Tracking a Test-Method Change in a PCN
Match a manufacturer's test-platform PCN to its affected codes, notice and attachment revisions, and correlation coverage before an engineering decision.
Read the guideGuide directory
Component sourcing guides
Browse component sourcing guides on this site. Open a guide to read its practical checks and source references; use the page links to continue through the directory.
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Make the next decision with better information.
Practical checks for component buyers and inventory holders, from the first enquiry to the agreed terms.
Choosing an RF Switch's Port Topology
Preserve RF common/branch routes, absorptive or reflective behavior and logical control requirements before choosing an RF switch candidate.
Read the guideChecking a Temperature Sensor's Accuracy Conditions
Review digital temperature-sensor accuracy separately from resolution, preserving variant, range, conditions and minimum/typical/maximum fields.
Read the guideSelecting SRAM by Access and Cycle Time
Keep SRAM address access, cycle, enable and write timing separate, with their limits and test conditions, before an engineering-approved purchase.
Read the guideSpecifying a Converter's Forced-PWM and Pulse-Skip Modes
Record a converter required mode, control context and load range using exact manufacturer terminology before comparing light-load sourcing candidates.
Read the guideChecking Resistor Working Voltage Separately from Wattage
Check a resistor operating-voltage field separately from its dissipation rating, retaining exact case, operating context and manufacturer conditions.
Read the guideHow to Choose a Digital Potentiometer's End-to-End Resistance
Separate digital-pot end-to-end resistance, wiper contribution, operating mode, tolerance and complete resistance ordering option in the sourcing requirement.
Read the guideHow to Check an Ethernet PHY's MAC Interface and Package
Keep an Ethernet PHY MAC interface, package option, strap/reset context and clock requirements linked to the exact device before a sourcing comparison.
Read the guideHow to Check SPI NOR Addressing Against the Bootloader
Review the exact NOR address state, reset default and startup access context against documented bootloader and programming requirements before sourcing.
Read the guideHow to Specify a Stepper Driver's Current Decay Mode
Distinguish a stepper driver's current decay mode from microstep selection, retain the documented configuration, and keep motor evaluation separate from catalogue features.
Read the guideHow to Review SAR ADC Acquisition Time and Source Impedance
Separate SAR ADC acquisition from conversion timing, identify the source and input-driver path, and retain settling requirements for engineering evaluation.
Read the guideHow to Specify an I2C Level Translator for Open-Drain Lines
Define an I2C translator's open-drain topology, reference rails, enable behavior and pullup context before comparing the exact candidate with the released bus.
Read the guideHow to Specify a Crystal's Load Capacitance for an Oscillator
Distinguish a crystal's specified load capacitance from external capacitor values, preserve oscillator and parasitic context, and leave tuning to engineering evaluation.
Read the guideHow to Check LDO Dropout at the Intended Load
Review LDO input-to-output headroom under the intended load, preserve dropout specification conditions, and distinguish regulation from dropout operation.
Read the guideHow to Check MOSFET On-Resistance at the Actual Gate Drive
Compare MOSFET on-resistance at documented gate-source bias and temperature, distinguish threshold voltage, and retain unsupported operating conditions for engineering review.
Read the guideHow to Compare an Inductor's Saturation and Thermal Current Ratings
Compare an inductor's saturation and thermal current definitions, retain their measurement criteria, and ask engineering to review the actual current waveform and environment.
Read the guideHow to Specify a Voltage Supervisor's Reset Function Before Sourcing
Identify a voltage supervisor's monitored rail, reset polarity and output type, delay configuration and manual-reset needs before requesting a quote.
Read the guideHow to Check an Op Amp's Input Range Before Proposing a Replacement
Review op amp supply rails, input common-mode requirements and output swing separately, then preserve conditions and engineering decisions for sourcing.
Read the guideHow to Specify MLCC Capacitance Under the Intended DC Bias
Keep nominal MLCC capacitance separate from the design requirement under applied voltage, and link the exact part to manufacturer data and engineering review.
Read the guideHow to Check a Legacy Connector's Mating Pair Before a Sourcing Inquiry
Define the requested housing, contact or header, identify its mating counterpart and controlling drawing, and record termination differences for engineering review.
Read the guideHow to Prepare a Revision-Controlled BOM for Component Sourcing
Prepare a component sourcing BOM with the approved assembly revision, variant, export scope, full ordering codes, quantity basis and a clear record of changes.
Read the guideHow to Specify an HBM-Related Item Before Requesting a Quote
Identify whether an HBM-related sourcing request concerns a memory device, accelerator module, board assembly or complete system, then specify its actual manufacturer ordering code or OEM SKU.
Read the guideWhat Is a Lifetime Buy and How to Calculate Your Quantity
Plan an electronic component lifetime buy using the coverage period, component demand, usable stock, confirmed inbound supply and documented uncertainty before approving a final purchase.
Read the guideAI Server Component Procurement: What to Prepare Before You Ask for a Quote
Prepare an AI server component RFQ with the exact part or OEM configuration, quantities, delivery schedule, date-code requirements, documents and quote comparison criteria.
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