Inductors Chip Inductors &KLS,QGXFWRUV -DSDQ &KLS )( '&$% 6HULHV 7\SH 1' & (0805) (1008) ) ( (0402) (0603) $ % (1210) (1812) 1RQZRXQGDQGZLUHZRXQGW\SHFKLSLQGXFWRUVIRUDXWRPDWLFDQGKLJKGHQVLW\PRXQWLQJ ,QGXVWULDO3URSHUW\3DWHQWV SHQGLQJ Q Features O O O O +LJK4 *RRGIRUPRXQWLQJ :LGHDYDLODELOLW\UDQJH Q+WR + 6WDEOH/YDOXHLQDQ\PRXQWLQJGLUHFWLRQ 1RQZLQGLQJW\SH Q Recommended Applications O 3RUWDEOHWHOHSKRQHV:LUHOHVV&RPPXQLFDWLRQHTXLSPHQW :/$1%7 3'$&DPFRUGHU'6&9DULRXVPRGXOH+,&799753&SHULSKHUDOV QExplanation of Part Numbers Example of Part Number Build: 1 E * Q Min. - Please check the each specification 3 4 5 6 7 8 9 10 L J F A 2 2 1 J F Nominal Inductance Type Product Code Code Item Laser-Cut Wire Wound Types F 1005 (0402) E 1608 (0603) D 2012 (0805) C 2520 (1008) A 3225 (1210) B 4532 (1812) Non Magnetic Core RF RE ND NC NA Ð NonMagneticCore(HighQ) QF Ð Ð Ð Ð Ð General Use Ð Ð Ð FC FA FB Types Styles ** SRF (Self-Resonant Frequency) 2 Magnetic Shield Ð Ð Ð Ð SA Ð High Current PF PE Ð PC PA PB High Current, very low DCR Ð Ð Ð Ð EA Ð 11 Tolerance Packaging Optional*** Value Code Value 2N2 --> 2.2 22N --> 22 R22 --> 0.22 nH nH uH 2R2 --> 2.2 220 --> 22 uH uH 221 --> 220 uH 102 --> 1000 uH Z: D: E: G: * * * * 0.2 0.3 0.5 2 nH nH nH % A: J: K: M: * * * * 3 5 10 20 % % % % F Tape & Reel ***Note: Part Number position #11 is an optional factory designation. Size unit: mm (inch) Rev. 10/04 Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors QInductance, Size Guide O +LJK)UHTXHQF\(TXLSPHQW 8&9 Laser Cut 0'7 6+ $ %&' ( $ %&' ( '%)* '%) +, ! "# " $ %&' ( "# " '%) +, ! ./ ./ 3 :3; "# . / ± ± ± ± ± ± ± ± ./ ./ . "# - . ./ ./ - . O General Equipment 0'7 # $ # $( # ( # !( $ <' ,=2 &6+ 0 ! # 1 # !1 0'7 99 ') 8&9 6+ $ %&' ( $ %&' ( 3 :3; . # . '%) +, $ %&' ( 5 '%) +, 3, ( 4'4& General Use '%) +, . "# . General Use # . ± ± ± ± ± ± ± . General Use 0)'2 . . 5 Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors 1RQ0DJQHWLF&RUH7\SHV5)5(1'1&1$ QType 1005(0402)RF ORecommended Land Pattern in mm (not to scale) 0.5 0.5 to 0.6 ODimensions in mm (not to scale) 0.2 1.0 0.2 0.5 0.5 to 0.6 1.5 to 1.7 QStandard Packing Quantity O SFV5HHO QExamples Inductance @3 3DUW1R Q+ (/-5)1'=) (/-5)1'=) (/-5)1'=) (/-5)1'=) (/-5)1'=) (/-5)1'=) (/-5)1'=) (/-5)1'=) (/-5)1'=) (/-5)1'=) (/-5)1-=) (/-5)1-=) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)5-*) (/-5)1'=) (/-5)1'=) (/-5)1'=) (/-5)1'=) (/-5)1-=) (/-5)1-=) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) (/-5)1-*) 7ROHUDQFH Q+ Q+ 4 PLQ /4 7HVW)UHT 0+] Q+ Q+ 65)@1 0+] PLQ '&5@2 : PD[ '&&XUUHQW P$ PD[ @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH @ 3 Lead-Free P/Ns have an "FB" suffix, rather than 'F2' Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors QType 1608(0603)RE ORecommended Land Pattern in mm (not to scale) 0.8 0.7 to 0.9 ODimensions in mm (not to scale) 0.3 0.3 1.6 0.8 0.8 to 1.0 2.0 to 2.6 QStandard Packing Quantity O SFV5HHO