Items : %s%s
SAW Filters
Additional Feature
- AEC-Q200; TR, 7/13 INCH; TEMPERATURE OF -40 TO 85 ALSO AVAILABLE
- HIGH SELECTIVITY; TAPE AND REEL
- TAPE AND REEL
- TR
- TR, 13 INCH
- TR, 7 INCH
- TR, 7/13 INCH
Applications
- -
- Base Station
- Base Stations
- Bluetooth
- Bluetooth, WLAN
- Cable Converters
- CDMA, LTE
- CDMA, WCDMA
- CDMA, WCDMA, LTE
- Cell Phone
- Cellular
- Cellular, CDMA
- Cellular, GSM
- Cellular, LTE
- Cellular, LTE, SCDMA
- Cellular, LTE, UMTS, WCDMA
- Cellular, LTE, WCDMA
- Cellular, SCDMA
- Cellular, TDMA
- Cellular, WCDMA
- DAB
- DCS
- DCS, GSM
- Digital Cable Filter
- General Purpose
- GPS
- GSM
- HDTV
- HiperLAN
- iDEN Systems
- IF
- ISDB-T
- ISM
- Lab Use
- LTE, SCDMA
- LTE, WLAN
- Medical
- Meter Reading
- PCN
- PCS
- Radio
- Remote Control
- Remote Keyless Entry
- Satellite Receiver
- SCDMA, LTE
- SDARS
- Set-Top Boxes
- TETRA
- TRC103 Transceiver
- TRC105 Transceiver
- TV
- UHF
- UMTS
- Video
- Wide Channel
- WiMax
- Wireless
- Wireless Audio
- Wireless LAN
- WLAN
- WLL
- XM Radio
Capacitance
- 0F
- 220uF
- 3.6pF
Contact Plating
- Gold
Factory Lead Time
- 1 Weeks
- 10 Weeks
- 11 Weeks
- 12 Weeks
- 13 Weeks
- 14 Weeks
- 15 Weeks
- 16 Weeks
- 17 Weeks
- 18 Weeks
- 7 Weeks
- 8 Weeks
- 9 Weeks
JESD-609 Code
- e4
Lifecycle Status
- TO BE DISCONTINUED (Last Updated: 1 month ago)
- TO BE DISCONTINUED (Last Updated: 2 weeks ago)
- TO BE DISCONTINUED (Last Updated: 3 weeks ago)
- TO BE DISCONTINUED (Last Updated: 4 weeks ago)
Max Operating Temperature
- 100°C
- 105°C
- 120°C
- 125°C
- 50°C
- 60°C
- 70°C
- 75°C
- 80°C
- 85°C
- 90°C
- 95°C
Mfr
- Abracon LLC
- Murata Electronics
- Qualcomm (RF front-end (RFFE) filters)
- Raltron Electronics
- Taiyo Yuden
Min Operating Temperature
- -10°C
- -20°C
- -25°C
- -30°C
- -35°C
- -40°C
- -45°C
- -55°C
- 0°C
Moisture Sensitivity Level (MSL)
- 1 (Unlimited)
- 2 (1 Year)
- 2A (4 Weeks)
- 3 (168 Hours)
- 6 (Time on Label)
- Vendor Undefined
Mount
- Free Hanging
- Surface Mount
- Surface Mount, Through Hole
- Through Hole
Mounting Type
- Free Hanging (In-Line)
- Surface Mount
- Through Hole
- THROUGH HOLE MOUNT
Number of Functions
- 1
Number of Pins
- 10
- 12
- 2
- 3
- 4
- 5
- 6
- 8
Number of Terminals
- 12
Number of Terminations
- 10
- 5
- 6
Package / Case
- 0404 (1010 Metric)
- 10-DIP (0.500, 12.70mm)
- 10-SMD Module, No Lead
- 10-SMD, No Lead
- 12-SMD, No Lead
- 13-SMD, No Lead
- 14-SMD, No Lead, 10 Pads
- 4-SMD, No Lead
- 5-SIP
- 5-SMD, No Lead
- 6-SMD, No Lead
- 8-SMD, No Lead
- 9-SMD, No Lead
- Inline, SMA Connection, F and M
- SMD/SMT
- TO-205AD, TO-39-3 Metal Can
- TO-39-3
Packaging
- Bulk
- Cut Tape (CT)
- Digi-Reel®
- Tape & Reel
- Tape & Reel (TR)
- Tape and Reel
- Tray
- Tube
Part Status
- Active
- Discontinued
- Last Time Buy
- Not For New Designs
- Obsolete
Pbfree Code
- yes
Published
- 1997
- 1999
