• TW1123G77NL, 10/100 Base Ethernet RJ45 with Transformer Tab Down Red&Green/ Red&Green Led - TeleWire Technology
  • TW1123G77NL, 10/100 Base Ethernet RJ45 with Transformer Tab Down Red&Green/ Red&Green Led - TeleWire Technology
  • TW1123G77NL, 10/100 Base Ethernet RJ45 with Transformer Tab Down Red&Green/ Red&Green Led - TeleWire Technology
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TW1123G77NL 10/100 Base-T RJ45 MagJack, Tab Down, Red&Green/ Red&Green LED

The TeleWire Technology TW1123G77NL is a 10/100 Base-T EMI-finger shielded RJ45 MagJack with integrated magnetics. Manufactured in Taiwan.

Cross Reference

  • Bel Fuse SI-60189-F — the TW1123G77NL cross-references to this part.
  • LINK-PP LPJ0012G66NL — same footprint, sourced outside mainland China.

Selection Notes

  • 10/100 Base-T — the interface rate the magnetics are matched to.
  • Red&Green/ Red&Green LEDs — wired to the host PHY, not to internal logic.
  • Integrated magnetics — isolation on all four pairs, short routing to the PHY.
  • EMI grounding fingers — chassis bond made at the bezel, not through the PCB.

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

Pricing for the TW1123G77NL ranges from $0.50 to $3.00 USD depending on order quantity and configuration, with volume tiers available on request.

Validate the TW1123G77NL 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 Red&Green/ Red&Green
Shielding Shield with EMI Finger
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 Belfuse

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 Bel Fuse SI-60189-F?
The TW1123G77NL from TeleWire Technology cross-references to the Bel Fuse SI-60189-F and to LINK-PP LPJ0012G66NL. 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 TW1123G77NL be built to a different configuration?
Yes. The standard TW1123G77NL ships with Red&Green/ Red&Green 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 Bel Fuse SI-60189-F.
How do I qualify the TW1123G77NL as a second source?
Request a sample of the TW1123G77NL and the mechanical drawing from TeleWire Technology, then check the footprint against the Bel Fuse SI-60189-F 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.