• TK-B3424-3LCD20 1.25Gbps SFP Bi-Directional Transceiver, 20KM Reach Tx1310nm/Rx1490nm
TK-B3424-3LCD20 1.25Gbps SFP Bi-Directional Transceiver, 20KM Reach Tx1310nm/Rx1490nm

TK-B3424-3LCD20 1.25Gbps SFP Bi-Directional Transceiver, 20KM Reach Tx1310nm/Rx1490nm

Product Details:

Place of Origin: China, Shenzhen
Brand Name: DF/OEM/Nuetral
Certification: CE/ROHS/REACH/ISO9001/ISO14001
Model Number: DF-PS-G 10/100/1000M PoE Splitter Cable (13W)

Payment & Shipping Terms:

Minimum Order Quantity: negotiable
Price: negotiable denpend on QTY
Packaging Details: Blister box+Carton
Delivery Time: 5-9 working days depends on QTY
Payment Terms: Western Union, T/T, MoneyGram/Paypal
Supply Ability: 1000PCS/Day
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Detail Information

Product Name: TK-B3424-3LCD20 1.25Gbps SFP Bi-Directional Transceiver, 20KM Reach Tx1310nm/Rx1490nm Supply Voltage: 3.15-3.6V
Supply Current: 185-280 MA Input Differential Impedance: 100 Ω
Single Ended Data Input Swing: 250-1200 MV Transmit Disable Assert Time: 10 Us
ISingle Ended Data Output Swing: 250-800 MV Power Supply Rejection: 100 MVpp
Working Temperature: 0 °C To +70 °C Storage Temperature: -40 °C To +85 °C (Industrial)
Warranty: 1 Years, Lifetime Maintenance Fiber Brand: Corning, YOFC, OFS, Draka
Highlight:

1.25Gbps SFP transceiver 20KM reach

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Bi-Directional SFP transceiver Tx1310nm/Rx1490nm

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Optical transceiver module with 20KM range

Product Description

TK-B3424-3LCD20 1.25Gbps SFP Bi-Directional Transceiver
TK-B3424-3LCD20
Product Overview

The SFP-BIDI transceivers are high-performance, cost-effective modules supporting dual data-rate of 1.25Gbps/1.0625Gbps with 20KM transmission distance over single-mode fiber.

The transceiver consists of three sections: a FP laser transmitter, a PIN photodiode integrated with a trans-impedance preamplifier (TIA), and MCU control unit. All modules satisfy class I laser safety requirements.

The transceivers are compatible with SFP Multi-Source Agreement (MSA) and SFF-8472 specifications.

Applications
  • Gigabit Ethernet
  • Fiber Channel
  • Switch to Switch interface
  • Switched backplane applications
  • Router/Server interface
  • Other optical transmission systems
Key Features
  • Dual data-rate of 1.25Gbps/1.063Gbps operation
  • 1310nm FP laser and PIN photodetector for 20KM transmission
  • Compliant with SFP MSA and SFF-8472 with simplex LC receptacle
  • Digital Diagnostic Monitoring with Internal or External Calibration
  • Compatible with SONET OC-24-LR-1
  • RoHS compliant
  • +3.3V single power supply
  • Operating case temperature range: 0°C to +70°C (Commercial) / -40°C to +85°C (Industrial)
Technical Specifications
TK-B3424-3LCD20 1.25Gbps SFP Bi-Directional Transceiver, 20KM Reach Tx1310nm/Rx1490nm 0

Notes:

1. Connected directly to TX data input pins. AC coupled thereafter.

2. Or open circuit.

3. Into 100 ohms differential termination

4. 20 - 80%

5. Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.

6. Receiver sensitivity is compliant with power supply sinusoidal modulation of 20 Hz to 1.5 MHz up to specified value applied through the recommended power supply filtering network.

Product Images
TK-B3424-3LCD20 1.25Gbps SFP Bi-Directional Transceiver, 20KM Reach Tx1310nm/Rx1490nm 1 TK-B3424-3LCD20 1.25Gbps SFP Bi-Directional Transceiver, 20KM Reach Tx1310nm/Rx1490nm 2
Why Choose TAKFLY
  • 25+ years of manufacturing experience in fiber optic products
  • 450+ assembly workers with 3+ years of experience
  • 10+ R&D Engineers dedicated to innovation
  • 16 Germany-imported Injection Machines and production lines
  • 30+ testing machines including OTDR, 3D, VFL, IL&RL test instruments
  • Comprehensive testing equipment: tension strength testers, crush resistance testers, power meter testers, light checkers
  • OEM branding accepted
  • Global exhibition participation: OFC, ECOC, CommunicAsia, NETCOM, AFRICACOM, SVIAZ ICT, CommunicIndonesia, Global Source Electronic Exhibition
Quality Control
  • Raw material spot checking before production
  • Full inspection after every individual process
  • Comprehensive half-done production checks
  • Complete finished product inspection before packing
  • Pre-shipping spot checks
Delivery Information

Samples: 1-3 working days

Mass Production Orders: 3-7 working days

Packaging: Plastic bags, cartons, and pallets available per request

Frequently Asked Questions
Q1: How can I get your catalogue and price list?

Please provide your email or contact information through our website to receive our catalogue and price list.

Q2: Can I negotiate the prices?

Yes, we may consider discounts for multiple container loads of mixed goods.

Q3: How much will the shipping charges be?

Shipping charges depend on your shipment size and shipping method. We will provide charges upon request.

Q4: Can I visit you?

Certainly! Our factory is located in Shenzhen, China. Please contact us to schedule an appointment.

Q5: What if there is quality problem when we get the goods?

If you encounter quality issues upon unpacking, please take photos for our reference. Our QC department will investigate and provide the best solutions, along with implementing quality improvements for future production.

Q6: What is your terms of packing?

We typically pack goods in blister boxes and cartons, but can accommodate custom packaging requests from customers.

Q7: What is your terms of payment?

T/T 30% as deposit, and 70% balance before delivery. We provide photos of products and packaging before final payment.

Q8: What is your terms of delivery?

EXW, FOB, CFR, CIF, DDU

Q9: How about your delivery time?

Generally 5-7 working days after receiving advance payment. Specific delivery time depends on items and order quantity.

Q10: Can you produce according to the samples?

Yes, we can manufacture products based on your samples or technical drawings.

If you're interested in our products or have any questions, feel free to contact us at any time!
TK-B3424-3LCD20 1.25Gbps SFP Bi-Directional Transceiver, 20KM Reach Tx1310nm/Rx1490nm 3

Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

R
r*e
Belgium Nov 13.2025
Arrived very quickly! Packed well and no damaged, respond always on time!
Z
z*f
Poland Nov 9.2025
Fit well in our data center, service plus+
J
John
United Kingdom Nov 6.2025
Good quality and good service, working well, thank you!

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