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RJ45 Gigabit SFP Module – 1000BASE-T Copper SFP Transceiver with 1.25Gbps and Low EMI

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RJ45 Gigabit SFP Module – 1000BASE-T Copper SFP Transceiver with 1.25Gbps and Low EMI

Material : Plastic

Port : Fiber hub Box from NINGBO Port

Model Name : Fiber Optics Connector

Skype : michella_fang,chaizhiquan91,Thomas65339

Model Number : TK-G3-RJ45

Free Sample : Yes

Feature : waterproof

D/c : Newest,NEW,2013+,1234,RF Transceiver and Receiver Module

Operating temperature : Standard,-40~85,-10°C ~ 70°C

Certification : CE,ROHS,REACH,ISO9001,ISO14001

Condition : New,100% Original new

Repeatability : ≤0.2dB

Connector Module : 3.0mm

Type : Voltage Regulator,Logic ICs,transceiver module,Single mode single fiber bi-directional transmission,Drive IC

Price : US$2.21 ~ US$59.25/PC

Wavelength : 1310nm/1550nm,850nm,1490nm/1310nm,1310NM 1270NM

Place of Origin : Guangdong, SHENZHEN

Atorage Temperatuture : -40°C~85℃

Connector Cable Od : 0.9mm ,2.0mm, 3.0mm

Source : FP,VCSEL / PIN

Dissipation power : 0.1w,W

Fiber Diameter : 125μm

Power supply : 3.3V

MOQ : 1 Pices

Model No : fiber optic Connector

Connector Outer Diameter : 3.0mm, 2.0mm, 0.9mm

Wiring Devices : ODF

Color : customization

Operating Temperature : -40°C to +85°C

Package : SMD,QFN-20,NRF24L01,poly bag,Fiber Optic

Distance : 20KM,300m,3KM

Application : Telecommunication,Alarm,Computer,Video monitor system,1X fiber channel

Endurance : 500 cycles

Supply voltage : 1.9-3.6V,0~110,2.7 V ~ 5.5 V,Common

Payment Terms : L/C,D/A,D/P,T/T,Western Union,

Delivery Time : 3-7working days

Polishing Type : UPC, APC

Salt Spray : 500h

Shipping by : DHL\UPS\Fedex\EMS\HK Post

Interchangeability : ≤0.2dB

Connector Return Loss : SMF: UPC≥50, APC≥60 ;MMF: ≥30

Production Capacity : 700000pieces/Month

Installation Time : Within 60s ( No fiber cut )

Data transfer rate : 155M,10G

Voltage : 1.9~3.6V,Standard

Transmission Medium : Single-Mode/ Mulit-Mode

Brand Name : TAKFLY

Packaging Details : spone + box + carton

Product name : EPON OLT PX20+,433mhz uart Transceiver Module,1.25g bidi sfp optical module,SFP+ Transceiver,1.25G sfp module 1310/1550nm 10km sfp transceiver module

Warranty : 365days,3 Years,1 years

Housing Color : Blue, Green, Beige

Filler : Optical Silicone Grease

Fiber Mode : 62.5/125µm OM1, 50/125µm OM2

Weight : 2kg

Assembly Type : Mechanical

Durability : ≥1000 times

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RJ45 Gigabit SFP Module – 1000BASE-T, 1.25Gbps, 100m over Cat 6, Low EMI
Product Overview

The TK-G1-RJ45 is a hot-pluggable copper SFP transceiver designed for Gigabit Ethernet applications. It conforms to IEEE 802.3-2002 and IEEE 802.3ab (1000BASE-T) standards. The module operates at 1000Mbps data rate over Category 5 unshielded twisted-pair cable with a maximum reach of 100 meters.

Signal transmission uses 5-level Pulse Amplitude Modulation (PAM) on all four wire pairs (250 Mbps per pair) for full-duplex links. The module includes serial ID functionality per SFP MSA, accessible via a 2-wire serial bus at address A0h. The physical layer IC can also be accessed at address ACh.

