DB103 Bridge Rectifier Single Phase 200V 1A Equivalent & Substitute Parts

Part Overview

The DB103 is a single-phase bridge rectifier diode rated for 200V peak reverse voltage and 1A average rectified current in a through-hole DB-1 package. The main part manufactured by Micro Commercial Co is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Alternative sources and packaging options are available from multiple manufacturers while maintaining electrical compatibility within specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Diode Type	Single Phase	—
Voltage - Peak Reverse (Max)	200	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.1	V @ 1 A
Current - Reverse Leakage @ Vr	10	µA @ 200 V
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	4-EDIP (0.321", 8.15mm)	—

Substitute Part Grouping Explanation

Substitute parts for the DB103 are categorized based on electrical parameter compatibility and product availability status. The primary substitution criteria are:

Critical Parameters for Substitution:

Voltage - Peak Reverse (Max): 200V minimum
Current - Average Rectified (Io): 1A minimum
Diode Type: Single Phase
Mounting Type: Through Hole
Operating Temperature Range: -55°C to 150°C

Grouping Logic:

Direct Equivalent (Identical Electrical Specifications): Parts with matching 200V, 1A ratings and identical forward voltage characteristics qualify as direct equivalents. These include DB103-BP (Micro Commercial Co, tube packaging) and DB103 (Rectron USA, active product status).

Compatible Substitutes (Higher Current Rating): Parts rated for 1.5A or higher current capacity at 200V can substitute for 1A applications. DF02M (onsemi) and DF202-G (Comchip Technology) fall into this category, offering improved current handling while maintaining voltage specifications.

Parametric Equivalents (Matching Electrical Performance): Parts with identical voltage and current ratings from alternative manufacturers, such as DF02-G (Comchip Technology) and DF03 (SMC Diode Solutions), provide functional equivalence despite potential package variations.

Voltage-Derated Alternatives: DF005M (Fairchild Semiconductor) operates at 50V peak reverse voltage, suitable only for applications with lower voltage requirements than the original 200V specification.

Higher Voltage Alternatives: DF06M (onsemi) rated for 600V can substitute in applications where voltage margin is required, though this represents over-specification for 200V circuits.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Voltage - Peak Reverse (Max)	Current - Average Rectified (Io)	Vf (Max) @ If	Reverse Leakage @ Vr	Operating Temperature	Package / Case	Product Status	RoHS Status
DB103	Micro Commercial Co	200 V	1 A	1.1 V @ 1 A	10 µA @ 200 V	-55 to 150°C	4-EDIP (0.321", 8.15mm)	Obsolete	RoHS non-compliant
DB103-BP	Micro Commercial Co	200 V	1 A	1.1 V @ 1 A	10 µA @ 200 V	-55 to 150°C	4-EDIP (0.321", 8.15mm)	Not For New Designs	ROHS3 Compliant
DB103	Rectron USA	200 V	1 A	1 V @ 1 A	1 µA @ 200 V	-55 to 150°C	4-EDIP (0.321", 8.15mm)	Active	ROHS3 Compliant
DF02M	onsemi	200 V	1.5 A	1.1 V @ 1 A	5 µA @ 200 V	-55 to 150°C	4-EDIP (0.300", 7.62mm)	Obsolete	ROHS3 Compliant
DF02-G	Comchip Technology	200 V	1 A	1.1 V @ 1 A	10 µA @ 100 V	-55 to 150°C	4-EDIP (0.321", 8.15mm)	Active	ROHS3 Compliant
DF03	SMC Diode Solutions	200 V	1 A	1.1 V @ 1 A	5 µA @ 200 V	-55 to 150°C	4-EDIP (0.321", 8.15mm)	Active	ROHS3 Compliant
DF202-G	Comchip Technology	200 V	2 A	1.1 V @ 2 A	10 µA @ 200 V	-55 to 150°C	4-EDIP (0.321", 8.15mm)	Active	ROHS3 Compliant
DF005M	Fairchild Semiconductor	50 V	1 A	1.1 V @ 1 A	10 µA @ 50 V	-65 to 150°C	4-EDIP (0.300", 7.62mm)	Active	Not specified
DF06M	onsemi	600 V	1.5 A	1.1 V @ 1 A	5 µA @ 600 V	-55 to 150°C	4-EDIP (0.300", 7.62mm)	Obsolete	ROHS3 Compliant

