{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ICE2QR0665XKLA1","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"ICE2QR0665XKLA1","canonicalUrl":"https://icboms.com/infineon/ICE2QR0665XKLA1","factsUrl":"https://icboms.com/api/mcp/products/ICE2QR0665XKLA1","rawCanonicalId":null},"summary":{"shortDescription":"Infineon CoolMOS™, CoolSET™-Q1 ICE2QR0665XKLA1 offline flyback switch, 88 W, 650 V breakdown, 52 kHz, 50% duty cycle, PG-DIP-8, through hole, -40°C to 150°C.","salesMarkdown":"## 88 W flyback with 650 V CoolMOS — the power supply workhorse The Infineon ICE2QR0665XKLA1 is an offline flyback switching controller with an integrated 650 V CoolMOS power MOSFET, part of the CoolSET™-Q1 family. It delivers up to 88 W in a flyback topology, switching at 52 kHz with a 50% maximum duty cycle. The internal switch handles the power stage, so the external BOM stays lean — just the transformer, optocoupler feedback, and a handful of passives. Fault protection covers current limiting, overload, overtemperature, and overvoltage, which simplifies compliance testing for isolated supplies. ## 52 kHz switching — transformer sizing and EMI At 52 kHz the switching frequency sits in the sweet spot for ferrite core transformers in the 50–100 W range — small enough to keep the magnetics compact, low enough to avoid the EMI headaches of 100 kHz+ designs. The 50% duty cycle limit sets the maximum on-time for a given input voltage, so the transformer turns ratio needs to be calculated for the lowest bulk capacitor voltage at full load. The 650 V breakdown gives 200 V+ of derating headroom above a 400 V DC bus, which covers line surge and leakage inductance spikes without an external snubber eating efficiency. ## PG-DIP-8 through hole — rework and storage The PG-DIP-8 package (0.300\" body, 7.62 mm pitch) is through-hole only, which means hand-solder friendly for prototypes and rework, but no wave-solder paste-in-hole process without a manual step. No moisture sensitivity level to track — DIP packages are generally MSL 1, so no bake required even if the tube has been open for months. Store the tubes in a dry cabinet below 30°C to keep the leads oxidation-free; the ROHS3 compliance means the solder finish is matte tin or NiPdAu, not SnPb.","metaTitle":"Infineon ICE2QR0665XKLA1 CoolSET Flyback, 88 W, 650 V","metaDescription":"Infineon ICE2QR0665XKLA1 offline flyback switch in PG-DIP-8, 88 W output, 650 V breakdown, 52 kHz switching. Active lifecycle, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":"CoolMOS™, CoolSET™-Q1","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Series":"CoolMOS™, CoolSET™-Q1","Package":"Tube","Topology":"Flyback","Duty Cycle":"50%","Mounting Type":"Through Hole","Power (Watts)":"88 W","Package / Case":"8-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Fault Protection":"Current Limiting, Over Load, Over Temperature, Over Voltage","Output Isolation":"Isolated","Internal Switch(s)":"Yes","Voltage - Start Up":"18 V","Voltage - Breakdown":"650V","Frequency - Switching":"52kHz","Operating Temperature":"-40°C ~ 150°C (TJ)","Supplier Device Package":"PG-DIP-8","Voltage - Supply (Vcc/Vdd)":"10.5V ~ 27V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.41","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.41000","currency":"USD"},{"qty":10,"price":"$3.06000","currency":"USD"},{"qty":25,"price":"$2.89320","currency":"USD"},{"qty":100,"price":"$2.50740","currency":"USD"},{"qty":250,"price":"$2.37880","currency":"USD"},{"qty":500,"price":"$2.13448","currency":"USD"},{"qty":1000,"price":"$1.80016","currency":"USD"},{"qty":2500,"price":"$1.71016","currency":"USD"},{"qty":5000,"price":"$1.64586","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/b5cf1d63da5a25502290559575d5437d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum output power of ICE2QR0665XKLA1?","answer":"The ICE2QR0665XKLA1 is rated for 88 W output power in a flyback topology. That figure assumes adequate heatsinking and airflow; in a sealed enclosure or at high ambient temperature you will need to derate based on the junction temperature limit of 150°C."},{"question":"Is ICE2QR0665XKLA1 RoHS compliant?","answer":"Yes, the ICE2QR0665XKLA1 is ROHS3 compliant per the Infineon declaration. The PG-DIP-8 package uses a lead-free finish, so it passes the RoHS exemption list for electronic components."},{"question":"What is the switching frequency of ICE2QR0665XKLA1?","answer":"The switching frequency is 52 kHz. This is a fixed-frequency design — no frequency foldback or spread-spectrum modulation is built in, so the EMI filter needs to be tuned for the fundamental and its harmonics."},{"question":"What are the equivalent parts to ICE2QR0665XKLA1?","answer":"Within the same CoolSET™-Q1 family, the ICE2QR1080GXUMA1 (77 W, 800 V, surface-mount PG-DSO-12) and ICE2QR2280G1XUMA1 (53 W, 800 V, surface-mount) are functional peers but differ in power level, breakdown voltage, and package — they are not pin-compatible with the through-hole PG-DIP-8. The ICE3BR0665JXKLA1 (74 W, 650 V, 65 kHz, 75% duty cycle, through-hole PG-DIP-8) is a closer footprint match but uses a different controller generation with a higher switching frequency and wider duty cycle. Cross-check the transformer design before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/ICE2QR0665XKLA1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/ICE2QR0665XKLA1 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}}