MURA115T3 Equivalent & Substitute Parts Reference

Part Overview

The MURA115T3 is a general-purpose rectifier diode manufactured by onsemi, rated for 150 V DC reverse voltage and 2 A average rectified current in a surface mount SMA package (DO-214AC). This component is classified as obsolete product status. Due to its obsolete classification, equivalent and substitute parts from active product lines are necessary for ongoing design support, production continuity, and long-term component availability.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	150	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	875 mV @ 1 A	mV
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	2	µA @ 150 V
Speed Classification	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Mounting Type	Surface Mount	—
Package / Case	DO-214AC, SMA	—
Operating Temperature - Junction	-65°C ~ 175°C	°C
Technology	Standard	—

Substitute Part Grouping Explanation

Substitution of the MURA115T3 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): Must equal or exceed 150 V
Current - Average Rectified (Io): Must equal or exceed 2 A
Package / Case: Must be DO-214AC, SMA (surface mount compatibility)
Mounting Type: Must be Surface Mount

Secondary Compatibility Parameters:

Voltage - Forward (Vf) (Max) @ If: Operating point compatibility
Reverse Recovery Time (trr): Speed classification for circuit performance
Operating Temperature - Junction: Thermal operating range
Technology: Standard or equivalent rectifier technology

Substitute parts are grouped into two categories:

Direct Equivalent (Meets all primary criteria): Parts with 150 V reverse voltage rating and 2 A current rating in SMA package.

Functional Equivalent (Meets primary criteria with parameter variations): Parts with 150 V reverse voltage rating and 2 A current rating in SMA package, with acceptable variations in secondary parameters such as forward voltage, recovery time, or leakage current.

Partial Compatibility (Does not meet all primary criteria): Parts listed for reference that do not fully meet the 2 A current requirement or voltage rating, suitable only for applications with reduced current or voltage demands.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	trr [ns]	Ir @ Vr [µA]	Package	Product Status	RoHS Status
MURA115T3	onsemi	150	2	875 @ 1 A	35	2 @ 150 V	DO-214AC, SMA	Obsolete	RoHS non-compliant
MURA115T3G	onsemi	150	1	875 @ 1 A	35	2 @ 150 V	DO-214AC, SMA	Active	ROHS3 Compliant
ES2CA-13-F	Diodes Incorporated	150	2	920 @ 2 A	25	5 @ 150 V	DO-214AC, SMA	Active	ROHS3 Compliant
ESH1C-E3/61T	Vishay General Semiconductor - Diodes Division	150	1	900 @ 1 A	25	1 @ 150 V	DO-214AC, SMA	Active	ROHS3 Compliant
SBR2U150SA-13	Diodes Incorporated	150	2	800 @ 2 A	—	75 @ 150 V	DO-214AC, SMA	Active	ROHS3 Compliant
S1B-13-F	Diodes Incorporated	100	1	1100 @ 1 A	3000	5 @ 100 V	DO-214AC, SMA	Active	ROHS3 Compliant
US1B-13-F	Diodes Incorporated	100	1	1000 @ 1 A	50	5 @ 100 V	DO-214AC, SMA	Active	ROHS3 Compliant
US1J-13-F	Diodes Incorporated	600	1	1700 @ 1 A	75	5 @ 600 V	DO-214AC, SMA	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Equivalent Substitute:

ES2CA-13-F (Diodes Incorporated) is the primary direct equivalent for MURA115T3. This part meets all primary substitution criteria: 150 V reverse voltage rating, 2 A average rectified current, and DO-214AC SMA package. ES2CA-13-F is active product status with ROHS3 compliance, providing long-term availability and regulatory compliance advantages over the obsolete MURA115T3. The forward voltage specification (920 mV @ 2 A) is marginally higher than the original part (875 mV @ 1 A), and reverse recovery time is improved (25 ns vs. 35 ns). Reverse leakage current is slightly elevated (5 µA vs. 2 µA @ 150 V), which remains within acceptable limits for general-purpose rectification applications.

