EMI FILTER/TVS DIODE, 5.25V, SOT-23

STF201-22.TCT

Manufacturer Part NumberSTF201-22.TCT
DescriptionEMI FILTER/TVS DIODE, 5.25V, SOT-23
ManufacturerSemtech
STF201-22.TCT datasheet
 


Specifications of STF201-22.TCT

Diode TypeBidirectional TVSOperating Voltage5.25V
Diode Case StyleSOT-23No. Of Pins6
Junction Capacitance47pFBreakdown Voltage Min6V
Capacitance, Cd47pFBreakdown Voltage Vbr6V
Lead Free Status / RoHS StatusLead free / RoHS Compliant  
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PROTECTION PRODUCTS
PROTECTION PRODUCTS
Description
The STF201 is a combination EMI filter and line termi-
nation device with integrated TVS diodes for use on
downstream USB ports. It is constructed using a
proprietary technology that allows passive components
and TVS diodes to be integrated in the same package.
Each device will provide termination, filtering, and ESD
protection for one downstream USB port. The STF201
is an easily implemented solution for meeting the
requirements of revision 1.1 of the Universal Serial Bus
specification.
USB line termination is achieved with series 22
30
resistors on both the D+ and D- USB lines. These
resistors preserve signal integrity by matching the cable
impedance to that of the differential driver. The 15k
pull-down resistors complete the termination circuit on
each line. They are required by the USB specification
to identify the line as a downstream connection. The
47pF capacitors are used to bypass high frequency
energy to ground and for edge rate control of the USB
signals. Finally, the STF201 contains TVS diodes for
ESD protection of both (D+ & D-) data lines and the
voltage bus (V
). The TVS diodes provide effective
BUS
suppression of ESD voltages in excess of 15kV (air
discharge) and 8kV (contact discharge) per IEC 61000-
4-2, level 4.
The small size and integrated feature of the STF201
minimizes required board space and increases system
reliability. The pin-out of the device allows easy imple-
mentation. The STF201 is suitable for use in USB
hubs, computers, peripherals, and portable devices.
Circuit Diagram
Revision 08/11/04
STF201-22 & STF201-30
USB Downstream Port Filter & TVS
For EMI Filtering and ESD Protection
Features
Bidirectional EMI/RFI filtering and line termination
with integrated ESD protection
ESD protection for USB power (V
(D+ & D-) to IEC 61000-4-2 Level 4
Filtering and termination for two USB data lines
Different series resistors for impedance matching
Low TVS operating voltage (5.25V)
Low leakage current
Low capacitance
Solid-state technology
or
Mechanical Characteristics
EIAJ SOT23-6L package
Molding compound flammability rating: UL 94V-0
Marking : Marking Code
Packaging : Tape and Reel per EIA 481
Applications
USB Hubs
Portable electronics
Printers
Monitors
Servers, Desktop, and Notebook computers
Pin Configuration
S0T23-6L (Top View)
1
) and data lines
BUS
www.semtech.com

STF201-22.TCT Summary of contents

  • Page 1

    ... PROTECTION PRODUCTS PROTECTION PRODUCTS Description The STF201 is a combination EMI filter and line termi- nation device with integrated TVS diodes for use on downstream USB ports constructed using a proprietary technology that allows passive components and TVS diodes to be integrated in the same package. ...

  • Page 2

    ... PROTECTION PRODUCTS PROTECTION PRODUCTS Absolute Maximum Rating Electrical Characteristics 2004 Semtech Corp ° ° STF201-22 & STF201- www.semtech.com ° C ° C ° µ A µ ...

  • Page 3

    ... PROTECTION PRODUCTS Typical Characteristics ESD Clamping (8kV Contact) Typical Insertion Loss 0 dB -10 dB -20 dB 0.030MHz 2004 Semtech Corp. STF201-22 & STF201-30 ESD Clamping (15kV Air) Analog Crosstalk ( -20 dB -60 dB 0.030 MHz 2.0GHz 3 1 GHz www.semtech.com ...

  • Page 4

    ... Avoid running critical signal lines near board edges. Locate the USB controller chip physically near the USB connectors. Place the STF201 near the USB connector to restrict transient coupling. Minimize the path length between the USB connec- tor and the STF201 as well as between the USB controller and the STF201 ...

  • Page 5

    ... PROTECTION PRODUCTS Applications Information 2004 Semtech Corp. STF201-22 & STF201-30 Figure 3 - USB Port Components Figure 4 - Typical USB Hub Design 5 www.semtech.com ...

  • Page 6

    ... CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. 2004 Semtech Corp GAGE PLANE 0.25 L (L1) A DETAIL A SEE DETAIL SIDE VIEW - STF201-22 & STF201-30 DIMENSIONS INCHES MILLIMETERS DIM MIN NOM MAX MIN NOM MAX - A .057 0.90 .035 - A1 .000 .006 0. .035 .045 ...

  • Page 7

    ... PROTECTION PRODUCTS Marking Codes Ordering Information Contact Information Phone: (805)498-2111 FAX (805)498-3804 2004 Semtech Corp Semtech Corporation Protection Products Division 200 Flynn Road, Camarillo, CA 93012 7 STF201-22 & STF201-30 www.semtech.com ...