{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"RB500SM-30T2R","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"RB500SM-30T2R","canonicalUrl":"https://icboms.com/rohm/RB500SM-30T2R","factsUrl":"https://icboms.com/api/mcp/products/RB500SM-30T2R","rawCanonicalId":null},"summary":{"shortDescription":"ROHM RB500SM-30T2R Schottky barrier diode, 30 V reverse voltage, 100 mA average rectified current, 450 mV forward voltage at 10 mA, SOD-523 surface-mount package.","salesMarkdown":"## Schottky barrier diode for low-power rectification and protection The RB500SM-30T2R is a small-signal Schottky barrier diode from ROHM, rated for 30 V reverse voltage and 100 mA average rectified current. It uses Schottky technology for a low forward voltage drop of 450 mV at 10 mA forward current, which keeps conduction losses minimal in low-voltage rails. This part targets applications where a low Vf Schottky is needed for polarity protection, OR-ing diodes, or freewheeling clamps in low-power DC circuits — think portable instruments, battery management, or auxiliary supplies in industrial control modules. ## What the 450 mV forward voltage means at the bench At 10 mA forward current, the Vf max is 450 mV — that's the voltage dropped across the diode when it's conducting. For a 3.3 V rail, that's a 14% drop; for a 5 V rail, about 9%. If your load draws 100 mA continuous, the forward voltage will climb above the 10 mA figure, so budget headroom in the rail voltage or use a higher-current Schottky if the drop eats into the regulation margin. Reverse leakage is 500 nA max at 10 V reverse bias. That's low enough to not drain a coin cell or affect a high-impedance sense node, but it doubles with temperature — at 85 °C junction, expect leakage to rise into the microamp range. If the diode sits on a 24 V bus, the leakage at 30 V reverse will be higher than the 10 V spec, so derate accordingly. ## SOD-523 footprint and reflow reality The RB500SM-30T2R comes in a SOD-523 package (also designated SC-79), a tiny 1.6 mm × 0.8 mm body with 0.50 mm pitch leads. That footprint is common for small-signal diodes, but the pad dimensions are tight — the solder paste stencil aperture needs to be matched to the copper land to avoid tombstoning during reflow. The supplier device package is listed as EMD2, which is ROHM's internal code for the SOD-523 outline. Mounting is surface-mount only. ## Active production — no last-time-buy risk ROHS3 compliance is confirmed, so it's suitable for new designs bound for EU or RoHS-regulated markets.","metaTitle":"RB500SM-30T2R Schottky Diode, 30V 100mA, SOD-523, Active","metaDescription":"ROHM RB500SM-30T2R Schottky barrier diode, 30V Vr(max), 100mA Io, 450mV Vf at 10mA. SOD-523 surface-mount package. Active lifecycle, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Speed":"Small Signal =< 200mA (Io), Any Speed","Package":"Tape & Reel (TR); Cut Tape (CT)","Technology":"Schottky","Mounting Type":"Surface Mount","Package / Case":"SC-79, SOD-523","lifecycle_stage":"eol_hot","Supplier Device Package":"EMD2","Current - Reverse Leakage @ Vr":"500 nA @ 10 V","Voltage - DC Reverse (Vr) (Max)":"30 V","Current - Average Rectified (Io)":"100mA","Operating Temperature - Junction":"150°C","Voltage - Forward (Vf) (Max) @ If":"450 mV @ 10 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.38","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.38000","currency":"USD"},{"qty":10,"price":"$0.26400","currency":"USD"},{"qty":100,"price":"$0.12890","currency":"USD"},{"qty":500,"price":"$0.10750","currency":"USD"},{"qty":1000,"price":"$0.07469","currency":"USD"},{"qty":2000,"price":"$0.06473","currency":"USD"},{"qty":8000,"price":"$0.06005","currency":"USD"},{"qty":16000,"price":"$0.04979","currency":"USD"},{"qty":24000,"price":"$0.04891","currency":"USD"},{"qty":56000,"price":"$0.04394","currency":"USD"},{"qty":200000,"price":"$0.03808","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7318652aab2319caa76ce1f6dffb7cee.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is RB500SM-30T2R RoHS compliant?","answer":"Yes, it is listed as ROHS3 compliant."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/RB500SM-30T2R","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/RB500SM-30T2R 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}}