0
登录后你可以
  • 下载海量资料
  • 学习在线课程
  • 观看技术视频
  • 写文章/发帖/加入社区
创作中心
发布
  • 发文章

  • 发资料

  • 发帖

  • 提问

  • 发视频

创作活动
81N17-H-AB3-I-R

81N17-H-AB3-I-R

  • 厂商:

    UTC(友顺)

  • 封装:

  • 描述:

    81N17-H-AB3-I-R - VOLTAGE DETECTORS WITH BUILT-IN DELAY TIME - Unisonic Technologies

  • 数据手册
  • 价格&库存
81N17-H-AB3-I-R 数据手册
UNISONIC TECHNOLOGIES CO., LTD 81CXXX/81NXXX VOLTAGE DETECTORS WITH BUILT-IN DELAY TIME DESCRIPTION The UTC 81CXXX and 81NXXX series are good performance voltage detector and manufactured by CMOS technologies with highly accurate, low power consumption. A delay circuit is built-in to each detector, therefore, peripherals are unnecessary and high density mounting is possible. Detect voltage is extremely accurate with minimal temperature drift. Both CMOS and N-channel open drain output configurations are available. 3 CMOS IC 1 1 2 SOT-23 SOT-89 1 FEATURES *Highly Accurate : Detect voltage ± 2% *Built-In Delay time : 1ms ~ 50ms, 50ms ~ 200ms, 200ms ~ 400ms, *Detect Voltage Temperature Characteristics: TYP± 100ppm/℃ *Wide Operating Voltage Range : 0.7V ~ 10.0V *Low Current Consumption : TYP 1.0 µA (VIN=2.0V) TO-92 *Pb-free plating product number: 81CXXXL/81NXXXL ORDERING INFORMATION CMOS: Order Number Normal Lead Free Plating 81Cxx-①-AB3-E-R 81CxxL-①-AB3-E-R 81Cxx-①-AE3-3-R 81CxxL-①-AE3-3-R 81Cxx-①-AE3-5-R 81CxxL-①-AE3-5-R 81Cxx-①-T92-D-B 81CxxL-①-T92-D-B 81Cxx-①-T92-E-B 81CxxL-①-T92-E-B 81Cxx-①-T92-D-K 81CxxL-①-T92-D-K 81Cxx-①-T92-E-K 81CxxL-①-T92-E-K N-Channel: Order Number ①:Delay Time Normal Lead Free Plating Duration Code 81Nxx-①-AB3-E-R 81NxxL-①-AB3-E-R 81Nxx-①-AE3-3-R 81NxxL-①-AE3-3-R 81Nxx-①-AE3-5-R 81NxxL-①-AE3-5-R H 1 ~ 50 ms J 81Nxx-①-T92-D-B 81NxxL-①-T92-D-B 50 ~ 200 ms 81Nxx-①-T92-E-B 81NxxL-①-T92-E-B 200 ~ 400 ms K 81Nxx-①-T92-D-K 81NxxL-①-T92-D-K 81Nxx-①-T92-E-K 81NxxL-①-T92-E-K Note: 1. Pin assignment: I:Vin O:Vout G:Vss 2.xx: Output Voltage, refer to Marking Information. Package SOT-89 SOT-23 SOT-23 TO-92 TO-92 TO-92 TO-92 Pin Assign. 1 2 3 O I G OG I GO I I GO O I G I GO O I G Packing Tape Reel Tape Reel Tape Reel Tape Box Tape Box Bulk Bulk ①:Delay Time Duration Code Package SOT-89 SOT-23 SOT-23 TO-92 TO-92 TO-92 TO-92 Pin Assign. 