DBLS156G Bridge Rectifier Equivalent & Substitute Parts

Part Overview

The DBLS156G is a single-phase bridge rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 800 V peak reverse voltage and 1.5 A average rectified current. This surface mount component operates across a temperature range of -55°C to 150°C and is packaged in a 4-SMD, Gull Wing configuration. The part is currently Active in product status with 59,550 units in stock inventory.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter set. Alternative sources and package variants may be required due to inventory availability, supply chain considerations, or specific application requirements.

Key Parameters

Parameter	Value	Unit
Voltage - Peak Reverse (Max)	800	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 @ 800 V
Operating Temperature Range	-55 to 150	°C (TJ)
Mounting Type	Surface Mount
Package / Case	4-SMD, Gull Wing
Diode Type	Single Phase
Technology	Standard
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the DBLS156G is determined by matching the following critical parameters:

Mandatory Matching Parameters:

Voltage - Peak Reverse (Max): 800 V
Current - Average Rectified (Io): 1.5 A
Diode Type: Single Phase
Technology: Standard
Operating Temperature Range: -55°C to 150°C (TJ)
Mounting Type: Surface Mount
Package / Case: 4-SMD, Gull Wing

Allowable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: Within specification limits
Current - Reverse Leakage @ Vr: Within specification limits
Supplier Device Package designation: May differ while maintaining mechanical compatibility
Product Status: Active or Not For New Designs
Manufacturer: Different manufacturers permitted if parameters align

Substitute parts are grouped into two categories: parametric equivalents from alternative manufacturers and variants with identical electrical ratings but different package designations or supplier classifications.

Parameter Comparison

Parameter	DBLS156G	DBLS156GH	DF08S	DF1508S-E3/77	DFL1508S-E3/77
Manufacturer	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation	onsemi	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Voltage - Peak Reverse (Max)	800 V	800 V	800 V	800 V	800 V
Current - Average Rectified (Io)	1.5 A	1.5 A	1.5 A	1.5 A	1.5 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 1.5 A	1.1 V @ 1.5 A	1.1 V @ 1 A	1.1 V @ 1.5 A	1.1 V @ 1.5 A
Current - Reverse Leakage @ Vr	2 µA @ 800 V	2 µA @ 800 V	10 µA @ 800 V	10 µA @ 800 V	5 µA @ 800 V
Operating Temperature Range	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing	4-SMD, Gull Wing
Diode Type	Single Phase	Single Phase	Single Phase	Single Phase	Single Phase
Technology	Standard	Standard	Standard	Standard	Standard
Product Status	Active	Active	Not For New Designs	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory (Pcs)	59,550	3,829	35,100	6,472	1,401

Engineering Selection Recommendations

DBLS156GH is a direct parametric equivalent manufactured by Taiwan Semiconductor Corporation with identical electrical specifications and automotive-grade qualification (AEC-Q101). This part maintains the same reverse leakage current of 2 µA and forward voltage characteristics. Selection of DBLS156GH is appropriate for applications requiring automotive-grade certification or when Taiwan Semiconductor Corporation supply chain continuity is prioritized.

DF1508S-E3/77 is manufactured by Vishay General Semiconductor - Diodes Division and maintains all critical electrical parameters with 10 µA reverse leakage current. This part is Active in product status and suitable for general industrial applications where Vishay component qualification is required.

DFL1508S-E3/77 is also manufactured by Vishay General Semiconductor - Diodes Division with improved reverse leakage performance at 5 µA, positioning it between the DBLS156G specification and the DF1508S-E3/77. This part is Active in product status and appropriate for applications with stricter leakage requirements.

DF08S is manufactured by onsemi with equivalent voltage and current ratings. This part carries a "Not For New Designs" product status designation, indicating it is suitable only for legacy system maintenance or existing design continuity. The reverse leakage current specification of 10 µA and forward voltage measurement at 1 A rather than 1.5 A represent minor specification variations.

All substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity level (MSL 1), and identical operating temperature ranges. Selection should be based on manufacturer preference, supply availability, product status requirements for new designs, and specific leakage current performance needs.

Frequently Asked Questions (FAQ)

Q: Can DBLS156GH be used as a direct replacement for DBLS156G?

A: Yes. DBLS156GH is a parametric equivalent with identical voltage rating (800 V), current rating (1.5 A), forward voltage (1.1 V @ 1.5 A), reverse leakage (2 µA @ 800 V), and operating temperature range (-55°C to 150°C). Both parts use 4-SMD, Gull Wing packaging and are surface mount components. The primary difference is DBLS156GH includes automotive-grade qualification (AEC-Q101).

Q: What is the difference between DF1508S-E3/77 and DFL1508S-E3/77?

A: Both parts are manufactured by Vishay and maintain identical voltage (800 V) and current (1.5 A) ratings with 4-SMD, Gull Wing packaging. The primary difference is reverse leakage current: DF1508S-E3/77 specifies 10 µA @ 800 V, while DFL1508S-E3/77 specifies 5 µA @ 800 V. DFL1508S-E3/77 offers lower leakage performance for applications requiring reduced reverse current.

Q: Why is DF08S marked "Not For New Designs"?

A: DF08S carries a "Not For New Designs" product status, indicating it is a legacy component. This designation means the part is available for existing applications and maintenance but should not be selected for new circuit designs. For new designs, DBLS156GH, DF1508S-E3/77, or DFL1508S-E3/77 are preferred alternatives with Active product status.

Q: Are all substitute parts compatible with the same PCB footprint?

A: Yes. All substitute parts specified use 4-SMD, Gull Wing packaging with surface mount mounting type. PCB footprint compatibility is maintained across DBLS156G, DBLS156GH, DF08S, DF1508S-E3/77, and DFL1508S-E3/77.

Q: What is the significance of reverse leakage current differences?

A: Reverse leakage current represents the small current flowing through the diode when reverse biased. DBLS156G and DBLS156GH specify 2 µA @ 800 V, while DF1508S-E3/77 and DF08S specify 10 µA @ 800 V, and DFL1508S-E3/77 specifies 5 µA @ 800 V. Lower leakage current is beneficial in high-impedance circuits or applications sensitive to standby current consumption. All values remain within acceptable limits for standard bridge rectifier applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All parts listed—DBLS156G, DBLS156GH, DF08S, DF1508S-E3/77, and DFL1508S-E3/77—are ROHS3 compliant and carry unlimited moisture sensitivity level (MSL 1).

Q: Which substitute part should be selected for automotive applications?

A: DBLS156GH is qualified to AEC-Q101 automotive standard and is the appropriate selection for automotive applications. This part maintains identical electrical specifications to DBLS156G while providing automotive-grade certification.

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