{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"HZ12BP-E","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"HZ12BP-E","canonicalUrl":"https://icboms.com/renesas/HZ12BP-E","factsUrl":"https://icboms.com/api/mcp/products/HZ12BP-E","rawCanonicalId":null},"summary":{"shortDescription":"HZ-P series Zener diode, 12 V nominal, 1 W power dissipation, ±5% tolerance, DO-204AL (DO-41) axial through-hole package, bulk.","salesMarkdown":"## 12 V Zener, 1 W — what the ratings mean for the BOM The HZ12BP-E is a 12 V Zener diode from the HZ-P series, rated for 1 W continuous power dissipation in a DO-41 axial-lead package. The 12 V nominal voltage with ±5% tolerance covers the typical regulation window for 12 V rails and clamp circuits. The 8 Ohms maximum Zzt impedance means the diode holds regulation reasonably tight under moderate current changes — expect a few tens of millivolts of shift across the operating current range. Reverse leakage is specified at 10 µA maximum at 9 V reverse bias, which is low enough for most bias and protection uses but worth checking if the circuit holds the diode near its reverse breakdown threshold continuously. ## Package and mounting — DO-41 axial, through-hole The DO-41 axial package is the standard for 1 W Zener diodes. The through-hole mounting suits point-to-point wiring, terminal strips, or PCB. ## Lifecycle — active, no phase-out signal The HZ12BP-E carries an active product status.","metaTitle":"HZ12BP-E Zener Diode, 12V, 1W, DO-41, ±5% Tolerance","metaDescription":"HZ12BP-E 12V Zener diode, 1W power rating, ±5% tolerance, DO-41 through-hole. Request quote.","metaKeywords":null},"attributes":{"series":"HZ-P","packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":[],"specifications":{"Series":"HZ-P","Package":"Bulk","Tolerance":"±5%","Power - Max":"1 W","Mounting Type":"Through Hole","Package / Case":"DO-204AL, DO-41, Axial","lifecycle_stage":"eol_hot","Impedance (Max) (Zzt)":"8 Ohms","Operating Temperature":"175°C (TJ)","Supplier Device Package":"DO-41","Voltage - Zener (Nom) (Vz)":"12 V","Current - Reverse Leakage @ Vr":"10 µA @ 9 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.36","stockQuantity":0,"priceTiers":[{"qty":838,"price":"$0.36000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/13be8b7fc7b27fef153b38660136994d.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the equivalent part for HZ12BP-E?","answer":"A common cross-shop candidate is the 1N4742A, which is also a 12 V, 1 W Zener in a DO-41 package with ±5% tolerance. The 1N4742A is a JEDEC-registered device and is widely second-sourced. Verify the specific impedance and leakage characteristics against your circuit's requirements before substituting."},{"question":"How do I test HZ12BP-E with a multimeter?","answer":"Use the diode test range: forward bias should read roughly 0.6–0.8 V; reverse bias should show open circuit (OL) at low test voltage. For a functional Zener voltage check, apply a current-limited supply (e.g., 10–20 mA through a resistor) and measure the voltage across the diode — it should read 12 V ±5%."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/HZ12BP-E","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/HZ12BP-E when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}