Key Features
  • Data rate up to 1.25Gb/s bidirectional
  • SFP MSA compliant, hot-pluggable
  • TX Disable and RX LOS (or no LOS)
  • Full metal housing for low electromagnetic interference
  • Typical power consumption: 1.05 W
  • Compact RJ-45 connector
  • 2-wire serial bus access to physical IC
  • Supports 1000BASE-T on host systems with SERDES interface
  • Operating case temperature: 0℃ to +70℃ (commercial) or -20℃ to +85℃ (extended)
Applications
  • 1.25 Gigabit Ethernet transmission over Cat 5 cable
Pin Assignment and Functions
Pin Name Function Seq. Notes
1VeeTTransmitter Ground1VeeT and VeeR are internally connected.
2TX_FAULTTransmitter Fault3Not implemented; tied to VeeT.
3TX_DISABLETransmitter Disable3See TX Disable description.
4MOD DEF (2)Module Definition 23Data line for serial ID bus.
5MOD DEF (1)Module Definition 13Clock line for serial ID bus.
6MOD DEF (0)Module Definition 03Tied to Vee in SFP.
7RATE SELECTNot used3Not implemented; 33k pulldown to Vee.
8LOSLoss of Signal3See LOS option.
9VeeRReceiver Ground1Connected to VeeT inside SFP.
10VeeRReceiver Ground1Same as above.
11VeeRReceiver Ground1Same as above.
12RD-Inverted RX Data3AC coupled, 100Ω differential.
13RD+Non-inverted RX Data3AC coupled, 100Ω differential.
14VeeRReceiver Ground1Connected to VeeT.
15VccRReceiver Power2Connected to VccT.
16VccTTransmitter Power2Connected to VccR.
17VeeTTransmitter Ground1Common ground.
18TD+Non-inverted TX Data3AC coupled, 100Ω differential input.
19TD-Inverted TX Data3AC coupled, 100Ω differential input.
20VeeTTransmitter Ground1Common ground.
Notes on Pin Functions
  • Plug Seq.: Pin engagement order during hot-plugging.
  • TX_FAULT: Permanently low (not supported).
  • TX_DISABLE: Internal 4.7kΩ pull-up. Low (0-0.8V) → transceiver on; High (2.0-3.465V) or open → reset.
  • Mod-Def 0/1/2: Host pulls up with 4.7k-10kΩ to Vcc. Mod-Def 0 = module present (grounded). Mod-Def 1 = clock, Mod-Def 2 = data.
  • RX_LOS: LVTTL output. Can be disabled (order option). If unused, tied to ground via 100Ω.
  • RD ± / TD±: AC coupled 100Ω differential lines. Host SERDES must terminate RD± with 100Ω; TD± have internal 100Ω termination.
Power Supply (+3.3V)
Parameter Symbol Min Typ Max Unit Condition
Supply CurrentIs320375mA1.2W max over full Vcc & temp
Input VoltageVcc3.133.33.47VReferenced to GND
Maximum VoltageVmax4VNon-destructive
Low-Speed Interface (LVTTL)
Parameter Symbol Min Max Unit Condition
SFP Output LOWVOL00.5V4.7k-10k pull-up to host_Vcc
SFP Output HIGHVOHhost_Vcc-0.5host_Vcc+0.3VSame pull-up
SFP Input LOWVIL00.8V4.7k-10k pull-up to Vcc
SFP Input HIGHVIH2Vcc+0.3VSame pull-up
High-Speed Electrical Characteristics (SFP Side)
Parameter Symbol Min Typ Max Unit Notes
Line FrequencyfL125MHz5-level encoding, IEEE 802.3
TX Output Impedance (diff)Zout,TX100Ω1-125 MHz
RX Input Impedance (diff)Zin,RX100Ω1-125 MHz
High-Speed Interface (Host Side)
Parameter Symbol Min Typ Max Unit Notes
Single-ended TX input swingVinswing2501200mV
Single-ended RX output swingVoutswing350800mV
Rise/Fall time (20-80%)Tr,Tf175ps
TX input impedance (SE)Zin50Ω
RX output impedance (SE)Zout50Ω
Temperature Ranges
Parameter Min Typical Max Unit
Operating (Commercial)070℃
Operating (Extended)-2085℃
Storage-4085℃
Mechanical Outline

The module's host-side mechanical dimensions follow SFP MSA specifications. The front portion (protruding outside the host panel) is enlarged to accommodate the RJ-45 jack.

Reference Documents
  • SFP Transceiver MSA, September 2000
  • IEEE 802.3-2002 (including 802.3ab)
  • Atmel AT24C01A/02/04/08/16 2-Wire Serial EEPROM datasheet
Regulatory Compliance
Feature Standard Result
ESDIEC/EN 61000-4-2Compliant
EMIFCC Part 15 Class B, EN 55022 Class BCompliant
Laser SafetyFDA 21CFR 1040.10, 1040.11; IEC/EN 60825-1,2Class 1
Product SafetyIEC/EN 60950, ULCompliant
RoHS2002/95/ECCompliant
EMCEN61000-3Compliant
Frequently Asked Questions
Q: Are you a manufacturer?
A: Yes, we are a manufacturer, FTTH solution and data center total solution provider in Shenzhen, China, established in 2000.
Q: What's your MOQ?
A: MOQ can be 1 pcs, but the price is not competitive. More quantity, the price will be more competitive. We can quote price with freight and lead time for you, after you let us know detailed requirements with quantity. We have competitive shipping forwarders. For more solutions, you can feel free to contact us.
Q: How is your quality?
A: Our production is according to IEC, Europe standard. CE, ISO, RoHS, CPR, and ANATEL certified. All the products are 100% test before delivery.
Q: What's your lead time?
A: It depends on the quantity and products. For fiber optic patch cord, the lead time can be 2-3 working days within 5000 pcs. We keep the regular products in stock. Also, we can deal with urgent orders.
Q: What's your warranty?
A: Depends on different product, we have 1 years warranty for patch cord since delivery, but only responsible for non-artificial damage. For artificial damage, we can repair it for you for free, freight will be paid by your side.
Q: What's your packing?
A: International export standard package. If you need to print your logo on the packing, please let us know before we quote.
Q: Can you offer OEM/ODM?
A: Yes, we can. All products accept OEM/ODM. We can sign the Confidentiality Agreement.
Q: Can I have a sample?
A: It depends on which products. Free sample provide under 10 USD. Freight will be paid by buyer before delivery.
Q: How can I order?
A: 1. Send mail or inquiries with product name, specification, and quantity to us. Provide your receive address if you need FOB, CIF, CFR price.
2. We will offer our quotation with lead time.
3. After the quotation confirmed, we will send a PI with our bank account.
4. Production will be arranged after the payment received.
5. Confirm the consignee with you before we deliver it.
6. The tracking number will be provided after the delivery.
Q: What is your payment term?
A: T/T, Western Union, Paypal, at once. For big amounts, can be 50% deposit in advance, 50% balance paid before delivery. With the same quality standard, if you could get better price from the market, TAKFLY also could support you same price. 3 years work experience in optical fiber industry, It's honored to be your professional product assistant.

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