• TWL8140A321NL, 1000 Base Low-Profile RJ45 Modular Jack with Transformer Tab Up with Orange&Green/ Orange Led - side view
  • TWL8140A321NL, 1000 Base Low-Profile RJ45 Modular Jack with Transformer Tab Up with Orange&Green/ Orange Led - front view
  • TWL8140A321NL, 1000 Base Low-Profile RJ45 Modular Jack with Transformer Tab Up with Orange&Green/ Orange Led - back view
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TWL8140A321NL 10/100/1000 Base-T Low-Profile RJ45 MagJack, Tab Up, Orange&Green/ Orange LED

The TeleWire Technology TWL8140A321NL is a 10/100/1000 Base-T EMI-finger shielded RJ45 MagJack with integrated magnetics. Manufactured in Taiwan.

Cross Reference

  • Bel Fuse L829-1U1T-43 — the TWL8140A321NL cross-references to this part.
  • Bel Fuse L829-1V1T-43 — a further published equivalent on the same footprint.
  • LINK-PP LPJK7039A210NL — same footprint, sourced outside mainland China.

Selection Notes

  • Low-profile body — reduced height where board-to-lid clearance is the constraint.
  • 10/100/1000 Base-T — the rate the internal transformer is wound for.
  • Orange&Green/ Orange LEDs — driven from the host; link and activity mapping is yours.
  • Integrated magnetics — the transformer sits in the shell, freeing board area beside the PHY.

Typical application: slim gateways and rack sleds where enclosure height is the binding constraint.

Pricing for the TWL8140A321NL ranges from $0.50 to $3.00 USD depending on order quantity and configuration, with volume tiers available on request.

Validate the TWL8140A321NL 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 10P8C(RJ45)
Ports 1x1
Speed 10/100/1000 Base-T
Latch Type Up
LED Orange&Green/ Orange
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) 0.946/ 24.30
Product Width (Inches/mm) 0.700/ 17.80
Product Height (Inches/mm) 0.445/ 11.30
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 L829-1U1T-43?
The TWL8140A321NL from TeleWire Technology cross-references to the Bel Fuse L829-1U1T-43 and to LINK-PP LPJK7039A210NL. 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.
Which manufacturers' parts does the TWL8140A321NL replace?
The TWL8140A321NL cross-references to Bel Fuse L829-1U1T-43; Bel Fuse L829-1V1T-43, and to LINK-PP LPJK7039A210NL. TeleWire Technology publishes the full cross-reference so a sourcing engineer can qualify one Taiwan-built part against several incumbents at once.
How do I qualify the TWL8140A321NL as a second source?
Request a sample of the TWL8140A321NL and the mechanical drawing from TeleWire Technology, then check the footprint against the Bel Fuse L829-1U1T-43 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.