ER1D-TP Equivalent & Substitute Parts

Part Overview

The ER1D-TP is a general-purpose fast recovery rectifier diode manufactured by Micro Commercial Co, rated for 200 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AA (SMB) package. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

ER1D-TP

Micro Commercial CoIn Stock: 3422ER1D-TP Datasheet

Current PartRFQ

ER1D-LTP

Micro Commercial CoIn Stock: 4629ER1D-LTP Datasheet

DirectRFQ

MURS120T3G

onsemiIn Stock: 340439MURS120T3G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ER1D-TP are qualified based on the following electrical and mechanical parameters:

Mandatory Matching Parameters:

• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 1 A
• Package / Case: DO-214AA, SMB
• Mounting Type: Surface Mount
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Allowable Parameter Variations:

• Reverse Recovery Time (trr): May be equal to or faster than the original specification
• Current - Reverse Leakage @ Vr: May be equal to or lower than the original specification
• Operating Temperature - Junction: May extend beyond the original range
• Voltage - Forward (Vf): Variations within typical rectifier diode tolerances
• Product Status: Active alternatives are preferred for obsolete parts

Parameter Comparison

Engineering Selection Recommendations

ER1D-LTP (Micro Commercial Co)

The ER1D-LTP is a direct manufacturer equivalent from Micro Commercial Co, sharing the same base product number (ER1D) as the obsolete ER1D-TP. This part maintains identical electrical ratings for voltage and current while offering improved reverse recovery time (35 ns versus 50 ns) and an extended operating temperature range (-65°C ~ 175°C versus -50°C ~ 150°C). The ER1D-LTP is active in production status and ROHS3 compliant. Packaging is supplied as Tape & Reel (TR), suitable for automated assembly processes.

MURS120T3G (onsemi)

The MURS120T3G is an active cross-manufacturer substitute from onsemi, meeting all mandatory electrical and mechanical parameters. This part delivers superior performance characteristics including faster reverse recovery time (35 ns) and lower reverse leakage current (2 µA @ 200 V versus 5 µA @ 200 V). The MURS120T3G features a lower forward voltage drop (875 mV @ 1 A versus 950 mV @ 1 A on the ER1D-LTP), resulting in reduced power dissipation. Extended operating temperature range (-65°C ~ 175°C) and ROHS3 compliance are maintained. Packaging is supplied as Cut Tape (CT) & Digi-Reel®, compatible with standard component handling equipment.

Both substitute parts are suitable for direct replacement in applications where the ER1D-TP is specified, with the selection between ER1D-LTP and MURS120T3G determined by packaging requirements, supplier availability, and procurement preferences.

Frequently Asked Questions (FAQ)

Q: Can the ER1D-LTP directly replace the ER1D-TP in existing designs?

A: Yes. The ER1D-LTP maintains identical voltage and current ratings (200 V, 1 A) and uses the same DO-214AA SMB package. The improved reverse recovery time (35 ns versus 50 ns) and extended temperature range represent performance enhancements with no negative impact on circuit compatibility.

Q: What are the differences between ER1D-LTP and MURS120T3G?

A: Both parts meet the core electrical specifications (200 V, 1 A, DO-214AA SMB package). Key differences include manufacturer (Micro Commercial Co versus onsemi), forward voltage drop (950 mV versus 875 mV @ 1 A), reverse leakage current (5 µA versus 2 µA @ 200 V), and packaging format (Tape & Reel versus Cut Tape & Digi-Reel®). The MURS120T3G offers lower power dissipation due to reduced forward voltage.

Q: Are there packaging compatibility concerns when substituting these parts?

A: All three parts use the DO-214AA SMB surface mount package with identical mechanical dimensions and land patterns. The ER1D-LTP is supplied in Tape & Reel format, while the MURS120T3G is supplied in Cut Tape & Digi-Reel® format. Both packaging formats are compatible with standard pick-and-place assembly equipment.

Q: Does the improved reverse recovery time of the substitute parts affect circuit operation?

A: The faster reverse recovery time (35 ns on both substitutes versus 50 ns on the original) represents an improvement that reduces switching losses and improves efficiency. This change is transparent to circuit operation and does not require design modifications.

Q: Are all substitute parts RoHS compliant?

A: Yes. The ER1D-TP, ER1D-LTP, and MURS120T3G are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited), meeting environmental and regulatory requirements for commercial and industrial applications.

Q: What is the inventory status of these substitute parts?

A: The ER1D-TP (obsolete) has 3,400 pieces in stock. The ER1D-LTP (active) has 4,619 pieces in stock. The MURS120T3G (active) has 340,400 pieces in stock, providing the highest availability for new procurement.