Optical Transceiver Manufacturer

Module Families: Specs, MOQ and Lead Time

Every transceiver family this optical transceiver manufacturer supplies is listed below with MOQ and lead time. Lead time runs from deposit and includes 100% switch-platform testing before packing.

Family	Options	MOQ	Lead time
SFP 1G / 10G modules	LC, 850 / 1310 / 1550 nm, 300 m to 20 km, DDM	100 pcs	5-8 days
SFP+ 10G modules	SR 300 m / LR 10 km / ER 40 km, industrial option	100 pcs	5-8 days
SFP28 25G modules	SR 100 m / LR 10 km, for 25G Ethernet	100 pcs	7-10 days
QSFP+ 40G modules	SR4 / PSM / LR4, MPO or LC connectors	50 pcs	7-10 days
QSFP28 100G modules	SR4 100 m, MPO-12	50 pcs	8-12 days
FTTH SFP (SC/APC)	Rx-A2 class, OLT and ONU sides, SC/APC port	200 pcs	6-9 days
Industrial grade	-40 to +85 degrees C, SFP+ 10G 40 km class	100 pcs	7-10 days

MOQ and lead-time figures are standard production windows; Chinese New Year peaks can add 5-7 days. Fixed delivery dates are confirmed in writing on the proforma invoice.

What buyers order most from this shelf

• SFP+ 10G LR 10 km: the campus and metro link module - single-mode LC, DDM on board.
• SFP+ SR 300 m multimode: data center row-to-row patching over OM3/OM4.
• QSFP+ 40G PSM: four-lane 40G runs over parallel single-mode fiber.
• SC/APC FTTH SFP: OLT-side modules for FTTH cabinets and closures.
• Industrial SFP+ 40 km: street cabinets and uncooled plants at -40 to +85 degrees C.

These five cover most purchase orders. Coding, wavelength and reach are set per order - the working catalog of this optical transceiver manufacturer - the grid above lists the current families, and custom coding runs to your switch list.

Form Factor Decoder: SFP, SFP+, SFP28, QSFP+ and QSFP28

The naming reads like alphabet soup until someone lines it up. The decoder:

Form factor	Speed class	Ports per rack unit	Typical homes
SFP	1G (up to 2.5G)	24-48	FTTH OLTs, access switches
SFP+	10G	24-48	Standard 10G rows
SFP28	25G	24-48	Server-facing 25G rows
QSFP+	40G (4x10G lanes)	6-12	Spine uplinks, 40G runs
QSFP28	100G (4x25G lanes)	6-12	Spine and leaf uplinks

The S in every name stands for small form factor - each generation shrinks the bits. Breakout cables (QSFP+ to 4x SFP+) run between the generations, and we build the cord side of those breakouts on the same shelf.

Compatibility: The Question Every Buyer Asks First

A transceiver either initializes on your switch or it does not - so coding decides everything. Three facts about how this optical transceiver manufacturer handles it:

• Coding to order: state the switch brand and model, and the module EEPROM codes to that platform - recognized on first plug, no vendor-lock messages.
• Platform testing: modules initialize and pass traffic on real switches before packing, and not just on lab benches.
• Mixed fleets: one order codes modules across different switch brands - common for networks that grew by acquisition.

Compatibility problems disappear when coding and testing happen at the factory - the working promise of this optical transceiver manufacturer. That is the practical difference between an optical transceiver manufacturer and a trader reselling sealed bags.

Type Selection Guide: Reach, Fiber and Wavelength

Module naming looks dense until someone decodes it. The selection table covers the common builds:

Type	Fiber	Wavelength	Reach
SFP SR / SFP+ SR	OM3 / OM4 multimode	850 nm	300 m class
SFP+ LR	G.652D single-mode	1310 nm	10 km
SFP+ ER	G.652D single-mode	1550 nm	40 km
SFP28 SR / LR	OM4 / single-mode	850 / 1310 nm	100 m / 10 km
QSFP+ PSM	Parallel single-mode, MPO	1310 nm	2 km class
QSFP28 SR4	OM4 multimode, MPO-12	850 nm	100 m

Short runs with strong transmitters pair with attenuators; runs through our own cable and land on our patch cords - the whole link tests as one chain. Send the distances and switch models, and the quote states the type per link.

