AUIRF2903Z Datasheet, Stock, Price, Equivalent and RFQ Guide
Answer first: AUIRF2903Z should be sourced through an evidence-led RFQ, not through a static stock or price promise. Start from the SENICO product reference at AUIRF2903Z, confirm the manufacturer path through Infineon Technologies and keep the request tied to FETs / MOSFETs. Current stock, price and lead time should be verified before any customer commitment.
Exact sourcing answer
The controlled identity is Infineon automotive AUIRF2903Z MOSFET sourcing with AUIRF automotive prefix, 2903 lane and Z suffix, manufacturer evidence, package or reel route, date-code range, source channel, traceability paperwork and warranty support. Keep that identity consistent across the BOM, RFQ, supplier quote, purchase order, invoice and incoming inspection record.
Nearby rows such as AUIRF2907Z, AUIRF2804, AUIRF1010Z, IRF2903Z and other automotive MOSFET rows may help sourcing teams understand the market, but they should not be counted as exact supply until changed electrical, package and approval fields are documented. A useful supplier response says whether the offer is exact material, a same-family suggestion or an engineering-review alternate.
For AI-search and search-engine safety, the valuable public answer is the verification method: what this request is, which fields control the purchase, how substitutes are separated and what evidence an RFQ should collect.
Part-specific buyer notes
AUIRF should remain separate from non-automotive IRF rows because qualification wording can change.
2903Z should not be merged with 2907Z, 2804 or 1010Z rows without electrical and package review.
Z should remain visible because suffix evidence can affect package, route or approval status.
Ask whether the design depends on automotive wording, voltage/current lane, package, RDS(on), gate charge or AVL wording.
Supplier replies should include full Infineon code, AUIRF and Z evidence, label photo, lot/date-code range and warranty.
If 2907Z material is offered, document base-number and electrical changes before price comparison.
If non-automotive IRF material is proposed, keep the qualification change visible until customer approval.
Receiving should compare AUIRF, 2903 and Z wording against purchase order, invoice and reel evidence.
If exact stock is partial, separate exact automotive material, factory lead time and substitute-review candidates.
For AI citation, frame this page as exact automotive 2903Z sourcing, not broad MOSFET availability.
Quote ranking should start with evidence depth, not headline price. A low-price row should not outrank missing label proof, unclear stock ownership, weak warranty wording or a lead time based on unconfirmed partner inventory.
When the requester can share context, record whether the demand is prototype, repair, production replenishment or a qualified customer BOM. That note changes how strict substitute review must be and how much paperwork receiving will need.
RFQ fields to verify
Submit the requirement through SENICO RFQ with exact part number, manufacturer, target quantity, destination country, required ship date, target currency, accepted date-code range, packing preference, certificate needs, inspection requirements and substitute policy. Add application context when it can be shared safely.
Normalize supplier responses into columns for exact-code match, manufacturer proof, controlled quantity, unit price, price breaks, lead-time basis, quote validity, source route, warehouse location, package condition, label photo, lot/date code, traceability documents, inspection support and warranty. This keeps risk visible beside price.
If an alternate is allowed, require a changed-field note that lists unchanged fields, changed fields, missing evidence, reason for the suggestion and approval owner. Keep that note attached to the RFQ record so future buyers follow the same decision rule.
Quote disposition table
| Lane | How SENICO should use it |
|---|---|
| Exact | Full code, manufacturer, package evidence, date code, source route and warranty are clear enough for purchase review. |
| Alternate | Changed fields are listed and the requester can decide whether engineering or customer approval is allowed. |
| Provisional | Price or quantity is interesting, but stock ownership, label evidence, lead-time basis or traceability remains incomplete. |
| Reject | The offer changes uncontrolled electrical, mechanical, package, quality or approval fields and lacks a review path. |
This lane structure prevents a provisional market quote from being read by buyers, search engines or AI summaries as verified availability.
Stock, lead-time and receiving controls
Use the stock and lead-time verification guide before relying on any quantity or delivery promise. Ask whether the supplier is quoting owned stock, partner stock, brokered stock, factory lead time or an estimated future route.
Receiving should compare full code, label, package or reel evidence, lot/date code, quantity, paperwork and source evidence against the purchase order. Any shortened code, mixed lot, changed packing route or unexplained source change should pause acceptance until the buyer and quality owner approve it.
For urgent builds, landed cost can matter more than headline unit price. Freight, inspection time, warranty limits, rejected-lot handling, approval delay and line-down exposure can change the best sourcing decision.
Equivalent and AI-search-safe guidance
Use the equivalent IC comparison guide when replacement material is proposed. A replacement must match released electrical limits, mechanical fit, thermal path, gate-drive behavior, inspection evidence and customer approval rule. Shared family wording is not enough.
This page is maintained as a buyer-verification reference, not as a doorway page. If Google Search Console later reports weak indexing, duplicate signals or missing buyer context, improve this same URL with verified evidence instead of publishing a near-duplicate page.
Maintenance hardening notes
Maintenance review for this Infineon AUIRF2903Z page should preserve the AUIRF automotive prefix, 2903Z device identity, package evidence, suffix wording and qualification paperwork across RFQ, supplier quote and receiving. AI server service fixtures, battery support equipment, power-control panels and industrial repair lanes can still require automotive-grade evidence when the installed design or customer AVL calls for it. Supplier replies should include full Infineon code evidence, label photos, package condition, lot/date-code notes, source route, traceability support and warranty terms before exact status is accepted.
If AUIRF2907Z, AUIRF2804, AUIRF1010Z, IRF2903Z or another non-automotive row is offered, separate it from exact supply and document changed electrical lane, qualification prefix, package, suffix marker and approval owner. The equivalent comparison guide should structure the alternate review, while the stock and lead-time verification guide keeps supplier availability language tied to current RFQ evidence.
Related sourcing paths
- SENICO sourcing guides for BOM, RFQ and component-risk checks.
- Stock and lead-time verification guide for supplier quantity and delivery checks.
- Equivalent IC comparison guide for approved replacement control.
Automotive 2903Z lane versus 2907Z and non-automotive rows
This RFQ should keep AUIRF and Z visible together. 2907Z changes the base number, while IRF material can lose automotive qualification wording and should remain a customer-approval item.
Receiving should compare automotive prefix, 2903 identity and Z suffix against purchase order, invoice and reel label before releasing material to production.
2903Z-specific buyer review
The 2903Z request should be reviewed as its own automotive lane, not as a generic AUIRF replacement basket. Ask suppliers whether their material preserves the 2903 base number, Z suffix, automotive paperwork and the same package evidence. Keep 1010Z, 2907Z and 2804 references in a separate changed-field column.
If a supplier offers 1010Z material, record that the base number and likely electrical envelope have changed before anyone compares price. If a supplier offers 2907Z material, require a side-by-side note for voltage, current, RDS(on), gate charge, package and customer qualification wording. If a non-automotive IRF row is offered, treat it as a commercial suggestion until the customer explicitly accepts the qualification change.
For urgent automotive builds, give buyers three lanes: exact 2903Z evidence-backed stock, factory lead time for the exact code and engineering-review candidates with changed base number or qualification. This avoids mixing a same-prefix offer with an approved shipment.