{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"IPS1021RTRRPBF","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"IPS1021RTRRPBF","canonicalUrl":"https://icboms.com/infineon/IPS1021RTRRPBF","factsUrl":"https://icboms.com/api/mcp/products/IPS1021RTRRPBF","rawCanonicalId":null},"summary":{"shortDescription":"Infineon IPS1021RTRRPBF, low-side switch, 1 output, N-channel, 20 mOhm typ Rds(on), 4.3 A max, 28 V max load, non-inverting, On/Off interface, D-Pak (TO-252-3), -40°C to 150°C, Tape & Reel.","salesMarkdown":"## Low-side switch with 20 mOhm on-resistance The Infineon IPS1021RTRRPBF is a single-channel low-side N-channel power switch in a D-Pak (TO-252-3) package. The input is non-inverting with a simple On/Off interface — no Vcc supply is required, so the gate drive comes directly from the logic signal. ## 4.3 A output and 150°C junction rating Rated for continuous output current up to 4.3 A, the IPS1021RTRRPBF is sized for solenoid, relay, lamp, and general-purpose inductive or resistive loads in the 2–4 A range. The 20 mOhm typical Rds(on) at 25°C means I²R losses at 4 A are roughly 0.32 W — the D-Pak copper pad area on the PCB must be sized to keep the junction below the 150°C ceiling. ## Integrated fault protection reduces external circuitry The switch includes fixed current limiting and over-temperature protection, so it handles short-circuit and thermal overload without an external sense resistor or fuse. The 1:1 input-to-output ratio means one logic signal controls one load channel. Fault protection kicks in autonomously — the switch latches off or cycles depending on the fault condition, protecting the load and the PCB trace. ## Obsolete — sourced through surplus and broker channels Infineon lists the IPS1021RTRRPBF as Obsolete. No pin-compatible second source is documented in the available records.","metaTitle":"IPS1021RTRRPBF Low-Side Switch, 20 mOhm, 4.3 A, Obsolete","metaDescription":"IPS1021RTRRPBF is an obsolete Infineon low-side switch with 20 mOhm Rds(on), 4.3 A output, -40°C to 150°C range.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","Package":"Tape & Reel (TR)","Features":"-","Interface":"On/Off","Input Type":"Non-Inverting","Output Type":"N-Channel","Switch Type":"General Purpose","Rds On (Typ)":"20mOhm","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","Product Status":"Obsolete","Voltage - Load":"28V (Max)","lifecycle_stage":"eol_hot","Fault Protection":"Current Limiting (Fixed), Over Temperature","Number of Outputs":"1","Base Product Number":"IPS1021","Output Configuration":"Low Side","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C ~ 150°C (TJ)","Current - Output (Max)":"4.3A","Supplier Device Package":"D-Pak","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f10c3f059773e7a4a60b663d9094e96b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/IPS1021RTRRPBF/alternatives.json"},"ai":{"faq":[{"question":"What does the 20 mOhm Rds(on) mean for my design?","answer":"The 20 mOhm typical on-resistance at 25°C sets the conduction loss floor. At 4 A output, I²R dissipation is roughly 0.32 W. The D-Pak package relies on the PCB copper area for heat spreading — ensure the junction temperature stays below 150°C under worst-case load and ambient conditions. The actual Rds(on) increases with junction temperature; derate the continuous current accordingly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/IPS1021RTRRPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/IPS1021RTRRPBF when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}