GS1K-LTP Equivalent & Substitute Parts

Part Overview

The GS1K-LTP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 800 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (SMA) package. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Substitute parts are necessary when the GS1K-LTP becomes unavailable from inventory, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for equivalent electrical performance from alternative manufacturers. Equivalent diodes with matching or superior electrical ratings can be directly substituted provided they meet the application's voltage, current, and thermal requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	800	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1	V @ 1 A
Speed	Standard Recovery >500ns, > 200mA (Io)	-
Current - Reverse Leakage @ Vr	10	µA @ 800 V
Capacitance @ Vr, F	15	pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	-
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution of the GS1K-LTP is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 800 V
Current - Average Rectified (Io): Must equal or exceed 1 A
Mounting Type: Surface Mount
Package compatibility: DO-214AC (SMA) or equivalent footprint (DO-214BA)

Secondary Compatibility Factors:

Voltage - Forward (Vf) (Max) @ If: Acceptable range 1.0 V to 1.3 V @ 1 A
Current - Reverse Leakage @ Vr: Must not exceed 10 µA @ rated voltage
Operating Temperature - Junction: Must support -55°C minimum and 150°C maximum
Recovery Speed: Standard or Fast recovery acceptable
RoHS3 Compliance: Required for environmental and regulatory compatibility

Substitute parts are grouped into two categories: Direct Package Equivalents (DO-214AC/SMA package) and Alternative Package Equivalents (DO-214BA/GF1 package). Both categories maintain electrical equivalence while offering different physical footprints for manufacturing flexibility.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ 1A [V]	Package	Speed	Ir @ Vr [µA]	Tj (Min-Max) [°C]	Product Status
GS1K-LTP	Micro Commercial Co	800	1	1.0	DO-214AC (SMA)	Standard >500ns	10 @ 800V	-55 to 150	Active
GF1K-E3/67A	Vishay General Semiconductor	800	1	1.2	DO-214BA (GF1)	Standard >500ns	5 @ 800V	-65 to 175	Active
GF1M	onsemi	1000	1	1.2	DO-214AC (SMA)	Standard >500ns	5 @ 1000V	-65 to 175	Not For New Designs
GF1M-E3/5CA	Vishay General Semiconductor	1000	1	1.2	DO-214BA (GF1)	Standard >500ns	5 @ 1000V	-65 to 175	Active
GF1M-E3/67A	Vishay General Semiconductor	1000	1	1.2	DO-214BA (GF1)	Standard >500ns	5 @ 1000V	-65 to 175	Active
MRA4006T3G	onsemi	800	1	1.1	DO-214AC (SMA)	Standard >500ns	10 @ 800V	-55 to 175	Not For New Designs
RGF1K	onsemi	800	1	1.3	DO-214AC (SMA)	Fast ≤500ns	5 @ 800V	-65 to 175	Not For New Designs
RGF1K-E3/67A	Vishay General Semiconductor	800	1	1.3	DO-214BA (GF1)	Fast ≤500ns	5 @ 800V	-65 to 175	Active
RS1K	Fairchild Semiconductor	800	1	1.3	DO-214AC (SMA)	Fast ≤500ns	5 @ 800V	-55 to 150	Active
RS1K-13-F	Diodes Incorporated	800	1	1.3	DO-214AC (SMA)	Fast ≤500ns	5 @ 800V	-65 to 150	Active
RS1K-E3/5AT	Vishay General Semiconductor	800	1	1.3	DO-214AC (SMA)	Fast ≤500ns	5 @ 800V	-55 to 150	Active

Engineering Selection Recommendations

Direct Substitutes (Same Package - DO-214AC/SMA):

The following parts maintain identical package footprint and are electrically compatible with the GS1K-LTP:

MRA4006T3G (onsemi): Matches 800 V / 1 A specifications with standard recovery speed. Product status is Not For New Designs; use only for legacy system maintenance or when existing inventory is depleted.
RS1K (Fairchild Semiconductor): Provides 800 V / 1 A with fast recovery characteristics. Active product status with temperature range -55°C to 150°C matching the GS1K-LTP. Suitable for new designs.
RS1K-13-F (Diodes Incorporated): Delivers 800 V / 1 A with fast recovery. Active product status with extended lower temperature rating (-65°C). Recommended for applications requiring enhanced low-temperature performance.
RS1K-E3/5AT (Vishay General Semiconductor): Provides 800 V / 1 A with fast recovery and lowest junction capacitance (7 pF). Active product status. Suitable for high-frequency switching applications.

