GS2B-LTP Equivalent & Substitute Parts

Part Overview

The GS2B-LTP is a general-purpose rectifier diode rated for 100 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AC (SMA) package. This part is classified as "Not For New Designs," indicating it has reached end-of-life status. Identification of equivalent and substitute parts is necessary to support existing designs, maintain production continuity, and ensure component availability for legacy systems.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	100 V
Current - Average Rectified (Io)	2 A
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 2 A
Speed	Standard Recovery >500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	5 µA @ 100 V
Package / Case	DO-214AC, SMA
Mounting Type	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the GS2B-LTP are classified based on strict electrical and mechanical parameter matching within the general-purpose rectifier diode category. The substitution logic is determined by the following criteria:

Primary Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io): 2 A
Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 2 A
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
Operating Temperature - Junction: -55°C ~ 150°C

Parametric Equivalent Classification: Parts that match all primary electrical parameters and package specifications are classified as parametric equivalents. These parts satisfy the functional requirements of the GS2B-LTP in circuit applications with identical voltage, current, and thermal ratings.

Secondary Consideration: Recovery speed characteristics (Standard Recovery >500ns, > 200mA) are maintained across all substitute parts to ensure compatibility with circuit timing requirements.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	Reverse Leakage @ Vr	Package	Product Status	Inventory
GS2B-LTP	Micro Commercial Co	100 V	2 A	1.1 V @ 2 A	Standard Recovery >500ns, > 200mA	5 µA @ 100 V	DO-214AC (SMA)	Not For New Designs	760 Pcs
S2B-HF	Comchip Technology	100 V	2 A	1.1 V @ 2 A	Standard Recovery >500ns, > 200mA	5 µA @ 100 V	DO-214AC (SMA)	Active	882 Pcs
SA2B-E3/5AT	Vishay General Semiconductor - Diodes Division	100 V	2 A	1.1 V @ 2 A	Standard Recovery >500ns, > 200mA	3 µA @ 100 V	DO-214AC (SMA)	Active	8343 Pcs
SA2B-E3/61T	Vishay General Semiconductor - Diodes Division	100 V	2 A	1.1 V @ 2 A	Standard Recovery >500ns, > 200mA	3 µA @ 100 V	DO-214AC (SMA)	Active	30200 Pcs
SA2B-M3/5AT	Vishay General Semiconductor - Diodes Division	100 V	2 A	1.1 V @ 2 A	Standard Recovery >500ns, > 200mA	3 µA @ 100 V	DO-214AC (SMA)	Active	696 Pcs
SA2B-M3/61T	Vishay General Semiconductor - Diodes Division	100 V	2 A	1.1 V @ 2 A	Standard Recovery >500ns, > 200mA	3 µA @ 100 V	DO-214AC (SMA)	Active	950 Pcs
US1B-M3/5AT	Vishay General Semiconductor - Diodes Division	100 V	1 A	1 V @ 1 A	Fast Recovery =< 500ns, > 200mA	10 µA @ 100 V	DO-214AC (SMA)	Active	923 Pcs

Engineering Selection Recommendations

Parametric Equivalent Selection (Recommended for Direct Replacement):

The following parts are parametric equivalents that match all primary electrical specifications of the GS2B-LTP:

SA2B-E3/61T (Vishay General Semiconductor - Diodes Division): Active product status with highest inventory availability (30,200 pcs). Meets all voltage, current, and thermal requirements. ROHS3 compliant and REACH unaffected.
SA2B-E3/5AT (Vishay General Semiconductor - Diodes Division): Active product status with substantial inventory (8,343 pcs). Identical electrical specifications to SA2B-E3/61T. Packaging variant (5AT vs. 61T) represents different tape reel configurations.
S2B-HF (Comchip Technology): Active product status with adequate inventory (882 pcs). Meets all primary electrical specifications. ROHS3 compliant.
SA2B-M3/61T (Vishay General Semiconductor - Diodes Division): Active product status with inventory availability (950 pcs). Meets all primary electrical specifications. Packaging variant (M3/61T) represents different tape reel configuration.
SA2B-M3/5AT (Vishay General Semiconductor - Diodes Division): Active product status with limited inventory (696 pcs). Meets all primary electrical specifications. Packaging variant (M3/5AT) represents different tape reel configuration.

Non-Equivalent Part:

US1B-M3/5AT (Vishay General Semiconductor - Diodes Division): This part does not qualify as a direct substitute. Current rating is 1 A (versus 2 A required), and recovery speed is Fast Recovery =< 500ns (versus Standard Recovery >500ns required). This part is suitable only for applications with reduced current requirements.

Compliance and Regulatory Status:

All recommended substitute parts maintain ROHS3 compliance and REACH unaffected status, consistent with the original GS2B-LTP specifications. Moisture Sensitivity Level (MSL) is 1 (Unlimited) across all parts, indicating no special moisture handling requirements.

Frequently Asked Questions (FAQ)

Q: Can SA2B-E3/61T be used as a direct replacement for GS2B-LTP?

A: Yes. SA2B-E3/61T is a parametric equivalent with identical voltage (100 V), current (2 A), forward voltage (1.1 V @ 2 A), and package specifications (DO-214AC SMA). The part is in active production status with high inventory availability.

Q: What is the difference between SA2B-E3/5AT and SA2B-E3/61T?

A: Both parts have identical electrical specifications. The designation difference (5AT vs. 61T) refers to tape reel packaging configurations. Selection between these variants depends on equipment compatibility with specific reel formats.

Q: Why is US1B-M3/5AT listed but not recommended as a substitute?

A: US1B-M3/5AT has a maximum average rectified current rating of 1 A, whereas the GS2B-LTP is rated for 2 A. This part cannot handle the full current requirement of the original design and is not a suitable substitute.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain ROHS3 compliance and REACH unaffected status, consistent with regulatory requirements for the GS2B-LTP.

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

A: All substitute parts operate across the same junction temperature range as the GS2B-LTP: -55°C to 150°C.

Q: Do substitute parts require different handling or storage procedures?

A: No. All substitute parts have Moisture Sensitivity Level (MSL) of 1 (Unlimited), indicating no special moisture handling or storage requirements beyond standard component handling practices.

Q: Can I mix different substitute part manufacturers in the same production batch?

A: All substitute parts meet identical electrical and package specifications. However, design documentation and procurement procedures should specify the selected part number to maintain consistency and traceability in production records.

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