QFN-Style Solder-down System-on-Modules

For larger volume applications, or where a tiny footprint is needed, Ka-Ro QS- and QSX-Modules are QFN-style solder-down modules which fit the bill perfectly. As well as optimising size and price, QS Modules expedite the route to production in a number of ways.

  • Tiny footprint – just 27mm x 27mm x 2.3mm (29 x 29 for QSX)
    • Permits use in tiny product footprints
    • Small size guarantees coplanarity
  • Solder directly to baseboard
    • Ideal for rugged environments
    • Eliminates connector cost and bulk
  • Single-sided 100-pin assembly
    • Efficient layout minimizes EMI problems
    • No component subjected to 3rd reflow pass
    • No buried contacts needing X-Ray inspection
  • Easy routing of signals
    • All components on top, no cutouts or keep-outs
    • Simple pinout means no crossings or hidden vias
  • Bottom side ground pad
    • Avoids return-path loops
    • Impedance matching for differential signals
    • Aids in heat dissipation
    • Self-alignment during reflow
  • Easy SMT assembly
    • Shipped on reels for automated assembly
    • All signals at edge for optical inspection
    • Solder mask and stencil design provided

Read our blog post 9 Reasons to Consider a Solder Down Module (and 5 Pitfalls to Avoid) for a more detailed look at this topic.

Below is a table showing the features of our solder-down module options:

KaRo QS-Module QFN solder-down system on module
solder down module pinout
qs module base
QSMP-13QS91QSMP-15QSMP-20QSMP-23QSMP-25QSRZQS93QS8MQSXMQSXP
ProcessorST Micro STM32MP135CNXP i.MX9131ST Micro STM32MP157CSTMicro STM32MP235CSTMicro STM32MP235CSTMicro STM32MP255FRenesas RZ/G2LNXP i.MX93NXP i.MX8M Nano Dual / Mini QuadNXP i.MX8M Mini QuadNXP i.MX8M Plus Quad
CPU1x Cortex-A71x Cortex-A552x Cortex-A72x Cortex-A352x Cortex-A352x Cortex-A352x Cortex-A552x Cortex-A552/4x Cortex-A534x Cortex-A534x Cortex-A53
Clock Max (MHz)6501400650120012001500120017001400 / 160016001600
RAM (MB)256512256/51251210241024512 / 10241024512 / 102410242048
NAND Flash (MB)4GB4GB128MB / 4GB4GB4GB4GB4GB4GB4GB4GB8GB
Video Coprocessor----yyy-y (Mini only)yy
Graphics Engine--3D OpenGL ES 2.0*3D OpenGL ES 3.13D OpenGL ES 3.13D OpenGL ES 3.1ARM Mali G312D GPUOpenGL ES 2.0 (/3.0/ OpenCL/Vulcan - Nano)OpenGL ES 2.0OpenGL ES 3.0/OpenCL/Vulcan
NPU (TOPS)---0.60.61.35-0.5--2.3
MAX UARTs 85336635334
Ethernet GBe11112212111
Max I2C Interface57235527225
LCD Controller1366x7681366x7681366x7681080p1080p1080p1080p720p1080p1080p1080p
Digital Audio1111
1
1
1
1
1
1
1
SD card11111111111
USB 2.0 Host 111112111 (Mini only)1-
USB 3.0 Host -----1----1
USB 2.0 OTG11111111111
PCIe-----1---11
Max SPI28227724223
PWM 16111116114
Camera Input----MIPI-CSIMIPI-CSIMIPI-CSIMIPI-CSIMIPI-CSIMIPI-CSIMIPI-CSI x 2
CAN22222322--2
ADC444--------
parallel RGB 1111--1----
MIPI-DSI--11--1-111
LVDS----11-1---
Power mW (Linux/Sleep)520/15415/35520/15TBA550/96882/80657/500655/125500/45739/401230/86
Temperature Range-25 to +85C-25 to +85C-25 to +85C-25 to +85C-40 to +85C-40 to +85C-40 to +85C-40 to +85C-25 to +85C-25 to +85C-30 to +85C
Dimensions27mm x 27mm x 2.3mm27mm x 27mm x 2.3mm27mm x 27mm x 2.3mm27mm x 27mm x 2.6mm27mm x 27mm x 2.6mm29mm x 29mm x 2.6mm27mm x 27mm x 2.3mm27mm x 27mm x 2.6mm27mm x 27mm x 2.3mm29mm x 29mm x 2.6mm29mm x 29mm x 2.6mm
ConnectorsQFN100QFN100QFN100QFN100QFN100QFN108QFN100QFN100QFN100QFN108QFN108
Linuxyyyyyyyyyyy
QNX-TBA-----8.07.x7.xTBA
QSMP-13QS91QSMP-15QSMP-20QSMP-23QSMP-25QSRZQS93QS8MQSXMQSXP

* on certain variant(s) only