{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BCR503E6327HTSA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BCR503E6327HTSA1","canonicalUrl":"https://icboms.com/infineon/BCR503E6327HTSA1","factsUrl":"https://icboms.com/api/mcp/products/BCR503E6327HTSA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BCR503E6327HTSA1 NPN pre-biased transistor, 50 V Vce breakdown, 500 mA collector current, 100 MHz transition frequency, built-in 2.2 kOhm base and emitter-base resistors, PG-SOT23 package.","salesMarkdown":"## Pre-biased NPN for space-constrained digital outputs The Infineon BCR503E6327HTSA1 is an NPN pre-biased transistor in a PG-SOT23 package, integrating two 2.2 kOhm resistors — one in series with the base, one between base and emitter. This internal bias network eliminates the two external resistors normally required for a saturated switch, saving board area and reducing component count in digital output stages, relay drivers, and logic-level interface circuits. With a collector-emitter breakdown voltage of 50 V and a continuous collector current rating of 500 mA, it suits low-side switching of inductive loads such as small relays, solenoids, and indicator lamps in 12 V and 24 V industrial control systems. The 100 MHz transition frequency is adequate for PWM dimming and low-speed switching up to several hundred kilohertz. ## Last Buy — plan the final order The BCR503E6327HTSA1 carries a Last Buy lifecycle status. This means Infineon has announced a final production window; after that date the part will no longer be manufactured. Procurement should confirm the last-time-buy deadline with their Infineon contact or distributor and place a lifetime buy to cover forecasted demand. Once the LTB window closes, supply will shift to the independent surplus channel, where pricing and availability become less predictable. For new designs, consider evaluating a current-production pre-biased transistor from the same BCR5xx family with similar resistor ratios and package footprint. The base product number BCR503 indicates the 2.2 kOhm / 2.2 kOhm bias configuration; other members of the family offer different resistor values for varying drive requirements. ## Sourcing for sustainment programs Because the BCR503E6327HTSA1 is in Last Buy, it is not available through the standard new-production channel. We source this part through our independent distribution network, which includes franchised overstock, authorized-distributor excess, and verified surplus inventory. This channel is the primary option for medical, defense, and industrial sustainment programs that need to bridge the gap between the LTB and a qualified replacement.","metaTitle":"Infineon BCR503E6327HTSA1 NPN Pre-Biased Transistor, 50 V","metaDescription":"Infineon BCR503E6327HTSA1 NPN pre-biased transistor, 50 V Vceo, 500 mA Ic, 100 MHz ft, in SOT-23 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Power - Max":"330 mW","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Last Time Buy","Transistor Type":"NPN - Pre-Biased","lifecycle_stage":"eol_hot","Base Product Number":"BCR503","Resistor - Base (R1)":"2.2 kOhms","Frequency - Transition":"100 MHz","Supplier Device Package":"PG-SOT23","Resistor - Emitter Base (R2)":"2.2 kOhms","Vce Saturation (Max) @ Ib, Ic":"300mV @ 2.5mA, 50mA","Current - Collector (Ic) (Max)":"500 mA","Current - Collector Cutoff (Max)":"100nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"40 @ 50mA, 5V","Voltage - Collector Emitter Breakdown (Max)":"50 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.5400","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/43f6e03ae332a53c3a0636b798b6c26e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is BCR503E6327HTSA1 obsolete?","answer":"The BCR503E6327HTSA1 carries a Last Buy status, meaning Infineon has scheduled its end of production. It is not yet obsolete — there is a final order window — but it will become obsolete once that window closes. Plan a lifetime buy or identify a replacement now."},{"question":"Can BCR503E6327HTSA1 be used in SOT-23 package?","answer":"Yes. The BCR503E6327HTSA1 is supplied in a PG-SOT23 package (TO-236-3 / SC-59 / SOT-23-3 footprint), which is the standard SOT-23 three-lead surface-mount package. It is compatible with any SOT-23 land pattern."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BCR503E6327HTSA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BCR503E6327HTSA1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}