{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1.5KE36CARL","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"1.5KE36CARL","canonicalUrl":"https://icboms.com/stmicroelectronics/1.5KE36CARL","factsUrl":"https://icboms.com/api/mcp/products/1.5KE36CARL","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics 1.5KE36CARL, TRANSIL™ series, Type Zener, Bidirectional, 1 channel, 1500W peak pulse power, 30.8V reverse standoff, 64.3V clamp, DO-201AA axial through-hole package.","salesMarkdown":"## 1500 W bidirectional Zener TVS — what it protects and how The STMicroelectronics 1.5KE36CARL is a 1500 W peak-pulse-power bidirectional Zener TVS diode from the TRANSIL™ family, designed to clamp voltage transients on a nominal 30.8 V rail. It is a single-channel device in a DO-201AA axial-lead through-hole package, intended for general-purpose surge protection on power supplies, industrial controls, and telecom equipment where a through-hole part is preferred for its mechanical robustness and ease of board-level rework. ## 30.8 V standoff, 64.3 V clamp — sizing the protection margin The 30.8 V reverse standoff voltage means this part sits across a 24 V or 28 V rail without conducting in normal operation, leaving headroom for steady-state tolerances. When a surge hits, the breakdown triggers at a minimum of 34.2 V and the clamp holds the peak at 64.3 V at the rated 156 A peak pulse current (8/20 µs waveform). That 64.3 V clamp is what the downstream circuitry must survive — if your DC-DC converter or load switch has a 60 V absolute maximum, this part leaves only a few volts of margin; a lower-clamp TVS would be a tighter fit. ## 1250 pF capacitance — signal-speed trade-off At 1250 pF measured at 1 MHz, this is a high-capacitance TVS — fine for DC power rails and low-frequency signals, but it will load down a high-speed data line (CAN, RS-485, Ethernet) and distort the waveform. For signal-line protection at higher bit rates, a lower-capacitance TVS family (e.g., the STMicroelectronics SM series) is the better choice. For new designs, a current-production bidirectional 1500 W TVS with a 30.8 V standoff in a DO-201 package — such as the 1.5KE36CA from the same TRANSIL family — should be evaluated as a functional replacement, though pin compatibility and electrical characteristics must be verified against the specific application.","metaTitle":"STMicroelectronics 1.5KE36CARL TRANSIL TVS, 1500W","metaDescription":"1.5KE36CARL is a 1500W bidirectional Zener TVS diode from STMicroelectronics. 30.8V reverse standoff, 64.3V clamp, DO-201 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"1.5KE, TRANSIL™","Package":"Tape & Reel (TR)","Applications":"General Purpose","Mounting Type":"Through Hole","Package / Case":"DO-201AA, DO-27, Axial","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"1.5KE","Operating Temperature":"-","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"1250pF @ 1MHz","Supplier Device Package":"DO-201","Voltage - Breakdown (Min)":"34.2V","Voltage - Clamping (Max) @ Ipp":"64.3V","Voltage - Reverse Standoff (Typ)":"30.8V","Current - Peak Pulse (10/1000µs)":"156A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.2878","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/089e26c8bbf5e28593f663899fc6cea1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1.5KE36CARL/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for 1.5KE36CARL?","answer":"There is no official successor listed for the 1.5KE36CARL. A functional cross-shop candidate is the 1.5KE36CA, also a bidirectional 1500 W TRANSIL TVS with a 30.8 V standoff in the same DO-201 package. Verify the clamping voltage and capacitance match your circuit requirements before substituting."},{"question":"What is the capacitance of 1.5KE36CARL?","answer":"The capacitance is 1250 pF, measured at 1 MHz. This is a relatively high value that makes the part unsuitable for protecting high-speed data lines, but it is fine for DC power rails and low-frequency signal protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/1.5KE36CARL","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/1.5KE36CARL when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T14:29:02.826Z","lastPublished":"2026-07-16T14:29:02.826Z","indexable":true}}