12.75 mm wedge
12.75 × 5.71 × 3.1 mm
Mini wedge source; LF chip options. [1]
RFID Tags · RFIDAK
LF RFID Wedge Transponders
Rigid LF wedge transponders are compact components for embedding in keys or molded parts. Published housings measure 12.75 × 5.71 × 3.1 mm or 12.15 × 5.71 × 3.1 mm; select the actual drawing rather than treating them as one size.
Updated September 24, 2026
- Housing
- ABS
- Radio band
- LF, 125 kHz reference
- Chip choices
- T5577, EM4200, TK4100 or Hitag configuration; capabilities differ
Technical reference
Product specifications
Model-specific data and source scope are shown together.
Choose a reference
Models & configurations
Choose a model or format to include it in your quote or sample request.
12.15 mm wedge
12.15 × 5.71 × 3.1 mm
Separate T5577 reference; −20 to +85 °C working range. [2]
Appearance & construction
Photos & drawings
Open a picture to inspect the original file. Dimensions are taken from the cited references.
Application & selection
Before choosing this product
Does this program a vehicle key?
A wedge-shaped housing does not establish immobilizer compatibility. T5577 access identifiers, EM identifier chips and automotive transponder systems use different coding and enrollment. Give the required chip and key-system specification.
Why are there two lengths?
The published references differ by 0.60 mm. Treat each as a separate enclosure option; a mold designed around the shorter part may not accept the longer part.
Sources & documents
Technical references
Published specifications identify the reference model. They do not replace the final order drawing or a model-specific test report.
- Mini wedge reference ↗
Manufacturer reference · reviewed 2026-09-20
- T5577 wedge reference ↗
Manufacturer reference · reviewed 2026-09-20
Custom orders & samples
Request your configuration
Choose the reference, then add quantity, destination, chip or reader details and any artwork on the enquiry page.