DBL104G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DBL104G is a single-phase bridge rectifier manufactured by Taiwan Semiconductor Corporation, designed for standard 400 V applications with 1 A average rectified current capacity. This component is classified as an active product with full RoHS3 compliance and unlimited moisture sensitivity rating. Bridge rectifiers serve as essential power conversion components in AC-to-DC conversion circuits, and substitute parts are identified when equivalent electrical and mechanical specifications are required for procurement flexibility, inventory management, or application-specific qualification requirements.

Key Parameters

Parameter	Value
Diode Type	Single Phase
Technology	Standard
Voltage - Peak Reverse (Max)	400 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A
Current - Reverse Leakage @ Vr	2 µA @ 400 V
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	4-DIP (0.300", 7.62mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the DBL104G are identified based on strict electrical and mechanical parameter equivalence. The substitution criteria are defined by the following parameters:

Voltage Rating: Peak reverse voltage of 400 V (maximum)
Current Rating: Average rectified current of 1 A
Forward Voltage Drop: 1.1 V maximum at 1 A forward current
Reverse Leakage Current: 2 µA maximum at 400 V reverse voltage
Operating Temperature Range: -55°C to 150°C junction temperature
Mounting Configuration: Through-hole technology
Package Footprint: 4-DIP with 0.300" (7.62mm) lead spacing
Compliance Standards: RoHS3 compliance and MSL Level 1 rating

Substitute parts must match all electrical parameters and physical package specifications to ensure direct functional replacement without circuit redesign or PCB layout modification.

Parameter Comparison

Parameter	DBL104G	DBL104GH
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation
Diode Type	Single Phase	Single Phase
Technology	Standard	Standard
Voltage - Peak Reverse (Max)	400 V	400 V
Current - Average Rectified (Io)	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1 A	1.1 V @ 1 A
Current - Reverse Leakage @ Vr	2 µA @ 400 V	2 µA @ 400 V
Operating Temperature Range	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole	Through Hole
Package / Case	4-DIP (0.300", 7.62mm)	4-DIP (0.300", 7.62mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active

Engineering Selection Recommendations

Both the DBL104G and DBL104GH are active products manufactured by Taiwan Semiconductor Corporation with identical electrical specifications and package configurations. The DBL104GH carries automotive-grade qualification (AEC-Q101) and is designated for automotive applications, whereas the DBL104G is the standard industrial variant. Selection between these parts depends on application requirements:

DBL104G is suitable for general industrial and commercial power conversion applications where standard-grade components meet performance and reliability requirements.

DBL104GH is specified for automotive and mission-critical applications requiring AEC-Q101 qualification and automotive-grade reliability standards.

Both parts maintain full RoHS3 compliance, unlimited moisture sensitivity rating, and identical electrical performance characteristics. Inventory availability differs between variants, with DBL104G showing 7100 units and DBL104GH showing 5692 units in current stock.

Frequently Asked Questions (FAQ)

Q: Can DBL104GH be used as a direct replacement for DBL104G in non-automotive applications?

A: Yes. The DBL104GH meets or exceeds all electrical and mechanical specifications of the DBL104G. The automotive qualification (AEC-Q101) represents an additional certification level and does not restrict use in standard industrial applications. Both parts are electrically and physically interchangeable.

Q: What is the significance of the AEC-Q101 qualification on the DBL104GH?

A: AEC-Q101 is an automotive electronics qualification standard that specifies reliability and quality requirements for semiconductor components used in automotive environments. The DBL104GH meets these stringent qualification criteria, making it suitable for automotive and high-reliability applications. Standard-grade parts like the DBL104G do not carry this certification.

Q: Are the package dimensions identical between DBL104G and DBL104GH?

A: Yes. Both parts use the 4-DIP package with 0.300" (7.62mm) lead spacing. PCB footprints and through-hole mounting requirements are identical, allowing direct substitution without layout modifications.

Q: What are the critical electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by: peak reverse voltage (400 V), average rectified current (1 A), forward voltage drop (1.1 V @ 1 A), reverse leakage current (2 µA @ 400 V), and operating temperature range (-55°C to 150°C). All substitute parts must match these specifications exactly.

Q: Is there a performance difference between DBL104G and DBL104GH in standard applications?

A: No. Both parts deliver identical electrical performance in standard applications. The DBL104GH includes additional automotive-grade qualification and testing, but functional performance characteristics remain equivalent.

Q: What does MSL Level 1 (Unlimited) mean for moisture sensitivity?

A: MSL Level 1 indicates the component has unlimited shelf life and requires no special moisture control during storage or handling. Both the DBL104G and DBL104GH carry this rating, eliminating moisture-related storage constraints.

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