Alternative Equivalent Substitute:

SBR2U150SA-13 (Diodes Incorporated) meets all primary substitution criteria with 150 V reverse voltage, 2 A current rating, and SMA package. This part uses Super Barrier technology and offers superior forward voltage characteristics (800 mV @ 2 A), reducing power dissipation compared to MURA115T3. SBR2U150SA-13 is active product status with ROHS3 compliance. The elevated reverse leakage current (75 µA @ 150 V) is a trade-off inherent to Super Barrier technology and is acceptable for most general-purpose rectification circuits. This option is preferred for applications prioritizing low forward voltage drop and heat dissipation.

Reduced Current Alternatives:

MURA115T3G (onsemi) and ESH1C-E3/61T (Vishay) are active product alternatives rated for 1 A current, half the original 2 A specification. These parts are suitable only for applications where the circuit current demand does not exceed 1 A. Both maintain 150 V reverse voltage rating and SMA package compatibility. MURA115T3G provides direct onsemi product line continuity with improved RoHS compliance. ESH1C-E3/61T offers Vishay sourcing with enhanced reverse leakage performance (1 µA @ 150 V).

Non-Equivalent Parts (Reference Only):

US1B-13-F, US1J-13-F, and S1B-13-F do not meet the primary 150 V / 2 A substitution criteria and are listed for reference only. These parts have reduced voltage ratings (100 V or 600 V) or reduced current ratings (1 A), making them unsuitable as direct replacements for MURA115T3 in applications requiring the full 150 V / 2 A specification.

Frequently Asked Questions (FAQ)

Q: Can MURA115T3G be used as a direct replacement for MURA115T3?

A: MURA115T3G is not a direct replacement due to reduced current rating (1 A vs. 2 A). It is suitable only for applications where circuit current does not exceed 1 A. Both parts share the same 150 V reverse voltage rating and SMA package. MURA115T3G offers the advantage of active product status and ROHS3 compliance.

Q: What is the difference between ES2CA-13-F and SBR2U150SA-13?

A: Both parts meet the 150 V / 2 A specification and SMA package requirement. ES2CA-13-F uses standard rectifier technology with forward voltage of 920 mV @ 2 A. SBR2U150SA-13 uses Super Barrier technology with lower forward voltage (800 mV @ 2 A), reducing power dissipation. SBR2U150SA-13 has higher reverse leakage current (75 µA vs. 5 µA @ 150 V). Selection depends on whether low forward voltage or low leakage current is prioritized for the application.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed (ES2CA-13-F, ESH1C-E3/61T, SBR2U150SA-13, MURA115T3G, US1B-13-F, US1J-13-F, S1B-13-F) are ROHS3 compliant. The original MURA115T3 is RoHS non-compliant. Substitution with any active product alternative provides regulatory compliance improvement.

Q: Can US1J-13-F be used if the application only requires 150 V operation?

A: US1J-13-F has a 600 V reverse voltage rating and 1 A current rating. While the 600 V rating exceeds the 150 V requirement, the 1 A current rating is insufficient for applications requiring 2 A. US1J-13-F is not suitable as a replacement for MURA115T3 in 2 A applications.

Q: What is the impact of higher reverse leakage current in SBR2U150SA-13?

A: SBR2U150SA-13 has reverse leakage current of 75 µA @ 150 V compared to MURA115T3 at 2 µA @ 150 V. This elevated leakage is characteristic of Super Barrier rectifier technology. For most general-purpose rectification applications, this leakage level is acceptable. Applications with stringent leakage requirements (such as precision analog circuits or high-impedance sensing) should select ES2CA-13-F or ESH1C-E3/61T instead.

Q: Are all substitute parts available in the same packaging format?

A: All substitute parts listed use DO-214AC (SMA) surface mount package, matching the original MURA115T3 package. Packaging variations exist in tape format (Cut Tape & Digi-Reel® vs. Tape & Reel), but the physical component package remains identical, ensuring PCB footprint compatibility.

Q: What is the minimum reverse voltage rating acceptable for MURA115T3 substitution?

A: The minimum acceptable reverse voltage rating is 150 V to match the original MURA115T3 specification. Parts with lower voltage ratings (such as 100 V) do not meet the primary substitution criteria and are unsuitable for direct replacement.

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