RB451UMFHTL Equivalent & Substitute Parts Reference Guide

Part Overview

The RB451UMFHTL, manufactured by Rohm Semiconductor, is an automotive-grade Schottky diode rated at 40V and 100mA, supplied in a UMD3F surface-mount package. The device is classified under Diodes, Rectifiers and is compliant with ROHS3 and AEC-Q101 qualifications. Currently, the product status is "Not For New Designs," highlighting the necessity of identifying suitable substitute models for ongoing and new applications requiring continued supply and design assurance.

Substiute Parts

RB451UMFHTL

Rohm SemiconductorIn Stock: 890RB451UMFHTL Datasheet

Current PartRFQ

RB451UMTL

Rohm SemiconductorIn Stock: 952RB451UMTL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for RB451UMFHTL is determined strictly by matching the defining electrical and mechanical parameters:

• Product Category: Diodes, Rectifiers
• Technology: Schottky
• Maximum Reverse Voltage: 40 V
• Average Rectified Current: 100mA
• Maximum Forward Voltage at If: 450 mV @ 100 mA
• Maximum Reverse Leakage Current: 90 µA @ 40 V
• Capacitance: 6pF @ 10V, 1MHz
• Mounting Type: Surface Mount
• Package / Case: SC-85
• Supplier Device Package: UMD3F
• Operating Temperature - Junction: 125°C (Max)
• Qualification: AEC-Q101
• RoHS and REACH compliance

The substitute part RB451UMTL shares all specified parameters with the main part number, supporting direct equivalence for engineering use per supplied data.

Parameter Comparison

Engineering Selection Recommendations

RB451UMFHTL is designated "Not For New Designs," while the parametric equivalent RB451UMTL is "Active" and shares all compliance markers, including ROHS3, REACH status, and AEC-Q101 automotive qualification. Substitution is validated based on identical electrical, mechanical, and compliance parameters. Product status is the primary distinction; the substitute RB451UMTL is suitable for new design-in and continued supply chains where exact parameter matching is required.

Frequently Asked Questions (FAQ)

Q1: What parameters ensure compatibility between RB451UMFHTL and RB451UMTL?
Compatibility is determined by matching reverse voltage, rectified current, forward voltage, reverse leakage current, capacitance, qualification standards, mounting type, and package specifications.

Q2: Are there any mechanical differences between RB451UMFHTL and RB451UMTL?
Both parts utilize the same surface-mount SC-85 package with UMD3F supplier device package, ensuring mechanical interchangeability.

Q3: How does qualification affect substitution selection?
Both RB451UMFHTL and RB451UMTL are qualified to AEC-Q101 standards, meeting automotive-grade reliability targets for this diode category.

Q4: What compliance certifications should be checked before substituting?
ROHS3 and REACH status are identical for both parts, supporting equivalent environmental compliance.

Q5: Is the substitute RB451UMTL suitable for new designs?
RB451UMTL is listed as "Active" and shares all operational and compliance parameters with RB451UMFHTL, supporting use in new and existing applications within the stated parameter set.