QS8K11TCR
Dual MOSFET, Dual N Channel, 30 V, 3.5 A, 0.05 ohm
- Manufacturer: ROHM
- Product type: Dual MOSFETs
- SVHC: To Be Advised
- No. of Pins: 8Pins
- Channel Type: Dual N Channel
- Product Range: -
- Qualification: -
- Transistor Case Style: TSMT
- Operating Temperature Max: 150°C
- Power Dissipation N Channel: 1.5W
- Power Dissipation P Channel: -
- Drain Source Voltage Vds N Channel: 30V
- Drain Source Voltage Vds P Channel: -
- Continuous Drain Current Id N Channel: 3.5A
- Continuous Drain Current Id P Channel: -
- Drain Source On State Resistance N Channel: 0.05ohm
- Drain Source On State Resistance P Channel: -
| Delivery and price | |
|---|---|
| Units per pack | 3000 |
| Price | 0.201 € |
| Current stock | 10+ |
| Lead time | 30 days |
**Dual Nch 30V 3.5A Power MOSFET** Datasheet ## QS8K11 ## l **Outline** |VDSS|30V| |---|---| |RDS(on) (Max.)|50mW| |ID|3.5A| |PD|1.5W| **==> picture [164 x 76] intentionally omitted <==** **----- Start of picture text -----**<br> TSMT8 (8)<br>(7)<br>(6)<br>(5)<br>(1)<br>(2)<br>(3)<br>(4)<br>**----- End of picture text -----**<br> ## l **Features** ## l **Inner circuit** 1) Low on - resistance. 2) Built-in G-S Protection Diode. 3) Small Surface Mount Package (TSMT8). - 4) Pb-free lead plating ; RoHS compliant (1) Tr1 Source (5) Tr2 Drain (2) Tr1 Gate (6) Tr2 Drain (3) Tr2 Source (7) Tr1 Drain (4) Tr2 Gate (8) Tr1 Drain - *1 ESD PROTECTION DIODE *2 BODY DIODE ## l **Packaging specifications** ## l **Application** DC/DC converters |Type|Packaging|Taping| |---|---|---| ||Reel size (mm)|180| ||Tape width (mm)|8| ||Basic ordering unit (pcs)|3,000| ||Taping code|TR| ||Marking|K11| ## l **Absolute maximum ratings** (Ta = 25°C) <It is the same ratings for the Tr1 and Tr2> |Parameter|Symbol|Value|Unit| |---|---|---|---| |Drain - Source voltage|VDSS|30|V| |Continuous drain current|ID<br>*1|3.5|A| |Pulsed drain current|ID,pulse<br>*2|12|A| |Gate - Source voltage|VGSS|20|V| |Power dissipation|PD<br>*3|1.5|W| ||PD<br>*4|0.55|W| |Junction temperature|Tj|150|°C| |Range of storage temperature|Tstg|-55 to +150|°C| www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. **2012.06 - Rev.B** 1/11 Data Sheet **QS8K11** ## l **Thermal resistance** |l**Thermal resistance**|||||| |---|---|---|---|---|---| |Parameter|Symbol|Values|||Unit| |||Min.|Typ.|Max.|| |Thermal resistance, junction - ambient|RthJA<br>*3|-|-|83.3|°C/W| |Thermal resistance, junction - ambient|RthJA<br>*4|-|-|227|°C/W| ## l **Electrical characteristics** (Ta = 25°C) <It is the same characteristics for the Tr1 and Tr2> |Parameter|Symbol|Conditions|Values|Values|Values|Unit| |---|---|---|---|---|---|---| ||||Min.|Typ.|Max.|| |Drain - Source breakdown<br>voltage|V(BR)DSS|VGS= 0V, ID= 1mA|30|-|-|V| |Breakdown voltage<br>temperature coefficient|ΔV(BR)DSS<br>ΔTj|ID= 1mA<br>referenced to 25°C|-|35|-|mV/°C| |Zero gate voltage drain current|IDSS|VDS= 30V, VGS= 0V|-|-|1|mA| |Gate - Source leakage current|IGSS|VGS=20V, VDS= 0V|-|-|10|mA| |Gate threshold voltage|VGS (th)|VDS= 10V, ID= 1mA|1.0|-|2.5|V| |Gate threshold voltage<br>temperature coefficient|ΔV(GS)th<br>ΔTj|ID= 1mA<br>referenced to 25°C|-|-3.3|-|mV/°C| |Static drain - source<br>on - state resistance|RDS(on)<br>*5|VGS=10V, ID=3.5A|-|35|50|mW| |||VGS=4.5V, ID=3.5A|-|45|65|| |||VGS4.0V, ID=3.5A|-|50|70|| |||VGS=10V, ID=3.5A, Tj=125°C|-|53|75|| |Gate