Equivalent & Substitute Parts for VDZFHT2R5.1B

Part Overview

The Rohm Semiconductor VDZFHT2R5.1B is a Zener diode with a nominal Zener voltage of 5.09 V, rated at 100 mW maximum power dissipation and ±2.16% tolerance, housed in a VMD2 (SOD-723) surface mount package. The device is automotive grade, AEC-Q101 qualified, and compliant with relevant RoHS and REACH standards. The current product status is listed as Obsolete. Due to its discontinued status, sourcing alternative models is necessary for continued design, manufacturing, and repair activities.

Substiute Parts

VDZFHT2R5.1B

Rohm SemiconductorIn Stock: 951VDZFHT2R5.1B Datasheet

Current PartRFQ

EDZVFHT2R5.1B

Rohm SemiconductorIn Stock: 21428EDZVFHT2R5.1B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts are identified based on precise matching of the following key parameters: Zener voltage (Vz), tolerance, maximum power dissipation, impedance (Zzt), reverse leakage current, operating temperature, qualification (AEC-Q101), automotive grade, mounting type, RoHS and REACH status, moisture sensitivity level (MSL), and mechanical package compatibility as defined in the input.

Parameter Comparison

Engineering Selection Recommendations

The VDZFHT2R5.1B is obsolete, while the EDZVFHT2R5.1B is active and available. Both parts are automotive grade, AEC-Q101 qualified, and compliant with ROHS3 and REACH standards. The substitute maintains electrical parameters and retains the same compliance. Selection is supported on the basis of continued availability and equivalent regulatory, environmental, and automotive grade qualifications.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for selecting a substitute Zener diode for VDZFHT2R5.1B?
A1: Substitute selection is based on identical Zener voltage, tolerance, maximum power rating, impedance, reverse leakage current, operating temperature, qualification (AEC-Q101), automotive grade, RoHS and REACH status, surface mount mounting type, and moisture sensitivity.

Q2: Are package differences significant when substituting the VDZFHT2R5.1B?
A2: Both parts are surface-mount and automotive qualified, but differences in package/case (VMD2 (SOD-723) vs. EMD2 (SC-79, SOD-523)) must be considered in terms of board layout compatibility.

Q3: Does the EDZVFHT2R5.1B meet the same automotive qualifications and standards as VDZFHT2R5.1B?
A3: Yes, both are AEC-Q101 qualified and automotive grade with equivalent RoHS3 compliance and REACH status.

Q4: What mechanical and electrical parameters must remain unchanged to ensure proper substitution?
A4: Zener voltage, tolerance, maximum power, impedance, reverse leakage current, operating temperature, mounting type, package compatibility, qualification, and environmental compliance must match as specified.

Q5: Can EDZVFHT2R5.1B be directly used in existing designs for VDZFHT2R5.1B?
A5: Direct substitution depends strictly on package/case physical compatibility in the specific PCB layout; all electrical and qualification parameters as listed are matched.