FS1GE-TP Equivalent & Substitute Parts

Part Overview

The FS1GE-TP is a general-purpose rectifier diode manufactured by Micro Commercial Co, rated for 400 V DC reverse voltage and 1 A average rectified current in a surface mount SMAE package. This component is classified as obsolete, indicating discontinuation from the manufacturer. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this rectifier diode.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	400	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3 @ 1 A	V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 400 V
Mounting Type	Surface Mount	—
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-50 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the FS1GE-TP is determined by strict equivalence of electrical and mechanical parameters. The following criteria establish substitutability:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 1 A
Voltage - Forward (Vf) (Max) @ If: 1.3 V @ 1 A
Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
Reverse Recovery Time (trr): 150 ns
Current - Reverse Leakage @ Vr: 5 µA @ 400 V
Mounting Type: Surface Mount
Package / Case: DO-214AC, SMA

Substitution Categories:

Direct Equivalents maintain all primary electrical parameters and package specifications. These parts are functionally interchangeable with the FS1GE-TP.

Upgrade Alternatives meet or exceed all primary electrical parameters while offering enhanced specifications such as extended temperature ranges or improved capacitance characteristics. These parts provide superior performance in the same package footprint.

Similar Alternatives satisfy the core voltage, current, and mounting requirements but may exhibit variations in secondary parameters such as reverse recovery time, forward voltage at different current levels, or reverse leakage current. These parts require design verification for specific application requirements.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) [V]	Speed	trr [ns]	Ir @ Vr [µA]	Package	Product Status
FS1GE-TP	Micro Commercial Co	400	1	1.3 @ 1A	Fast Recovery ≤ 500ns	150	5 @ 400V	DO-214AC, SMA	Obsolete
FS1G-LTP	Micro Commercial Co	400	1	1.3 @ 1A	Fast Recovery ≤ 500ns	150	5 @ 400V	DO-214AC, SMA	Active
RS1G-13-F	Diodes Incorporated	400	1	1.3 @ 1A	Fast Recovery ≤ 500ns	150	5 @ 400V	DO-214AC, SMA	Active
RS1G-E3/5AT	Vishay General Semiconductor - Diodes Division	400	1	1.3 @ 1A	Fast Recovery ≤ 500ns	150	5 @ 400V	DO-214AC, SMA	Active
RS1G-E3/61T	Vishay General Semiconductor - Diodes Division	400	1	1.3 @ 1A	Fast Recovery ≤ 500ns	150	5 @ 400V	DO-214AC, SMA	Active
CFRA104-G	Comchip Technology	400	1	1.3 @ 1A	Fast Recovery ≤ 500ns	150	5 @ 400V	DO-214AC, SMA	Active
RGF1G	onsemi	400	1	1.3 @ 1A	Fast Recovery ≤ 500ns	150	5 @ 400V	DO-214AC, SMA	Not For New Designs
RS1G	Taiwan Semiconductor Corporation	400	1	1.3 @ 1A	Fast Recovery ≤ 500ns	150	5 @ 400V	DO-214AC, SMA	Active
1SR156-400TE25	Rohm Semiconductor	400	1	1.3 @ 800mA	Fast Recovery ≤ 500ns	400	10 @ 400V	DO-214AC, SMA	Not For New Designs
CGRA4004-G	Comchip Technology	400	1	1.1 @ 1A	Standard Recovery >500ns	—	5 @ 400V	DO-214AC, SMA	Active
CSFA104-G	Comchip Technology	400	1	1.25 @ 1A	Fast Recovery ≤ 500ns	35	5 @ 400V	DO-214AC, SMA	Active

Engineering Selection Recommendations

Direct Equivalent Selection:

FS1G-LTP (Micro Commercial Co) is the primary direct equivalent. This part maintains active product status and identical electrical specifications to the FS1GE-TP. The transition from FS1GE-TP to FS1G-LTP represents a packaging format change from cut tape to tape and reel, with no functional performance degradation.

