Is the host window written?
A radio manual may allow a band around the nominal volts. The desk asks for that band and for the supply’s regulation. A 12 V unit is not treated as a small step away from 24 V.
METHOD DESK
LinkScope Sourcing 49 writes the supply line before a factory is asked
- Capture volts, amperes, and the box.
- Ask factories for the same rows.
- Leave unfit replies out of the column.
LinkScope Sourcing 49 is an independent sourcing partner for Telecom Infrastructure buyers. The desk coordinates factory quotations for switching supplies. It does not operate a rectifier plant, it does not keep modules in a cage, and it does not speak as an authorized channel.
The work starts when a buyer can name the output. A 12 V brick at 10 A is 120 W. A 24 V brick at 10 A is 240 W. A -48 V plant module is a third family. Those three lines are not ranked against each other on one price cell.
What the desk records, and what it refuses to invent
There is no founding year, plant count, or customer roster on this page because those facts are not in the site record. The method below is the work a buyer can actually ask for.
| Step | The desk does | The desk does not |
|---|---|---|
| Brief | Writes input, output, enclosure, quantity, destination, and a requested day. | Fill blank cells with a typical wattage from a brochure. |
| Search | Asks factories to answer the written rows. | Claim a private factory network or a reserved allocation. |
| Compare | Lines up replies that kept the same volts, current, and scope. | Publish a percentage gap or call one reply the market floor. |
| Handoff | Returns the sheet so the buyer can accept, reject, or add a test. | Sign a safety file or perform incoming inspection. |
Input questions include 100-240 VAC at 50 Hz and 60 Hz, or a -48 VDC plant feed. Frequency range belongs on the input row. Power rating belongs on the output row, in watts, next to volts and amperes. A cord, a lug, and a shelf rail stay outside the module cell until a supplier prices them.
Monitored shelf versus a plain brick
Side A, a monitored shelf: a controller can report alarms when the buyer’s network already uses that protocol, and the shelf height in rack units has to be named. One rack unit is 44.45 mm. Side B, a plain enclosed brick: it can be enough when the site only needs a local DC feed and nobody is asking for a remote alarm. The extra controller is then a cost and a spare the buyer may not want. LinkScope Sourcing 49 records which side the brief asked for. It does not declare one side suitable for every cabinet.
Background: a buyer sent a one-line note that said “telecom power, 10 amps.” Process: the desk returned three questions — 12 V, 24 V, or -48 V; enclosed, open-frame, or shelf; and the US destination — before any factory was copied. Result: the buyer split the note into a 24 V enclosed line and a separate -48 V shelf line. The scene shows a clarification step, not a completed purchase.
Hold-up, when a datasheet states it, is written in milliseconds at a stated load. Ripple, when stated, is in millivolts. Impedance in milliohms is copied only from the host spec. Ingress protection stays blank until the model sheet states a code. Runtime stays blank unless a UPS or a battery string is in the same order. Connector mating cycle is asked only when the inlet is a wear item. Measurement accuracy and calibration traceability apply to a meter in an acceptance plan, not to this website.
Questions the desk asks before a substitute stays on the sheet
Is cooling part of the model?
Fan and convection can share a marketing name and diverge at 40 °C or 50 °C. The desk asks for the curve on the named model. It does not pick the curve.
Is the evidence current?
A datasheet day, for example 2025-03-21, should sit beside the model. An FCC or NRTL sentence is useful only when it names that model. Switching capacity, forwarding rate, and Power over Ethernet describe other families and stay off this comparison.
The quote rows show the cells. The inquiry labels are starting names, not warehouse bins. The longer buyer note is the procurement brief.
Hand the brief to the desk
There is no file upload. Paste the lines into the requirement field: volts, amperes, enclosure, quantity, destination, and the day you hope to receive them. Optional budget and a high-end, mid-range, budget, or undecided preference can travel with the same field. A preference is not a factory rating, and a live quotation is not required before you send the note.