input resistannce|RG|f = 1MHz, open drain|-|2|-|W| |Transconductance|gfs *5|VDS= 10V, ID= 3.5A|2.2|4.4|-|S| - *1 Limited only by maximum temperature allowed. - *2 Pw 10ms, Duty cycle 1% - *3 Mounted on a seramic board (30×30×0.8mm) - *4 Mounted on a FR4 (20×20×0.8mm) *5 Pulsed www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. **2012.06 - Rev.B** 2/11 Data Sheet **QS8K11** ## l **Electrical characteristics** (Ta = 25°C) ## <It is the same characteristics for the Tr1 and Tr2> |Parameter|Symbol|Conditions|Values|Values|Values|Unit| |---|---|---|---|---|---|---| ||||Min.|Typ.|Max.|| |Input capacitance|Ciss|VGS= 0V<br>VDS= 10V<br>f = 1MHz|-|180|-|pF| |Output capacitance|Coss||-|70|-|| |Reverse transfer capacitance|Crss||-|35|-|| |Turn - on delay time|td(on)<br>*5|VDD⋍15V, VGS= 10V<br>ID= 1.7A<br>RL= 8.87W<br>RG= 10W|-|10|-|ns| |Rise time|tr<br>*5||-|25|-|| |Turn - off delay time|td(off)<br>*5||-|25|-|| |Fall time|tf<br>*5||-|7|-|| ## l **Gate Charge characteristics** (Ta = 25°C) ## <It is the same characteristics for the Tr1 and Tr2> |Parameter|Symbol|Conditions|Values|Values|Values|Unit| |---|---|---|---|---|---|---| ||||Min.|Typ.|Max.|| |Total gate charge|Qg<br>*5|VDD⋍15V, ID= 3.5A<br>VGS= 5V|-|3.3|-|nC| |||VDD⋍15V, ID= 3.5A<br>VGS= 10V|-|7|-|| |Gate - Source charge|Qgs<br>*5|VDD⋍15V, ID= 3.5A<br>VGS= 5V|-|1.0|-|| |Gate - Drain charge|Qgd<br>*5||-|1.0|-|| ## l **Body diode electrical characteristics** (Source-Drain)(Ta = 25°C) ## <It is the same characteristics for the Tr1 and Tr2> |Parameter|Symbol|Conditions|Values|Values|Values|Unit| |---|---|---|---|---|---|---| ||||Min.|Typ.|Max.|| |Inverse diode continuous,<br>forward current|IS *1|Ta= 25°C|-|-|1|A| |Forward voltage|VSD<br>*5|VGS= 0V, Is= 3.5A|-|-|1.2|V| www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. **2012.06 - Rev.B** 3/11 Data Sheet **QS8K11** ## l **Electrical characteristic curves** ## Fig.1 Power Dissipation Derating Curve **==> picture [222 x 228] intentionally omitted <==** **----- Start of picture text -----**<br> 120<br>100<br>80<br>60<br>40<br>20<br>0<br>0 50 100 150 200<br>Junction Temperature : Tj [°C]<br> max. [%]<br>D<br>/P<br>D<br>Power Dissipation : P<br>**----- End of picture text -----**<br> **==> picture [229 x 262] intentionally omitted <==** **----- Start of picture text -----**<br> Fig.3 Normalized Transient Thermal<br> Resistance vs. Pulse Width<br>10<br>Ta=25ºC<br>Single Pulse<br>1<br>top D=1<br> D=0.5<br>0.1 D=0.1<br> D=0.05<br> D=0.01<br>bottom Signle<br>0.01 Rth(ch-a)=100ºC/W<br>Rth(ch-a)(t)=r(t)×Rth(ch-a)<br>Mounted on ceramic board<br>(30mm × 30mm × 0.8mm)<br>0.001<br>0.0001 0.01 1 100<br>Pulse Width : PW [s]<br>(t)<br>Normalized Transient Thermal Resistance : r<br>**----- End of picture text -----**<br> ## Fig.2 Maximum Safe Operating Area **==> picture [224 x 541] intentionally omitted <==** **----- Start of picture text -----**<br> 100<br>Operation in this area<br>is limited by RDS(on)<br>( VGS = 10V )<br>PW = 100ms<br>10<br>PW = 10ms<br>PW = 1ms<br>1<br>DC Operation<br>0.1<br>Ta= 25ºC<br>Single Pulse<br>Mounted on a ceramic board.