{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BCR129WH6327","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BCR129WH6327","canonicalUrl":"https://icboms.com/infineon/BCR129WH6327","factsUrl":"https://icboms.com/api/mcp/products/BCR129WH6327","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BCR129WH6327 NPN pre-biased transistor, 50 V VCEO, 100 mA Ic, 150 MHz transition frequency, 10 kΩ base resistor, SC-70 SOT-323 package, surface mount.","salesMarkdown":"## Pre-biased NPN in a tiny SC-70 The Infineon BCR129WH6327 is an NPN pre-biased transistor that integrates a 10 kΩ base resistor (R1) into the same SC-70 SOT-323 package. This eliminates one external resistor per switching node, which simplifies the BOM and shrinks the layout for high-density boards. It is rated for collector currents up to 100 mA and a collector-emitter breakdown voltage of 50 V, making it a fit for 24 V industrial logic and 48 V telecom control signals. The 150 MHz transition frequency keeps switching edges clean for low-speed PWM and relay drivers up to a few hundred kilohertz. ## Saturation and drive margin VCE(sat) is specified at 300 mV maximum with a base current of 500 µA and collector current of 10 mA. The minimum DC current gain of 120 at 5 mA, 5 V ensures consistent switching behaviour across production lots. Collector cutoff current is 100 nA maximum, which keeps leakage negligible in battery-powered or high-impedance circuits. ## Package and power handling Housed in a PG-SOT323-3-1 package (SC-70 equivalent), this is a three-lead surface-mount device. Maximum power dissipation is 250 mW, so it suits low-power switching and signal conditioning rather than continuous high-current loads. The small footprint makes it a candidate for space-constrained designs like sensor modules, I/O blocks, and portable equipment.","metaTitle":"BCR129WH6327 NPN Pre-Biased Transistor, 50 V, 100 mA, SC-70","metaDescription":"BCR129WH6327 NPN pre-biased transistor, 50 V VCEO, 100 mA Ic, 150 MHz fT, 10 kΩ base resistor integrated. SC-70 SOT-323 package. Active, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Infineon Technologies","Series":"-","Package":"Bulk","Power - Max":"250 mW","Mounting Type":"Surface Mount","Package / Case":"SC-70, SOT-323","Product Status":"Active","Transistor Type":"NPN - Pre-Biased","lifecycle_stage":"eol_hot","Resistor - Base (R1)":"10 kOhms","Frequency - Transition":"150 MHz","Supplier Device Package":"PG-SOT323-3-1","Vce Saturation (Max) @ Ib, Ic":"300mV @ 500µA, 10mA","Current - Collector (Ic) (Max)":"100 mA","Current - Collector Cutoff (Max)":"100nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"120 @ 5mA, 5V","Voltage - Collector Emitter Breakdown (Max)":"50 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.0400","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0bae00cc91f30b9773243d40a61efc56.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to BCR129WH6327?","answer":"Several Infineon pre-biased NPN transistors in the same SOT323 package share the same pinout and similar ratings. The key difference is the base resistor value; the BCR129WH6327 uses a 10 kΩ R1. Parts with different R1 values (e.g., 2.2 kΩ or 47 kΩ) are not drop-in replacements without adjusting the drive circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BCR129WH6327","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BCR129WH6327 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}}