QExamples 3DUW1R Inductance @3 Q+ (/-5(1'=) (/-5(1'=) (/-5(1'=) (/-5(1'=) (/-5(1'=) (/-5(1'=) (/-5(1'=) (/-5(1-=) (/-5(1-=) (/-5(1-=) (/-5(1-=) (/-5(1-=) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(5-*) (/-5(5-*) (/-5(5-*) (/-5(5-*) (/-5(5-*) (/-5(1'=) (/-5(1-=) (/-5(1-=) (/-5(1-=) (/-5(1-=) (/-5(1-=) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) (/-5(1-*) 7ROHUDQFH 4 PLQ /4 7HVW)UHT 0+] Q+ Q+ Q+ Q+ 65)@1 0+] PLQ '&5@2 : PD[ '&&XUUHQW P$ PD[ @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH @ 3 Lead-Free P/Ns have an "FA" suffix rather than 'F2' or 'F3' Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors QType 2012(0805)ND ORecommended Land Pattern in mm (not to scale) 1.25 0.9 to 1.3 1.0 1.25 ODimensions in mm (not to scale) (1.2) 1.0 to 1.2 3.0 to 3.8 0.4 2.0 QStandard Packing Quantity O SFV5HHO Q Examples ,QGXFWDQFH 3DUW1R Q+ (/-1'1.) (/-1'1.) (/-1'1.) (/-1'1.) (/-1'1.) (/-1'1.) (/-1'1-.) (/-1'1-.) (/-1'1-.) 7ROHUDQFH 4 PLQ /4 7HVW)UHT 0+] 4 7\SLFDO 0+] 65)@1 0+] PLQ '&5@2 : PD[ '&&XUUHQW P$ PD[ (/-1'1-.) (/-1'1-.) (/-1'1-.) (/-1'5-.) (/-1'5-.) (/-1'5-.) (/-1'5-.) (/-1'5-.) ¥ (/-1'5-.) ¥ ¥ ¥ (/-1'5-.) (/-1'5-.) ¥ (/-1'5-.) ¥ (/-1'5-.) ¥ ¥ ¥ (/-1'5-.) (/-1'5-.) (/-1'5-.) @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors QType 2520(1008)NC ORecommended Land Pattern in mm (not to scale) ODimensions in mm (not to scale) 1.2 to 1.6 1.2 2.0 Marking 2.5 1.6 1.4 to 1.5 3.5 to 4.0 0.4 QStandard Packing Quantity O SFV5HHO QExamples ,QGXFWDQFH 3DUW1R 7ROHUDQFH 4 PLQ /4 7HVW )UHT 0+] 65)@1 0+] PLQ '&5@2 : PD[ '&&XUUHQW P$ PD[ (/-1&1.) Q+ (/-1&1.) (/-1&1.) (/-1&1.) (/-1&1.) (/-1&1.) (/-1&1.-) (/-1&1.-) (/-1&1.-) (/-1&1.-) (/-1&1.-) (/-1&1.-) (/-1&5.-) (/-1&5.-) (/-1&5.-) (/-1&5.-) (/-1&5.-) (/-1&5.-) (/-1&5.-) (/-1&5.-) (/-1&5.-) (/-1&5.-) (/-1&5.-) (/-1&5.-) @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors QType 3225(1210)NA ORecommended Land Pattern in mm (not to scale) ODimensions in mm (not to scale) 1.9 to 2.4 1.9 2.5 Marking 2.2 3.2 1.6 to 2.0 4.0 to 4.6 0.6 QStandard Packing Quantity O SFV5HHO QExamples 3DUW1R ,QGXFWDQFH + (/-1$10) (/-1$10) (/-1$10) (/-1$10) (/-1$50) (/-1$50) (/-1$50) (/-1$50) (/-1$5.) (/-1$5.) (/-1$5.) (/-1$5.) (/-1$5.) (/-1$5.) (/-1$5.) 4 )UHT 0+] 7ROHUDQFH PLQ )UHT 0+] 65)@1 0+] PLQ '&5@2 : PD[ '&&XUUHQW P$ PD[ (/-1$5.) (/-1$5-) (/-1$5-) (/-1$5-) (/-1$5-) (/-1$5-) (/-1$5-) (/-1$5-) (/-1$5-) (/-1$5-) (/-1$5-) (/-1$5-) (/-1$5-) @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors 7\SH1RQ:RXQG +LJK4 4) QType 1005(0402)QF ORecommended Land Pattern in mm (not to scale) 0.5 0.5 to 0.6 ODimensions in mm (not to scale) 0.2 0.2 1.0 0.5 0.5 to 0.6 1.5 to 1.7 QStandard Packing Quantity O SFV5HHO QExamples 4 ,QGXFWDQFH 3DUW1R + (/-4)1'=) (/-4)1'=) (/-4)1'=) (/-4)1'=) (/-4)1'=) (/-4)1'=) (/-4)1'=) (/-4)1'=) (/-4)1'=) (/-4)1'=) (/-4)1-=) 7ROHUDQFH )UHT 0+] 0+] 0+] PLQ W\S 65)@1 0+] PLQ '&5@2 : PD[ '&&XUUHQW P$ PD[ Q+ Q+ (/-4)1-=) (/-4)1-*) (/-4)1-*) (/-4)1-*) (/-4)1-*) (/-4)1-*) (/-4)1-*) (/-4)1-*) (/-4)1-*) @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors 1RUPDO7\SHV)&)$)% QType 2520(1008)FC ORecommended Land Pattern in mm (not to scale) ODimensions in mm (not to scale) 1.2 to 1.6 1.2 2.0 Marking 2.5 1.6 1.4 to 1.5 3.5 to 4.0 0.4 QStandard Packing Quantity O SFV5HHO QExamples 3DUW1R (/-)&50.) (/-)&50.) (/-)&50.) (/-)&50.) (/-)&50.) (/-)&50.) (/-)&50.) (/-)&50.) (/-)&5.-) (/-)&5.-) (/-)&5.-) (/-)&5.-) (/-)&5.-) (/-)&5.-) (/-)&5.-) (/-)&5.-) (/-)&5.-) (/-)&5.-) (/-)&5.-) (/-)&5.-) (/-)&.-) (/-)&.-) (/-)&.-) (/-)&.-) (/-)&.-) (/-)&.-) (/-)&.-) (/-)&.-) (/-)&.-) (/-)&.-) (/-)&.-) (/-)&.-) (/-)&.-) ,QGXFWDQFH + 7ROHUDQFH 4 PLQ /4 7HVW )UHT 0+] 65)@1 0+] PLQ '&5@2 : PD[ '&&XUUHQW P$ PD[ @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors QType 3225(1210)FA ODimensions in mm (not to scale) ORecommended Land Pattern in mm (not to scale) 1.9 to 2.4 1.9 2.5 Marking 2.2 3.2 1.6 to 2.0 4.0 to 4.6 0.6 QStandard Packing Quantity O SFV5HHO QExamples 3DUW1R (/-)$50.) (/-)$50.) (/-)$50.) (/-)$50.) (/-)$50.) (/-)$50.) (/-)$50.) (/-)$50.) (/-)$5.-) (/-)$5.-) (/-)$5.-) (/-)$5.-) (/-)$5.-) (/-)$5.-) (/-)$5.-) (/-)$5.-) (/-)$5.-) (/-)$5.-) (/-)$5.-) (/-)$5.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) (/-)$.-) ,QGXFWDQFH + 7ROHUDQFH 4 PLQ /4 7HVW )UHT 0+] 65)@1 0+] PLQ '&5@2 : PD[ '&&XUUHQW P$ PD[ @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors QType 4532(1812)FB ORecommended Land Pattern in mm (not to scale) ODimensions in mm (not to scale) 2.0 to 3.0 2.0 3.2 Marking 2.4 to 2.6 4.5 3.2 5.5 to 6.0 O SFV5HHO 0.6 QExamples 4 ,QGXFWDQFH 3DUW1R + (/-)%50) (/-)%50) (/-)%50) (/-)%50) (/-)%50) (/-)%50) (/-)%50) (/-)%50) (/-)%50.) (/-)%50.) (/-)%50.) (/-)%50.) (/-)%50.) (/-)%50.) (/-)%50.) (/-)%50.) (/-)%50.) (/-)%50.) (/-)%50.) (/-)%50.) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) (/-)%.-) QStandard Packing Quantity )UHT 0+] 7ROHUDQFH PLQ )UHT 0+] 65)@1 0+] PLQ '&5@2 : PD[ '&&XUUHQW P$ PD[ @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors 0DJQHWLF6KLHOGHG7\SH6$ QType 3225(1210)SA ORecommended Land Pattern in mm (not to scale) ODimensions in mm (not to scale) 1.9 to 2.4 1.9 2.5 Marking 3.2 2.2 1.6 to 2.0 4.0 to 4.6 0.6 QStandard Packing Quantity O SFVUHHO QExamples 4 ,QGXFWDQFH 3DUW1R )UHT 0+] 7ROHUDQFH PLQ )UHT 0+] 65)@1 0+] PLQ '&5@2 : PD[ '&&XUUHQW P$ PD[ (/-6$.) + (/-6$.) (/-6$.) (/-6$.) (/-6$.) (/-6$.) (/-6$.) (/-6$.) (/-6$.) (/-6$.) (/-6$.) (/-6$.) (/-6$.) (/-6$.) (/-6$.) (/-6$.) (/-6$.) (/-6$.) @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors +LJK3RZHU7\SHV3)3(3&3$3% QType 1005(0402)PF ORecommended Land Pattern in mm (not to scale) 0.5 0.5 to 0.6 ODimensions in mm (not to scale) 0.2 1.0 0.2 0.5 0.5 to 0.6 1.5 to 1.7 QStandard Packing Quantity O SFV5HHO QExamples ,QGXFWDQFH @3 3DUW1R (/-3)1') Q+ (/-3)1') (/-3)1') (/-3)1') (/-3)1') (/-3)1') (/-3)1-) (/-3)1-) (/-3)1-) 