<br>(30mm × 30mm × 0.8mm)<br>0.01<br>0.1 1 10 100<br>Drain - Source Voltage : VDS [V]<br>Fig.4 Single Pulse Maxmum<br> Power dissipation<br>1000<br>Ta=25ºC<br>Single Pulse<br>100<br>10<br>1<br>0.1<br>0.0001 0.01 1 100<br>Pulse Width : PW [s]<br> [A]<br>D<br>Drain Current : I<br>Peak Transient Power : P(W)<br>**----- End of picture text -----**<br> www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. **2012.06 - Rev.B** 4/11 Data Sheet **QS8K11** ## l **Electrical characteristic curves** ## Fig.5 Typical Output Characteristics(I) **==> picture [235 x 592] intentionally omitted <==** **----- Start of picture text -----**<br> 3<br>2.5 Ta=25℃<br>VGS= 10V<br>2 VGS= 4.5V<br>VGS= 4.0V<br>1.5<br>1<br>VGS= 2.5V<br>0.5<br>VGS= 2.0V<br>0<br>0 0.2 0.4 0.6 0.8 1<br>Drain - Source Voltage : VDS [V]<br> [A]<br>D<br>Drain Current : I<br>**----- End of picture text -----**<br> ## Fig.6 Typical Output Characteristics(II) **==> picture [222 x 222] intentionally omitted <==** **----- Start of picture text -----**<br> 3.5<br>3 VGS= 10V<br>Ta=25℃<br>2.5 VGS= 2.5V<br>2 VGS= 4.5V<br>VGS= 4.0V<br>1.5<br>1<br>0.5<br>VGS= 2.0V<br>0<br>0 2 4 6 8 10<br>Drain - Source Voltage : VDS [V]<br> [A]<br>D<br>Drain Current : I<br>**----- End of picture text -----**<br> www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. **2012.06 - Rev.B** 5/11 Data Sheet **QS8K11** ## l **Electrical characteristic curves** Fig.7 Breakdown Voltage vs. Junction Temperature **==> picture [219 x 232] intentionally omitted <==** **----- Start of picture text -----**<br> 80<br>VGS=0V<br>ID=1mA<br>60<br>40<br>20<br>0<br>-50 0 50 100 150<br>Junction Temperature : Tj [°C]<br> [V]<br>(BR)DSS<br>Drain - Source Breakdown Voltage : V<br>**----- End of picture text -----**<br> Fig.8 Typical Transfer Characteristics **==> picture [221 x 199] intentionally omitted <==** **----- Start of picture text -----**<br> 10<br>VDS = 10V<br>1<br>Ta = 125ºC<br>Ta = 75ºC<br>0.1 Ta = 25ºC<br>Ta = -25ºC<br>0.01<br>0.001<br>0 1 2 3<br> [A]<br>D<br>Drain Current : I<br>**----- End of picture text -----**<br> Gate - Source Voltage : VGS [V] Fig.9 Gate Threshold Voltage vs. Junction Temperature Fig.10 Transconductance vs. Drain Current **==> picture [465 x 230] intentionally omitted <==** **----- Start of picture text -----**<br> 3 10<br>VDS=10V VDS = 10V<br>ID=1mA<br>2<br>1<br>Ta = 125ºC<br>Ta = 75ºC<br>1 Ta = 25ºC<br>Ta = -25ºC<br>0.1<br>0<br>0.01 0.1 1 10<br>-50 0 50 100 150<br>Junction Temperature : Tj [°C] Drain Current : ID [A]<br> [V]<br>GS(th) [S] fs<br>Gate Threshold Voltage : V Transconductance : g<br>**----- End of picture text -----**<br> www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. **2012.06 - Rev.B** 6/11 Data Sheet **QS8K11** ## l **Electrical characteristic curves** Fig.12 Static Drain - Source On - State Resistance vs. Gate Source Voltage Fig.11 Drain CurrentDerating Curve **==> picture [485 x 547] intentionally omitted <==** **----- Start of picture text -----**<br> 1.2 100<br>Ta=25℃<br>1<br>80 ID= 1.75A<br>0.8 ID= 3.5A<br>60<br>0.6<br>40<br>0.4<br>20<br>0.2<br>0 0<br>-25 0 25 50 75 100 125 150 0 2 4 6 8 10<br>Junction Temperature : Tj [ºC] Gate - Source Voltage : VGS [V]<br>Fig.13 Static Drain - Source On - State Fig.14 Static Drain - Source On - State<br> Resistance vs. Drain Current(I) Resistance vs. Junction Temperature<br>1000 60<br>Ta=25℃<br>50<br>40<br>VGS= 4.0V<br>100 VGS= 4.5V 30<br>VGS= 10V<br>20<br>10<br>VGS=10V<br>ID=3.5A<br>10 0<br>0.01 0.1 1 10 -50 -25 0 25 50 75 100 125 150<br>Drain Current : ID [A] Junction Temperature : Tj [ºC]<br>]<br>W<br> [m<br>max. (%)<br>D DS(on)<br>/I<br>D : R<br>: I<br>Drain Current Dissipation<br>Static Drain - Source On-State Resistance<br>]<br>W ]<br>W<br> [m<br> [m<br>DS(on)<br>DS(on)<br>: R<br>: R<br>Static Drain - Source On-State Resistance<br>Static Drain - Source On-State Resistance<br>**----- End of picture text -----**<br> Fig.14 Static Drain - Source On - State Resistance vs. Junction Temperature www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. **2012.06 - Rev.B** 7/11 Data Sheet **QS8K11** ## l **Electrical characteristic curves** Fig.15 Static Drain - Source On - State Resistance vs. Drain Current(II) **==> picture [238 x 592] intentionally omitted <==** **----- Start of picture text -----**<br> 1000<br>VGS = 10V<br>Ta = 125ºC<br>Ta = 75ºC<br>Ta = 25ºC<br>100 Ta = -25ºC<br>10<br>0.1 1 10<br>Drain Current : ID [A]<br>Fig.17 Static Drain - Source On - State<br> Resistance vs. Drain Current(IV)<br>1000<br>VGS = 4.0V<br>Ta = 125ºC<br>Ta = 75ºC<br>Ta = 25ºC<br>Ta = -25ºC<br>100<br>10<br>0.1 1 10<br>Drain Current : ID [A]<br>]<br>W<br> [m<br>DS(on)<br>: R<br>Static Drain - Source On-State Resistance<br>]<br>W<br> [m<br>DS(on)<br>: R<br>Static Drain - Source On-State Resistance<br>**----- End of picture text -----**<br> Fig.16 Static Drain - Source On - State Resistance vs. Drain Current(III) **==> picture [235 x 199] intentionally omitted <==** **----- Start of picture text -----**<br> 1000<br>VGS = 4.5V<br>Ta = 125ºC<br>Ta = 75ºC<br>Ta = 25ºC<br>100 Ta = -25ºC<br>10<br>0.1 1 10<br>]<br>W<br> [m<br>DS(on)<br>: R<br>Static Drain - Source On-State Resistance<br>**----- End of picture text -----**<br> Drain Current : ID [A] www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. **2012.06 - Rev.B** 8/11 Data Sheet **QS8K11** ## l **Electrical characteristic curves** Fig.18 Typical Capacitance vs. Drain - Source Voltage **==> picture [225 x 199] intentionally omitted <==** **----- Start of picture text -----**<br> 1000<br>Ciss<br>100<br>Crss<br>Coss<br>Ta=25°C<br>f=1MHz<br>VGS=0V<br>10<br>0.01 0.1 1 10 100<br>Capacitance : C [pF]<br>**----- End of picture text -----**<br> Drain - Source Voltage : VDS [V] Fig.20 Dynamic Input Characteristics **==> picture [215 x 224] intentionally omitted <==** **----- Start of picture text -----**<br> 10<br>8<br>6<br>4<br>Ta=25°C<br>2 VDD= 15V<br>ID= 3.5A<br>RG=10W<br>0<br>0 2 4 6 8 10<br>Total Gate Charge : Qg [nC]<br> [V]<br>GS<br>Gate - Source Voltage : V<br>**----- End of picture text -----**<br> ## Fig.19 Switching Characteristics **==> picture [224 x 198] intentionally omitted <==** **----- Start of picture text -----**<br> 10000<br>Ta=25°C<br>VDD=15V<br>1000 VGS=10V<br>tf RG=10W<br>t<br>d(off)<br>100<br>10<br>td(on) tr<br>1<br>0.01 0.1 1 10<br>Switching Time : t [ns]<br>**----- End of picture text -----**<br> Drain Current : ID [A] Fig.21 Source Current vs. Sourse Drain Voltage **==> picture [218 x 223] intentionally omitted <==** **----- Start of picture text -----**<br> 10<br>VGS = 0V<br>1<br>Ta = 125ºC<br>0.1 Ta = 75ºC<br>Ta = 25ºC<br>Ta = -25ºC<br>0.01<br>0 0.5 1 1.5<br>Source-Drain Voltage : VSD [V]<br> [A]<br>S<br>Source Current : I<br>**----- End of picture text -----**<br> www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. **2012.06 - Rev.B** 9/11 Data