{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"HZK9ATR","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"HZK9ATR","canonicalUrl":"https://icboms.com/renesas/HZK9ATR","factsUrl":"https://icboms.com/api/mcp/products/HZK9ATR","rawCanonicalId":null},"summary":{"shortDescription":"HZK9ATR Zener Diode, 9 V nominal, 500 mW, DO-213AC / MINI-MELF / SOD-80 surface-mount package, ±4.44% tolerance, 20 Ohms max impedance, 175°C junction temperature, RoHS non-compliant.","salesMarkdown":"## 9 V rail clamp or reference — the specs that decide fit The HZK9ATR is a 9 V nominal zener diode in a DO-213AC surface-mount package, rated for 500 mW continuous power dissipation. Its ±4.44% tolerance (roughly ±0.4 V around 9 V) makes it a fit for general-purpose voltage clamping or as a low-cost shunt reference where precision better than ±1 % is not required. ## Thermal headroom — 175°C junction buys margin The junction is rated for 175°C (TJ), 25°C above the common 150°C ceiling for standard zener diodes. In a 500 mW part with a small glass body (MINI-MELF), that extra headroom matters when the ambient is high or the current is near the limit — the die stays inside its safe operating area longer before derating kicks in. ## Package and assembly — DO-213AC / MINI-MELF / SOD-80 The package is listed as Bulk (loose part delivery), with a case style of DO-213AC, MINI-MELF, or SOD-80 — a glass-passivated, cylindrical surface-mount body with tin-plated end caps. It is compatible with standard pick-and-place equipment and reflow soldering profiles for small-signal discretes. ## Lifecycle and compliance Note the RoHS non-compliant designation: the tin-lead end-cap finish is acceptable for legacy BOMs or exempt applications, but verify your assembly house's material declaration requirements before committing.","metaTitle":"HZK9ATR Zener Diode 9 V 500 mW","metaDescription":"HZK9ATR 9 V zener diode, 500 mW power dissipation, DO-213AC surface-mount package. 175°C junction temperature rating. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":[],"specifications":{"Package":"Bulk","Tolerance":"±4.44%","Power - Max":"500 mW","Mounting Type":"Surface Mount","Package / Case":"DO-213AC, MINI-MELF, SOD-80","lifecycle_stage":"eol_hot","Impedance (Max) (Zzt)":"20 Ohms","Operating Temperature":"175°C (TJ)","Supplier Device Package":"LLD","Voltage - Zener (Nom) (Vz)":"9 V","Current - Reverse Leakage @ Vr":"1 µA @ 5 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.15","stockQuantity":0,"priceTiers":[{"qty":1954,"price":"$0.15000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/f7c13f73aa7832c1db51159b6780bd29.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can I use HZK9ATR in a high-temperature environment?","answer":"Yes. The junction temperature rating of 175°C (TJ) allows operation in elevated ambient conditions — engine bay, industrial oven control, or high-density PCB hot spots — where a standard 150°C zener would need derating."},{"question":"Is HZK9ATR equivalent to BZX84C9V1?","answer":"Both are 9 V nominal zener diodes, but the BZX84C9V1 typically comes in an SOT-23 package with a lower power rating (350 mW vs 500 mW) and a 150°C junction limit. The HZK9ATR's MINI-MELF body offers higher power in a smaller footprint, but the packages are not pin-compatible — the BZX84C9V1 has three leads, while the HZK9ATR is a two-terminal end-cap device."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/HZK9ATR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/HZK9ATR 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}}