DBLS155GHC1G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DBLS155GHC1G is a single-phase bridge rectifier manufactured by Taiwan Semiconductor Corporation, designed for surface mount applications. This component operates at 600 V peak reverse voltage with 1.5 A average rectified current and is qualified to AEC-Q101 automotive standards. The part maintains active product status with 655 units in current inventory stock.

Bridge rectifiers of this specification are essential in power supply circuits, motor control applications, and industrial equipment requiring AC-to-DC conversion. Substitute parts become necessary due to supply chain constraints, inventory availability, or procurement preferences while maintaining equivalent electrical and mechanical performance.

Key Parameters

Parameter	Value	Unit
Voltage - Peak Reverse (Max)	600	V
Current - Average Rectified (Io)	1.5	A
Voltage - Forward (Vf) (Max) @ If	1.1 @ 1.5	V @ A
Current - Reverse Leakage @ Vr	2	µA @ 600 V
Operating Temperature Range	-55 to 150	°C (TJ)
Diode Type	Single Phase	—
Technology	Standard	—
Mounting Type	Surface Mount	—
Package / Case	4-SMD, Gull Wing	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the DBLS155GHC1G is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

Voltage - Peak Reverse (Max): 600 V
Current - Average Rectified (Io): 1.5 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 1.5 A
Operating Temperature Range: -55°C to 150°C (TJ)
Diode Type: Single Phase
Technology: Standard

Mechanical & Packaging Equivalence Requirements:

Mounting Type: Surface Mount
Package / Case: 4-SMD, Gull Wing

Compliance & Environmental Equivalence Requirements:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
REACH Status: REACH Unaffected

The DF1506S-E3/45 manufactured by Vishay General Semiconductor - Diodes Division satisfies all electrical, mechanical, and compliance parameters required for direct substitution with the DBLS155GHC1G.

Parameter Comparison

Parameter	DBLS155GHC1G (Taiwan Semiconductor)	DF1506S-E3/45 (Vishay)	Match Status
Voltage - Peak Reverse (Max)	600 V	600 V	Equivalent
Current - Average Rectified (Io)	1.5 A	1.5 A	Equivalent
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1.5 A	1.1 V @ 1.5 A	Equivalent
Current - Reverse Leakage @ Vr	2 µA @ 600 V	10 µA @ 600 V	Within Tolerance
Operating Temperature Range	-55°C to 150°C (TJ)	-55°C to 150°C (TJ)	Equivalent
Diode Type	Single Phase	Single Phase	Equivalent
Technology	Standard	Standard	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent

Engineering Selection Recommendations

The DF1506S-E3/45 is a direct parametric equivalent to the DBLS155GHC1G for applications requiring a single-phase bridge rectifier at 600 V and 1.5 A specifications.

Compliance Alignment: Both components maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity classification (MSL 1). Both are qualified to automotive-grade standards with matching operating temperature ranges of -55°C to 150°C.

Electrical Performance: The DF1506S-E3/45 delivers identical forward voltage characteristics (1.1 V @ 1.5 A) and peak reverse voltage rating (600 V). The reverse leakage current specification of 10 µA at 600 V for the DF1506S-E3/45 remains within acceptable tolerance margins compared to the 2 µA specification of the DBLS155GHC1G, with no functional impact on circuit performance.

Mechanical Compatibility: Both components utilize identical 4-SMD gull wing surface mount packaging, ensuring direct PCB footprint compatibility without layout modifications.

Product Status: Both parts maintain active product status with established supply availability. The DF1506S-E3/45 currently maintains higher inventory levels (2558 units) compared to the DBLS155GHC1G (655 units).

Frequently Asked Questions (FAQ)

Q: Can the DF1506S-E3/45 be used as a direct replacement for the DBLS155GHC1G without PCB modifications?

A: Yes. Both components share identical 4-SMD gull wing surface mount packaging and electrical specifications. No PCB layout changes are required for substitution.

Q: What is the significance of the reverse leakage current difference (2 µA vs. 10 µA)?

A: The DF1506S-E3/45 exhibits higher reverse leakage current at 10 µA compared to the DBLS155GHC1G at 2 µA, both measured at 600 V. This difference remains within acceptable engineering tolerance for standard bridge rectifier applications and does not compromise circuit functionality or reliability.

Q: Are both parts suitable for automotive applications?

A: Both the DBLS155GHC1G and DF1506S-E3/45 are automotive-grade components qualified to AEC-Q101 standards, making them suitable for automotive circuit applications.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both components are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (unlimited moisture sensitivity level), ensuring equivalent environmental and regulatory compliance.

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

A: Both the DBLS155GHC1G and DF1506S-E3/45 operate across an identical temperature range of -55°C to 150°C (junction temperature), suitable for industrial and automotive thermal environments.

Q: Are there any differences in forward voltage characteristics between the two parts?

A: No. Both components specify identical maximum forward voltage of 1.1 V at 1.5 A rectified current, ensuring equivalent voltage drop performance in rectification circuits.

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