RS1G-13-F (Diodes Incorporated), RS1G-E3/5AT (Vishay), and RS1G-E3/61T (Vishay) are direct electrical equivalents with active product status. These parts satisfy all primary substitution criteria and are suitable for new designs.

RS1G (Taiwan Semiconductor Corporation) provides direct equivalence with active product status and established supply availability.

Upgrade Alternative Selection:

CFRA104-G (Comchip Technology) meets all primary electrical parameters with active product status, supporting continued design implementation.

CSFA104-G (Comchip Technology) offers enhanced performance through reduced reverse recovery time (35 ns versus 150 ns) while maintaining all primary electrical specifications. This part is suitable for applications requiring improved switching characteristics.

Restricted Selection:

RGF1G (onsemi) carries "Not For New Designs" status and is not recommended for new product development, although it remains available for legacy system support.

1SR156-400TE25 (Rohm Semiconductor) carries "Not For New Designs" status. This part exhibits extended reverse recovery time (400 ns) and elevated reverse leakage current (10 µA), making it unsuitable for direct substitution in applications sensitive to these parameters.

Alternative Technology Selection:

CGRA4004-G (Comchip Technology) operates with standard recovery characteristics (>500 ns) and reduced forward voltage (1.1 V @ 1 A). This part is suitable only for applications where fast recovery performance is not required and where the lower forward voltage provides design advantage.

Frequently Asked Questions (FAQ)

Q: Can FS1G-LTP directly replace FS1GE-TP in existing designs?

A: Yes. FS1G-LTP maintains identical electrical specifications (400 V, 1 A, 1.3 V forward voltage, 150 ns recovery time) and package footprint (DO-214AC, SMA). The primary difference is packaging format (tape and reel versus cut tape), which does not affect circuit performance.

Q: What is the difference between fast recovery and standard recovery diodes?

A: Fast recovery diodes exhibit reverse recovery time ≤ 500 ns, enabling faster switching transitions and reduced switching losses. Standard recovery diodes exceed 500 ns recovery time. The FS1GE-TP specifies 150 ns recovery time, classifying it as fast recovery. Substitutes must maintain this specification for equivalent performance in switching applications.

Q: Why is 1SR156-400TE25 listed as a similar alternative rather than a direct equivalent?

A: 1SR156-400TE25 exhibits two parameter deviations: reverse recovery time of 400 ns (versus 150 ns specification) and reverse leakage current of 10 µA (versus 5 µA specification). These differences may impact performance in applications sensitive to switching speed or leakage current. Design verification is required before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 Compliant status, matching the FS1GE-TP compliance level. All parts are also REACH Unaffected and classified under ECCN EAR99.

Q: What is the significance of the DO-214AC package designation?

A: DO-214AC is the industry standard package designation for surface mount rectifier diodes in the SMA form factor. All listed substitute parts utilize this package, ensuring mechanical and thermal compatibility with existing PCB layouts and assembly processes.

Q: Can CGRA4004-G replace FS1GE-TP in all applications?

A: No. CGRA4004-G operates with standard recovery characteristics (>500 ns) rather than fast recovery (≤ 500 ns). This part is suitable only for applications where fast switching performance is not required. Applications dependent on fast recovery performance require selection from fast recovery alternatives.

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

A: "Not For New Designs" indicates that the manufacturer has discontinued active development and support for the part. While inventory may remain available, these parts are not recommended for new product development. RGF1G and 1SR156-400TE25 carry this status and should be reserved for legacy system support only.

Q: How does operating temperature range affect part selection?

A: The FS1GE-TP specifies -50°C to 150°C junction temperature range. Most substitute parts specify -55°C to 150°C or -65°C to 175°C, providing equal or extended temperature coverage. Temperature range differences do not restrict substitution for applications operating within the FS1GE-TP specified range.

Q: What is the Moisture Sensitivity Level (MSL) significance?

A: MSL 1 (Unlimited) indicates that the component has unlimited shelf life and requires no special moisture control during storage or handling. All listed substitute parts carry MSL 1 rating, eliminating moisture sensitivity as a substitution constraint.

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