RB557WMFHTL Equivalent & Substitute Parts

Part Overview

The RB557WMFHTL is a Schottky diode array manufactured by Rohm Semiconductor, configured as a 1 Pair Common Anode arrangement rated for 30 V DC reverse voltage and 100 mA average rectified current per diode. The device is housed in a Surface Mount SC-89 (SOT-490) package and supplied in Tape & Reel (TR) packaging format.

This part carries a "Not For New Designs" status, indicating it has been superseded in Rohm's product portfolio. Identification of equivalent substitute parts is necessary for applications currently utilizing this component, particularly for ongoing production support, maintenance, and legacy system requirements.

Substiute Parts

RB557WMFHTL

Rohm SemiconductorIn Stock: 1266RB557WMFHTL Datasheet

Current PartRFQ

RB557WMTL

Rohm SemiconductorIn Stock: 3853RB557WMTL Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RB557WMFHTL is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Parameters (Critical for Functional Compatibility):

• Diode configuration: 1 Pair Common Anode
• Technology: Schottky
• Maximum reverse voltage: 30 V
• Average rectified current per diode: 100 mA
• Forward voltage: 490 mV @ 100 mA
• Reverse leakage current: 10 µA @ 10 V
• Maximum junction temperature: 125°C

Mechanical Parameters (Critical for Physical Compatibility):

• Package type: SC-89, SOT-490
• Mounting type: Surface Mount
• Supplier device package: EMD3F

Compliance Parameters:

• RoHS3 compliance
• Automotive grade qualification (AEC-Q101)
• Moisture sensitivity level: 1 (Unlimited)

Substitute parts must match all parameters listed above. Packaging format (Tape & Reel versus Cut Tape) does not affect electrical or mechanical compatibility and does not preclude substitution.

Parameter Comparison

Engineering Selection Recommendations

The RB557WMTL is a direct parametric equivalent to the RB557WMFHTL. All electrical characteristics, mechanical dimensions, package specifications, and compliance certifications are identical between the two parts.

The primary distinction is product status: the RB557WMFHTL carries a "Not For New Designs" designation, while the RB557WMTL is classified as Active. This status difference reflects Rohm Semiconductor's product lifecycle management and indicates that the RB557WMTL represents the current production offering for this diode array configuration.

Both parts maintain identical automotive-grade qualification (AEC-Q101) and ROHS3 compliance, ensuring suitability for applications requiring these certifications.

The packaging format difference (Tape & Reel for the main part versus Cut Tape & Digi-Reel® for the substitute) does not affect electrical performance or mechanical compatibility. This distinction pertains only to supply and handling logistics.

Frequently Asked Questions (FAQ)

Q: Can the RB557WMTL be used as a direct replacement for the RB557WMFHTL?

A: Yes. The RB557WMTL is a parametric equivalent with identical electrical specifications, mechanical dimensions, package type (SC-89, SOT-490), and compliance certifications. Direct substitution is supported at the component level.

Q: What is the significance of the "Not For New Designs" status on the RB557WMFHTL?

A: This status indicates that Rohm Semiconductor has transitioned this part to end-of-life in their product portfolio. The RB557WMTL represents the active replacement offering. For new circuit designs, the RB557WMTL should be specified.

Q: Are there differences in packaging that affect PCB assembly?

A: The RB557WMFHTL is supplied in Tape & Reel (TR) format, while the RB557WMTL is available in Cut Tape (CT) and Digi-Reel® formats. These are supply format variations only and do not affect the component's electrical performance, pin configuration, or PCB footprint. Assembly equipment compatibility depends on the specific format selected during procurement.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the RB557WMFHTL and RB557WMTL carry automotive-grade designation with AEC-Q101 qualification, confirming suitability for automotive applications.

Q: Is the forward voltage specification identical between the two parts?

A: Yes. Both parts specify a maximum forward voltage of 490 mV at 100 mA forward current, ensuring identical circuit behavior in applications where forward voltage drop is a design parameter.

Q: What is the reverse voltage rating for both parts?

A: Both parts are rated for a maximum DC reverse voltage of 30 V. Circuit designs must not exceed this voltage specification.

Q: Are the moisture sensitivity levels the same?

A: Yes. Both parts carry Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life under standard storage conditions without special moisture control requirements.