Approved Optics Approved DELTA LCP-1250B4QSRT User Manual
Approved Optics Routers

LCP-1250B4QSRT-A
1000Base-LX SFP Module 
1310nm, 10Km, SMF, LC RoHS6 
_______________________________________________________
Approved
Networks,
Inc. www.ApprovedOptics.com
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LCP-1250B4QSRT-A
1.25Gbps SFP Transceiver 
 
Features 
Operating data rate up to 1.25Gbps
1310nm FP LD Laser Transmitter
10Km with 50/125 µm SMF
Singer 3.3V Power supply and TTL Logic interface
Duplex LC Connector Interface
Hot
Pluggable
Operating Temperature: 0°C ~+ 70°C
Compliant with MSA SFP Specification
Digital diagnostic monitor interface compatible with SFF-8472
 
Product Description 
 
Approved Optics LCP-1250B4QSRT-A is a single-mode transceiver - a small form factor 
pluggable module for bi-directional serial optical data communications such as Gigabit 
Ethernet 1000BASE-LX and Fiber Channel 1x SM-LX-L FC-Pl. This module is designed 
for single-mode fiber and operates at a nominal wavelength of 1310nm. 
 
The transmitter section uses a multiple quantum well laser and is a class 1 laser 
compliant, according to International Safety Standard IEC-60825. The receiver section 
uses an integrated GaAs detector preamplifier (IDP) mounted in an optical header and a 
limiting post-amplifier IC. 
 
The LCP-1250B4QSRT-A is designed to be compliant with SFF-8272 SFP Multi-source 
Agreement (MSA). 
 
Regulatory Compliance
Feature
Standard
Performance
Electrostatic Discharge (ESD) 
to the Electrical Pins 
MIL-STD-883E Method
3015.7
Class 1(>500 V) Isolation 
with the case 
Electromagnetic Interference 
(EMI) 
FCC Part 15 Class B
Compatible with 
standards 
Laser Eye Safety
FDA 21CFR 1040.10 and
1040.11 EN60950, EN (IEC)
60825-1,2
Compatible with Class I 
laser product. Compatible 
with TμV standards 
Component Recognition
UL and CUL
UL file E317337
Green Products
RoHS
RoHS6
