{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SMCJ188CA-TR","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"SMCJ188CA-TR","canonicalUrl":"https://icboms.com/stmicroelectronics/SMCJ188CA-TR","factsUrl":"https://icboms.com/api/mcp/products/SMCJ188CA-TR","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics SMCJ188CA-TR, TRANSIL™ series, bidirectional TVS diode, 1500W peak pulse power, 188V reverse standoff, 388V clamping, DO-214AB SMC package, -55°C to 150°C junction temperature.","salesMarkdown":"## What this TVS does on the rail Its single bidirectional channel means it can protect AC lines or dual-polarity DC rails without polarity concerns. The 1500W peak pulse power rating (1.5kW) at the 10/1000µs waveform gives it the energy capacity to handle lightning-induced surges, inductive load dumps, and switching transients in industrial and telecom equipment. ## Clamping voltage and surge current — the protection envelope For a 188V rail, the 209V minimum breakdown voltage ensures the device stays off during normal operation and only conducts when the transient exceeds that threshold. The 26A peak current capability (8/20µs) is the figure to use when sizing the TVS against the expected surge current from the source impedance and transient energy. ## Package and thermal reality for the layout Housed in a DO-214AB (SMC) surface-mount package, this part shares the standard footprint used across the 1500W SMCJ family. The SMC package's large tab area must be soldered to an adequate copper pour on the PCB to dissipate the heat from repeated surge events — the 1500W rating assumes a low-thermal-resistance board connection.","metaTitle":"SMCJ188CA-TR STMicroelectronics TVS Diode","metaDescription":"SMCJ188CA-TR bidirectional TVS diode from STMicroelectronics, 1500W peak pulse power, 188V standoff, 388V clamping, DO-214AB SMC package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Protection"],"specifications":{"Mfr":"STMicroelectronics","Type":"Zener","Series":"SMCJ, TRANSIL™","Package":"Tape & Reel (TR); Cut Tape (CT)","Applications":"General Purpose","Mounting Type":"Surface Mount","Package / Case":"DO-214AB, SMC","Product Status":"Active","lifecycle_stage":"eol_hot","Power - Peak Pulse":"1500W (1.5kW)","Base Product Number":"SMCJ188","Operating Temperature":"-55°C~150°C(TJ)","Power Line Protection":"No","Bidirectional Channels":"1","Capacitance @ Frequency":"-","Supplier Device Package":"SMC","Voltage - Breakdown (Min)":"209V","Voltage - Clamping (Max) @ Ipp":"388V","Voltage - Reverse Standoff (Typ)":"188V","Current - Peak Pulse (10/1000µs)":"26A (8/20µs)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/afa32e66ad58d9d3b67a92acb79ea14b.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/SMCJ188CA-TR/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between SMCJ188CA-TR and SMCJ188A-TR?","answer":"The SMCJ188CA-TR is a bidirectional TVS (single bidirectional channel), while the SMCJ188A-TR is unidirectional. Both share the same 188V standoff voltage, 1500W peak pulse power, and DO-214AB package. The bidirectional version is suited for AC lines or dual-polarity rails where polarity is not fixed; the unidirectional version is for single-polarity DC rails where the cathode is tied to ground."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/SMCJ188CA-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/SMCJ188CA-TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}