7ROHUDQFH 4 PLQ /4 7HVW )UHT 0+] Q+ 65) @ 0+] PLQ '&5 @ : PD[ '&&XUUHQW P$ PD[ @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH @ 3 Lead-Free P/Ns have an "FB" suffix, rather than 'F' Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors QType 1608(0603)PE ORecommended Land Pattern in mm (not to scale) 0.8 0.7 to 0.9 ODimensions in mm (not to scale) 0.3 1.6 0.3 0.8 0.8 to 1.0 2.0 to 2.6 QStandard Packing Quantity O SFV5HHO QExamples @3 ,QGXFWDQFH 3DUW1R Q+ (/-3(1.) 7ROHUDQFH 4 PLQ /4 7HVW )UHT 0+] 65)@1 0+] PLQ '&5@2 : PD[ '&&XUUHQW P$ PD[ (/-3(1.) (/-3(1.) (/-3(1.) (/-3(1.) (/-3(1.) (/-3(1.) (/-3(1.) (/-3(1.) (/-3(1.) (/-3(1.) (/-3(1.) (/-3(1.) @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH @ 3 Lead-Free P/Ns have an "FA" suffix, rather than 'F' Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors QType 2520(1008)PC ORecommended Land Pattern in mm (not to scale) ODimensions in mm (not to scale) 1.2 to 1.6 1.2 2.0 Marking 2.5 1.4 to 1.5 1.6 3.5 to 4.0 0.4 QStandard Packing Quantity O SFV5HHO Q Examples 3DUW1R ,QGXFWDQFH + 4 PLQ 7ROHUDQFH /4 7HVW )UHT 0+] 65)@1 0+] PLQ '&5@2 : PD[ '&&XUUHQW P$ PD[ (/-3&50) (/-3&50) (/-3&50) (/-3&50) (/-3&50) (/-3&5.) (/-3&.) (/-3&.) (/-3&.) (/-3&.) (/-3&.) @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors QType 3225(1210)PA ORecommended Land Pattern in mm (not to scale) ODimensions in mm (not to scale) 1.9 to 2.4 1.9 2.5 Marking 3.2 2.2 1.6 to 2.0 4.0 to 4.6 0.6 QStandard Packing Quantity O SFV5HHO Q Examples 3DUW1R ,QGXFWDQFH (/-3$50) + (/-3$50) (/-3$50) (/-3$50) (/-3$50) 7ROHUDQFH 4 PLQ /4 7HVW )UHT 0+] 65) @ 0+] PLQ '&5 @ : PD[ '&&XUUHQW P$ PD[ (/-3$50) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) (/-3$.) @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors QType 4532(1812)PB ORecommended Land Pattern in mm (not to scale) ODimensions in mm (not to scale) 2.0 to 3.0 2.0 3.2 Marking 4.5 3.2 2.4 to 2.6 5.5 to 6.0 0.6 QStandard Packing Quantity O SFV5HHO QExamples ,QGXFWDQFH 3DUW1R + 7ROHUDQFH 4 PLQ /4 7HVW )UHT 0+] 65)@1 0+] PLQ '&5@2 : PD[ '&&XUUHQW P$ PD[ (/-3%.) (/-3%.) (/-3%.) (/-3%.) (/-3%.) (/-3%.) (/-3%.) (/-3%.) (/-3%.) (/-3%.) (/-3%.) (/-3%.) (/-3%.) (/-3%.) (/-3%.) (/-3%.) (/-3%.) @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation. Inductors Chip Inductors /RZ'&UHVLVWDQFH7\SH($ QType 3225(1210)EA ORecommended Land Pattern in mm (not to scale) ODimensions in mm (not to scale) 1.9 to 2.4 1.9 2.5 Marking 3.2 2.2 1.6 to 2.0 4.0 to 4.6 0.6 QStandard Packing Quantity O SFV5HHO QExamples 3DUW1R ,QGXFWDQFH (/-($50) + (/-($50) (/-($50) (/-($50) (/-($50) (/-($50) (/-($.) (/-($.) (/-($.) (/-($.) (/-($.) (/-($.) (/-($.) (/-($.) (/-($.) (/-($.) 7ROHUDQFH 4 PLQ /4 7HVW )UHT 0+] 65) @ 0+] PLQ '&5 @ : PD[ '&&XUUHQW P$ PD[ @6HOI5HVRQDQW)UHTXHQF\@'&5HVLVWDQFH Design and specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please contact us immediately for technical consultation.