Equivalent & Substitute Parts for DB3S314F0L

Part Overview

The DB3S314F0L is a Schottky diode array manufactured by Panasonic Electronic Components, configured as a 1 pair series connection with a maximum reverse voltage rating of 30 V and average rectified current of 30 mA per diode. The device is housed in a surface mount SC-89 (SOT-490) package and is classified as a small signal rectifier with a reverse recovery time of 1 ns.

This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications. Substitute parts must maintain compatibility with the SC-89 package footprint and support the electrical requirements of circuits originally designed for the DB3S314F0L.

Substiute Parts

DB3S314F0L

Panasonic Electronic ComponentsIn Stock: 5465DB3S314F0L Datasheet

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RB548WMFHTL

Rohm SemiconductorIn Stock: 8532RB548WMFHTL Datasheet

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RB548WMTL

Rohm SemiconductorIn Stock: 6851RB548WMTL Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the DB3S314F0L is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Diode configuration: 1 pair series connection
• Technology: Schottky
• Voltage rating: 30 V DC reverse (Vr) maximum
• Package: SC-89, SOT-490 surface mount
• Mounting type: Surface mount

Allowable Parameter Variations: Substitute parts may exceed the original specifications in the following parameters without compromising circuit compatibility:

• Current - Average Rectified (Io): Substitutes rated at 100 mA are acceptable for applications requiring 30 mA operation
• Voltage - Forward (Vf): Substitutes with lower forward voltage drop are acceptable
• Operating Temperature - Junction: Substitutes with higher maximum junction temperature are acceptable
• Current - Reverse Leakage: Substitutes with higher reverse leakage are acceptable within normal operating conditions

The Rohm Semiconductor RB548WMTL and RB548WMFHTL meet all critical matching parameters and are electrically compatible with the DB3S314F0L for direct substitution in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

RB548WMTL (Rohm Semiconductor) - Recommended Primary Substitute

The RB548WMTL is the preferred substitute for the discontinued DB3S314F0L. This part maintains identical electrical specifications for all critical parameters and is classified as an active product with current manufacturing status. The RB548WMTL is supplied in Tape & Reel (TR) packaging format with 6,772 pieces in stock inventory. ROHS3 compliance and REACH unaffected status confirm regulatory alignment with modern manufacturing standards. The higher current rating (100 mA versus 30 mA) and elevated maximum junction temperature (150°C versus 125°C) provide additional design margin without introducing compatibility issues.

RB548WMFHTL (Rohm Semiconductor) - Secondary Substitute

The RB548WMFHTL is functionally equivalent to the RB548WMTL and provides an alternative sourcing option. This part is classified as "Not For New Designs" and is supplied in Cut Tape (CT) & Digi-Reel® packaging format with 8,457 pieces in stock inventory. The RB548WMFHTL carries AEC-Q101 automotive qualification and ROHS3 compliance. Selection of this part is appropriate for replacement and maintenance applications where existing inventory or supply chain considerations apply.

Both Rohm substitutes are electrically and mechanically compatible with the DB3S314F0L and support direct board-level replacement without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the RB548WMTL be used as a direct replacement for the DB3S314F0L?

A: Yes. The RB548WMTL maintains identical package geometry (SC-89, SOT-490), diode configuration (1 pair series connection), reverse voltage rating (30 V), and Schottky technology. The higher current rating (100 mA) and maximum junction temperature (150°C) are compatible with applications designed for the 30 mA DB3S314F0L.

Q: What is the difference between the RB548WMTL and RB548WMFHTL?

A: Both parts are electrically identical with matching voltage ratings, current capabilities, and package specifications. The primary differences are product status (RB548WMTL is active; RB548WMFHTL is not for new designs) and packaging format (RB548WMTL supplied in Tape & Reel; RB548WMFHTL supplied in Cut Tape & Digi-Reel). The RB548WMFHTL includes AEC-Q101 automotive qualification.

Q: Are there any thermal considerations when substituting the DB3S314F0L with Rohm alternatives?

A: The Rohm substitutes have a maximum junction temperature of 150°C compared to 125°C for the DB3S314F0L. This represents an improvement in thermal capability and does not introduce compatibility constraints. Circuit thermal design remains unchanged.

Q: Do the substitute parts require any PCB layout modifications?

A: No. Both RB548WMTL and RB548WMFHTL use the identical SC-89 (SOT-490) package footprint as the DB3S314F0L. Direct board-level substitution is supported without PCB redesign.

Q: What is the forward voltage difference between the DB3S314F0L and substitute parts?

A: The DB3S314F0L specifies 1 V maximum forward voltage at 30 mA. The Rohm substitutes specify 450 mV maximum forward voltage at 10 mA. The lower forward voltage of the substitutes results in reduced power dissipation and improved circuit efficiency.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both RB548WMTL and RB548WMFHTL are ROHS3 compliant. The original DB3S314F0L is RoHS compliant. All parts meet current environmental and regulatory requirements.

Q: Which substitute should be selected for new product designs?

A: The RB548WMTL is the appropriate selection for new designs. This part is classified as active and carries current manufacturing status, ensuring long-term availability and supply chain stability.