Quality Numbers: What We Test and What You Read

Modules from this optical transceiver manufacturer are measured components. The bench runs five checks on every piece:

• Link initialization on the coded switch platform - the port recognizes the module and trains.
• Eye-pattern and bit-error test at full rate - the transmit signal quality reads clean at the margin.
• DDM verification: temperature, voltage, TX and RX power read against reference windows.
• Temperature screening: sampled units run the operating band - commercial 0 to +70 degrees C, industrial -40 to +85 degrees C.
• Serial traceability: every module carries a serial that maps to its test record.

Spec numbers (draft - per-type datasheets carry the binding windows): TX power windows per IEEE module class, RX sensitivity to the class standard, and power consumption within the MSA profile. The datasheet set joins every quote.

DDM: The Health Report Inside Every Module

Digital diagnostics monitoring turns a transceiver into a sensor. Four values report live from every DDM-capable module:

• Temperature: the module runs hot before the link fails - DDM flags it early.
• Supply voltage: a drifting supply shows up here before ports reset.
• TX power: the laser aging shows as TX drift - the leading warranty indicator.
• RX power: fading fiber or dirty connectors show as RX drop, port by port.

Network teams script alerts on those four values. Because our modules report DDM accurately against reference windows, the alerts mean something - a monitoring system is only as honest as the modules it reads.

Handling: Transceivers Are ESD Devices in a Dusty World

Most DOA modules died on a desk, not on a line. The handling rules that keep modules alive from bag to port:

• Stay grounded: modules ship in ESD bags for a reason - open them at a grounded bench, not on carpet.
• Caps stay on: the ferrule end collects dust in seconds; caps come off only when the module enters the port or meets a cleaned patch cord.
• Clean before mating: one-click cleaners on both the module ferrule and the cord end - the cheapest fix for the most common fault.
• Label on receipt: stick the switch-and-port label on the bag at receiving, so coding never gets guessed at install time.

These four habits appear on the instruction card in every box, and they are the difference between a 0.1% field failure rate and a support ticket queue.

OEM, ODM and Private-Label Capability

As an OEM optical transceiver manufacturer, we build to your coding, label and packaging spec:

• OEM: private-label labels and bags, coding to your platform list - free label proofing above 500 pieces.
• ODM: custom reach and coding combinations for project-specific links, samples in 10-15 days after spec approval (draft).
• OBM / JDM: exclusive part codes and stocking programs for distributors under NDA.

OEM projects we shipped (draft references - replace with your approved cases)

• Regional ISP, 2024: 5,000 SFP+ LR modules coded across two switch brands for a metro ring, phased quarterly.
• Data center integrator, 2023: 1,200 QSFP+ 40G PSM pairs with patch cords from our own line, tested as chained links.
• FTTH operator, 2025: 8,000 SC/APC OLT-side SFP units for cabinet rollouts, DDM verified per unit.

Modules pair with everything that feeds them: patch cords, adapters, attenuators for hot Rx ports, and the cable that carries the link.

FTTH Note: The SC/APC Module at the OLT Shelf

FTTH networks terminate OLT ports on SC/APC connectors, and standard LC modules do not fit that plant. The Rx-A2 class FTTH SFP on this shelf carries the SC/APC port directly:

• APC polish: green port, 8-degree finish, matches the APC adapters and splitters downstream.
• DDM on board: the OLT reads RX power per subscriber tree - the fastest way to find a dirty drop.
• Fit: standard SFP footprint, so existing OLT shelves take the module without adapters.

FTTH crews order these with the splitters and APC adapters for the same cabinets, so the whole shelf builds from one purchase order.

Wholesale Program for Distributors and Integrators

Transceiver demand arrives in refresh cycles, and this optical transceiver manufacturer prices for that rhythm: The wholesale program at this optical transceiver manufacturer matches that rhythm:

• Tier pricing: steps at 500, 2,000 and 5,000 pieces per cycle; mixed types count toward the tier.
• Coding library: your switch list stays on file - repeat orders code automatically.
• Project phasing: frame agreements phase shipments against deployment calendars.
• Label program: private-label bags and box codes under your brand.
• Tender pack: CE reports, RoHS statements and test templates refreshed per cycle.

Distributors start with a coded sample pack for their top switch models and scale to frame terms once the returns data proves itself.

