{"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. 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","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,"alternativesUrl":"https://icboms.com/api/mcp/products/RB500SM-30T2R/alternatives.json"},"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":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}