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SRF0703-680M

INDUCT ARRAY 2 COIL 68UH SMD

Product Category: Arrays, Signal Transformers
Mfr. Part #
SRF0703-680M
Manufacturer: Bourns
Package: Nonstandard
Lead Free Status /RoHS Status:
Data Sheet: SRF0703-680M Datasheet
Inventory: In Stock

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Mfr. Part #: SRF0703-680M

Specifications
Product Details

Specifications

Manufacturer Bourns

Product Category Arrays, Signal Transformers

Series SRF0703

Product SMD Power Inductors

Type Dual-Winding Shielded Power Inductors

Packaging Alternate Packaging

Mounting-Style SMD/SMT

Termination-Style SMD/SMT

Operating-Temperature-Range - 40 C to + 105 C

Height 0.142" (3.60mm)

Length 7.6 mm

Width 7.6 mm

Package-Case Nonstandard

Operating-Temperature -40Â°C ~ 125Â°C

Mounting-Type Surface Mount

Size-Dimension 0.299" L x 0.299" W (7.60mm x 7.60mm)

Tolerance Â±20%

Shielding Shielded

Number-of-Coils 2 Coils

Inductance-Connected-In-Series 272Î¼H

Inductance-Connected-In-Parallel 68Î¼H

Current Rating 890mA

Series Rating 444mA

Saturation Current 960mA

Saturation current 480mA

DC-Resistance-DCR-Parallel 507 mOhm Max

DC resistance (DCR) 1.92 Ohm Max

Maximum-DC-Current 890 mA

Maximum-DC-Resistance 507 mOhms

Core-Material Ferrite

Inductance-Parallel 68 uH

Inductance-Series 272 uH

Product Details

[robot-electronics]

This project started after I looked at the Polaroid Ultrasonic Ranging module. It has a number of disadvantages for use in small robots etc.

1. The maximum range of 10.7 metre is far more than is normally required, and as a result

2. The current consumption, at 2.5 Amps during the sonic burst is truly horrendous.
3. The 150mA quiescent current is also far too high.
4. The minimum range of 26cm is useless. 1-2cm is more like it.
5. The module is quite large to fit into small systems, and
6. Itâ€™s EXPENSIVE.

The SRF04 Timing diagram is shown below. You only need to supply a short 10uS pulse to the trigger input to start the ranging. The SRF04 will send out an 8 cycle burst of ultrasound at 40khz and raise its echo line high. It then listens for an echo, and as soon as it detects one it lowers the echo line again. The echo line is therefore a pulse whose width is proportional to the distance to the object. By timing the pulse it is possible to calculate the range in inches/centimeters or anything else. If nothing is detected then the SRF04 will lower its echo line anyway after about 36mS.

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Mfr. Part #: SRF0703-680M