Certifications and Compliance

The factory runs under ISO 9001:2015, with CE reports covering the module families sold into the EU, and the company holds a utility patent on a fiber optic quick connector - the in-house R&D behind our passive lines. Documents are public on the certificate page.

Certificate	Relevance to transceivers
ISO 9001:2015	Quality management for assembly, coding and testing
OHSAS 18001:2007	Occupational health and safety management
CE reports	Module families shipped into the EU
RoHS statements	Compliant materials on request, per batch

Module designs follow the industry MSA profiles for each form factor - SFF-8472 for SFP DDM, and the QSFP+ / QSFP28 MSA specifications for pinout and power class.

Factory Strength: One Bench Codes, Tests and Ships

Transceivers assemble and test in the Yiwu compound beside our cable, cord and passive lines - 25 years under founder LING LI, since December 2000:

• Coding and test: real switch platforms from the major brands run initialization and traffic on every module.
• Quality: Grace Xu, Quality Director, releases batches against DDM and bit-error records.
• R&D: Zhou Liubo, Director of R&D and quick-connector patent holder, owns the coding library and custom reach builds.
• Export: Peter Lin, Head of Export Sales - one contact from RFQ to B/L. Video audits run any business day - see the factory gallery.

Company quick facts
Founded	December 2000, Yiwu City, Zhejiang, China
Founder	LING LI, Founder & General Manager
Focus	Transceivers, cable, patch cords, splitters, connectors, adapters, ODFs and boxes
Export markets	40+ countries across Asia, the Middle East, Africa, Europe and the Americas
Response time	Quotes within 24 hours on business days

Industrial Grade: When the Cabinet Has No Air Conditioning

Street cabinets, tower bases and factory floors see -40 to +85 degrees C. Commercial modules drift out of spec in that band; industrial-grade modules hold it:

• Rated band: -40 to +85 degrees C, verified across the band on sampled units (draft - datasheets state the protocol).
• Build difference: temperature-hardened lasers and drivers, not just a label.
• Common homes: street cabinets, tower-base FTTA runs, factory floors, uncooled remote huts.

Industrial builds cost a step more and save the truck roll - the trade a fiber optic transceiver manufacturer should be honest about on the quote.

Why Buyers Pick HENGXANG Over Other Suppliers

Transceiver quotes look alike until a module fails to initialize. Compare on the points that decide it:

Factor	HENGXANG	Typical trading company
Coding	Coded to order per switch model, list on file	Generic coding, port errors
Testing	100% on real platforms, serial per module	Bench samples only
MOQ	50-200 pcs by family; trial packs welcome	Large minimums per type
Quote speed	Within 24 hours on business days	Days
Chain	Modules + cords + cable tested as one link	Single category

And one habit worth naming: if a cheaper module type meets your distance, we quote the cheaper type. Over-specifying reach wastes your budget and stresses the receiver - and that argument loses re-orders.

Mixed Fleets: One Order, Five Switch Brands

Networks that grew by acquisition run mixed switch fleets, and mixed fleets need mixed coding. The workflow is simple: send the switch list per site, and the quote codes each module line to its platform - Cisco-coded for the core, HPE-coded for the edge, all in one shipment with labels that state the platform per bag. Acceptance teams test one module per coding group instead of one per piece.

How We Work With You: From Switch List to Delivered Trays

Six steps, all written down:

• Step 1 - RFQ: send the module types, switch models and quantities. WhatsApp +86 134 3434 9304 or the contact form.
• Step 2 - Quote: prices, coding confirmation, MOQ, lead time and packing plan within 24 hours on business days.
• Step 3 - Samples: coded samples ship in 3-5 days for your bench and your switches.
• Step 4 - Production: coding, assembly and test with photos while your order runs.
• Step 5 - Inspection: 100% platform test plus third-party inspection on request.
• Step 6 - Shipment: EXW, FOB Ningbo/Shanghai or CIF; documents within 3 working days of sailing.

