{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FERD20H100SB-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"FERD20H100SB-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/FERD20H100SB-TR","factsUrl":"https://icboms.com/api/mcp/products/FERD20H100SB-TR","rawCanonicalId":null},"summary":{"shortDescription":"ST FERD20H100SB-TR, Field Effect Rectifier Diode (FERD), 100 V reverse, 20 A average, 705 mV Vf at 20 A, Fast Recovery ≤ 500 ns, DPAK (TO-252) surface mount, 175 °C junction temperature.","salesMarkdown":"## 100 V / 20 A FERD in a DPAK — output rectifier for 48 V and 12 V rails The ST FERD20H100SB-TR is a 100 V, 20 A Field Effect Rectifier Diode (FERD) in a DPAK (TO-252) surface-mount package. FERD technology merges PiN and Schottky characteristics to deliver a forward voltage of 705 mV at the full 20 A rating, which directly reduces conduction loss in high-current output stages. The 100 V reverse voltage provides headroom for 48 V bus converters (telecom, industrial) and 12 V OR-ing diodes in redundant power supplies. The 20 A average current rating suits single-output rectification in the 200–300 W range. ## Forward voltage and switching speed — conduction vs recovery trade-off At 20 A the maximum forward voltage is 705 mV — a low Vf for a 100 V / 20 A rectifier, which keeps junction temperature rise in check when the diode carries continuous current. The fast recovery speed (≤ 500 ns, > 200 mA) means the reverse recovery charge is low enough for hard-switched converters running at 50–100 kHz without excessive ringing. Reverse leakage is specified at 140 µA at 100 V. In a typical 48 V application the actual Vr is ~48 V, so leakage will be lower than the 100 V spec — the FERD structure trades slightly higher leakage than a pure Schottky for a softer recovery characteristic. ## 175 °C junction rating — thermal margin for compact designs The maximum junction temperature is 175 °C, which is the standard for ST's power rectifier family. In a DPAK package the thermal path runs through the exposed tab to the PCB copper; a 1 oz copper pad of at least 600 mm² keeps the junction below 150 °C at 20 A with minimal airflow.","metaTitle":"ST FERD20H100SB-TR FERD Diode, 100V 20A DPAK, 705mV Vf","metaDescription":"ST FERD20H100SB-TR Field Effect Rectifier Diode, 100V reverse, 20A average, 705mV forward voltage at 20A. DPAK surface mount. Active production, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":[],"specifications":{"Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Package":"Tape & Reel (TR); Cut Tape (CT)","Diode Type":"FERD (Field Effect Rectifier Diode)","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","lifecycle_stage":"eol_hot","Supplier Device Package":"DPAK","Current - Reverse Leakage @ Vr":"140 µA @ 100 V","Voltage - DC Reverse (Vr) (Max)":"100 V","Current - Average Rectified (Io)":"20A","Operating Temperature - Junction":"175°C (Max)","Voltage - Forward (Vf) (Max) @ If":"705 mV @ 20 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.01","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.01000","currency":"USD"},{"qty":10,"price":"$0.90100","currency":"USD"},{"qty":100,"price":"$0.70260","currency":"USD"},{"qty":500,"price":"$0.58042","currency":"USD"},{"qty":1000,"price":"$0.49962","currency":"USD"},{"qty":2500,"price":"$0.49962","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/70e6bac658fb1edb731251ad7aa69e2c.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is a FERD diode and how does it differ from a standard Schottky?","answer":"FERD stands for Field Effect Rectifier Diode, ST's implementation of a merged PiN-Schottky structure. Compared to a standard Schottky at the same voltage and current rating, a FERD typically offers a lower forward voltage at high current (705 mV at 20 A) and a softer reverse recovery characteristic, at the expense of slightly higher reverse leakage at elevated temperatures."},{"question":"What is the closest pin-compatible alternative to FERD20H100SB-TR?","answer":"The STPS20H100 is a common Schottky rectifier in the same DPAK package with the same 100 V / 20 A rating. The FERD20H100SB-TR has a lower forward voltage (705 mV vs approximately 800 mV for the STPS20H100 at 20 A) and a different reverse recovery profile. Pin-compatible for PCB layout, but the thermal and switching performance differ — verify the trade-off in your specific converter topology before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/FERD20H100SB-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/FERD20H100SB-TR 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}}