Items : %s%s
Evaluation Boards
Evaluation boards are electronic circuit boards that are designed to help engineers and developers evaluate the performance of a specific electronic component or system. These boards typically include the necessary components and interfaces to connect the component or system being evaluated to a computer or other testing equipment. Evaluation boards are commonly used in the development and testing of new electronic products, as they allow engineers to quickly and easily test the performance of a component or system in a real-world environment. They are also useful for troubleshooting and debugging electronic systems, as they provide a standardized platform for testing and comparison. Overall, evaluation boards are an essential tool for anyone working with electronic components or systems, as they help to ensure that products are designed and tested to the highest standards of performance and reliability.
Connector Type
- BOARD CONNECTOR
- Power
- USB
Contact Material
- Brass
Contact Plating
- Gold
- Gold, Tin
- Lead, Tin
ECCN Code
- 3A991.A.2
- 7A994
- EAR99
Factory Lead Time
- 1 Weeks
- 10 Weeks
- 11 Weeks
- 111 Weeks
- 12 Weeks
- 13 Weeks
- 14 Weeks
- 143 Weeks
- 15 Weeks
- 16 Weeks
- 17 Weeks
- 18 Weeks
- 19 Weeks
- 2 Weeks
- 20 Weeks
- 21 Weeks
- 22 Weeks
- 24 Weeks
- 25 Weeks
- 26 Weeks
- 28 Weeks
- 29 Weeks
- 3 Weeks
- 32 Weeks
- 35 Weeks
- 4 Weeks
- 42 Weeks
- 5 Weeks
- 52 Weeks
- 6 Weeks
- 7 Weeks
- 70 Weeks
- 8 Weeks
- 9 Weeks
- 99 Weeks
Feature
- I2C
fmax-Min
- 0.4 MHz
- 1 MHz
Frequency
- 6GHz
Housing Material
- Thermoplastic
Insulation Material
- GLASS FILLED POLYBUTYLENE TEREPHTHALATE
JESD-609 Code
- e1
- e3
Lifecycle Status
- ACTIVE (Last Updated: 1 day ago)
- ACTIVE (Last Updated: 1 week ago)
- ACTIVE (Last Updated: 2 days ago)
- ACTIVE (Last Updated: 3 days ago)
- ACTIVE (Last Updated: 4 days ago)
- ACTIVE (Last Updated: 5 days ago)
- ACTIVE (Last Updated: 6 days ago)
- CONTACT ADI (Last Updated: 1 week ago)
- IN PRODUCTION (Last Updated: 1 month ago)
- LAST TIME BUY (Last Updated: 1 month ago)
- LAST TIME BUY (Last Updated: 1 week ago)
- LAST TIME BUY (Last Updated: 2 weeks ago)
- OBSOLETE (Last Updated: 1 week ago)
- OBSOLETE (Last Updated: 2 weeks ago)
- OBSOLETE (Last Updated: 4 days ago)
- PRODUCTION (Last Updated: 1 month ago)
- PRODUCTION (Last Updated: 1 week ago)
- PRODUCTION (Last Updated: 2 months ago)
- PRODUCTION (Last Updated: 2 weeks ago)
- PRODUCTION (Last Updated: 3 days ago)
- PRODUCTION (Last Updated: 3 months ago)
- PRODUCTION (Last Updated: 3 weeks ago)
- PRODUCTION (Last Updated: 4 days ago)
- PRODUCTION (Last Updated: 4 months ago)
- PRODUCTION (Last Updated: 4 weeks ago)
- PRODUCTION (Last Updated: 5 days ago)
- PRODUCTION (Last Updated: 6 days ago)
Max Operating Temperature
- 105°C
- 125°C
- 85°C
Mfr
- Amphenol SGX Sensortech
- Arduino
- SparkFun Electronics
- STMicroelectronics
Min Operating Temperature
- -40°C
Moisture Sensitivity Level (MSL)
- 1 (Unlimited)
- 2 (1 Year)
- 3 (168 Hours)
- Not Applicable
- Vendor Undefined
Mount
- Base
- Cable
- External
- Hardware
- Panel
- PCB
- Plug-In
- Reverse
- Screw
- Socket
- Standard
- Surface Mount
- Vertical
- Wire
Mounting Feature
- SURFACE MOUNT
Mounting Style
- STRAIGHT
Number of Pins
- 14
- 16
- 20
- 24
- 28
- 3
- 32
- 48
- 5
- 6
- 78
- 8
Number of Positions
- 24
Number of Terminations
- 18
- 24
Package / Case
- 100
- 24-DIP
- 300
- Axial
- CLCC
- LCC
- Metal
- Module
- MSOP
- SIP
- SMD/SMT
- SOIC
- SOP
- SOT-23
- SOT-323
- TSSOP
Packaging