1 2 3 O I G OG I GO I I GO O I G I GO O I G Packing Tape Reel Tape Reel Tape Reel Tape Box Tape Box Bulk Bulk 1 ~ 50 ms 50 ~ 200 ms 200 ~ 400 ms P Q R www.unisonic.com.tw Copyright © 2005 Unisonic Technologies Co., Ltd 1 of 15 QW-R502-039,I 81CXXX/81NXXX ORDERING INFORMATION(Cont.) 8 1C x x L - 1 - A B 3 - x -R (1)Packing Type (2)Pin Code (3)Package Type (4)Delay Time (5)Lead Plating (6)Output Voltage Code (7)Output Configuration CMOS IC ( 1) R: Tape Reel, B: Tape Box, K: Bulk (2) refer to Pin Assignment (3) AB3: SOT-89, AE3: SOT-23, T92: TO-92 (4) 1 : refer to Delay Time (5)L: Lead Free Plating, Blank: Pb/Sn (6) xx: refer to Marking Information (7) C: CMOS, N: N-Cannel MARKING INFORMATION PACKAGE 10:1.0V 11:1.1V 12:1.2V 13:1.3V 14:1.4V 15:1.5V 16:1.6V 17:1.7V 18:1.8V 19:1.9V 20:2.0V 21:2.1V 22:2.2V 23:2.3V 24:2.4V 25:2.5V VOLTAGE CODE 26:2.6V 27:2.7V 28:2.8V 29:2.9V 30:3.0V 31:3.1V 32:3.2V 33:3.3V 34:3.4V 35:3.5V 36:3.6V 37:3.7V 38:3.8V 39:3.9V MARKING SOT-89 TO-92 40:4.0V 41:4.1V 42:4.2V 43:4.3V 44:4.4V 45:4.5V 46:4.6V 47:4.7V 48:4.8V 49:4.9V 50:5.0V Date Code C:CMOS N:N-Channel 81XXXX 1 2 3 Lead Plating Voltage Code C:CMOS N:N-Channel UTC 81XXXX Lead Plating Voltage Code Date Code Pin Code 1 2 3 PACKAGE INTEGER* CODE DECIMAL** CODE 1. 1 .0 A 2. 2 .1 B 3. 3 .2 C 4. 4 .3 D 5. 5 .4 E SOT-23 Voltage Code 6. 6 .5 F .6 G .7 H .8 J .9 K * Represents the integer of the Detect Voltage ** Represents the decimal number of the Detect Voltage MARKING 3 Month Lead Plating Pin Code 2 1 EXAMPLE: 81C27P 3 2HA L 2 1 Month (January ) L:Pb-free Pin Code Voltage Code 81N27H 3 2HE 2 L 1 Month (May) L:Pb-free Pin Code Voltage Code UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 15 QW-R502-039,I 81CXXX/81NXXX BLOCK DIAGRAM VIN CMOS IC Delay Circuit VREF VOUT Vss CMOS Output VIN VOUT Delay Circuit VREF Vss N-channel Open Drain Output UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 15 QW-R502-039,I 81CXXX/81NXXX ABSOLUTE MAXIMUM RATINGS (Ta=25℃) PARAMETER Input Voltage Output Current SYMBOL VIN IOUT CMOS IC RATINGS UNIT 12 V 50 mA CMOS VSS-0.3 ~ VIN+0.3 Output Voltage VOUT V N-Ch open drain VSS-0.3 ~ 9 SOT-23 150 Power Dissipation PD mW SOT-89 500 TO-92 300 ℃ Operating Temperature TOPR -30 ~ +80 ℃ Storage Temperature TSTG -40 ~ +125 Note Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. THERMAL DATA PARAMETER Thermal Resistance Junction-Case SOT-23 SOT-89 TO-92 SYMBOL θJC RATINGS 200 100 45 UNIT ℃/W ELECTRICAL CHARACTERISTICS (Ta=25℃) Detection voltage (1.0V ~ 1.9V) PARAMETER SYMBOL CIRCUIT Detect Voltage Hysteresis Range Operating Voltage Supply