FS1DE-TP Equivalent & Substitute Parts

Part Overview

The FS1DE-TP 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 surface mount SMAE package. This part is classified as Obsolete, making identification of equivalent and substitute components essential for ongoing production support and design continuity. The FS1DE-TP serves in applications requiring fast recovery rectification with moderate voltage and current ratings, commonly found in power supply circuits, converter stages, and general-purpose rectification applications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	1.3	V @ 1 A
Reverse Recovery Time (trr)	150	ns
Current - Reverse Leakage @ Vr	5	µA @ 200 V
Capacitance @ Vr, F	15	pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-50°C ~ 150°C	—
Technology	Standard	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the FS1DE-TP is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 200 V
Current - Average Rectified (Io): 1 A
Mounting Type: Surface Mount
Package / Case: DO-214AC, SMA (or compatible SMAE variant)
Technology: Standard (fast recovery rectifier)

Allowable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: Substitutes may vary within the range of 920 mV to 1.3 V at 1 A
Reverse Recovery Time (trr): Substitutes must maintain fast recovery characteristics (≤ 500 ns for > 200 mA)
Current - Reverse Leakage @ Vr: Substitutes must not exceed 5 µA @ 200 V
Capacitance @ Vr, F: Substitutes may range from 10 pF to 50 pF @ 4V, 1MHz
Operating Temperature - Junction: Substitutes must support minimum -50°C and maximum 150°C

Compliance Requirements:

RoHS3 Compliant status required
REACH Unaffected status required

Parameter Comparison

Parameter	FS1DE-TP (Main)	FS1D-LTP (Direct)	ES1D-M3/5AT (Similar)
Manufacturer	Micro Commercial Co	Micro Commercial Co	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V
Current - Average Rectified (Io)	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.3 V @ 1 A	1.3 V @ 1 A	920 mV @ 1 A
Reverse Recovery Time (trr)	150 ns	150 ns	25 ns
Current - Reverse Leakage @ Vr	5 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V
Capacitance @ Vr, F	15 pF @ 4V, 1MHz	50 pF @ 4V, 1MHz	10 pF @ 4V, 1MHz
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Operating Temperature - Junction	-50°C ~ 150°C	-50°C ~ 150°C	-55°C ~ 150°C
Product Status	Obsolete	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	—	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

FS1D-LTP (Direct Substitute - Micro Commercial Co)

The FS1D-LTP is a direct substitute from the same manufacturer base product family (FS1D). It maintains identical electrical ratings for voltage, current, forward voltage drop, reverse leakage, and operating temperature range. The primary difference is packaging designation (DO-214AC vs. SMAE) and capacitance specification (50 pF vs. 15 pF). Both are surface mount variants in the same physical form factor. The FS1D-LTP carries ROHS3 compliance and MSL 1 rating. Product status is "Not For New Designs," indicating limited future availability. This substitute is suitable for direct replacement in existing production where the same manufacturer lineage is preferred.

ES1D-M3/5AT (Parametric Equivalent - Vishay General Semiconductor)

The ES1D-M3/5AT is a parametric equivalent from Vishay General Semiconductor that meets all mandatory electrical specifications: 200 V reverse voltage, 1 A average rectified current, and surface mount DO-214AC package. This part demonstrates superior performance characteristics with lower forward voltage drop (920 mV vs. 1.3 V at 1 A), faster reverse recovery time (25 ns vs. 150 ns), and lower junction capacitance (10 pF vs. 15 pF). The ES1D-M3/5AT carries Active product status, ensuring long-term availability and supply continuity. Operating temperature range extends to -55°C minimum. ROHS3 compliance and MSL 1 rating are confirmed. This substitute is recommended for new designs and ongoing production requiring assured component availability.

Compliance and Regulatory Status

All identified substitutes maintain ROHS3 Compliant status and REACH Unaffected designation, matching the regulatory posture of the original FS1DE-TP. ECCN classification (EAR99) and HTSUS code (8541.10.0080) remain consistent across all parts.

Frequently Asked Questions (FAQ)

Q: Can FS1D-LTP directly replace FS1DE-TP in existing designs?

A: Yes. The FS1D-LTP maintains identical voltage (200 V), current (1 A), forward voltage drop (1.3 V @ 1 A), reverse leakage (5 µA @ 200 V), and operating temperature range (-50°C ~ 150°C). Both are surface mount components in DO-214AC/SMA package family. The capacitance difference (50 pF vs. 15 pF) may require circuit evaluation in high-frequency applications, but electrical performance is equivalent for standard rectification applications.

Q: What are the advantages of ES1D-M3/5AT over the original FS1DE-TP?

A: The ES1D-M3/5AT offers three performance improvements: lower forward voltage drop (920 mV vs. 1.3 V at 1 A), resulting in reduced power dissipation; faster reverse recovery time (25 ns vs. 150 ns), enabling higher switching frequency operation; and lower junction capacitance (10 pF vs. 15 pF), reducing parasitic effects in high-frequency circuits. Additionally, ES1D-M3/5AT carries Active product status, ensuring long-term availability.

Q: Are all substitutes compatible with the same PCB footprint?

A: Yes. All identified substitutes use the DO-214AC (SMA) surface mount package, which maintains identical physical dimensions and land pattern. The FS1DE-TP SMAE designation and FS1D-LTP DO-214AC designation refer to the same physical package form factor, ensuring direct PCB compatibility.

Q: What is the significance of "Product Status: Obsolete" for FS1DE-TP?

A: Obsolete status indicates the part is no longer manufactured and existing inventory is limited. The FS1DE-TP shows 868 pieces in stock. For designs requiring long-term production support or future redesigns, migration to an Active status part such as ES1D-M3/5AT is recommended to ensure supply chain continuity.

Q: How do reverse recovery time differences affect circuit performance?

A: Reverse recovery time (trr) determines how quickly the diode transitions from conducting to blocking state. The FS1DE-TP and FS1D-LTP both specify 150 ns, while ES1D-M3/5AT specifies 25 ns. Faster recovery (lower trr) reduces switching losses and enables operation at higher switching frequencies. In low-frequency rectification applications (< 100 kHz), the difference is negligible. In high-frequency switching applications (> 500 kHz), the ES1D-M3/5AT provides superior performance.

Q: Are there moisture sensitivity concerns with these parts?

A: FS1D-LTP and ES1D-M3/5AT both carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard PCB assembly and storage practices apply. The FS1DE-TP does not specify MSL rating but, as a standard surface mount diode, typically follows MSL 1 classification.

Q: Can ES1D-M3/5AT be used in designs originally specified for FS1DE-TP?

A: Yes, with circuit evaluation. The ES1D-M3/5AT meets all mandatory electrical specifications and maintains package compatibility. The lower forward voltage drop (920 mV vs. 1.3 V) reduces power dissipation, which is beneficial. The faster reverse recovery time (25 ns vs. 150 ns) and lower capacitance (10 pF vs. 15 pF) may require verification in circuits with tight timing or frequency-dependent characteristics, but these changes are generally favorable for rectifier performance.

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