US1DE-TP Equivalent & Substitute Parts

Part Overview

The US1DE-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 necessary for ongoing design support and procurement continuity. The part operates across a junction temperature range of -50°C to 150°C and features fast recovery characteristics with a reverse recovery time of 50 ns. Substitute parts must maintain electrical equivalence across voltage, current, and thermal specifications while accommodating available packaging options.

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)	50	ns
Current - Reverse Leakage @ Vr	10	µA @ 200 V
Mounting Type	Surface Mount	-
Package / Case	DO-214AC, SMA	-
Operating Temperature - Junction	-50°C ~ 150°C	-
Product Status	Obsolete	-

Substitute Part Grouping Explanation

Substitute parts for the US1DE-TP are grouped based on electrical parameter equivalence and physical compatibility. The primary substitution criteria are:

Electrical Parameters:

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

Compliance Parameters:

RoHS Status: ROHS3 Compliant
Technology: Standard

Parts meeting all electrical parameters and compliance requirements are classified as direct substitutes. Parts with improved performance characteristics (lower reverse recovery time, lower reverse leakage current) while maintaining or exceeding the minimum electrical specifications are classified as parametric equivalents. Package availability and product status are secondary considerations for procurement planning.

Parameter Comparison

Parameter	US1DE-TP (Main)	US1D-TP	ER1D	ER1D-AQ	US1D
Manufacturer	Micro Commercial Co	Micro Commercial Co	Diotec Semiconductor	Diotec Semiconductor	SMC Diode Solutions
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V	200 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 1 A	1 V @ 1 A	1 V @ 1 A	1 V @ 1 A	Not specified
Reverse Recovery Time (trr)	50 ns	50 ns	35 ns	35 ns	Not specified
Current - Reverse Leakage @ Vr	10 µA @ 200 V	10 µA @ 200 V	5 µA @ 200 V	5 µA @ 200 V	Not specified
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA	SMA
Operating Temperature - Junction	-50°C ~ 150°C	-65°C ~ 175°C	-50°C ~ 150°C	-50°C ~ 150°C	Not specified
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not applicable	ROHS3 Compliant

Engineering Selection Recommendations

Direct Substitute - US1D-TP (Micro Commercial Co)

The US1D-TP is the direct successor to the US1DE-TP from the same manufacturer. It maintains identical electrical specifications (200 V, 1 A, 50 ns reverse recovery time, 10 µA reverse leakage) and package compatibility (DO-214AC, SMA). The US1D-TP is currently in active production status with 3400 pieces in stock. The operating temperature range is extended to -65°C ~ 175°C, providing improved thermal margin. ROHS3 compliance is maintained. This part is the primary recommendation for direct replacement.

Parametric Equivalent - ER1D (Diotec Semiconductor)

The ER1D meets all electrical requirements with improved performance characteristics. It maintains 200 V reverse voltage and 1 A current ratings with identical forward voltage specifications. The reverse recovery time is reduced to 35 ns (15 ns improvement over the main part), and reverse leakage current is reduced to 5 µA (50% reduction). The ER1D is in active production with 18144 pieces in stock. Operating temperature range matches the main part (-50°C ~ 150°C). ROHS3 compliance is maintained. This part is suitable for applications where improved switching performance is beneficial.

Parametric Equivalent - ER1D-AQ (Diotec Semiconductor)

The ER1D-AQ is an automotive-qualified variant (AEC-Q101) with identical electrical specifications to the ER1D. It features 35 ns reverse recovery time and 5 µA reverse leakage current. The ER1D-AQ is supplied in Tape & Reel packaging with 601094 pieces in stock. Operating temperature range is -50°C ~ 150°C. This part is specified for automotive applications requiring AEC-Q101 qualification. RoHS status is not applicable for this variant.

Parametric Equivalent - US1D (SMC Diode Solutions)

The US1D is available from SMC Diode Solutions in Cut Tape and Digi-Reel packaging options. It maintains 200 V and 1 A ratings with ultra-fast recovery characteristics. The part is in active production with 41300 pieces in stock. ROHS3 compliance and REACH affected status are documented. Detailed electrical specifications for forward voltage and reverse recovery time are not provided in the available data.

Frequently Asked Questions (FAQ)

Q: Can US1D-TP be used as a direct replacement for US1DE-TP?

A: Yes. The US1D-TP is electrically equivalent to the US1DE-TP with identical voltage (200 V), current (1 A), forward voltage (1 V @ 1 A), and reverse recovery time (50 ns) specifications. Both use DO-214AC (SMA) surface mount packaging. The US1D-TP is in active production, whereas the US1DE-TP is obsolete.

Q: What is the difference between ER1D and ER1D-AQ?

A: Both parts share identical electrical specifications (200 V, 1 A, 35 ns reverse recovery time, 5 µA reverse leakage). The ER1D-AQ is automotive-qualified to AEC-Q101 standard and is supplied in Tape & Reel packaging. The ER1D packaging type is not specified. Selection depends on automotive qualification requirements.

Q: Are all substitute parts compatible with the original US1DE-TP PCB layout?

A: All substitute parts use DO-214AC (SMA) surface mount packaging, which is mechanically compatible with the original SMAE package footprint. PCB layout compatibility should be verified for specific design implementations.

Q: What is the advantage of using ER1D or ER1D-AQ over US1D-TP?

A: The ER1D and ER1D-AQ feature improved reverse recovery time (35 ns versus 50 ns) and reduced reverse leakage current (5 µA versus 10 µA). These improvements result in faster switching performance and lower leakage current, beneficial for high-frequency applications and low-power standby conditions.

Q: Which substitute part has the highest inventory availability?

A: The ER1D-AQ has the highest inventory with 601094 pieces in stock, followed by US1D with 41300 pieces, ER1D with 18144 pieces, and US1D-TP with 3400 pieces.

Q: Are all substitute parts RoHS compliant?

A: US1D-TP, ER1D, and US1D are ROHS3 compliant. The ER1D-AQ has RoHS status listed as not applicable due to its automotive qualification classification.

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

A: US1DE-TP and ER1D and ER1D-AQ operate across -50°C to 150°C. US1D-TP has an extended range of -65°C to 175°C. US1D operating temperature specifications are not provided.

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