SFP28 LWDM 25G Series – www.philisun.com https://www.philisun.com Optical transceivers support <strong>10G to 800G</strong> high-speed transmission Thu, 04 Dec 2025 09:29:30 +0000 en-US hourly 1 https://www.philisun.com/wp-content/uploads/2025/10/philisun斐立飒-logo彩色方形-1-100x100.png SFP28 LWDM 25G Series – www.philisun.com https://www.philisun.com 32 32 Generic Compatible 25G LWDM O-Band 40km SFP28 Duplex LC SMF Optical Transceiver Module https://www.philisun.com/products/25g-lwdmo-band-40km-lc-dx/ Wed, 19 Nov 2025 03:22:50 +0000 https://www.philisun.com/?post_type=product&p=3209 SFP28-25-LWD-40-LCD

Generic Compatible 25G LWDM O-Band 40km SFP28 Duplex LC SMF Optical Transceiver Module最先出现在www.philisun.com。

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SPECIFICATIONS
Product ModelSFP28-25-LWO-40-LCDManufacturer BrandPHILISUN
Package TypeSFP28Optical ConnectorDuplex LC
Max Data Rate25.78GChannel Data Rate-
Effective Transmission Distance40km
Wavelength1286.66nm
1291.10nm
1295.56nm
1300.05nm
1304.58nm
1309.14nm		Operating Voltage3.3V
Fiber TypeSMFCore Size9/125µm
Transmitter TypeEML LWDMReceiver TypeAPD
TX Power-2~6dBmReceiver Sensitivity<-19dBm
Digital Optical Monitoring(DOM)YESReceiver Overload-
Power Consumption1.5WProtocolsSFF-8431, SFF-8472, IEEE 802.3CC
Operating Temperature(Commercial)0℃~+70℃Storage Temperature(Commercial)-40℃~+85℃

 

PRODUCT PRESENTATION
The PHILISUN SFP28 25G LWDM 40km LC DX transceiver is a compact and high-performance optical module designed for 25GBASE-ER Ethernet applications. It converts 25Gbps serial CML electrical signals into serial optical data and ensures compliance with the 25GBASE-ER standard.Equipped with an EML transmitter and an APD receiver, this transceiver delivers exceptional performance for single-mode fiber (SMF) links up to 40km. It adheres to SFF-8431, SFF-8432, and IEEE 802.3CC standards, offering reliable and consistent functionality.Digital diagnostic monitoring is accessible via a 2-wire serial interface, as defined by the SFF-8472 specification. The fully compliant SFP28 form factor supports hot pluggability, simplifies optical port upgrades, and minimizes EMI emissions, making it an ideal solution for high-speed network environments.

 

TRANSCEIVER SERIES PRODUCTS

 

PRODUCTION & TESTING EQUIPMENT

 

PERFORMANCE PARAMETER
Absolute Maximum Ratings
Parameter Symbol Min. Typ. Max. Unit Ref.
Storage temperature TS -40 – +85 ℃ –
Case operating temperature TA 0 – 70 ℃ –
Maximum supply voltage VCC 0 – 3.6 V –
Relative humidity RH 5 – 95 % –

 

Electrical Characteristics
Parameter Symbol Min. Typ. Max. Unit Ref.
Supply voltage VCC 3.135 – 3.465 V –
Supply current Icc – – 606 mA –
Power consumption P – – 2 W –
Data rate R – 25.78 – Gb/s –
Transmitter section:
Input differential impedance Rin – 100 – Ω 1
Tx input single ended DC voltage tolerance (ref VeeT) V -0.3 – 4 V –
Differential input voltage swing Vin,pp 180 – 700 mV 2
Transmit disable voltage VD 2 – VCC V –
Transmit enable voltage VEN Vee – Vee+0.8 V –
Receiver section:
Single ended output voltage tolerance V -0.3 – 4 V –
Rx output diff voltage VO 150 – 900 mV –
Rx output rise and fall time Tr/Tf 9.5 – – ps 3
LOS fault VLOS fault 2 – VCCHOST V 4
LOS normal VLOS norm Vee – Vee+0.8 V 4
Notes:
1.Connected directly to TX data input pins. AC coupling from pins into laser driver IC.
2.Per SFF-8431 Rev 3.0
3.20%～80%
4.LOS is an open collector output. Should be pulled up with 4.7k – 10kΩ on the host board. Normal operation is logic 0; loss of signal is logic 1. Maximum pull-up voltage is 5.5V.