- Bag
- Box
- Bulk
- Tray
Part Status
- Active
- Discontinued
- Last Time Buy
- Not For New Designs
- Obsolete
Pbfree Code
- no
- yes
Published
- 1997
- 1998
- 2000
- 2001
- 2002
- 2003
- 2004
- 2005
- 2006
- 2007
- 2008
- 2009
- 2010
- 2011
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
- 2018
Resistance
- 50Ohm
Series
- #3
- -
- AMT203
- AMT303
- AttitudeEngine™
- AutoDevKit
- AVR® ATtiny
- AXO®
- B6T Workbench
- Bare Conductive
- BASIC Stamp®
- C-SERIES SIPM
- CaliPile™
- CameraChip™, OmniBSI™, TrueFocus™
- CapSense®
- CapSense® Express™
- CapSense®, QuietZone™
- CapTouch™
- Circuits from the Lab™
- ColdFire®
- dBCool®
- DigiPile™
- DigiPyro®
- DLP® NIRscan™
- Dust Networks®, SmartMesh®
- eCompass
- FHS
- FireFly
- FlightSense?
- FlightSense™
- Flymaple
- Freedom Xtrinsic
- FSR
- g-Select
- GestIC®
- GHS-SME
- Grid-EYE
- GYPRO®
- Himalaya
- HMC
- HMR
- iCoupler®
- iMEMS®
- iMEMS®, iSensor™
- iNEMO
- IQ Switch®, ProxSense®
- iSensor™
- J-SERIES SIPM
- Kinetis
- LaunchPad™
- Lepton®
- LPC17xx
- LPC800
- MagAlpha
- MAXQ®
- maXTouch™
- MEMS
- MEMS, nano
- MityDSP™
- MK04
- MK11/M5
- MK11/M8
- MK21
- MMA
- MPR
- MTi 1
- MTi 10
- MTi 100
- mTouch™
- mTouch™, PICDEM™
- NanEye®
- NanoVesta
- NavChip™
- PICmicro®
- PICtail™
- PICtail™ Plus
- PIC® 32
- PSoC®
- PSOC® CapSense
- PYTHON
- QDA
- QFC
- QFS
- QGS
- QTouch™
- Quantum, QMatrix™
- Quantum, QTouch™
- QuickSense™
- RabbitCore 4000
- RB-SERIES SIPM
- RightTouch™
- RX
- S-Touch™
- Sensors Xplained
- SensorTile
- SensorXplorer™
- Simblee™
- SimpleLink™ SensorTag
- SLG
- SLI
- SLS
- SMAARTWIRE™
- SmartMotion®
- STAR
- STM32
- STM8S
- STM8T
- ToolStick
- TRACKER™
- Triaxis®
- TruTherm®
- Unagi
- VersaPad™
- VersaPoint™
- Vinco, Vinculum-II
- X-AMP®
- XENSIV™
- Xplained Pro
- Xtrinsic
- Zena™
- zForce AIR Touch Sensor
- ZMOTION®
- ZSTAR
- ZSTAR2
- ZSTAR3
- µPOINT®
Shape
- Square
Surface Mount
- YES
Terminal Finish
- Matte Tin (Sn)
- Matte Tin (Sn) - annealed
- Tin/Silver/Copper (Sn/Ag/Cu)
Type
- Integrated Circuit (IC)
USB
- USB 2.0
Weight
- 1.133981g
- 1.360777g
- 1.814369g
- 1.995806g
- 13.607771g
- 14.605674g
- 20.411657g
- 23.586803g
- 45.359237g
- 50.008559mg
- 6.078138g
- 63.502932g
| Compare | Image | Name | Manufacturer | Pricing(USD) | Quantity | Weight(Kg) | Size(LxWxH) | Datasheet | Factory Lead Time | Mount | Packaging | Published | Series | Part Status | Moisture Sensitivity Level (MSL) | Number of Positions | Max Operating Temperature | Min Operating Temperature | Number of Contacts | Operating Supply Voltage | Accessory Type | RoHS Status | Lead Free | Radiation Hardening | Number of Pins | Package / Case | Interface | REACH SVHC | Evaluation Kit | Type | Base Part Number | Output Voltage | Output Current | Voltage - Output | Feature | Voltage - Input | Applications | Current - Output | Core Architecture | Function | Operating System | Platform | Sensor Type | Data Bus Width | Frequency - Switching | Main Purpose | Utilized IC / Part | Contents | Supplied Contents | Secondary Attributes | Primary Attributes | Embedded | Board Type | Outputs and Type | Regulator Topology | Module/Board Type | Media Delivery Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
E2SR | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 2016 | Quantum | Obsolete | 1 (Unlimited) | Non-RoHS Compliant | Board(s) | |||||||||||||||||||||||||||||||||||||||||||||
![]() |
MA330025-3 | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 2011 | Active | 1 (Unlimited) | 3.6V | Plug-In Module (PIM) | ROHS3 Compliant | No | 144 | Module | No SVHC | Yes | dsPIC | |||||||||||||||||||||||||||||||||||||||
