Equivalent & Substitute Parts: DB3X314F0L

Part Overview

The DB3X314F0L 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 TO-236-3 (SC-59, SOT-23-3) surface mount package and is RoHS compliant with unlimited moisture sensitivity level (MSL 1).

This part is discontinued at DiGi Electronics, necessitating identification of equivalent substitute components that maintain functional compatibility within the specified electrical and mechanical parameters. Substitute parts must satisfy the same diode configuration, mounting type, and package specifications while accommodating allowable variations in voltage and current ratings.

Substiute Parts

DB3X314F0L

Panasonic Electronic ComponentsIn Stock: 3280DB3X314F0L Datasheet

Current PartRFQ

RB706D-40FHT146

Rohm SemiconductorIn Stock: 2394RB706D-40FHT146 Datasheet

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RB706D-40T146

Rohm SemiconductorIn Stock: 24529RB706D-40T146 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the DB3X314F0L is determined by strict adherence to the following electrical and mechanical parameters:

Mandatory Compatibility Criteria:

• Diode Configuration: 1 Pair Series Connection (required match)
• Technology: Schottky (required match)
• Mounting Type: Surface Mount (required match)
• Package / Case: TO-236-3, SC-59, SOT-23-3 (required match)
• Operating Temperature - Junction (Max): 125°C (required match)

Allowable Parameter Variations:

• Voltage - DC Reverse (Vr) (Max): Substitute must equal or exceed 30 V
• Current - Average Rectified (Io) (per Diode): Substitute must equal or exceed 30 mA
• Voltage - Forward (Vf) (Max) @ If: Substitute specifications may differ from original
• Current - Reverse Leakage @ Vr: Substitute specifications may differ from original

The substitute parts listed below satisfy all mandatory compatibility criteria and meet or exceed the allowable electrical parameter thresholds.

Parameter Comparison

Engineering Selection Recommendations

RB706D-40FHT146 (Rohm Semiconductor): This substitute meets all mandatory compatibility criteria with a 40 V reverse voltage rating and 30 mA average rectified current, both equal to or exceeding the DB3X314F0L specifications. The part is marked as "Not For New Designs," indicating limited long-term availability. ROHS3 compliance and MSL 1 rating match the original part. This substitute is suitable for direct replacement in existing designs where the higher voltage rating presents no circuit constraint.

RB706D-40T146 (Rohm Semiconductor): This substitute meets all mandatory compatibility criteria with a 40 V reverse voltage rating. However, the average rectified current is rated at 15 mA per diode, which is below the 30 mA specification of the DB3X314F0L. This part carries an Active product status, indicating ongoing availability and suitability for new designs. ROHS3 compliance and MSL 1 rating match the original part. This substitute is applicable only in circuits where the reduced current rating of 15 mA is acceptable for the intended application.

Frequently Asked Questions (FAQ)

Q: Can RB706D-40FHT146 be used as a direct replacement for DB3X314F0L?

A: Yes. The RB706D-40FHT146 satisfies all mandatory compatibility parameters: identical diode configuration (1 pair series connection), Schottky technology, surface mount type, TO-236-3 package, and 125°C maximum junction temperature. The 40 V reverse voltage rating exceeds the 30 V requirement, and the 30 mA current rating matches the original specification.

Q: Why does RB706D-40T146 have a lower current rating than the original part?

A: The RB706D-40T146 is specified with a 15 mA average rectified current per diode, compared to 30 mA for the DB3X314F0L. This is a distinct product variant within the RB706 series. Substitution with this part is valid only if circuit requirements do not exceed 15 mA per diode.

Q: Are the package dimensions identical across all three parts?

A: Yes. All three parts use the TO-236-3 (SC-59, SOT-23-3) surface mount package, ensuring mechanical and footprint compatibility on printed circuit boards.

Q: What is the significance of the "Not For New Designs" status on RB706D-40FHT146?

A: This designation indicates that Rohm Semiconductor does not recommend this part for new product development. While it remains functionally equivalent and electrically compatible, long-term availability may be limited. The RB706D-40T146, marked as Active, is the preferred choice for new designs requiring Rohm components.

Q: Do all substitute parts maintain RoHS compliance?

A: Yes. Both Rohm substitutes carry ROHS3 compliance, which is equivalent to RoHS compliance. All three parts meet environmental and regulatory requirements for lead-free manufacturing.

Q: What is the difference in forward voltage characteristics between the original and substitute parts?

A: The DB3X314F0L specifies a maximum forward voltage of 1 V at 30 mA. The Rohm substitutes specify 370 mV at 1 mA. These measurements are taken at different current levels and cannot be directly compared. Both specifications are within acceptable ranges for Schottky diode applications.

Q: Can moisture sensitivity level differences affect substitution?

A: No. All three parts carry MSL 1 (Unlimited), indicating identical moisture sensitivity classification and handling requirements.