QUOTE SCOPE · SAME BASIS
A wholesale pam4 optical transceiver price can be lined up across factories when every reply uses the same lane rate, FEC assumption, coding, quantity, currency, and destination. LinkScope Sourcing 01 collects those fields. It does not publish a street price and it does not rank plants.
PAM4 quotations fail comparison when one factory prices a 100 Gbit/s single-lambda FR module and another prices a 4 x 25 Gbit/s NRZ module under a similar marketing name. Write the electrical interface and the optical interface as two lines. Say whether the host ASIC is expected to run KP4 FEC or another mode, and whether that mode is included in the sensitivity number.
Treat each cell as a question the proposed supplier must close. A missing cell is a deviation, not a silent inclusion. The inquiry cards name the family. This matrix names the commercial and support scope around it.
| Topic | What to ask | Why the quotes diverge |
|---|---|---|
| Coding and EEPROM | Coded for a named host and software release, or generic identity. | A coding fee and a rejection risk sit outside the bare optical price. |
| Temperature grade | Commercial 0 °C to 70 °C case, extended, or industrial -40 °C to 85 °C. | The same wavelength can be a different build once the case range changes. |
| FEC and test pattern | Which FEC the receiver sensitivity assumes, and whether the pattern is PRBS or a framed signal. | PAM4 level spacing is tight. A number without the pattern cannot be compared. |
| Accessories | Pull tab, heatsink, or bail latch included or excluded. | A cage that needs a taller heatsink is a different delivered set. |
| Warranty and returns | Months, dead-on-arrival window, and who pays return freight. | A shorter warranty with a lower unit figure is not the same purchase. |
| Software and licenses | Any host license, port license, or optics entitlement the platform vendor requires. | The module invoice can look complete while the port stays dark for a license reason. |
Transmit power and receiver sensitivity should be copied with units, usually dBm, at the wavelength the link uses. If the supplier gives a range, keep minimum transmit power for the budget and do not substitute the typical value. Dispersion penalty, if the datasheet lists one, belongs beside the reach class for single-mode PAM4 paths. Multimode paths should instead show modal bandwidth and the OM grade.
Quote OEM-coded modules and compatible modules on separate rows. The coded row may track a platform vendor support policy. The compatible row may come from a wider set of plants when the host name and software release are written into the test note. A buyer may request both. The desk will not merge them into a single unit figure, because a refused EEPROM code is a different outcome from an optical-power miss.
State pieces, not a vague lot. If the project needs 40 modules in week one and 120 modules later, ask whether the unit figure changes with the split. A sample of two pieces is a different commercial line from the production lot. Ask whether the sample is the same EEPROM code and the same temperature grade.
Name the US destination city or port and the Incoterm. A factory-gate figure and a delivered figure cannot be subtracted into a saving. Duties, brokerage, and the fiber jumpers are separate lines until a supplier includes them in writing. This page does not estimate those charges.
Ask whether the stated weeks start at order acceptance, at drawing approval, or at receipt of a host part number for coding. A date without that basis cannot be placed on a project schedule. Condition of goods, new or refurbished, must be explicit because remaining support and cosmetic criteria differ.
Define document review, a label check against the named model, and an incoming optical check if the buyer has the meter and the reference jumpers. Record who accepts a deviation. An unverified sentence on a quotation does not become a claim on this site.
The preference is a buying stance. It is not a score of any factory. The contact page uses the same fields if you want the longer intake notes beside the form.
QUALIFIED BUSINESS BUYERS
Compare quotations from up to 3 factories after the optical configuration is written down.
Eligibility applies to qualified business buyers and is confirmed after we review your product, quantity, destination, and sourcing requirements.