Alternative Package Substitutes (DO-214BA/GF1):

These parts provide electrical equivalence with alternative package geometry:

GF1K-E3/67A (Vishay General Semiconductor): Matches 800 V / 1 A specifications in DO-214BA package. Active product status with extended temperature range (-65°C to 175°C). Lower reverse leakage (5 µA vs. 10 µA). Recommended for thermal-demanding applications.
RGF1K-E3/67A (Vishay General Semiconductor): Provides 800 V / 1 A with fast recovery in DO-214BA package. Active product status with extended temperature range. Lower junction capacitance (8.5 pF). Suitable for high-frequency applications requiring alternative package format.

Higher Voltage Alternatives (1000 V Rating):

For applications where higher voltage margin is beneficial:

GF1M-E3/5CA and GF1M-E3/67A (Vishay General Semiconductor): Both rated 1000 V / 1 A with standard recovery. Active product status with extended temperature range (-65°C to 175°C). Provide 200 V additional voltage headroom over the GS1K-LTP.

Compliance and Regulatory Status:

All recommended substitute parts maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with current manufacturing and environmental standards. Parts marked as "Not For New Designs" (GF1M, MRA4006T3G, RGF1K) are suitable only for legacy applications or inventory replacement scenarios.

Frequently Asked Questions (FAQ)

Q: Can I substitute the GS1K-LTP with a higher voltage-rated diode such as GF1M-E3/67A (1000 V)?

A: Yes. The GF1M-E3/67A is electrically compatible with the GS1K-LTP. The 1000 V rating provides additional voltage margin while maintaining the same 1 A current rating and surface mount package type. This substitution is suitable for applications where higher voltage headroom improves circuit reliability.

Q: What is the difference between DO-214AC (SMA) and DO-214BA (GF1) packages?

A: Both are surface mount packages for single diodes with identical electrical performance. The primary difference is physical footprint geometry. DO-214AC (SMA) and DO-214BA (GF1) have different land patterns and dimensions. Verify PCB layout compatibility before substituting between these package types.

Q: Are fast recovery diodes (RGF1K-E3/67A, RS1K-13-F) interchangeable with standard recovery diodes (GF1K-E3/67A)?

A: Yes, for most applications. Fast recovery diodes (≤500 ns) are backward compatible with standard recovery specifications (>500 ns). Fast recovery diodes exhibit lower reverse recovery time and reduced junction capacitance, making them suitable for higher-frequency switching circuits. Standard recovery diodes can be used in applications designed for fast recovery diodes without functional degradation.

Q: What does "Not For New Designs" product status mean?

A: Parts marked "Not For New Designs" (such as GF1M, MRA4006T3G, RGF1K) are still available in inventory and fully functional but are no longer recommended for new circuit designs. These parts may have limited long-term availability or have been superseded by improved alternatives. Use these parts only for legacy system maintenance, repair, or when existing designs are locked to specific part numbers.

Q: Can I use RS1K-E3/5AT in place of GS1K-LTP if my application operates at high frequencies?

A: Yes. The RS1K-E3/5AT offers the lowest junction capacitance (7 pF) among available substitutes, making it optimal for high-frequency switching applications. It maintains 800 V / 1 A ratings with fast recovery characteristics and is Active product status, suitable for new designs.

Q: What is the significance of reverse leakage current (Ir) differences between substitutes?

A: Reverse leakage current affects power dissipation and circuit performance at elevated temperatures. The GS1K-LTP specifies 10 µA @ 800 V, while most substitutes (RS1K series, RGF1K series, GF1K-E3/67A) specify 5 µA. Lower reverse leakage reduces standby power consumption and improves circuit efficiency, particularly in battery-powered or thermally constrained applications.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed in this reference maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, ensuring compatibility with current manufacturing standards and environmental regulations.

Q: What temperature range should I consider when selecting a substitute?

A: The GS1K-LTP operates from -55°C to 150°C. Most substitutes extend this range to -65°C to 175°C, providing enhanced performance margin. If your application requires operation below -55°C or above 150°C, select substitutes with extended temperature ratings such as GF1K-E3/67A, GF1M-E3/5CA, or RGF1K-E3/67A.

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