 

Optical Characteristics
Parameter Symbol Min. Typ. Max. Unit Ref.
Transmitter section:
Center Wavelength λt 1285.51 1286.66 1287.81 nm –
1289.95 1291.1 1292.25
1294.41 1295.56 1296.71
1298.9 1300.05 1301.2
1303.43 1304.58 1305.73
1307.99 1309.14 1310.29
spectral width △λ – – 1 nm –
Average optical power Pavg -2.0 – +6 dBm 1
Laser off power Poff – – -30 dBm –
Extinction ratio ER 4 – – dB –
Receiver section: – – – – – –
Center wavelength λr 1295 – 1325 nm –
Receiver sensitivity(OMA) Sen – – -19 dBm 2
Stressed sensitivity(OMA) Sen2 – – -16.5 dBm 2
Los sssert LOSA -30 – – dBm –
Los dessert LOSD – – -20 dBm –
Los hysteresis LOSH 0.5 – 5 dB –
Overload Sat -6 – – dBm 3
Receiver reflectance Rrx – – -12 dB –
Notes:
1.Average power figures are informative only, per IEEE802.3CC.
2.Conditions of stressed receiver tests per IEEE802.3CC. At 5E-5 BER.
3.Receiver overload specified in OMA and under the worst comprehensive stressed condition.

 

Timing Characteristics
Parameter Symbol Min. Typ. Max. Unit
TX_disable assert time t_off – – 100 us
TX_disable negate time t_on – – 2 ms
Time to initialize include reset of TX_FAULT t_int – – 300 ms
TX_FAULT from fault to assertion t_fault – – 1 ms
TX_disable time to start reset t_reset 10 – – us
Receiver loss of signal assert time TA,RX_LOS – – 100 us
Receiver loss of signal de assert time Td,RX_LOS – – 100 us
Rate-select chage time t_ratesel – – 10 us
Serial ID clock time t_serial-clock – – 100 kHz

 

Digital Diagnostic Monitoring Information
Data Address Parameter Accuracy Unit
96-97 Transceiver internal temperature ±3.0 ℃
98-99 VCC3 internal supply voltage ±3.0 %
100-101 Laser bias current ±10 %
102-103 Tx output power ±2.0 dBm
104-105 Rx input power ±2.0 dBm

 

PIN ASSIGNMENT

 

Pin Name Function Notes
1 VeeT Module transmitter ground 1
2 TX fault Module transmitter fault 2
3 TX disable Transmitter disable; Turns off transmitter laser output 3
4 SDL 2 wire serial interface data input/output (SDA) 4
5 SCL 2 wire serial interface clock input (SCL) 4
6 MOD_ABS Module absent, connect to VeeR or VeeT in the module 2
7 RS0 Rate select0, optionally control SFP+ receiver. When high, input data rate >4.5Gb/ s; when low, input data rate <=4.5Gb/s –
8 LOS Receiver Loss of signal indication –
9 RS1 Rate select0, optionally control SFP+ transmitter. When
high, input data rate >4.5Gb/s; when low, input data rate <=4.5Gb/s		 –
10 VeeR Module receiver ground 1
11 VeeR Module receiver ground 1
12 RD- Receiver inverted data out put –
13 RD+ Receiver non-inverted data out put –
14 VeeR Module receiver ground 1
15 VccR
Module receiver 3.3V supply
 –
16 VccT Module transmitter 3.3V supply –
17 VeeT
Module transmitter ground
 1
18 TD+ Transmitter non-inverted data out put –
19 TD-
Transmitter inverted data out put
 –
20 VeeT Module transmitter ground 1
Notes:
1.The module ground pins shall be isolated from the module case.
2.This pin is an open collector/drain output pin and shall be pulled up with 4.7K-10Kohms to Host_Vcc on the host board.
3.This pin shall be pulled up with 4.7K-10Kohms to VccT in the module.
4.This pin is an open collector/drain output pin and shall be pulled up with 4.7K-10Kohms to Host_Vcc on the host board.

 

PRODUCT CERTIFICATION

 

QUALITY ADVANTAGE

 

COMPATIBLE BRANDS
CONFIGURATION INFORMATION
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Generic Compatible 25G LWDM O-Band 40km SFP28 Duplex LC SMF Optical Transceiver Module最先出现在www.philisun.com。

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