![]() |
EVB9311 | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 0133 | Obsolete | 2 (1 Year) | Non-RoHS Compliant | 100 | Yes | Interface | Ethernet | LAN9311 | Board(s) | 2 PHYs with HP Auto-MDIX, Auto-Flow Control, 32-Bit CRC, MDI/MDI-X | 2 Ports, 100BASE-TX/10BASE-T, Managed | No | ||||||||||||||||||||||||||||||||||||||
![]() |
ATBNO055-XPRO | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 14 Weeks | Box | 2009 | Xplained Pro | Active | 1 (Unlimited) | ROHS3 Compliant | Accelerometer, Gyroscope, Magnetometer, 3 Axis | BNO055 | Board(s) | ||||||||||||||||||||||||||||||||||||||||||
![]() |
PS5163 | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | Obsolete | 1 (Unlimited) | ROHS3 Compliant | Contains Lead | No | Module | Yes | Power Management | Battery Monitor | PS501 | Board(s) | ||||||||||||||||||||||||||||||||||||||||
![]() |
MA180033 | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 18 Weeks | 2011 | Active | 1 (Unlimited) | Plug-In Module (PIM) | ROHS3 Compliant | Lead Free | 80 | Module | No SVHC | PIC | ||||||||||||||||||||||||||||||||||||||||
![]() |
AT73C204-EK | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 1997 | PMAAC™ | Obsolete | 3 (168 Hours) | Non-RoHS Compliant | Power Management | Special Purpose: Mobiles | AT73C204 | Board(s) | ||||||||||||||||||||||||||||||||||||||||||
![]() |
AC164145 | Microchip Technology | 106.3962 |
Min: 1 Mult: 1 |
0.00000000 | download | 2 Weeks | 2011 | PICtail™ Plus | Active | 1 (Unlimited) | 9V | ROHS3 Compliant | Lead Free | No SVHC | Yes | Interface | dsPIC | Power Line Communication/Modem (PLC, PLM) | Board(s), Cable(s) | AC Power Line Modem BPSK 6.0kbps | No | |||||||||||||||||||||||||||||||||||
![]() |
VSC9991-RYL-EFEC | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Active | Not Applicable | ||||||||||||||||||||||||||||||||||||||||||||||||||
![]() |
AC164131 | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 14 Weeks | Active | 1 (Unlimited) | 5V | ROHS3 Compliant | Lead Free | Serial, USB | No SVHC | Yes | Interface | PIC | USB | PICtail™ Plus | 16b | Board(s) | ||||||||||||||||||||||||||||||||||||
![]() |
EVB-LAN9313M | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 16 Weeks | Bulk | Obsolete | 1 (Unlimited) | ROHS3 Compliant | Lead Free | 100 | Yes | Interface | LAN9313 | Ethernet | LAN9313M | Board(s) | |||||||||||||||||||||||||||||||||||||||
![]() |
MIC2287-3-LED-EV | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | Bulk | 2005 | Discontinued | 1 (Unlimited) | 10V | ROHS3 Compliant | Yes | 2.5V~10V | MIC2287 | Board(s) | 1, Non-Isolated | ||||||||||||||||||||||||||||||||||||||||
![]() |
MA330040 | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 14 Weeks | Active | 1 (Unlimited) | Plug-In Module (PIM) | |||||||||||||||||||||||||||||||||||||||||||||||
![]() |
DV251001 | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 2 Weeks | Cable | 1999 | Active | 1 (Unlimited) | ROHS3 Compliant | Lead Free | No | CAN | No SVHC | Yes | Interface | CANbus Controller | MCP2510, MCP2515 | Board(s), Cable(s), Power Supply | Stand alone CAN Controller with SPI | Yes, MCU, 8-Bit | ||||||||||||||||||||||||||||||||||
![]() |
MCP46XXDM-PTPLS | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 12 Weeks | 2008 | PICtail™ Plus | Obsolete | 1 (Unlimited) | ROHS3 Compliant | Lead Free | No | No SVHC | Yes | Data Acquisition | PIC | Digital Potentiometer | MCP46xx | Board(s) | 2.7 ~ 5.5 V, 150ppm/°C | 1 Dual Pot, 10kOhms, 257 Taps, I2C Interface | No | |||||||||||||||||||||||||||||||||