Current VDF VHYS VIN ISS 1 1 1 2 3 Output Current IOUT 4 VDF Temperature Characteristics Transient Delay Time (VDR VOUT inversion) ∆VDF ∆TOPR×VDF tDLY * 5 VIN changes from 0.6V ~ 10V 50 VDF=1.6V ~ 6.0V VIN=1.5V VIN=5.0 N-ch VDS=0.5V, VIN =1.0V P-ch VDS=2.1V, VIN=8.0V (CMOS output) TEST CONDITIONS MIN VDF (T) X0.98 VDF X0.02 0.7 MAX UNIT VDF (T) VDF (T) V X1.02 VDF VDF V X0.05 X0.08 10.0 V 0.9 2.6 µA 2.0 4.2 µA 2.2 -15.4 ±100 200 mA mA ppm/℃ ms TYP UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 4 of 15 QW-R502-039,I 81CXXX/81NXXX ELECTRICAL CHARACTERISTICS(Cont.) Detection voltage (2.0V ~ 2.9V) PARAMETER SYMBOL CIRCUIT Detect Voltage Hysteresis Range Operating Voltage Supply Current VDF VHYS VIN ISS 1 1 1 2 3 Output Current IOUT 4 VDF Temperature Characteristics Transient Delay Time (VDR VOUT inversion) ∆VDF ∆TOPR×VDF tDLY * 5 VIN changes from 0.6V ~ 10V TEST CONDITIONS 50 VDF=1.6V ~ 6.0V VIN=2.0V VIN=5.0V N-ch VDS=0.5V, VIN =2.0V P-ch VDS=2.1V, VIN=8.0V (CMOS output) TEST CONDITIONS MIN VDF (T) X0.98 VDF X0.02 0.7 TYP CMOS IC MAX UNIT VDF (T) VDF (T) V X1.02 VDF VDF V X0.05 X0.08 10.0 V 1.0 3.0 µA 2.0 4.2 µA 7.9 -15.4 ±100 200 mA mA ppm/℃ ms Detection voltage (3.0V ~ 3.9V) PARAMETER SYMBOL CIRCUIT Detect Voltage Hysteresis Range Operating Voltage Supply Current VDF VHYS VIN ISS 1 1 1 2 3 Output Current IOUT 4 VDF Temperature Characteristics Transient Delay Time (VDR VOUT inversion) ∆VDF ∆TOPR×VDF tDLY * 5 VDF=1.6V ~ 6.0V VIN =3.0V VIN =5.0V N-ch VDS=0.5V, VIN =3.0V P-ch VDS=2.1V, VIN=8.0V (CMOS output) MIN VDF (T) X0.98 VDF X0.02 0.7 MAX UNIT VDF (T) VDF (T) V X1.02 VDF VDF V X0.05 X0.08 10.0 V 1.3 3.4 µA 2.0 4.2 µA 10.1 -15.4 ±100 mA mA ppm/℃ 200 ms TYP VIN changes from 0.6V ~ 10V 50 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 15 QW-R502-039,I 81CXXX/81NXXX ELECTRICAL CHARACTERISTICS(Cont.) Detection voltage (4.0V ~ 4.9V) PARAMETER SYMBOL CIRCUIT Detect Voltage Hysteresis Range Operating Voltage Supply Current VDF VHYS VIN ISS 1 1 1 2 3 Output Current IOUT 4 VDF Temperature Characteristics Transient Delay Time (VDR VOUT inversion) Detection voltage (5.0V) PARAMETER Detect Voltage Hysteresis Range Operating Voltage Supply Current Output Current ∆VDF ∆TOPR×VDF tDLY * 5 VIN changes from 0.6V ~ 10V TEST CONDITIONS 50 VDF=1.6V ~ 6.0V VIN=4.0V VIN=5.0V N-ch VDS=0.5V, VIN=4.0V P-ch VDS=2.1V, VIN=8.0V (CMOS output) TEST CONDITIONS MIN VDF (T) X0.98 VDF X0.02 0.7 CMOS IC MAX UNIT VDF (T) VDF (T) V X1.02 VDF VDF V X0.05 X0.08 10.0 V 1.5 3.8 µA 2.0 4.2 µA 11.5 -15.4 ±100 200 mA mA ppm/℃ ms TYP SYMBOL CIRCUIT VDF VHYS VIN ISS IOUT 1 1 1 2 3 4 VDF=1.6V ~ 6.0V VIN=5.0V N-ch VDS=0.5V, VIN =5.0V P-ch VDS=2.1V, VIN=8.0V (CMOS output) MIN VDF (T) X0.98 VDF X0.02 0.7 MAX UNIT VDF (T) VDF (T) V X1.02 VDF VDF V X0.05 X0.08 10.0 V 2.0 4.2 µA 13.0 mA -15.4 ±100 200 mA ppm/℃ ms TYP VDF ∆VDF Temperature Characteristics ∆TOPR×VDF VIN changes from Transient Delay Time 50 5 tDLY * (VDR VOUT inversion) 0.6V ~ 10V VDF (T): established detect voltage value Release Voltage: VDR = VDF + VHYS * Transient Delay Time: 1ms ~ 50ms & 200ms ~ 400ms versions are also available. Note: The power consumption during power-start to output being stable (release operation) is 2 µA greater than it is after that period (completion of release operation) because of delay circuit through current. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 6 of 15 QW-R502-039,I 81CXXX/81NXXX TEST CIRCUITS 1-1 1-2 100kΩ CMOS IC VIN VIN + V VOUT VSS VIN V + V VIN VOUT VSS V Cmos Output N-channel Open Drain Output 2 A VIN + VIN VOUT VSS 3 VIN VIN + VOUT Vss A + VDS 4 + VDS VIN VIN + VOUT Vss A - 5-1 VIN VIN VOUT Vss Measurement waveform Cmos Output 5-2 100kΩ VIN VIN VOUT Vss Measurement waveform N-channel Open Drain Output UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 7 of 15 QW-R502-039,I 81CXXX/81NXXX TYPICAL PERFORMANCE CHARACTERISTICS (1) AMBIENT TEMPERATURE vs. TRANSIENT DELAY TIME 81C30Q 200 400 CMOS IC 81C30R 320 150 tDLY (msec) tDLY (msec) 100 50 240 160 -30 -10 10 30 50 70 80 -30 -10 10 30 50 70 Ambient Temp., Ta ( ℃) 81C30P 50 Ambient Temp., Ta ( ℃) 40 tDLY (msec) 30 20 10 0 -30 -10 10 30 50 70 Ambient Temp., Ta ( ℃) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 8 of 15 QW-R502-039,I 81CXXX/81NXXX TYPICAL PERFORMANCE CHARACTERISTICS(Cont.) (2) P-CHANNEL DRIVER OUTPUT CURRENT vs. INPUT VOLTAGE 81C27Q 20 18 Output Current, IOUT (mA) CMOS IC 81C33Q 20 Ta=25℃ VDS=2.1V 1.5V 1.0V 0.5V Ta=25℃ VDS=2.1V Output Current, IOUT (mA) 18 16 14 12 10 8 6 4 2 16 14 12 10 8 6 4 2 0 0.0 2.0 4.0 6.0 1.5V 1.0V 0.5V 8.0 10.0 0 0.0 2.0 4.0 6.0 8.0 10.0 Input Voltage, VIN ( V) 81C44Q Ta=25℃ VDS=2.1V 1.5V 1.0V 0.5V Input Voltage, VIN (V) 20 18 Output Current, IOUT (mA) 16 14 12 10 8 6 4 2 0 0.0 2.0 4.0 6.0 8.0 10.0 Input Voltage, VIN ( V) (2) TRANSIENT DELAY TIME vs. INPUT VOLTAGE 81C33Q 230 200 170 Ta=25℃ tD LY (msec) 140 110 80 50 0.0 2.0 4.0 6.0 8.0 10.0 Input Voltage, VIN ( V) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 9 of 15 QW-R502-039,I 81CXXX/81NXXX TYPICAL PERFORMANCE CHARACTERISTICS(Cont.) (3) SUPPLY CURRENT vs. INPUT VOLTAGE CMOS IC 4.0 81N16 4.0 Supply Current, Is s ( μ A) 81N25 Supply Current, Iss ( μA) 3.0 3.0 Ta=80℃ 2.0 25℃ 1.0 2.0 Ta=80℃ 25℃ 1.0 0.0 0 2 4 6 8 10 0.0 0 2 4 6 8 10 Input Voltage, V IN (V) 4.0 S upply Current, Is s ( μ A) Input Voltage, V IN (V) 4.0 Supply Current, Iss ( μ A) 81N27 81N28 3.0 3.0 Ta=80℃ 2.0 25℃ 1.0 2.0 Ta=80℃ 25℃ 1.0 0.0 0 2 4 6 8 10 0.0 0 2 4 6 8 10 Input Voltage, V IN (V) 4.0 Supply Current, Iss ( μ A) Input Voltage, V IN (V) 4.0 Supply Current, Is s ( μ A) 81N29 81N30 3.0 Ta=80℃ 2.0 25℃ 1.0 3.0 Ta=80℃ 2.0 25℃ 1.0 0.0 0 2 4 6 8 10 0.0 0 2 4 6 8 10 Input Voltage, V IN (V) Input Voltage, V IN (V) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 10 of 15 QW-R502-039,I 81CXXX/81NXXX TYPICAL PERFORMANCE CHARACTERISTICS(Cont.) 81N33 81N35 CMOS IC 4.0 4.0 Supply Current, Iss (μA) 3.0 Supply Current, Iss (μA) 3.0 2.0 Ta=80℃ 25℃ 2.0 Ta=80℃ 1.0 1.0 25℃ 0.0 0 2 4 6 8 10 0.0 0 2 4 6 8 10 Input Voltage, VIN (V) Input Voltage, V IN (V) (4) OUTPUT VOLTAGE vs. INPUT VOLTAGE 30 81N16 VIN-VOUT:100kΩ Ta=25℃/ 80℃ 4 81N25 V IN-VOUT:100kΩ Ta=25℃/ 80 ℃ Output Voltage, VOUT (V) Output Voltage, VOUT (V) 2.5 2.0 1.5 1.0 0.5 0.0 3 2 1 0 1 2 Input Voltage, VIN (V) 81N27 VIN-VOUT:100k Ω Ta=25℃/ 80 ℃ 3 0 0 1 2 3 Input Voltage, VIN (V) 81N28 4 4 4 VIN-VOUT:100k Ω Ta=25℃ / 80℃ Output Voltage, VOUT (V) Output Voltage, VO UT (V) 3 3 2 2 1 1 0 0 1 2 3 Input Voltage, V IN (V) 4 0 0 2 3 1 Input Voltage, V IN (V) 4 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 11 of 15 QW-R502-039,I 81CXXX/81NXXX TYPICAL PERFORMANCE CHARACTERISTICS(Cont.) CMOS IC 4 Output Voltage, VOUT (V) 81N29 VIN-VOUT:100k Ω Ta=25℃ / 80℃ Output Voltage, VOUT (V) 5 4 3 2 81N30 VIN-VOUT:100kΩ Ta=25℃ / 80℃ 3 2 1 1 0 0 0 3 2 1 Input Voltage, V IN (V) 81N33 4 0 1 3 2 4 Input Voltage, VIN (V) 81N35 5 5 Output Voltage, VOUT (V) VIN-VOUT:100kΩ Ta=25℃ / 80℃ Output Voltage, V OUT (V) 5 4 3 2 VIN-VOUT:100kΩ Ta=25℃ / 80℃ 4 3 2 1 0 1 0 0 1 2 3 4 Input Voltage, VIN (V) 5 0 1 2 3 4 Input Voltage, VIN (V) 5 (5) N-CHANNEL DRIVRE OUTPUT CURRENT vs. VDS 81N16 Ta=25℃ Output Current, IOUT ( uA) 15 Output