GS1D-LTP Equivalent & Substitute Parts

Part Overview

The GS1D-LTP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 1 A average rectified current in a DO-214AC (SMA) surface mount package. This component is classified as "Not For New Designs," indicating it has been superseded in the manufacturer's product line. Identifying equivalent and substitute parts is necessary for applications requiring continued support, legacy system maintenance, or when the primary part becomes unavailable.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1	V @ 1 A
Reverse Recovery Time (trr)	2	µs
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55°C ~ 150°C	—

Substitute Part Grouping Explanation

Substitution of the GS1D-LTP is determined by electrical and mechanical compatibility across the following criteria:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 200 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Package / Case: Must be DO-214AC or SMA equivalent
Mounting Type: Must be Surface Mount
Operating Temperature Range: Must encompass or exceed -55°C to 150°C

Secondary Compatibility Factors:

Voltage - Forward (Vf) (Max): Lower or equal values preferred for thermal efficiency
Reverse Recovery Time (trr): Lower or equal values acceptable for improved switching performance
Current - Reverse Leakage: Lower or equal values acceptable for reduced standby current

Parts meeting all primary criteria are classified as direct substitutes. Parts exceeding current or voltage ratings while maintaining package and mounting compatibility are classified as upgrades suitable for direct replacement.

Parameter Comparison

Parameter	GS1D-LTP (Main)	GF1D (Fairchild)	S1D (YAGEO)	S2DA (Diodes Inc.)
Manufacturer	Micro Commercial Co	Fairchild Semiconductor	YAGEO	Diodes Incorporated
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1.5 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A	1 V @ 1 A	1.1 V	1.15 V @ 1.5 A
Reverse Recovery Time (trr)	2 µs	2 µs	—	1.5 µs
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	—	5 µA @ 200 V
Capacitance @ Vr, F	15 pF @ 4V, 1MHz	15 pF @ 4V, 1MHz	—	20 pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-55°C ~ 150°C	-65°C ~ 175°C	—	-55°C ~ 150°C
Product Status	Not For New Designs	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	—	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

GF1D (Fairchild Semiconductor) - Recommended Primary Substitute

The GF1D is a direct electrical and mechanical equivalent to the GS1D-LTP. Both parts share identical voltage ratings (200 V), current ratings (1 A), forward voltage characteristics (1 V @ 1 A), reverse recovery time (2 µs), and reverse leakage current (5 µA @ 200 V). The GF1D maintains the same DO-214AC (SMA) package and surface mount configuration. The GF1D operates across an extended temperature range (-65°C to 175°C) compared to the GS1D-LTP (-55°C to 150°C), providing additional thermal margin. The GF1D holds Active product status, ensuring continued availability and manufacturing support. No compliance or certification disadvantages exist relative to the main part.

S1D (YAGEO) - Secondary Substitute

The S1D is electrically compatible with the GS1D-LTP, matching the 200 V reverse voltage and 1 A current ratings in the same DO-214AC (SMA) surface mount package. The S1D is ROHS3 compliant and holds Active product status. Detailed electrical parameters including reverse recovery time and reverse leakage current are not provided in the available data; however, the part meets all primary substitution criteria. The S1D is supplied in Cut Tape (CT) and Digi-Reel® packaging, which may require adjustment to assembly processes if the original application specified Tape & Reel (TR) format.

S2DA (Diodes Incorporated) - Upgrade Substitute

The S2DA exceeds the electrical specifications of the GS1D-LTP, providing 1.5 A average rectified current versus 1 A, while maintaining the same 200 V reverse voltage rating and DO-214AC (SMA) package. The S2DA exhibits improved reverse recovery time (1.5 µs versus 2 µs) and maintains identical reverse leakage current (5 µA @ 200 V). The S2DA is ROHS3 compliant and REACH unaffected. However, the S2DA is classified as Obsolete, indicating discontinued manufacturing and potential future unavailability. The S2DA is suitable for direct replacement in applications where higher current capacity provides design margin, but the Obsolete status limits its viability for long-term supply assurance.

Frequently Asked Questions (FAQ)

Q: Can the GF1D directly replace the GS1D-LTP without circuit modification?

A: Yes. The GF1D is a direct substitute. Both parts share identical electrical ratings (200 V, 1 A), forward voltage (1 V @ 1 A), reverse recovery time (2 µs), and reverse leakage current (5 µA @ 200 V). The DO-214AC (SMA) package and surface mount configuration are identical. No circuit modifications are required.

Q: What is the difference between the GS1D-LTP and S2DA in terms of current rating?

A: The GS1D-LTP is rated for 1 A average rectified current, while the S2DA is rated for 1.5 A. The S2DA provides 50% additional current capacity. Both parts maintain the same 200 V reverse voltage rating and DO-214AC (SMA) package. The S2DA is suitable for applications requiring higher current handling, but its Obsolete status should be considered for long-term availability.

Q: Why is the GS1D-LTP marked "Not For New Designs"?

A: This designation indicates the part has been superseded by the manufacturer and is no longer recommended for new product development. The GF1D from Fairchild Semiconductor is the recommended alternative for new designs, as it maintains equivalent electrical performance and holds Active product status.

Q: Are all substitute parts ROHS3 compliant?

A: The GS1D-LTP, S1D, and S2DA are all ROHS3 compliant. The GF1D compliance status is not specified in the available data. Verify GF1D ROHS3 compliance with the supplier if regulatory certification is required for your application.

Q: Does packaging format affect substitution compatibility?

A: Packaging format (Tape & Reel, Cut Tape, or Digi-Reel®) affects assembly process compatibility but not electrical or mechanical substitution. The GS1D-LTP is supplied in Tape & Reel (TR) format. The S1D is supplied in Cut Tape (CT) and Digi-Reel® format. If your assembly equipment requires a specific packaging format, coordinate with your supplier to confirm availability. The electrical and mechanical compatibility remain unchanged regardless of packaging format.

Q: What is the operating temperature range difference between GS1D-LTP and GF1D?

A: The GS1D-LTP operates from -55°C to 150°C junction temperature. The GF1D operates from -65°C to 175°C. The GF1D provides an extended lower temperature limit (10°C additional margin) and extended upper temperature limit (25°C additional margin). This extended range may provide thermal design margin in applications operating near temperature extremes.

Q: Can the S1D be used if detailed electrical parameters are not provided?

A: The S1D meets all primary substitution criteria: 200 V reverse voltage, 1 A current rating, DO-214AC (SMA) package, and surface mount configuration. However, detailed parameters such as reverse recovery time and reverse leakage current are not available. If your application has specific requirements for these parameters, obtain the complete S1D datasheet from YAGEO before finalizing the substitution decision.

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