- 2001
- 2002
- 2003
- 2004
- 2005
- 2006
- 2007
- 2008
- 2009
- 2010
- 2011
- 2012
- 2013
- 2014
- 2015
- 2016
- 2017
Resistance
- 100Ohm
- 1K Ohms
- 50Ohm
- 670Ohm
- 782MOhm
- 897.5MOhm
- 90 Ohms
- 942.5MOhm
Series
- *
- -
- B1649
- B1650
- B1665
- B1666
- B1667
- B1668
- B1675
- B1677
- B1706
- B1720
- B1726
- B1727
- B1728
- B1729
- B2625
- B2672
- B3421
- B3741
- B3743
- B3881
- B3882
- B3883
- B3909
- B3921
- B39212B
- B39232B
- B3949
- B3962
- B39871
- B4311
- B4314
- B4336
- B4346
- B4347
- B4348
- B4353
- B4360
- B4362
- B4377
- B4379
- B4381
- B4847
- B4960
- B5008
- B5072
- B5104
- B5125
- B5139
- B5156
- B5166
- B5235
- B5261
- B5262
- B7675
- B7750
- B7840
- B7848
- B7926
- B7942
- B8013
- B8307
- B8328
- B8666
- B8741
- B8745
- B8763
- B8813
- B8828
- B8839
- B8840
- B8850
- B8852
- B8857
- B9468
- B9471
- B9487
- B9490
- B9521
- B9628
- B9634
- B9815
- B9877
- CBPFS
- D5
- DLW21HN
- DXP
- EFCH
- EMIFIL?,BLM18
- EMIFIL?,BLM21
- F5
- F6
- FA
- FSFC
- FSSC
- G5
- G6
- G6000
- H6
- LFB
- PAFC, Kyocera
- PCI0735T
- R1900
- R1950
- RSD
- RSF
- SD25, Kyocera
- SF, Kyocera
- TPX
- X3403
Size / Dimension
- 0.043Lx0.035W 1.09mmx0.89mm
- 0.043Lx0.035W 1.10mmx0.90mm
- 0.055Lx0.039W 1.40mmx1.00mm
- 0.055Lx0.043W 1.40mmx1.09mm
- 0.055Lx0.043W 1.40mmx1.10mm
- 0.057Lx0.045W 1.45mmx1.15mm
- 0.059Lx0.043W 1.50mmx1.10mm
- 0.063Lx0.055W 1.60mmx1.40mm
- 0.067Lx0.051W 1.70mmx1.30mm
- 0.071Lx0.055W 1.80mmx1.40mm
- 0.079Lx0.055W 2.00mmx1.40mm
- 0.079Lx0.059W 2.00mmx1.50mm
- 0.079Lx0.063W 2.00mmx1.60mm
- 0.079Lx0.079W 2.00mmx2.00mm
- 0.098Lx0.079W 2.50mmx2.00mm
- 0.118Lx0.098W 3.00mmx2.50mm
- 0.118Lx0.118W 3.00mmx3.00mm
- 0.150Lx0.150W 3.80mmx3.80mm
- 0.197Lx0.118W 5.00mmx3.00mm
- 0.197Lx0.197W 5.00mmx5.00mm
- 0.276Diax0.197L 7.00mmx5.00mm
- 0.276Lx0.197W 7.00mmx5.00mm
- 0.287Lx0.240W 7.30mmx6.10mm
- 0.358Lx0.280W 9.09mmx7.11mm
- 0.360Lx0.189W 9.15mmx4.80mm
- 0.370Dia 9.40mm
- 0.374Dia 9.50mm
- 0.425Lx0.150W 10.80mmx3.80mm
- 0.435Diax1.313L 11.05mmx33.34mm
- 0.449Lx0.209W 11.40mmx5.30mm
- 0.524Lx0.256W 13.30mmx6.50mm
- 0.524Lx0.256W 13.31mmx6.50mm
- 0.539Lx0.189W 13.70mmx4.80mm
- 0.681Lx0.154W 17.30mmx3.90mm
- 0.728Lx0.500W 18.50mmx12.70mm
- 0.748Lx0.256W 19.00mmx6.50mm
Subcategory
- SAW Filters
Terminal Finish
- GOLD
- Gold (Au)
- GOLD OVER NICKEL
Termination
- Radial
- Screw
- SMD/SMT
Tolerance
- ±20%
- ±25%
Type
- IF
Voltage - Rated
- 12V
- 30V
- 3V
- 4V
- 5V
- 6V
Voltage - Rated DC
- 10V
- 3V
- 7.5V
| 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) | RoHS Status | Number of Pins | Package / Case | Mounting Type | Size / Dimension | Bandwidth | Ratings | Height (Max) | Insertion Loss | Applications | Frequency - Cutoff or Center | Load Impedance |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |
B39171B5060H810 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Tape & Reel (TR) | Obsolete | 1 (Unlimited) | 12-SMD, No Lead | Surface Mount | 0.276Lx0.197W 7.00mmx5.00mm | 0.051 1.30mm | |||||||||||||||
|
B39182B9810P810A99 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Bulk | Obsolete | 1 (Unlimited) | |||||||||||||||||||
 |
B39351B5073Z810 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 9 Weeks | Tape & Reel (TR) | 2014 | Active | 1 (Unlimited) | ROHS3 Compliant | 8-SMD, No Lead | Surface Mount | 0.150Lx0.150W 3.80mmx3.80mm | 10MHz | 0.059 1.50mm | 1.8dB | TETRA | 355MHz | ||||||||
 |
B39192B4176U510 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Tape & Reel (TR) | Obsolete | 1 (Unlimited) | 6-SMD, No Lead | Surface Mount | 0.098Lx0.079W 2.50mmx2.00mm | 60MHz | 0.032 0.80mm | 2.6dB | Cellular, WCDMA | 1.95GHz | |||||||||||
|
B39971B1651B510 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Bulk | Obsolete | Vendor Undefined | |||||||||||||||||||
|
B39202B4381P810 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Tape & Reel (TR) | 2014 | B4381 | Obsolete | 1 (Unlimited) | 10-SMD, No Lead | Surface Mount | 0.059Lx0.043W 1.50mmx1.10mm | 60MHz 75MHz | AEC-Q200 | 0.016 0.40mm | 1.5dB | Cellular, GSM | 1.8425/1.96GHz | ||||||||
|
B39122B1610U810 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | Tape & Reel (TR) | 2014 | Obsolete | 1 (Unlimited) | ROHS3 Compliant | 8-SMD, No Lead | Surface Mount | 0.118Lx0.118W 3.00mmx3.00mm | 8MHz | 0.043 1.10mm | 3.6dB | Digital Cable Filter | 1.22GHz | ||||||||
|
B39212B9411K610S99 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Bulk | Obsolete | 1 (Unlimited) | |||||||||||||||||||
|
B39182B4152U510 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Tape & Reel (TR) | Obsolete | 1 (Unlimited) | 6-SMD, No Lead | Surface Mount | 0.118Lx0.118W 3.00mmx3.00mm | 75MHz | 0.043 1.10mm | 3dB | Cell Phone | 1.843GHz | |||||||||||
|
B39761B3409U410 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Tape & Reel (TR) | Obsolete | 1 (Unlimited) | |||||||||||||||||||
|
B39751B4318P810 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Tape & Reel (TR) | Active | 1 (Unlimited) | ROHS3 Compliant | 5-SMD, No Lead | Surface Mount | 0.055Lx0.043W 1.40mmx1.10mm | 10MHz | AEC-Q200 | 0.016 0.40mm | 2.2dB | Cellular, LTE | 751MHz | |||||||||
 |
B39162B9037E910 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | Tape & Reel (TR) | 2012 | Obsolete | 3 (168 Hours) | 4-SMD, No Lead | Surface Mount | 0.079Lx0.063W 2.00mmx1.60mm | 2MHz | 0.027 0.68mm | 0.9dB | GPS | 1.575GHz | |||||||||
|
B39941B9802J610S5 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Bulk | Obsolete | 1 (Unlimited) | |||||||||||||||||||
|
B39941B7675P810S3 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Tray | Obsolete | 1 (Unlimited) | |||||||||||||||||||
|
