Silicon Protection Arrays
SCR Diode Array for ESD and Transient Overvoltage Protection
RoHS
GREEN
Pb
SP725 Lead-Free/Green Series
Description
5IFꢀ41ꢎꢆꢌꢀJTꢀBOꢀBSSBZꢀPGꢀ4$3ꢏ%JPEFꢀCJQPMBSꢀTUSVDUVSFTꢀGPSꢀ
&4%ꢀBOEꢀPWFSWPMUBHFꢀQSPUFDUJPOꢀPGꢀTFOTJUJWFꢀJOQVUꢀDJSDVJUTꢈꢀ
5IFꢀ41ꢎꢆꢌꢀIBTꢀꢆꢀQSPUFDUJPOꢀ4$3ꢏ%JPEFꢀEFWJDFꢀTUSVDUVSFTꢀ
QFSꢀJOQVUꢈꢀ5IFSFꢀBSFꢀBꢀUPUBMꢀPGꢀꢅꢀBWBJMBCMFꢀJOQVUTꢀUIBUꢀDBOꢀCFꢀ
VTFEꢀUPꢀQSPUFDUꢀVQꢀUPꢀꢅꢀFYUFSOBMꢀTJHOBMꢀPSꢀCVTꢀMJOFTꢈꢀ0WFSꢁ
WPMUBHFꢀQSPUFDUJPOꢀJTꢀGSPNꢀUIFꢀ*/ꢀꢊ1JOTꢀꢃꢀꢁꢀꢅꢋꢀUPꢀ7ꢐꢀPSꢀ7ꢁꢈ
5IFꢀ4$3ꢀTUSVDUVSFTꢀBSFꢀEFTJHOFEꢀGPSꢀGBTUꢀUSJHHFSJOHꢀBUꢀBꢀ
UISFTIPMEꢀPGꢀPOFꢀꢐ7#&ꢀEJPEFꢀUISFTIPMEꢀBCPWFꢀ7ꢐꢀꢊ1JOꢀꢌꢇꢂꢋꢀ
PSꢀPOFꢀo7#&ꢀEJPEFꢀUISFTIPMEꢀCFMPXꢀ7ꢁꢀꢊ1JOꢀ ꢇꢉꢋꢈꢀ'SPNꢀBOꢀ
*/ꢀJOQVUꢇꢀBꢀDMBNQꢀUPꢀ7ꢐꢀJTꢀBDUJWBUFEꢀJGꢀBꢀUSBOTJFOUꢀQVMTFꢀ
DBVTFTꢀUIFꢀJOQVUꢀUPꢀCFꢀJODSFBTFEꢀUPꢀBꢀWPMUBHFꢀMFWFMꢀHSFBUFSꢀ
UIBOꢀPOFꢀ7#&ꢀBCPWFꢀ7ꢐꢈꢀ"ꢀTJNJMBSꢀDMBNQꢀUPꢀ7ꢁꢀJTꢀBDUJWBUFEꢀJGꢀ
BꢀOFHBUJWFꢀQVMTFꢇꢀPOFꢀ7#&ꢀMFTTꢀUIBOꢀ7ꢁꢇꢀJTꢀBQQMJFEꢀUPꢀBOꢀ*/ꢀ
JOQVUꢈ
Pinout
V-
8
7
6
5
In
In
In
In
1
2
3FGFSꢀUPꢀ'JHꢀꢃꢀBOEꢀ5BCMFꢀꢃꢀGPSꢀGVSUIFSꢀEFUBJMTꢈꢀ3FGFSꢀUPꢀ
"QQMJDBUJPOꢀ/PUFꢀ"/ꢑꢍꢄꢅꢀBOEꢀ"/ꢑꢂꢃꢆꢀGPSꢀGVSUIFSꢀEFUBJMꢈ
SP725
(SOIC)
V-
3
4
V+
V+
Features
tꢀ &4%ꢀ*OUFSGBDFꢀQFSꢀ)#.ꢀ4UBOEBSET
ꢀ ꢀ ꢁꢀ*&$ꢀꢂꢃꢄꢄꢄꢁꢅꢁꢆꢇꢀ%JSFDUꢀ%JTDIBSHFꢀꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈ ꢉL7ꢀꢊ-FWFMꢀꢅꢋ
ꢀ ꢀ ꢁꢀ*&$ꢀꢂꢃꢄꢄꢄꢁꢅꢁꢆꢇꢀ"JSꢀ%JTDIBSHFꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢃꢌL7ꢀꢊ-FWFMꢀꢅꢋ
ꢀ ꢀ ꢁꢀ.* ꢁ45%ꢁꢍꢄꢃꢌꢈꢎꢀꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢆꢌL7
tꢀ 1FBLꢀ$VSSFOUꢀ$BQBCJMJUZ
Functional Block Diagram
V+
5, 6
ꢀ ꢀ ꢁꢀ*&$ꢀꢂꢃꢄꢄꢄꢁꢅꢁꢌꢀꢉꢏꢆꢄꢀTꢀ1FBLꢀ1VMTFꢀ$VSSFOUꢈꢈꢈꢈꢈ ꢀꢃꢅꢀ"
ꢀ ꢀ ꢁꢀ4JOHMFꢀ5SBOTJFOUꢀ1VMTFꢇꢀꢃꢄꢄꢀTꢀ1VMTFꢀ8JEUIꢀꢈꢈꢈꢈꢈꢈ ꢀꢉꢀ"
tꢀ %FTJHOFEꢀUPꢀ1SPWJEFꢀ0WFSꢁ7PMUBHFꢀ1SPUFDUJPO
ꢀ ꢀ ꢁꢀ4JOHMFꢁ&OEFEꢀ7PMUBHFꢀ3BOHFꢀUPꢀꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈ ꢐꢍꢄ7
ꢀ ꢀ ꢁꢀ%JGGFSFOUJBMꢀ7PMUBHFꢀ3BOHFꢀUPꢀꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈ ꢃꢌ7
tꢀ 'BTUꢀ4XJUDIJOHꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢆOTꢀ3JTFUJNF
tꢀ -PXꢀ*OQVUꢀ-FBLBHFTꢀꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢌꢀO"ꢀBUꢀꢆꢌꢀ$ꢀ5ZQJDBM
tꢀ -PXꢀ*OQVUꢀ$BQBDJUBODFꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢌꢀQ'ꢀ5ZQJDBM
tꢀ "Oꢀ"SSBZꢀPGꢀꢅꢀ4$3ꢏ%JPEFꢀ1BJST
IN
1
2
IN
IN
3, 4
V-
7, 8
tꢀ 0QFSBUJOHꢀ5FNQFSBUVSFꢀ3BOHFꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢈꢁꢅꢄꢀ$ꢀUPꢀꢃꢄꢌꢀ$
Applications
tꢀ .JDSPQSPDFTTPSꢏ-PHJDꢀ
*OQVUꢀ1SPUFDUJPO
tꢀ "OBMPHꢀ%FWJDFꢀ*OQVUꢀ
1SPUFDUJPO
tꢀ %BUBꢀ#VTꢀ1SPUFDUJPO
tꢀ 7PMUBHFꢀ$MBNQ
67
Electronics Designers Guide
www.littelfuse.com
©2008 Littelfuse
SP725 Lead-Free/Green Series
Specifications are subject to change without notice.