A resistor-network RFQ needs the internal circuit as well as the resistance value and package. An isolated array, a bussed network and a precision divider can look similar while connecting pins differently. Use the complete manufacturer part number and a schematic reference to make each availability request unambiguous.
Identify the internal connections
Check how many resistor elements the design uses and whether they share a common terminal. Record every resistance value and the associated pins. If a single value appears in the BOM description, confirm whether it applies to all elements or only part of a divider network.
Vishay’s resistor-network selector distinguishes electrical characteristics such as absolute tolerance, ratio tolerance and temperature tracking. Its array product information provides another route to the relevant series documentation. Select by the actual circuit requirement rather than assuming that matching package dimensions imply matching connections.
Decide whether matching or absolute accuracy matters
For pull-ups or simple current limiting, individual resistance tolerance may be the main concern. For a divider or differential amplifier, the ratio between resistors can be more important. State the required ratio tolerance and temperature tracking when the circuit depends on them.
Review the power allowed in each element and in the whole package, including the applicable temperature derating. Check voltage limits and any unequal loading between elements. A network can meet a total resistance target yet be unsuitable when one resistor dissipates much more heat than the others.
Connect sourcing to assembly and validation
Provide the manufacturer, complete ordering code, package, topology, values and packing format. Include quantity and required arrival date. Ask for the offered lot information and documentation, and identify any proposed alternate as a separate line for engineering review.
For a precision application, test the finished divider or amplifier over the intended operating conditions. For digital applications, check the resulting logic levels and load currents. Confirm orientation and pin-one identification in the assembly drawing, especially where an incorrect network can still appear mechanically correct on the board.
Frequently asked questions
Can discrete resistors replace a network?
Possibly, but review board area, routing, tolerance and temperature tracking. The network’s matching behavior may be part of the circuit’s error budget.
Does a tighter individual tolerance guarantee a better divider?
No. Ratio accuracy and tracking across temperature determine important divider errors. Compare those specifications under the conditions required by the application.
Request resistor-network availability from SENICO with the full part number and internal circuit requirements. Price, offered quantity and delivery timing need quotation confirmation.