B39321R1901A310 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Tape & Reel (TR) | Active | 1 (Unlimited) | ROHS3 Compliant | 6-SMD, No Lead | Surface Mount | 0.118Lx0.118W 3.00mmx3.00mm | AEC-Q200 | 0.043 1.10mm | 1.4dB | General Purpose | |||||||||||
|
B39202B8823P810 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Tape & Reel (TR) | Active | 3 (168 Hours) | ROHS3 Compliant | 5-SMD, No Lead | Surface Mount | 0.043Lx0.035W 1.10mmx0.90mm | 65MHz | 0.018 0.45mm | 2.5dB | Cellular, WCDMA | |||||||||||
|
B39901B1672B510 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Bulk | Obsolete | Vendor Undefined | |||||||||||||||||||
 |
B39162B7840C710 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | Cut Tape (CT) | 2010 | Obsolete | 3 (168 Hours) | 5-SMD, No Lead | Surface Mount | 0.079Lx0.055W 2.00mmx1.40mm | 2MHz | 0.027 0.68mm | 1.2dB | GPS | 1.575GHz | |||||||||
|
B39211B3817Z710 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | Tape & Reel (TR) | Obsolete | 1 (Unlimited) | 10-SMD, No Lead | Surface Mount | 0.360Lx0.189W 9.15mmx4.80mm | 3.84MHz | 0.063 1.60mm | 11.7dB | Cellular, WCDMA | 208MHz | ||||||||||
|
B39202B9453P810 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Surface Mount | Bulk | Obsolete | 1 (Unlimited) | RoHS Compliant | 5 | 5-SMD, No Lead | Surface Mount | 0.055Lx0.043W 1.40mmx1.10mm | 15MHz | 0.016 0.40mm | 1.9dB | Cellular, SCDMA | 50Ohm | ||||||||
|
B39242B4347P810 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 9 Weeks | Tape & Reel (TR) | B4347 | Active | 2A (4 Weeks) | ROHS3 Compliant | 5-SMD, No Lead | Surface Mount | 0.055Lx0.043W 1.40mmx1.10mm | 83.5MHz | AEC-Q200 | 0.018 0.45mm | 1.8dB | Bluetooth, WLAN | 2.442GHz | ||||||
|
B39431B3743H110 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 10 Weeks | Tape & Reel (TR) | 2014 | Active | 1 (Unlimited) | ROHS3 Compliant | 6-SMD, No Lead | Surface Mount | 0.118Lx0.118W 3.00mmx3.00mm | 340kHz | AEC-Q200 | 0.039 1.00mm | 1.9dB | Remote Control | 433.92MHz | |||||||
|
B38202W1054W310 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Tape & Reel (TR) | Obsolete | 1 (Unlimited) | General Purpose | ||||||||||||||||||
|
B39161B5204H810 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | Tape & Reel (TR) | 2015 | Obsolete | 1 (Unlimited) | 10-SMD, No Lead | Surface Mount | 0.276Lx0.197W 7.00mmx5.00mm | 23.8MHz | 0.052 1.33mm | 7.5dB | Base Stations | 164MHz | |||||||||
|
B39471B3937Z810 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Tape & Reel (TR) | Obsolete | 1 (Unlimited) | |||||||||||||||||||
|
B39202B9605P810 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Bulk | Obsolete | 1 (Unlimited) | |||||||||||||||||||
|
B39172B5121U410W3 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Tape & Reel (TR) | Obsolete | 1 (Unlimited) | |||||||||||||||||||
|
