• TW1145BBNL, 10/100 Base RJ45 with Transformer Tab Down with Green/Yellow Led - TeleWire Technology
  • TW1145BBNL, 10/100 Base RJ45 with Transformer Tab Down with Green/Yellow Led - TeleWire Technology
  • TWE271H229NL, RJ45 without Transformer Tab Down with Green&Orange/ Green Led - TeleWire Technology
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TW1145BBNL 10/100 Base-T RJ45 MagJack, Tab Down, Green/ Yellow LED

The TeleWire Technology TW1145BBNL is a 10/100 Base-T shielded RJ45 MagJack with integrated magnetics. Manufactured in Taiwan.

Cross Reference

  • Bothhand LU1S041A-43 LF — the TW1145BBNL cross-references to this part.
  • LINK-PP LPJ0034BBNL — same footprint, sourced outside mainland China.

Selection Notes

  • 10/100 Base-T — matched magnetics for this line rate, no external transformer.
  • Green/ Yellow LEDs — wired to the host PHY, not to internal logic.
  • Shielded shell without EMI fingers — the shield terminates through the PCB.
  • Integrated magnetics — isolation and common-mode choke inside the connector, not on the PCB.

Typical application: field devices where a 100 Mbit/s drop is the whole network requirement.

Pricing for the TW1145BBNL ranges from $0.50 to $3.00 USD depending on order quantity and configuration, with volume tiers available on request.

Validate the TW1145BBNL on your board first. Samples are available for design validation, and the mechanical drawing gives the footprint before you commit a layout. Request a sample or quotation.

Product Packaging Information

Package Tray (Reel packaging options available)
Carton size 32*30*31cm
Qty/carton 1200pcs
G.W/carton 8.5kg
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Product Specifications

RJ Type 8P8C(RJ45)
Ports 1x1
Speed 10/ 100 Base-T
Latch Type Down
LED Green/ Yellow
Shielding Shield
PCB Mount Type Through Hole
Orientation Right Angle (90°)
AutoMDIX Yes
PCB Material FR4
Contact Material Gold
Contact Plating Gold Flash/ 6u"/ 15u"/ 30u"/ 50u"
Certification RoHS Compliant
Product Length (Inches/mm) 0.839/ 21.30
Product Width (Inches/mm) 0.626/ 15.90
Product Height (Inches/mm) 0.528/ 13.40
Temperature 0℃ ~ 70℃
Compatible Brands Bothhand

Related jacks

Same family, different latch, LED or plating option.

Cost-Effective Alternatives for Major Brand RJ45 Jack

Facing long lead times or high costs from major connector brands? We provide high-quality, drop-in replacements for standard modular jacks from TE, Molex, Amphenol, and Wurth. Our connectors match industry-standard footprints and performance specs at a more competitive price point.

From Flash, 3µ", 6µ", 15µ", 30µ", to 50µ" gold plating
Share the drawing to get equivalent match
Short lead times and consistent manufacturing in Taiwan
100% tested for contact resistance and insulation integrity
Request Custom Quote

We reply within 24 hours. No account needed. Your specifications stay confidential; NDA available on request.

What is a Taiwan-made alternative to the Bothhand LU1S041A-43 LF?
The TW1145BBNL from TeleWire Technology cross-references to the Bothhand LU1S041A-43 LF and to LINK-PP LPJ0034BBNL. It is manufactured in Taiwan, giving buyers a supply route outside mainland China for the same footprint. Send the footprint you are designing against and TeleWire Technology will confirm compatibility.
Can the TW1145BBNL be built to a different configuration?
Yes. The standard TW1145BBNL ships with Green/ Yellow LEDs and a tab-down latch. TeleWire Technology can change LED colour, latch direction, contact plating thickness (Gold Flash through 50 microinch) and tray or reel packaging against your drawing, while holding the footprint that matches Bothhand LU1S041A-43 LF.
How do I qualify the TW1145BBNL as a second source?
Request a sample of the TW1145BBNL and the mechanical drawing from TeleWire Technology, then check the footprint against the Bothhand LU1S041A-43 LF on your board. TeleWire Technology builds in Taiwan under an ISO 9001 quality system, and its engineering team will review your drawing before you commit.