{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"HZK5ATR-S-E","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"HZK5ATR-S-E","canonicalUrl":"https://icboms.com/renesas/HZK5ATR-S-E","factsUrl":"https://icboms.com/api/mcp/products/HZK5ATR-S-E","rawCanonicalId":null},"summary":{"shortDescription":"Zener diode, 4.5 V nominal, 500 mW, DO-213AC MINI-MELF SOD-80 surface mount, ±4.44% tolerance, 100 Ohms max impedance, 175°C junction temperature.","salesMarkdown":"## 4.5 V rail clamp in a MINI-MELF body The HZK5ATR-S-E is a 4.5 V zener diode rated for 500 mW maximum power dissipation, housed in a DO-213AC MINI-MELF SOD-80 surface-mount package. It is intended for voltage regulation, clamping, or reference applications on a PCB where a 4.5 V nominal zener voltage is needed and the board is reflow-soldered — no through-hole, no hand-wiring. The ±4.44% tolerance on the zener voltage means the actual Vz sits between roughly 4.3 V and 4.7 V, tight enough for a basic shunt regulator or a low-side clamp but not for a precision reference. The 500 mW power rating is the total dissipation at the junction; in a MINI-MELF body the thermal path runs through the solder pads to the board copper. For a 4.5 V zener, 500 mW translates to about 111 mA maximum zener current — but only if the board can pull the heat away. The 100 Ohms maximum zener impedance (Zzt) at the test current means the regulation slope is moderate — the output voltage shifts about 100 mV per mA of load change near the knee. That is fine for a clamp or a simple bias rail; for a sharper knee you would look at a lower-impedance zener or a reference IC. ## Active production — no LTB worry No end-of-life notice or last-time-buy date is on file.","metaTitle":"HZK5ATR-S-E Zener Diode, 4.5 V, 500 mW, DO-213AC","metaDescription":"HZK5ATR-S-E Zener diode, 4.5 V nominal, 500 mW, DO-213AC MINI-MELF SOD-80 surface mount. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","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)":"100 Ohms","Operating Temperature":"175°C (TJ)","Supplier Device Package":"LLD","Voltage - Zener (Nom) (Vz)":"4.5 V","Current - Reverse Leakage @ Vr":"5 µA @ 1.5 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.17","priceTiers":[{"qty":1758,"price":"$0.17000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/HZK5ATR-S-E/alternatives.json"},"ai":{"faq":[{"question":"What is the tolerance on the zener voltage?","answer":"The tolerance is ±4.44% on the nominal 4.5 V zener voltage, so the actual Vz falls between approximately 4.3 V and 4.7 V."},{"question":"Can I buy HZK5ATR-S-E in bulk?","answer":"The listed package form is Bulk, meaning the parts are supplied loose rather than on tape and reel. For a production line that feeds a pick-and-place, confirm the packaging format with your distributor; bulk may require manual handling or a tube adapter."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/HZK5ATR-S-E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/HZK5ATR-S-E when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}