B39588N9260M100 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | Bulk | Obsolete | 1 (Unlimited) | 5-SIP | Through Hole | 0.681Lx0.154W 17.30mmx3.90mm | 0.343 8.70mm | 20.1dB | TV | 58.75MHz | |||||||||||
|
B39841B4311P810 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 10 Weeks | Tape & Reel (TR) | B4311 | Active | 1 (Unlimited) | ROHS3 Compliant | 5-SMD, No Lead | Surface Mount | 0.055Lx0.043W 1.40mmx1.10mm | 25MHz | AEC-Q200 | 0.016 0.40mm | 1.7dB | General Purpose | 836.5MHz | |||||||
|
B39212B9411K610S6 | Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Bulk | Obsolete | 1 (Unlimited) |
-
B39171B5060H810 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
FILTER SAW 167MHZ 12SMD
Price: 0.0000
RFQ -
-
B39351B5073Z810 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
FILTER SAW 355MHZ 8SMD
Price: 0.0000
RFQ -
B39192B4176U510 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
FILTER SAW 1.95GHZ 6SMD
Price: 0.0000
RFQ -
B39971B1651B510 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
SAW FILTER FOR IND ELECTRONICS
Price: 0.0000
RFQ -
B39202B4381P810 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
FILTER SAW 1.8425/1.96GHZ 10SMD
Price: 0.0000
RFQ -
B39122B1610U810 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
Signal Conditioning RF FILTER 1220 MHZ
Price: 0.0000
RFQ -
-
B39182B4152U510 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
FILTER SAW 1.843GHZ 6SMD
Price: 0.0000
RFQ -
-
B39751B4318P810 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
FILTER SAW 751MHZ 5SMD
Price: 0.0000
RFQ -
B39162B9037E910 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
FILTER SAW 1.575GHZ 4SMD
Price: 0.0000
RFQ -
-
-
-
-
B39901B1672B510 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
SAW FILTER FOR IND ELECTRONICS
Price: 0.0000
RFQ -
B39162B7840C710 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
FILTER SAW 1.575GHZ 5SMD
Price: 0.0000
RFQ -
B39211B3817Z710 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
FILTER SAW 208MHZ 10SMD
Price: 0.0000
RFQ -
B39202B9453P810 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
B39202B9453P810 datasheet pdf and SAW Filters product details from Qualcomm (RF360 - A Qualcomm & TDK Joint Venture) stock available at Utmel
Price: 0.0000
RFQ -
-
B39431B3743H110 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
FILTER SAW 433.92MHZ 6SMD
Price: 0.0000
RFQ -
B38202W1054W310 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
MOBILE SAW FILTER 1006
Price: 0.0000
RFQ -
B39161B5204H810 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
FILTER SAW 164MHZ 10SMD
Price: 0.0000
RFQ -
-
-
-
B39588N9260M100 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
FILTER SAW 58.75MHZ 5SIP
Price: 0.0000
RFQ -
B39841B4311P810 Qualcomm (RF360 - A Qualcomm & TDK Joint Venture)
FILTER SAW 836.5MHZ 5SMD
Price: 0.0000
RFQ -
Need Help?
