UMZ18KFHTL Equivalent & Substitute Parts Reference

Part Overview

Manufacturer part number UMZ18KFHTL is a Zener diode array from Rohm Semiconductor, categorized under Diodes, Zener. It features two independent diodes with a nominal Zener voltage of 17.96 V, ±2.2% tolerance, 200 mW maximum power dissipation, and is qualified to AEC-Q101 for automotive grade. This part is available in the SC-82A (SOT-343) surface mount package, compliant with ROHS3 and REACH, and is currently active in inventory.

Alternative models may be required in scenarios involving supply chain constraints, specific packaging preferences, or application compatibility where critical electrical and mechanical parameters must be strictly controlled.

Substiute Parts

UMZ18KFHTL

Rohm SemiconductorIn Stock: 2124UMZ18KFHTL Datasheet

Current PartRFQ

EDZVFHT2R18B

Rohm SemiconductorIn Stock: 8665EDZVFHT2R18B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for Zener diodes in the automotive segment must match critical electrical parameters, compliance certifications, and mounting type. The explicitly listed substitution criteria are:

• Voltage - Zener (Nom) (Vz)
• Tolerance
• Power - Max
• Current - Reverse Leakage @ Vr
• Operating Temperature
• Grade (Automotive)
• Qualification (AEC-Q101)
• Mounting Type (Surface Mount)
• Package / Case and Supplier Device Package
• RoHS and REACH Status
• Moisture Sensitivity Level (MSL)
• Product Status

Each substitute must adhere strictly to these parameters to ensure functional and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both UMZ18KFHTL and EDZVFHT2R18B are active products with ROHS3 and REACH compliance. Both are automotive grade and AEC-Q101 qualified. Moisture Sensitivity Level (MSL) is 1 (Unlimited) and ECCN, HTSUS codes match. Base selection strictly on the required electrical parameters, mounting style, package outline, and explicit product compliance.

Frequently Asked Questions (FAQ)

Q: What are the main substitution criteria for UMZ18KFHTL in the Diodes, Zener category?
A: Substitution criteria are voltage (Vz), tolerance, power rating, reverse leakage, operating temperature, automotive grade, AEC-Q101 qualification, mounting type, package/case, compliance (RoHS/REACH), product status, and MSL.

Q: Is the EDZVFHT2R18B package and mounting type compatible with UMZ18KFHTL?
A: Both parts are surface mount. UMZ18KFHTL uses SC-82A, SOT-343 (UMD4); EDZVFHT2R18B uses SC-79, SOD-523 (EMD2). Package outlines differ and should match the application footprint.

Q: Do both parts maintain automotive grade and AEC-Q101 qualification?
A: Yes, both UMZ18KFHTL and EDZVFHT2R18B are automotive grade and AEC-Q101 qualified.

Q: Are there differences in electrical performance parameters between UMZ18KFHTL and EDZVFHT2R18B?
A: Nominal Zener voltage, tolerance, and maximum power rating differ: 17.96 V, ±2.2%, 200 mW (UMZ18KFHTL) versus 18 V, ±2.19%, 150 mW (EDZVFHT2R18B). Reverse leakage current and operating temperature are equivalent.

Q: Should RoHS or REACH compliance be considered in substitution?
A: Both parts are ROHS3 compliant and REACH unaffected, fulfilling standard regulatory requirements for substitution.