Independent sourcing partner for Telecom Infrastructure · factory quotations compared on the same supply, quantity, and destination

QUOTE LEDGER

switching power supply suppliers must answer the same rows

LinkScope Sourcing 49 is an independent sourcing partner. This page lists the cells switching power supply suppliers should fill before two module figures are placed in one column. It is a worksheet, not a plant tour and not a promise that a named factory will bid.

Printed quotation rows for input, output, cooling, and freight beside an enclosed supply
  • Input and frequency range
  • Volts, amperes, watts
  • Cooling and environment
  • Freight and duty cells

Evidence ledger each supplier reply should complete

Ask for a datasheet day, for example 2024-11-03, next to the model. A brochure dated in a different year cannot stand in for that row. The buyer note published 2026-10-27 uses the same rule.

RowWhat the supplier writesWhat stays out of the cell
Identity Maker, model, and the exact output: 12 V at 10 A (120 W) or 24 V at 10 A (240 W). A family name that covers several wattages.
Input 100-240 VAC at 50 Hz and 60 Hz, or -48 VDC, plus the inlet or lug. A photo of a cord that is not in the quote.
Cooling Fan or convection, airflow, and the curve at 40 °C and at 50 °C. A room-temperature banner with no ambient stated.
Evidence Current datasheet, drawing, and any safety file that names the model. An NRTL or FCC claim that does not cite the model.
Money scope Currency, per-module or whole-order basis, Incoterm, freight, and duties. A headline number that hides the cord and the shelf.

Measurement accuracy belongs on a meter line. Calibration traceability is requested only when acceptance uses that meter. Connector mating cycle is requested only when the inlet is a wear item. Impedance, in milliohms, is requested only when the radio vendor wrote it into the host spec. Rack unit height is requested for shelves: 44.45 mm per unit. Runtime is requested only when a battery string is in the same order.

New module versus refurbished module

Side A, new: a new build can make the support path and the safety file easier to read, and the buyer may prefer it when the site will run for years. Side B, refurbished: a refurbished unit can be the practical path when a legacy footprint is discontinued, provided condition, test notes, and warranty months are written. LinkScope Sourcing 49 does not grade either path. The preference control on the form is the buyer choice, not a verified rank.

Background: a regional operator compared four supplier sheets for enclosed 24 V bricks. Process: the desk moved fan kits, shelf rails, and freight into their own rows and required the 240 W figure beside the model. Result: two sheets that looked compact were 12 V 120 W units plus a separate converter, so they were not compared as 24 V bricks. This is a procurement situation, not a customer award.

Compatibility questions before a substitute is accepted

Will the host accept the volts?

A radio labeled 24 V nominal may allow a band. Ask the host manual for the minimum and maximum, and ask the supply sheet for regulation. A 12 V substitute is not a small deviation. Power over Ethernet on a downstream switch does not change the brick voltage.

Does the enclosure fit the site?

Measure depth, including the inlet, before you accept a longer body. Ingress protection is meaningful only for the environment you named: indoor rack, outdoor cabinet, or a washed wall. Switching capacity and forwarding rate are still switch terms. Leave them off this page.

What did the quote exclude?

Cords, lugs, shelf controllers, and commissioning are easy to omit. A sample of 1 unit and a lot of 50 units should show whether the exclusion list changes. Delivery timing should name a day, such as 2025-08-15, for that quantity.

What this desk will not decide

  • It will not declare two models interchangeable because the watt numbers match.
  • It will not hold a safety certificate or speak as the manufacturer.
  • It will not convert an unverified sentence into a site claim about ripple or hold-up.

Start from the inquiry rows, then send the aligned sheet through the form. The longer checklist sits in the procurement brief.

Paste the BOM lines into the brief

There is no file upload on this desk. Copy each power line into the requirement field: model wish, volts, amperes, quantity, destination, and the day you hope to receive it. Accessories stay on following lines so a shelf rail is not buried in the module figure.

Please enter your name.
Please enter a valid work email.
Please enter your company.

Submitting lets the desk review the brief and contact factories. Read the Privacy Policy. Stock, price, fit, and compliance stay unconfirmed until a named supplier answers the exact module.