DB101 Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DB101 is a single-phase bridge rectifier manufactured by SMC Diode Solutions, rated for 50 V peak reverse voltage and 1 A average rectified current. This component is actively produced and widely used in AC-to-DC conversion applications requiring compact through-hole mounting in 4-EDIP packaging.

Substitute parts become necessary when the primary part experiences supply constraints, extended lead times, or when design requirements permit operation at higher voltage ratings or with alternative manufacturer specifications. The parts listed below maintain electrical and mechanical compatibility within defined parameter tolerances.

Substiute Parts

DB101

SMC Diode SolutionsIn Stock: 1095DB101 Datasheet

Current PartRFQ

DF01

Good-Ark SemiconductorIn Stock: 3637DF01 Datasheet

Parametric EquivalentRFQ

DB101-BP

Micro Commercial CoIn Stock: 1568DB101-BP Datasheet

Parametric EquivalentRFQ

DF005-G

Comchip TechnologyIn Stock: 2024DF005-G Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DB101 are classified based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

• Diode Type: Single Phase (required match)
• Current - Average Rectified (Io): 1 A (required match)
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1 A or equivalent (required match)
• Mounting Type: Through Hole (required match)
• Package / Case: 4-EDIP (0.321", 8.15mm) (required match)
• Operating Temperature Range: -55°C to 150°C (required match)

Allowable Variation Parameters:

• Voltage - Peak Reverse (Max): 50 V or higher (higher ratings are acceptable for applications not requiring exact voltage matching)
• Current - Reverse Leakage @ Vr: Values at or below specified maximum (lower leakage is acceptable)
• Manufacturer and supplier device package designation (different manufacturers may use different package codes for identical physical packages)

Substitute Parts Identified:

1. DF01 (Good-Ark Semiconductor): Meets all primary criteria. Peak reverse voltage rated at 100 V (higher than DB101, acceptable for general-purpose applications). Forward voltage specified at 500 mA rather than 1 A; reverse leakage at 100 V. Active product status.

2. DB101-BP (Micro Commercial Co): Exact electrical match to DB101 (50 V, 1 A, 1.1 V forward voltage). Reverse leakage specified at 10 µA (higher than DB101's 5 µA). Marked as "Not For New Designs" but remains in inventory. Identical package and mounting.

3. DF005-G (Comchip Technology): Meets all primary criteria. Electrical specifications identical to DB101 (50 V, 1 A, 1.1 V forward voltage). Reverse leakage specified at 10 µA. Active product status. Supplier device package designated as 4-DF (physically equivalent to DB-M).

Parameter Comparison

Engineering Selection Recommendations

DB101-BP (Micro Commercial Co): This part provides exact electrical equivalence to the DB101 with identical voltage and current ratings. However, the "Not For New Designs" status indicates the manufacturer is discontinuing this product line. Use only for replacement or repair of existing assemblies where supply of the primary DB101 is unavailable.

DF005-G (Comchip Technology): This part is recommended as the primary substitute for new designs. It maintains identical electrical specifications to the DB101 (50 V, 1 A, 1.1 V forward voltage) with active product status. The reverse leakage specification of 10 µA (versus DB101's 5 µA) remains within acceptable limits for standard bridge rectifier applications. All compliance certifications (ROHS3, MSL 1) are equivalent.

DF01 (Good-Ark Semiconductor): This part is suitable for applications where higher voltage rating (100 V) provides design margin or where the application voltage is below 50 V. The forward voltage specification is provided at 500 mA rather than 1 A; this does not preclude use at 1 A operation but requires verification against the manufacturer's detailed datasheet. Active product status and full compliance certifications apply.

Frequently Asked Questions (FAQ)

Q: Can DF01 be used as a direct replacement for DB101 in all applications?

A: DF01 meets the core electrical requirements (1 A average rectified current, 1.1 V forward voltage, identical package and mounting). The 100 V peak reverse voltage rating exceeds the DB101's 50 V specification, making it suitable for applications operating at or below 50 V. The forward voltage specification at 500 mA (rather than 1 A) requires confirmation against the DF01 datasheet for applications operating at full 1 A current.

Q: Why is DB101-BP marked "Not For New Designs"?

A: This designation indicates the manufacturer (Micro Commercial Co) is phasing out this product line. While DB101-BP remains electrically equivalent to DB101, it should not be selected for new circuit designs. Use DB101-BP only for replacement of failed components in existing assemblies or when DB101 and DF005-G are unavailable.

Q: Are all substitute parts physically interchangeable with DB101?

A: Yes. All listed substitutes use the 4-EDIP (0.321", 8.15mm) package with through-hole mounting. Physical footprint and lead spacing are identical, allowing direct PCB substitution without layout modification.

Q: What is the significance of the reverse leakage current difference between DB101 (5 µA) and DF005-G (10 µA)?

A: Reverse leakage current represents the small current flowing through the rectifier in the reverse-biased state. The DB101 specification of 5 µA at 50 V is lower than DF005-G's 10 µA at 50 V. For most standard AC-to-DC conversion applications, this difference is negligible. Applications with stringent leakage requirements (such as precision analog circuits) should confirm DF005-G performance against circuit specifications.

Q: Do all substitute parts meet the same environmental and compliance standards as DB101?

A: Yes. All listed substitutes are ROHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, and operate across the identical temperature range (-55°C to 150°C). Compliance certifications are equivalent across all parts.