Sheet **QS8K11** ## l **Measurement circuits** Fig.1-1 Switching Time Measurement Circuit **==> picture [63 x 52] intentionally omitted <==** Fig.2-1 Gate Charge Measurement Circuit **==> picture [62 x 51] intentionally omitted <==** Fig.1-2 Switching Waveforms **==> picture [142 x 81] intentionally omitted <==** Fig.2-2 Gate Charge Waveform **==> picture [118 x 101] intentionally omitted <==** www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. **2012.06 - Rev.B** 10/11 Data Sheet **QS8K11** ## l **Dimensions** (Unit : mm) **==> picture [447 x 309] intentionally omitted <==** **----- Start of picture text -----**<br> D<br>A<br>TSMT8<br>c<br>e<br>e b<br>x S A<br>S<br>y S<br>b2<br>L1 Lp1<br>E<br>E H<br>L Lp<br>l2<br>e1<br>A<br>A1 l1<br>**----- End of picture text -----**<br> ## **Patterm of terminal position areas** |DIM|MILIMETERS|MILIMETERS|INCHES|INCHES| |---|---|---|---|---| ||MIN|MAX|MIN|MAX| |A|0.75|0.85|0.03|0.033| |A1|0.00|0.05|0|0.002| |b|0.27|0.37|0.011|0.015| |c|0.12|0.22|0.005|0.009| |D|2.90|3.10|0.114|0.122| |E|2.30|2.50|0.091|0.098| |e|0.65||0.03|| |HE|2.70|2.90|0.106|0.114| |L|0.10|0.30|0.004|0.012| |L1|0.10|0.30|0.004|0.012| |Lp|0.19|0.39|0.007|0.015| |Lp1|0.19|0.39|0.007|0.015| |x|-|0.10|-|0.004| |y|-|0.10|-|0.004| |||||| |DIM|MILIMETERS||INCHES|| ||MIN|MAX|MIN|MAX| |e1|2.41||0.10|| |b3|-|0.47|-|0.019| |l1|-|0.49|-|0.019| |l2|-|0.49|-|0.019| Dimension in mm/inches www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. **2012.06 - Rev.B** 11/11 Notice ## **N o t e s** No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. **==> picture [80 x 61] intentionally omitted <==** Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ## ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. R1120A
Updated at June 9, 2026
Founded with a steadfast commitment to a "Quality First" corporate policy, ROHM is a globally recognized leader in the design and manufacture of semiconductors and electronic components. Originally named for its foundational product, resistors, combined with the unit of resistance, the "R" in ROHM has evolved to represent the brand's enduring dedication to reliability. Today, the company is renowned for driving technological advancement and supplying high-performance, dependable solutions to engineers worldwide. The company's engineering excellence is most prominently showcased in its expansive portfolio of discrete semiconductors. ROHM provides an industry-leading selection of bipolar transistors, alongside a massive array of Zener single diodes, Schottky diodes, and small signal diodes. Engineered for rigorous efficiency and compact footprint requirements, these foundational components are critical for modern power management, precise signal processing, and high-speed switching applications. In addition to its core discrete offerings, ROHM delivers advanced power control and circuit protection solutions. This includes a highly trusted lineup of single and dual MOSFETs, single IGBTs, and transient voltage suppressors (TVS diodes) designed to safeguard sensitive circuitry. Complemented by intelligent power modules, precision sensors, and specialized ICs, ROHM equips designers with the premium components necessary to build the next generation of robust electronic infrastructure.
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