![]() |
KSZ8051MLL-EVAL | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | Bulk | 2010 | Obsolete | 1 (Unlimited) | 85°C | -40°C | 1.2V | ROHS3 Compliant | Lead Free | LQFP | Ethernet | No SVHC | Yes | Interface | Ethernet PHY | KSZ8051MLL | Board(s) | No | |||||||||||||||||||||||||||||||||
![]() |
MA180027 | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 14 Weeks | 2010 | Active | 1 (Unlimited) | 125°C | -40°C | 5.5V | Plug-In Module (PIM) | ROHS3 Compliant | Lead Free | No | Module | I2C, SPI | No SVHC | Yes | PIC | 8b | ||||||||||||||||||||||||||||||||||
![]() |
XLT08SO | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | Socket | 2010 | Obsolete | 1 (Unlimited) | 8 | 8 | Transition Socket | Non-RoHS Compliant | Contains Lead | No | SMD/SMT | Yes | |||||||||||||||||||||||||||||||||||||||
![]() |
ADM00811 | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 14 Weeks | 2015 | Active | 1 (Unlimited) | ROHS3 Compliant | 1.05V 1.1V 1.25V 1.8V 1.8V or 12V | 2.4V~5.5V | 3A 1A 800mA 500mA 500mA or 200mA | 2MHz | DC/DC, Step Up or Down | MIC74005 | Board(s) | Fully Populated | 6, Non-Isolated | Buck-Boost | ||||||||||||||||||||||||||||||||||||
![]() |
ATAVR-SOAKIT | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 16 Weeks | 2012 | AVR® | Obsolete | 1 (Unlimited) | 2.5V | Standoff | ROHS3 Compliant | Lead Free | No SVHC | AVR | |||||||||||||||||||||||||||||||||||||||||
![]() |
MSLB9082DBB | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | Tube | 2011 | Obsolete | 3 (168 Hours) | ROHS3 Compliant | Dimmable, I2C Interface | 10V~16V | MSL3162 | Board(s) | 8, Non-Isolated | |||||||||||||||||||||||||||||||||||||||||
![]() |
VSC9990-PHYLHM | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Active | Not Applicable | License | |||||||||||||||||||||||||||||||||||||||||||||||||
![]() |
VSC9990-MSLI | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Active | 3 (168 Hours) | Non-RoHS Compliant | |||||||||||||||||||||||||||||||||||||||||||||||||
![]() |
ATA6870-DK | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 1997 | Obsolete | 1 (Unlimited) | ROHS3 Compliant | Yes | Power Management | 3.3V | 20mA | Battery Monitor | ATA6870 | Board(s) | ||||||||||||||||||||||||||||||||||||||||
![]() |
SW007023 | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 10 Weeks | Active | Not Applicable | ROHS3 Compliant | Yes | Integrated Development Environment (IDE) | Design, Simulation | dsPIC | Windows 7 | Electronically Delivered | ||||||||||||||||||||||||||||||||||||||||||
![]() |
ATADAPCAN01 | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 2002 | Obsolete | 1 (Unlimited) | CAN Adapter | ROHS3 Compliant | Lead Free | Module | CAN | No SVHC | Yes | AVR | ||||||||||||||||||||||||||||||||||||||||
![]() |
ATA6834-DK | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 4 Weeks | 2011 | Active | 1 (Unlimited) | ROHS3 Compliant | LIN, UART | Yes | Power Management | Motor Controller/Driver | ATA6833 / ATA6834, ATmega32M1 | Board(s) | Yes, MCU, 8-Bit | ||||||||||||||||||||||||||||||||||||||||
![]() |
KSZ8893FQL-EVAL | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | Obsolete | 1 (Unlimited) | ROHS3 Compliant | Interface | Ethernet Controller (PHY and MAC) | KSZ8893FQL | Board(s) | No | |||||||||||||||||||||||||||||||||||||||||||
![]() |
AC164408 | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 14 Weeks | 2017 | MPLAB® PM3 | Active | 1 (Unlimited) | Non-RoHS Compliant | Socket Module - DFN/QFN | ||||||||||||||||||||||||||||||||||||||||||||