Worked Example: A 1,500-Module Data Center Refresh

Illustrative figures - your quote states yours. A data center refreshes top-of-rack optics: 1,200 SFP+ SR 300 m, 200 QSFP+ 40G SR4, 100 SFP+ LR for the uplinks:

Step	Detail
Day 0	Switch list received; coding confirmed and quote issued next morning
Day 1-3	Coded samples airfreighted - tested on the buyer's own switches
Day 4-9	Production: assembly, coding, 100% platform test on all 1,500 modules
Day 9-10	Serial-labeled bags, test file exported to the buyer's template
Day 11	Carton pack: 30 cartons, ~4 cbm; trucked to Ningbo, FOB
Day 12	B/L and test file issued 2 days after sailing

Twelve days from switch list to sealed cartons - and every module initializes on arrival, because the coding and the test happened where the modules were built. That is what ordering from an optical transceiver manufacturer with its own bench delivers.

Plan the Upgrade Path: 1G Today, 100G Tomorrow

Transceivers are the fastest-obsoleted part of the plant - and the easiest to plan around. Three habits keep refresh cycles cheap:

• Buy the port density once: switches outlive several module generations, so size the shelf for the 25G or 100G end state and start with the modules the traffic needs today.
• Keep the fiber neutral: OM4 and OS2 cable runs support every future module class - multimode OM3 limits the 25G+ roadmap.
• Standardize the coding list: one coding file per switch model makes every future re-order a two-line email.

The upgrade conversation costs nothing and starts at the quote - send today's traffic and the three-year plan, and the quote prices both phases.

Light the Ports, Then Run the Whole Shelf

Modules light the ports, and this optical transceiver manufacturer ships everything the light touches: the patch cords at the panel, the adapters in the frame, the cable on the route, the splitters at the split points, the termination boxes and splice closures in the field, and the ODFs that anchor the exchange. Hot receivers trim with attenuators; FTTH drops terminate with the SC/APC modules on this shelf. One purchase order, one freight plan, one warranty conversation.

Worked Example: Stocking an FTTH OLT Cabinet

Illustrative figures - your quote states yours. An operator stocks a new OLT cabinet for 512 subscribers:

Step	Detail
Day 0	OLT model and port count received; SC/APC module coding confirmed
Day 1-3	Coded samples airfreighted; bench-tested on the same OLT model
Day 4-8	Production: 512 modules assembled, coded and 100% tested
Day 9	Pack: 26 cartons of 20, each bag labeled with port group
Day 10	Trucked to Ningbo, FOB; DDM and coding file issued 2 days after sailing

Ten days from model list to a stocked cabinet - and every port reads DDM the day the subscribers connect.

Beyond Gray Modules: CWDM, DWDM and Direct-Attach Options

Standard "gray" modules cover one wavelength per link. When fiber strands run short or racks sit close, three alternatives save the build:

• CWDM colored modules: eight wavelengths (1470-1610 nm) share one fiber pair through passive CWDM muxes - 8 links on 2 fibers. Pairs with our splitters and ODF shelf.
• DWDM colored modules: denser 100 GHz spacing for longer hauls and carrier networks.
• DAC twinax and AOC cables: for runs under 7 m, a factory-attached cable beats two modules and a cord - lower power, lower cost, no coding. We build the cord side and code the ends to order.

Mixed racks use all three: DAC inside the row, gray modules between rows, colored modules between buildings. Send the link map and the quote prices every link by its cheapest working type.

Regional Notes: Coding and Standards by Market

Twenty-five years of export taught this optical transceiver manufacturer how coding and standards vary by market:

• Europe: multi-vendor coding and RoHS paperwork lead the spec list; data center orders run SR/LR mixes.
• Middle East: APC-heavy FTTH plants order OLT-side SC/APC modules; industrial grades serve outdoor cabinets.
• Asia-Pacific: GPON SFP volumes and 25G server-facing rows lead; coding lists run long across mixed fleets.
• Americas: 10G and 25G refreshes dominate; domestic-compatible coding requirements arrive in the RFQ.

Tell us the country and the switch fleet. We answer with the coding set that already ships there.

Quick Answers: Colors, Mixing and the Shelf

Two questions arrive weekly and get answered here before the FAQ. First, colors: SR multimode modules carry black or beige bails, LR single-mode UPC carries blue, ER carries yellow tint, and APC single-mode is green - color is the quick check, and the bag label is the record. Second, mixing: coded modules from different sources initialize identically on a coded port, and mixed fleets are the normal state of any network that grew - keep DDM monitoring on, because it reads every port the same way and flags any module, from any source, that drifts. Both answers ship printed in the box with every order - a fiber optic transceiver manufacturer that answers pre-sale questions in writing answers warranty questions the same way.

Frequently Asked Questions