MUR140-TP Equivalent & Substitute Parts

Part Overview

The MUR140-TP is a general-purpose rectifier diode rated for 400 V DC reverse voltage and 1 A average rectified current in a through-hole DO-41 package. Manufactured by Micro Commercial Co, this component is classified as obsolete. Due to its obsolete status, equivalent and substitute parts from active product lines are necessary for ongoing design support, production continuity, and system maintenance applications.

Key Parameters

Parameter	Value
Voltage - DC Reverse (Vr) (Max)	400 V
Current - Average Rectified (Io)	1 A
Voltage - Forward (Vf) (Max) @ If	1.35 V @ 1 A
Reverse Recovery Time (trr)	60 ns
Current - Reverse Leakage @ Vr	5 µA @ 400 V
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-50°C ~ 150°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the MUR140-TP is determined by the following critical parameters:

Mandatory Matching Parameters:

Voltage - DC Reverse (Vr) (Max): 400 V
Current - Average Rectified (Io): 1 A
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, or Axial variants
RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

Voltage - Forward (Vf): Substitute parts may have lower forward voltage drop
Reverse Recovery Time (trr): Substitute parts may have faster recovery characteristics
Current - Reverse Leakage: Substitute parts may have lower leakage current
Operating Temperature Range: Substitute parts may have extended temperature ranges
Product Status: Active products are preferred over obsolete status

All substitute parts listed meet the mandatory electrical and mechanical requirements for direct replacement in applications designed for the MUR140-TP.

Parameter Comparison

Parameter	MUR140-TP	MUR140GP-TP	1N3612GP-E3/54	1N4936GHA0G	GP10-4004E-E3/54	GP10G-4004HE3/73
Manufacturer	Micro Commercial Co	Micro Commercial Co	Vishay General Semiconductor	Taiwan Semiconductor Corporation	Vishay General Semiconductor	Vishay General Semiconductor
Voltage - DC Reverse (Vr) (Max)	400 V	400 V	400 V	400 V	400 V	400 V
Current - Average Rectified (Io)	1 A	1 A	1 A	1 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1.35 V @ 1 A	1.35 V @ 1 A	1 V @ 1 A	1.2 V @ 1 A	Not Specified	Not Specified
Reverse Recovery Time (trr)	60 ns	45 ns	2 µs	200 ns	Not Specified	Not Specified
Current - Reverse Leakage @ Vr	5 µA @ 400 V	5 µA @ 400 V	1 µA @ 400 V	5 µA @ 400 V	Not Specified	Not Specified
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial
Operating Temperature - Junction	-50°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 175°C	-55°C ~ 150°C	Not Specified	Not Specified
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: MUR140GP-TP

The MUR140GP-TP is the direct equivalent from Micro Commercial Co with active product status. This part maintains identical electrical specifications to the MUR140-TP while offering improved reverse recovery time (45 ns versus 60 ns) and extended lower operating temperature limit (-65°C versus -50°C). The MUR140GP-TP is available in Tape & Reel packaging and is ROHS3 compliant. This is the preferred substitute for direct replacement applications.

Secondary Substitutes: 1N3612GP-E3/54 and GP10-4004E-E3/54

Both Vishay General Semiconductor parts meet the mandatory electrical and mechanical requirements. The 1N3612GP-E3/54 offers superior forward voltage characteristics (1 V @ 1 A) and extended operating temperature range (-65°C ~ 175°C). The GP10-4004E-E3/54 provides standard recovery characteristics with active product status. Both are ROHS3 compliant and available in Tape & Reel packaging.

Tertiary Substitute: 1N4936GHA0G

The Taiwan Semiconductor Corporation 1N4936GHA0G meets all mandatory electrical and mechanical parameters with fast recovery characteristics (200 ns). This part includes AEC-Q101 automotive qualification and is suitable for applications requiring automotive-grade components. Operating temperature range is -55°C ~ 150°C with ROHS3 compliance.

Alternative: GP10G-4004HE3/73

The Vishay General Semiconductor GP10G-4004HE3/73 is a SUPERECTIFIER® series component meeting all mandatory requirements with active product status and ROHS3 compliance. This part is suitable for applications where standard recovery characteristics are acceptable.

All listed substitutes are electrically and mechanically compatible with the MUR140-TP for applications operating within the specified parameter ranges.

Frequently Asked Questions (FAQ)

Q: Can MUR140GP-TP directly replace MUR140-TP in existing designs?

A: Yes. The MUR140GP-TP is a direct equivalent with identical voltage and current ratings, through-hole mounting, and DO-41 package configuration. The improved reverse recovery time and extended temperature range provide enhanced performance characteristics.

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

A: Fast recovery diodes (MUR140-TP, MUR140GP-TP, 1N4936GHA0G) have reverse recovery times ≤ 500 ns, suitable for high-frequency switching applications. Standard recovery diodes (1N3612GP-E3/54, GP10-4004E-E3/54, GP10G-4004HE3/73) have recovery times > 500 ns, appropriate for lower-frequency rectification circuits. Selection depends on circuit operating frequency requirements.

Q: Are all substitutes available in the same packaging format?

A: All substitutes are through-hole mounted in DO-204AL or DO-41 axial packages. Packaging variants include bulk and Tape & Reel formats. Verify specific packaging availability with your supplier for procurement requirements.

Q: What is the significance of the forward voltage difference between MUR140-TP and 1N3612GP-E3/54?

A: The 1N3612GP-E3/54 has a lower forward voltage drop (1 V @ 1 A versus 1.35 V @ 1 A). This results in reduced power dissipation and heat generation in the diode. For applications sensitive to voltage drop or thermal performance, the lower forward voltage characteristic is beneficial.

Q: Is the 1N4936GHA0G suitable for automotive applications?

A: Yes. The 1N4936GHA0G carries AEC-Q101 automotive qualification, making it suitable for automotive-grade applications. The MUR140-TP and other substitutes do not carry automotive qualification and should not be used in applications requiring AEC-Q101 compliance.

Q: What is the impact of operating temperature range differences?

A: The MUR140-TP operates from -50°C to 150°C. Substitutes with extended ranges (such as 1N3612GP-E3/54 at -65°C to 175°C) provide greater flexibility for applications in extreme temperature environments. Verify that your application requirements fall within the selected substitute's temperature range.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitutes are ROHS3 compliant, matching the compliance status of the MUR140-TP. This ensures compatibility with RoHS3 regulated supply chains and end-use applications.

Q: Can I use GP10-4004E-E3/54 or GP10G-4004HE3/73 if detailed specifications are not fully provided?

A: These Vishay parts meet all mandatory electrical and mechanical parameters (400 V, 1 A, through-hole, DO-41 package, ROHS3 compliant). However, incomplete specification data for forward voltage and operating temperature range limits their use to applications where these parameters are non-critical or where standard recovery characteristics are acceptable.

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