasheet; tl431.lbr; models_3d
3 files changed
+76−16
page.json+42−2@@ -71,7 +71,47 @@ "viewers": { "symbol": "viewers/symbol.html", "footprint": "viewers/footprint.html"- }+ },+ "models_3d": [+ {+ "file": "tl431.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 2.5,+ 3.0,+ 1.2+ ],+ "zmin_mm": 0.0,+ "centre_offset_mm": 0.0,+ "footprint_binding": "identity",+ "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",+ "checked": "2026-11-10",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "tl431-etched.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 2.5,+ 3.0,+ 1.225+ ],+ "zmin_mm": 0.0,+ "centre_offset_mm": 0.0,+ "footprint_binding": "identity",+ "sha256": "02578c3839b8140ccb0b1104d051d111b068de7d3820be3fb92a86327e450118",+ "checked": "2026-11-10",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ] }, "metadata": { "specs": {@@ -130,4 +170,4 @@ "kind": "packaging" } ]-}+}
tl431.kicad_sym+1−1@@ -46,7 +46,7 @@ ) ) )- (property "Datasheet" "http://www.ti.com/lit/ds/symlink/tl431.pdf"+ (property "Datasheet" "https://www.ti.com/lit/ds/symlink/tl431.pdf" (at 1.778 -9.144 0) (show_name no) (do_not_autoplace no)
tl431.lbr+33−13@@ -52,11 +52,23 @@ <library> <description>Shunt Regulator, SOT-23</description> <packages>-<package name="TL431DBZ">- <description>TL431DBZ</description>- <smd name="1" x="-0.9375" y="0.9500" dx="1.4750" dy="0.6000" layer="1"/>- <smd name="2" x="-0.9375" y="-0.9500" dx="1.4750" dy="0.6000" layer="1"/>- <smd name="3" x="0.9375" y="-0.0000" dx="1.4750" dy="0.6000" layer="1"/>+<package name="SOT-23">+ <description>3 pads, 3.4 x 2.5 mm. SOT, 3 Pin</description>+ <smd name="1" x="-0.9375" y="0.9500" dx="1.4750" dy="0.6000" layer="1" roundness="50"/>+ <smd name="2" x="-0.9375" y="-0.9500" dx="1.4750" dy="0.6000" layer="1" roundness="50"/>+ <smd name="3" x="0.9375" y="-0.0000" dx="1.4750" dy="0.6000" layer="1" roundness="50"/>+ <polygon width="0.1200" layer="21">+ <vertex x="-1.3000" y="0.3800"/>+ <vertex x="-1.0600" y="0.0500"/>+ <vertex x="-1.5400" y="0.0500"/>+ </polygon>+ <polygon width="0.1000" layer="51">+ <vertex x="-0.3250" y="1.4500"/>+ <vertex x="0.6500" y="1.4500"/>+ <vertex x="0.6500" y="-1.4500"/>+ <vertex x="-0.6500" y="-1.4500"/>+ <vertex x="-0.6500" y="1.1250"/>+ </polygon> <wire x1="-0.7600" y1="1.5600" x2="0.7600" y2="1.5600" width="0.1200" layer="21"/> <wire x1="-0.7600" y1="1.5100" x2="-0.7600" y2="1.5600" width="0.1200" layer="21"/> <wire x1="-0.7600" y1="-0.3900" x2="-0.7600" y2="0.3900" width="0.1200" layer="21"/>@@ -70,19 +82,20 @@ </packages> <symbols> <symbol name="TL431DBZ">+ <description>Shunt Regulator, SOT-23</description> <wire x1="-1.2700" y1="0.0000" x2="0.0000" y2="0.0000" width="0.1524" layer="94"/> <wire x1="0.0000" y1="0.0000" x2="1.2700" y2="0.0000" width="0.1524" layer="94"/> <wire x1="-0.7620" y1="-0.7620" x2="-0.7620" y2="0.7620" width="0.1524" layer="94"/> <wire x1="-0.7620" y1="0.7620" x2="0.7620" y2="0.0000" width="0.1524" layer="94"/> <wire x1="0.7620" y1="0.0000" x2="-0.7620" y2="-0.7620" width="0.1524" layer="94"/>- <wire x1="0.2540" y1="-0.7620" x2="0.7620" y2="-0.7620" width="0.1524" layer="94"/>- <wire x1="0.7620" y1="-0.7620" x2="0.7620" y2="0.7620" width="0.1524" layer="94"/>- <wire x1="0.7620" y1="0.7620" x2="0.7620" y2="0.7620" width="0.1524" layer="94"/>+ <wire x1="0.2540" y1="-0.7620" x2="0.7620" y2="-0.7620" width="0.2540" layer="94"/>+ <wire x1="0.7620" y1="-0.7620" x2="0.7620" y2="0.7620" width="0.2540" layer="94"/>+ <wire x1="0.7620" y1="0.7620" x2="0.7620" y2="0.7620" width="0.2540" layer="94"/> <text x="0" y="10" size="1.27" layer="95" align="bottom-center">>NAME</text> <text x="0" y="-10" size="1.27" layer="96" align="top-center">>VALUE</text>- <pin name="K" x="2.54" y="0" length="short" direction="pas" rot="R180"/>- <pin name="REF" x="0" y="2.54" length="short" direction="pas" rot="R270"/>- <pin name="A" x="-2.54" y="0" length="short" direction="pas"/>+ <pin name="K" x="2.54" y="0" length="short" direction="pas" rot="R180" visible="pad"/>+ <pin name="REF" x="0" y="2.54" length="short" direction="pas" rot="R270" visible="pad"/>+ <pin name="A" x="-2.54" y="0" length="short" direction="pas" visible="pad"/> </symbol> </symbols> <devicesets>@@ -92,13 +105,20 @@ <gate name="G$1" symbol="TL431DBZ" x="0" y="0"/> </gates> <devices>- <device name="" package="TL431DBZ">+ <device name="" package="SOT-23"> <connects> <connect gate="G$1" pin="K" pad="1"/> <connect gate="G$1" pin="REF" pad="2"/> <connect gate="G$1" pin="A" pad="3"/> </connects>- <technologies><technology name=""/></technologies>+ <technologies>+ <technology name="">+ <attribute name="MPN" value="TL431" constant="no"/>+ <attribute name="MANUFACTURER" value="Texas Instruments" constant="no"/>+ <attribute name="DATASHEET" value="https://www.ti.com/lit/ds/symlink/tl431.pdf" constant="no"/>+ <attribute name="ADOM_WIKI" value="https://wiki.adom.inc/adom/tl431" constant="no"/>+ </technology>+ </technologies> </device> </devices> </deviceset>