IPB120N04S302 Datasheet, Stock, Price, Equivalent and RFQ Guide

Answer first: IPB120N04S302 should be sourced through an evidence-led RFQ, not through a static stock or price promise. Start from the SENICO product reference at IPB120N04S302, confirm the manufacturer path through Infineon Technologies, and keep the request tied to FETs and MOSFETs. Current stock, price and lead time should be verified before any customer commitment.

Exact sourcing answer

The controlled identity is Infineon 40 V MOSFET sourcing for the 120N04 S302 lane with 120N04 current class and S302 segment without an added ATMA route 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 IPB120N04S4L03, IPB100N04S3, IPB023N04NGATMA1 and other Infineon 40 V 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

120N04 should remain separate from 100N04 or 023N04 rows because current class and resistance margin can change.

S302 should stay visible because S4L03 or NG rows may change generation, gate charge and package assumptions.

Ask whether the design depends on 40 V margin, high-current conduction loss, switching waveform, thermal pad behavior or customer AVL wording.

Supplier replies should include full Infineon code, label photo, lot/date-code range, package condition, source route and warranty.

If IPB120N04S4L03 is offered, document changed segment and approval owner before price comparison.

If an ATMA-suffixed N04 row is proposed, keep it in route-change review until packing and receiving differences are approved.

Receiving should compare 120N04 and S302 wording against purchase order, invoice and reel label evidence.

If exact stock is partial, separate exact S302 material, factory lead time and 40 V review candidates.

A lower-price N04 row should not outrank missing S302 proof, changed current class or unclear warranty support.

For high-current boards, ask whether heat-rise or EMI testing was tied to this S302 row before accepting alternates.

For repeat production, store accepted S302 segment boundaries and rejected S4/NG route changes beside the BOM record.

Customer-facing substitute notes should state voltage class, current class, segment and approval changes before any alternate is presented.

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

For IPB120N04S302, keep the 40 V N04 class, S302 suffix and IPB package identity connected to the complete Infineon orderable code. Marketplace rows may group S204, S303, S4, S402 and nearby N04 or N06 parts, so the RFQ should require exact code evidence, package and marking photos, label text, packing condition, date-code range, traceability paperwork and source route.

Equivalent screening should compare voltage headroom, RDS(on), current capability, gate charge, drive condition, thermal path, footprint and customer AVL status. A low-voltage MOSFET with a similar current lane can still fail approval when the S302 suffix or voltage class changes.

Keep S302 offers in a separate review lane from S204, S303 and S4 material until the approval note is closed.

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.