{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BSS4130AT116","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"BSS4130AT116","canonicalUrl":"https://icboms.com/rohm/BSS4130AT116","factsUrl":"https://icboms.com/api/mcp/products/BSS4130AT116","rawCanonicalId":null},"summary":{"shortDescription":"ROHM BSS4130AT116 NPN transistor, 30 V Vce, 1 A Ic, 400 MHz fT, hFE 270 @ 100 mA, Vce(sat) 350 mV @ 500 mA, SOT-23-3 package, 150°C junction temp.","salesMarkdown":"## What this NPN transistor brings to the board The ROHM BSS4130AT116 is a general-purpose NPN transistor rated for 30 V collector-emitter breakdown and 1 A continuous collector current, packed in a SOT-23-3 footprint. With a transition frequency of 400 MHz and a minimum DC current gain of 270 at 100 mA, it handles moderate-speed switching and amplification jobs without needing excessive base drive. The 150°C junction temperature rating means it can sit in warm spots — think engine-bay electronics, industrial control boxes, or power supply secondary-side circuits — without derating headaches. Pulling 1 A through a SOT-23 package is a thermal challenge: the 200 mW power limit means you cannot run that current continuously at full Vce. For a saturated switch at 350 mV drop, 1 A gives about 350 mW — already past the limit. So this part is really a 500 mA to 800 mA continuous switch in practice, with the 1 A rating for pulsed or low-duty-cycle loads. The low Vce(sat) of 350 mV at 500 mA keeps dissipation under 175 mW, which the package handles comfortably with standard PCB copper. ## Gain and speed — field-fit notes A minimum hFE of 270 at 100 mA means a 3.3 V logic output can drive this transistor into saturation with a 1 kΩ base resistor — no extra driver stage needed. The 400 MHz transition frequency is fast enough for 1–2 MHz switching regulators or signal buffers; for higher-frequency RF work you would look at a dedicated RF transistor. The 100 nA collector cutoff keeps leakage negligible at room temp, though it will climb with junction temperature — budget for that if the ambient is above 85°C.","metaTitle":"BSS4130AT116 NPN Transistor, 30V 1A SOT-23, 400MHz fT","metaDescription":"ROHM BSS4130AT116 NPN transistor: 30V Vce, 1A Ic, 400MHz fT, hFE 270, SOT-23-3. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Power - Max":"200 mW","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Transistor Type":"NPN","lifecycle_stage":"eol_hot","Operating Temperature":"150°C (TJ)","Frequency - Transition":"400MHz","Supplier Device Package":"SST3","Vce Saturation (Max) @ Ib, Ic":"350mV @ 25mA, 500mA","Current - Collector (Ic) (Max)":"1 A","Current - Collector Cutoff (Max)":"100nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"270 @ 100mA, 2V","Voltage - Collector Emitter Breakdown (Max)":"30 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.43","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.43000","currency":"USD"},{"qty":10,"price":"$0.33600","currency":"USD"},{"qty":100,"price":"$0.20180","currency":"USD"},{"qty":500,"price":"$0.18684","currency":"USD"},{"qty":1000,"price":"$0.12706","currency":"USD"},{"qty":3000,"price":"$0.11697","currency":"USD"},{"qty":6000,"price":"$0.11211","currency":"USD"},{"qty":9000,"price":"$0.10090","currency":"USD"},{"qty":30000,"price":"$0.09940","currency":"USD"},{"qty":75000,"price":"$0.09343","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/462792fc0ff2ec6a7b9d265e1a60f840.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum collector current of BSS4130AT116?","answer":"The maximum continuous collector current (Ic) is 1 A. In practice, the 200 mW power limit and SOT-23 thermal constraints mean continuous operation is typically limited to 500–800 mA at low Vce."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/BSS4130AT116","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/BSS4130AT116 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}}