Engineering Selection Recommendations

For New Designs and Active Production:

DB103 (Rectron USA) is the recommended primary substitute. This part maintains identical electrical specifications to the original DB103, carries active product status, and meets ROHS3 compliance requirements. The Rectron USA version demonstrates superior reverse leakage characteristics (1 µA vs. 10 µA) and lower forward voltage drop (1 V vs. 1.1 V), providing improved performance margins.

For RoHS3 Compliance Requirements:

DF02-G (Comchip Technology) and DF03 (SMC Diode Solutions) are active products with ROHS3 certification. Both maintain the 200V, 1A electrical specification and identical package dimensions (0.321", 8.15mm). DF03 offers lower reverse leakage (5 µA) compared to the original specification.

For Higher Current Margin Applications:

DF202-G (Comchip Technology) provides 2A current capacity at 200V with active product status and ROHS3 compliance. This part is suitable for applications requiring additional current headroom while maintaining the same voltage rating and package footprint.

For Voltage Over-Specification:

DF06M (onsemi) rated for 600V peak reverse voltage can substitute in circuits where voltage margin is critical. This part carries ROHS3 compliance but is classified as obsolete.

Not Recommended:

DF005M (Fairchild Semiconductor) is limited to 50V peak reverse voltage and is unsuitable for 200V circuit applications. DB103-BP (Micro Commercial Co) is classified as "Not For New Designs" and should not be selected for new production.

Frequently Asked Questions (FAQ)

Q: Can DB103-BP substitute for the original DB103?

A: DB103-BP maintains identical electrical specifications (200V, 1A) and package dimensions but is classified as "Not For New Designs." For new production, select DB103 (Rectron USA) or DF02-G (Comchip Technology) instead.

Q: What is the difference between DB103 from Micro Commercial Co and Rectron USA?

A: Both parts are rated 200V, 1A single-phase bridge rectifiers in identical packages. The Rectron USA version is active, ROHS3 compliant, and demonstrates superior electrical characteristics with lower forward voltage (1 V vs. 1.1 V) and reverse leakage (1 µA vs. 10 µA).

Q: Can DF202-G (2A) replace DB103 (1A)?

A: Yes. DF202-G is rated for 2A average rectified current at 200V, making it electrically compatible for 1A applications. The higher current rating provides additional design margin. Package dimensions are identical (0.321", 8.15mm).

Q: Why is DF005M listed as a substitute if it is only 50V?

A: DF005M is voltage-derated and suitable only for applications with maximum voltage requirements below 50V. It cannot substitute in circuits requiring the full 200V specification of the original DB103.

Q: Are there package compatibility concerns between substitute parts?

A: Most substitutes use the 4-EDIP package with 0.321" (8.15mm) spacing, matching the original DB103. DF02M and DF06M use 4-EDIP with 0.300" (7.62mm) spacing, requiring PCB layout verification before substitution.

Q: Which substitute offers the best RoHS compliance?

A: DB103 (Rectron USA), DF02-G (Comchip Technology), DF03 (SMC Diode Solutions), DF202-G (Comchip Technology), and DF06M (onsemi) all meet ROHS3 compliance requirements. The original DB103 from Micro Commercial Co is RoHS non-compliant.

Q: What is the temperature operating range for substitute parts?

A: All substitute parts maintain the -55°C to 150°C (TJ) operating temperature range, matching the original DB103 specification. DF005M extends to -65°C minimum, providing additional low-temperature margin.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message