7050 7x5mm Golledge SMD Filter package

GSF-75 45R12B

45MHz 4 pole crystal filter with 12.0kHz 3dB bandwidth

  • 4 pole filter in one package
  • 45MHz centre frequency
  • Custom specifications available
  • Miniature SM package
Configurable Options
ParameterOption Code

The GSF-75 45R12B has no configurable options.
Please see the specifications table for more details or contact our team today if you have other specification requirements.

Quantity / Special Request

Please specify the quantity you require below.

The 45R12B is supplied on tape and reel. 1k pcs per reel is the standard T&R pack size for this product. Partial quantities may be supplied on tape (no reel), or in bulk.

Product Description

The 45R12B with centre frequency of 45.0MHz packs four poles within just one miniature surface mount package measuring just 7.2 x 5.2mm. Advanced space-saving tehcnology means compared with traditional two-package four-pole filters ths 45R12B can offer the engineer much greater board space for their design. With passband bandwidth of 12kHz at 3dB, the 45R12B also has low insertion loss of only 3.0dB and has guarenteed attenuation of -90±10 @ 80dB. Low in-band ripple of only 1.0dB ensures high signal fidelity.

Centre frequency 45.0MHz
Dimensions 7.2 x 5.2 x 1.5mm
Operating temperature range -20 to +70°C
Number of poles 4
Pass band -3dB @ ±6.0kHz min
Attenuation band -30dB @ ±20.0kHz max
In-band ripple 1.0dB max
Insertion loss 3.0dB max
Guaranteed attenuation -80dB max -910 ±10kHz
Termination 950Ω // 1.2pF
Coupling capacitance (CC) 8.0pF
Number of units 1
Package Drawing
Package footprint and configuration drawing for a 7050 6-pad Golledge 4-pole Crystal Filter showing full dimensions.
Ordering Information

To request a quotation for the GSF-75 45R12B please use the configurable options form to choose the options you require and then submit your configured product to our team. Our expert advisers are always happy to help with your requirements and can be contacted on +44 1460 256 100 or at sales@golledge.com.

Following product selection you will be issued with a seven character Golledge part number. Your Golledge part number is the internationally accepted Golledge manufacturing part number (MPN) that should be used for all project documentation, including bills of materials (BoMs) and purchase orders.

If you have any queries regarding any of our documentation our dedicated sales team will be happy to help.

CAD Models

Our GSF-75 45R12B is included in the following design libraries. Click to download the library of your choice.

Test Circuit
Test Circuit
Soldering Profile
Solder reflow profile
Tape & Reel Specification
Tape and Reel specifications

A:250 B:17.5 C:7.9 D:5.4 E:8.0 F1.7 G:80 H:21

Handling & Storage

ESD-HBM-1A Human Body Model (HBM) 1A (250V to <500V)

MSL1 Moisture Sensitivity Level (MSL): 1 (or not applicable)


Ceramic base with metal lid


PbFree Lead-free (< 0.1% by weight )

RoHS compliant with no exemptions RoHS compliant with no exemptions. See our declaration

REACH REACH compliant. See our statement

Conflict Minerals Statement Free of conflict minerals. See our declaration

Halogen Free Statement Free of Halogens. See our declaration

Ozone Depletion Statement Free of Ozone-depleting substances. See our declaration