Current, IO UT ( mA) 1400 1200 81N16 Ta=25℃ VIN=0.8V 12 VIN=1.5V 9 1000 800 600 400 200 0.7V 6 1.0V 3 0 0.0 0.5 1.0 V DS (V) 1.5 2.0 0 0 0.2 0.4 0.6 VDS ( V) 0.8 1.0 UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 12 of 15 QW-R502-039,I 81CXXX/81NXXX TYPICAL PERFORMANCE CHARACTERISTICS(Cont.) CMOS IC 30 Ta=25 ℃ Output Current, IOUT (mA) 81N25 1200 1000 800 600 400 200 0 81N25 Ta=25℃ VIN=0.8V 20 15 1.5V 10 5 0 Output Current, IOUT (uA) 25 V IN=2.0V 0.7V 0.0 0.5 1.5 1.0 VDS ( V) 81N27 2.0 2.5 0.0 0.2 0.4 0.6 0.8 1.0 VDS (V) 81N27 Ta=25℃ V IN=0.8V 30 Ta=25℃ Output Current, IOUT ( mA) 1200 1000 800 600 400 200 0 20 15 10 5 0 0.0 V IN=2.0V Output Current, IOUT ( uA) 25 0.7V 1.0V 0.5 1.0 1.5 VDS ( V) 81N28 Ta=25 ℃ 2.0 2.5 0.0 0.2 0.4 0.6 0.8 1.0 V DS (V) 81N28 Ta=25℃ VIN=0.8V 30 300 Output Current, I OUT (mA) Output Current, I OUT ( uA) 25 20 15 10 5 0 1.0V 0.5 1.5 1.0 VDS (V) 2.0 2.5 VIN=2.0V 250 200 150 100 50 0 0.7V 0.0 0.0 0.2 0.4 0.6 0.8 1.0 VDS (V) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 13 of 15 QW-R502-039,I 81CXXX/81NXXX TYPICAL PERFORMANCE CHARACTERISTICS(Cont.) 81N29 Ta=25 ℃ Output Current, I OUT ( mA) Output Current, I OUT ( uA) CMOS IC 30 25 20 15 10 5 0 300 250 200 150 100 50 0 81N29 Ta=25℃ V IN=0.8V VIN=2.0V 0.7V 1.0V 0.0 0.5 1.0 1.5 VDS ( V) 81N30 2.0 2.5 0.0 0.2 0.4 0.6 0.8 1.0 VDS (V) 81N30 Ta=25℃ 60 50 350 300 Ta=25℃ Output Current, I OUT (uA) Output Current, I OUT (mA) 40 30 20 10 0 250 200 150 100 50 0 V IN=0.8V VIN=2.0V 0.7V 1.0V 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0.0 0.0 0.2 0.4 0.6 0.8 1.0 VDS ( V) 81N33 Ta=25℃ 300 V DS (V) 81N33 Ta=25℃ 60 50 40 30 20 10 0 350 Output Current, I OUT (mA) Output Current, I OUT (uA) 250 200 150 V IN=3.0V V IN =0.8V 2.0V 1.0V 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0.7V 100 50 0 0.0 0.0 0.2 0.4 0.6 0.8 1.0 VDS (V) VDS (V) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 14 of 15 QW-R502-039,I 81CXXX/81NXXX TYPICAL PERFORMANCE CHARACTERISTICS(Cont.) 81N35 Ta=25℃ V IN=3.0V Output Current, I OUT ( uA) CMOS IC 60 50 40 30 1400 1200 1000 800 81N35 Ta=25℃ V IN =0.8V Output Current, I OUT ( mA) 2.5V 0.7V 600 400 200 0 2.0V 20 1.5V 10 0 0.0 0 .5 1.0 1.5 2.0 2.5 3.0 3.5 0.0 0.2 0.4 0.6 0.8 1.0 VDS (V) VDS ( V) UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 15 of 15 QW-R502-039,I
81N17-H-AB3-I-R 价格&库存

很抱歉,暂时无法提供与“81N17-H-AB3-I-R”相匹配的价格&库存,您可以联系我们找货

免费人工找货