RB450UMTL – Equivalent & Substitute Parts Reference

Part Overview

The RB450UMTL is a Schottky diode from Rohm Semiconductor, categorized under Diodes, Rectifiers. It features a 40V maximum DC reverse voltage, 100mA average rectified current, and a surface mount UMD3F package. The device is discontinued at Digi-Key, necessitating the identification of substitute parts to maintain design continuity or support repairs. Alternatives must conform to the strict electrical and mechanical parameters outlined for this product category.

Substiute Parts

RB450UMTL

Rohm SemiconductorIn Stock: 3420RB450UMTL Datasheet

Current PartRFQ

RB450UMFHTL

Rohm SemiconductorIn Stock: 3791RB450UMFHTL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution is permitted when parts match all defined electrical and mechanical parameters, notably: Schottky technology, 40V maximum reverse voltage, 100mA average rectified current, 550mV maximum forward voltage at 100mA, 10µA reverse leakage at 40V, 6pF junction capacitance (10V, 1MHz), surface mount capability, SC-85 case, UMD3F footprint, and a maximum operating junction temperature of 150°C. Additional criteria include matching RoHS and REACH status, as well as MSL rating. Automotive qualification and product status can distinguish applicability but do not affect base substitutability.

Parameter Comparison

Engineering Selection Recommendations

RB450UMTL is discontinued at Digi-Key; RB450UMFHTL is listed as Not For New Designs. Both parts are ROHS3 compliant, REACH unaffected, and share an MSL of 1. RB450UMFHTL includes automotive grade and AEC-Q101 qualification. Selection should be based on inventory availability and required certifications for the application. Both can substitute for each other within the limits of their electrical and mechanical parameters.

Frequently Asked Questions (FAQ)

Q1: What are the electrical substitution criteria for RB450UMTL?
A1: Substitutes must match Schottky technology, 40V DC reverse voltage (max), 100mA average rectified current, 550mV forward voltage (max) at 100mA, 10µA reverse leakage at 40V, and 6pF capacitance at 10V, 1MHz.

Q2: What mechanical parameters must be met by substitute parts?
A2: Direct replacements require surface mount capability, SC-85 package, and UMD3F supplier device package.

Q3: Are there environmental compliance requirements?
A3: Substitutes must be ROHS3 compliant, MSL 1 (Unlimited), and REACH unaffected.

Q4: Does the product status affect substitution?
A4: Discontinued or Not For New Designs statuses necessitate checking inventory and future supply risk; otherwise, matching parameters ensure substitutability.

Q5: Can automotive qualified substitutes be used in standard applications?
A5: Automotive grade and AEC-Q101 qualification do not restrict use in standard applications if all other parameters align.

Q6: How does the operating temperature specification influence selection?
A6: The maximum junction temperature remains at 150°C for both models; substitutes must adhere to this thermal rating.

Q7: Why is matching the package footprint critical for replacement?
A7: Compatibility with SC-85 and UMD3F ensures correct mounting and electrical connection in existing designs.