# MPN Radar > MPN Radar is the public website for Chip Monitor, an electronic component > stock monitoring service at https://mpnradar.com/. It helps purchasing and > engineering teams monitor supplier availability by exact manufacturer part > number (MPN), with source and change evidence attached to every observation. MPN Radar lets an operator add an exact manufacturer part number (MPN), discover matching electronic component supplier offers, and keep one timestamped view of stock, price breaks, lead time, minimum order quantity (MOQ), and order limits. It preserves the source and evidence for every observation; an unavailable or rate-limited supplier is reported as a collection issue, not silently converted into zero inventory. The platform administrator controls which supplier channels are enabled and manages their quota pools and credentials. Monitoring does not place an order by default; supported ordering workflows require separate administrator enablement and explicit quantity, price, and production safeguards. ## Facts - MPN Radar is the public website for the Chip Monitor product at https://mpnradar.com/ . - It monitors electronic component stock and supplier availability for exact manufacturer part numbers. - It records stock, volume price breaks, and lead times from connected suppliers such as DigiKey, Mouser, and Texas Instruments, and keeps the source channel and observation time with every change. - A collection failure stays a collection failure; it is never stored as zero stock. - Monitoring does not place an order unless an administrator separately enables a safeguarded supplier workflow. - Monitoring allowance counts distinct model/channel pairs: one model on two channels uses two slots. The pricing page is the authoritative current catalog for plan capacity and prices. Plan minimum intervals do not override channel quota, failure backoff or stable-stock slowdown. Automatic Texas Instruments/Mouser ordering is available only on Business through a separately authorized workflow; it never automatically pays. - English marketing pages live at https://mpnradar.com/ . Simplified Chinese marketing pages live at https://mpnradar.com/zh-CN/ . - Supported public channel families: DigiKey, Mouser, Texas Instruments, Microchip, element14, Future Electronics, and Arrow. Verical offers arrive with the Arrow feed. ## Core pages - [Home](https://mpnradar.com/): Product overview, supported channels, workflow, and FAQ - [Pricing](https://mpnradar.com/pricing/): Public monitoring plans and account capacity boundaries - [Home (Simplified Chinese)](https://mpnradar.com/zh-CN/): Chinese product overview for the same monitoring workspace - [Pricing (Simplified Chinese)](https://mpnradar.com/zh-CN/pricing/): Chinese public monitoring plans - [DigiKey integration](https://mpnradar.com/integrations/digikey/): Inventory, price-break, lead-time, and source evidence for exact part numbers - [DigiKey integration (Simplified Chinese)](https://mpnradar.com/zh-CN/integrations/digikey/): Chinese guide to DigiKey inventory, pricing, lead-time, and evidence monitoring - [Mouser integration](https://mpnradar.com/integrations/mouser/): Exact-MPN stock and quantity-aware pricing with timestamped source evidence - [Mouser integration (Simplified Chinese)](https://mpnradar.com/zh-CN/integrations/mouser/): Chinese guide to Mouser stock, quantity-aware pricing, and source boundaries - [Texas Instruments integration](https://mpnradar.com/integrations/ti/): Texas Instruments part-availability monitoring through the configured Store or approved API source; ordering authorization is separate - [Texas Instruments integration (Simplified Chinese)](https://mpnradar.com/zh-CN/integrations/ti/): Chinese guide to TI stock, price, lead-time, and ordering boundaries - [Microchip integration](https://mpnradar.com/integrations/microchip/): Inventory-focused monitoring through the official MCP connection - [Microchip integration (Simplified Chinese)](https://mpnradar.com/zh-CN/integrations/microchip/): Chinese guide to Microchip inventory-focused monitoring - [Arrow integration](https://mpnradar.com/integrations/arrow/): Inventory and pricing through the official API, including Verical offers in the Arrow feed - [Arrow integration (Simplified Chinese)](https://mpnradar.com/zh-CN/integrations/arrow/): Chinese guide to Arrow and Verical inventory and pricing signals - [element14 integration](https://mpnradar.com/integrations/element14/): Exact-MPN stock, price-break, lead-time, and MOQ monitoring - [element14 integration (Simplified Chinese)](https://mpnradar.com/zh-CN/integrations/element14/): Chinese guide to element14 and Farnell inventory, pricing, and lead times - [Future Electronics integration](https://mpnradar.com/integrations/future/): Exact-MPN stock, volume pricing, lead-time, and MOQ monitoring - [Future Electronics integration (Simplified Chinese)](https://mpnradar.com/zh-CN/integrations/future/): Chinese guide to Future Electronics inventory, pricing, and factory lead times - [Sign up](https://mpnradar.com/signup): Create an account - [Log in](https://mpnradar.com/login): Open the monitoring workspace - [Privacy](https://mpnradar.com/privacy/): How account and monitoring data is collected and stored - [Terms](https://mpnradar.com/terms/): Terms for using Chip Monitor - [Blog](https://mpnradar.com/blog/): Guides on electronic component stock, price, lead time, and sourcing signals - [Blog (Simplified Chinese)](https://mpnradar.com/zh-CN/blog/): Guides to component stock monitoring, inventory lookup, price, lead time, and BOM sourcing - [Blog RSS](https://mpnradar.com/blog/rss.xml): Published guide feed ## Supported channel families - DigiKey: inventory, pricing, and lead-time monitoring through an enabled source, identified on each observation - Mouser: inventory and quantity-aware pricing through an enabled source, identified on each observation - Texas Instruments: platform-selected Store or approved API monitoring; ordering is a separate, explicit administrator-authorized workflow - Microchip: official MCP connection managed by the platform; current evidence is inventory focused and does not imply price or order support - Arrow / Verical: separate offer channels with region-specific discovery - element14 and Future Electronics: source-labeled monitoring subject to region, coverage, and quota Actual availability is shown in the administrator channel console and depends on the selected transport, credentials, region, upstream permissions, and quota. A configured adapter is not proof that an external supplier account has been approved. ## Operational contract - Every observation carries source, region, offer channel, timestamp, and an evidence code. - `IN_STOCK` and `OUT_OF_STOCK` mean a fresh successful observation; `UNKNOWN`, `BLOCKED`, `ERROR`, and `STALE` are not purchasable states. - Collection requests are coalesced by a bounded in-process replay cache; PostgreSQL run and lease fences protect persisted effects across restarts. - Each alert has one delivery attempt per enabled destination. Failed or uncertain deliveries are not automatically retried; delivery IDs remain stable. The public site does not expose private supplier credentials, tenant data, or administrator routes.