{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BSP129L6327","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BSP129L6327","canonicalUrl":"https://icboms.com/infineon/BSP129L6327","factsUrl":"https://icboms.com/api/mcp/products/BSP129L6327","rawCanonicalId":null},"summary":{"shortDescription":"Infineon SIPMOS® N-Channel Depletion Mode MOSFET, BSP129L6327, 240 Vds, 350 mA, 6 Ohm Rds(on) at 10 V, PG-SOT223-4-21 surface mount, -55 to 150 °C.","salesMarkdown":"## Depletion-mode 240 V MOSFET in a SOT223 footprint Depletion-mode means the device is normally on at zero gate voltage — it conducts until a negative Vgs pinches it off. That makes it the natural choice for normally-on switch applications, current-source biasing, linear regulator pass elements, and cascode stages where an enhancement-mode part would fail to start up. The 6 Ohm maximum on-resistance at 350 mA and 10 V drive keeps conduction losses manageable in low-to-moderate current paths. Housed in a PG-SOT223-4-21 surface-mount package (TO-261-4 equivalent). The four-pin SOT223 footprint is common for medium-power discretes; the large tab provides the drain connection and a primary thermal path to the board copper. Gate threshold voltage is 1 V maximum at 108 µA drain current — typical for a depletion-mode device. Maximum gate-to-source voltage is ±20 V, giving good noise margin on the drive line. Gate charge is 5.7 nC at 5 V, and input capacitance is 108 pF at 25 V drain bias. These low values mean the gate driver sees a light capacitive load, so switching losses stay low even with modest drive current. The drive voltage range for rated Rds(on) is 0 V to 10 V, reflecting the depletion-mode characteristic: at Vgs = 0 V the channel is fully enhanced. ROHS3 compliant.","metaTitle":"Infineon BSP129L6327 SIPMOS N-Ch Depletion MOSFET, 240V","metaDescription":"Infineon BSP129L6327 SIPMOS N-channel depletion-mode MOSFET, 240 Vds, 350 mA, 6 Ohm Rds(on), PG-SOT223-4. Active, ROHS3. Available to order.","metaKeywords":null},"attributes":{"series":"SIPMOS®","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Series":"SIPMOS®","Package":"Bulk","FET Type":"N-Channel","Vgs (Max)":"±20V","Technology":"MOSFET (Metal Oxide)","FET Feature":"Depletion Mode","Mounting Type":"Surface Mount","Package / Case":"TO-261-4, TO-261AA","lifecycle_stage":"eol_hot","Vgs(th) (Max) @ Id":"1V @ 108µA","Operating Temperature":"-55°C ~ 150°C (TJ)","Rds On (Max) @ Id, Vgs":"6Ohm @ 350mA, 10V","Power Dissipation (Max)":"1.8W (Ta)","Supplier Device Package":"PG-SOT223-4-21","Gate Charge (Qg) (Max) @ Vgs":"5.7 nC @ 5 V","Drain to Source Voltage (Vdss)":"240 V","Input Capacitance (Ciss) (Max) @ Vds":"108 pF @ 25 V","Drive Voltage (Max Rds On, Min Rds On)":"0V, 10V","Current - Continuous Drain (Id) @ 25°C":"350mA (Ta)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.27","priceTiers":[{"qty":1126,"price":"$0.27000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1f6926f4d938c2e13ddc16552b851f32.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BSP129L6327/alternatives.json"},"ai":{"faq":[{"question":"Can BSP129L6327 be used in high-voltage applications?","answer":"Yes, the drain-to-source voltage rating is 240 V, making it suitable for high-voltage DC rails up to that level in applications like off-line auxiliary supplies, industrial converters, and cascode stages."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BSP129L6327","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BSP129L6327 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:51:14.863Z","lastPublished":"2026-07-22T18:51:14.863Z","indexable":true}}