![]() |
DEMOBOARD-U4037B | Microchip Technology | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 2016 | Obsolete | 1 (Unlimited) | Non-RoHS Compliant | Telecom | U4037B | Board(s) |
-
-
MA330025-3 Microchip Technology
MA330025-3 datasheet pdf and Accessories product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
EVB9311 Microchip Technology
EVB9311 datasheet pdf and Evaluation and Demonstration Boards and Kits product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
ATBNO055-XPRO Microchip Technology
SMART ARM Based Microcontroller BNO055 Xplained Pro Extension Kit
Price: 0.0000
RFQ -
PS5163 Microchip Technology
PS5163 datasheet pdf and Evaluation and Demonstration Boards and Kits product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
MA180033 Microchip Technology
MA180033 datasheet pdf and Accessories product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
AT73C204-EK Microchip Technology
AT73C204-EK datasheet pdf and Evaluation and Demonstration Boards and Kits product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
AC164145 Microchip Technology
AC164145 datasheet pdf and Evaluation and Demonstration Boards and Kits product details from Microchip Technology stock available at Utmel
Price: 106.3962
RFQ -
-
AC164131 Microchip Technology
MICROCHIP AC164131 PICTAIL PLUS, USB, DAUGHTER BOARD
Price: 0.0000
RFQ -
EVB-LAN9313M Microchip Technology
EVB-LAN9313M datasheet pdf and Evaluation and Demonstration Boards and Kits product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
-
MA330040 Microchip Technology
MA330040 datasheet pdf and Accessories product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
DV251001 Microchip Technology
DV251001 datasheet pdf and Evaluation and Demonstration Boards and Kits product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
MCP46XXDM-PTPLS Microchip Technology
MCP46XXDM-PTPLS datasheet pdf and Evaluation and Demonstration Boards and Kits product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
KSZ8051MLL-EVAL Microchip Technology
KSZ8051MLL-EVAL datasheet pdf and Evaluation and Demonstration Boards and Kits product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
-
XLT08SO Microchip Technology
XLT08SO datasheet pdf and Accessories product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
-
ATAVR-SOAKIT Microchip Technology
ATAVR-SOAKIT datasheet pdf and Accessories product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
MSLB9082DBB Microchip Technology
LED Lighting Development Tools Compact 8-Channel LED Driver
Price: 0.0000
RFQ -
-
-
ATA6870-DK Microchip Technology
ATA6870-DK datasheet pdf and Evaluation and Demonstration Boards and Kits product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
-
ATADAPCAN01 Microchip Technology
ATMEL ATADAPCAN01 EXT BOARD, CAN, FOR STK500, STK501
Price: 0.0000
RFQ -
ATA6834-DK Microchip Technology
ATA6834-DK datasheet pdf and Evaluation and Demonstration Boards and Kits product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
KSZ8893FQL-EVAL Microchip Technology
KSZ8893FQL-EVAL datasheet pdf and Evaluation and Demonstration Boards and Kits product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ -
-
DEMOBOARD-U4037B Microchip Technology
DEMOBOARD-U4037B datasheet pdf and Evaluation and Demonstration Boards and Kits product details from Microchip Technology stock available at Utmel
Price: 0.0000
RFQ


























Need Help?

