MUR110 Equivalent & Substitute Parts

Part Overview

The MUR110 is a general-purpose rectifier diode rated for 100 V DC reverse voltage and 1 A average rectified current, manufactured by onsemi in the SWITCHMODE™ series. This component features fast recovery characteristics with a reverse recovery time of 35 ns and is housed in a DO-204AL (DO-41) axial through-hole package.

The MUR110 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and legacy system support. Direct replacements and functionally equivalent alternatives are available from multiple manufacturers with active product status and current RoHS compliance certifications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	100	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	875 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	2	µA @ 100 V
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—
Operating Temperature - Junction	-65°C ~ 175°C	°C

Substitute Part Grouping Explanation

Substitution of the MUR110 is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 100 V
Current - Average Rectified (Io): 1 A (or higher)
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, or Axial compatible
Technology: Standard rectifier diode

Performance Characteristics:

Forward voltage drop (Vf) at rated current
Reverse recovery time (trr) and speed classification
Reverse leakage current (Ir) at rated voltage
Operating temperature range

Substitute parts are grouped into two categories:

Category 1: Direct Equivalents (Identical Electrical and Mechanical Specifications) Parts that match all critical parameters and are pin-compatible replacements with identical performance characteristics.

Category 2: Functional Equivalents (Compatible Electrical Performance with Minor Parameter Variations) Parts that meet or exceed the voltage and current ratings, maintain through-hole axial packaging, but may exhibit variations in forward voltage, recovery time, or leakage current within acceptable engineering tolerances for general-purpose rectification applications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Speed	trr [ns]	Ir @ Vr [µA]	Package	Product Status	RoHS Status
MUR110	onsemi	100	1	875 @ 1 A	Fast Recovery ≤ 500ns	35	2 @ 100 V	DO-204AL, DO-41, Axial	Obsolete	RoHS non-compliant
MUR110G	onsemi	100	1	875 @ 1 A	Fast Recovery ≤ 500ns	35	2 @ 100 V	DO-204AL, DO-41, Axial	Active	ROHS3 Compliant
1N4002G	Taiwan Semiconductor Corporation	100	1	1000 @ 1 A	Standard Recovery >500ns	—	5 @ 100 V	DO-204AL, DO-41, Axial	Active	ROHS3 Compliant
1N4934G	Taiwan Semiconductor Corporation	100	1	1200 @ 1 A	Fast Recovery ≤ 500ns	200	5 @ 100 V	DO-204AL, DO-41, Axial	Active	ROHS3 Compliant
EGP10B	Fairchild Semiconductor	100	1	950 @ 1 A	Fast Recovery ≤ 500ns	50	5 @ 100 V	DO-204AL, DO-41, Axial	Active	—
1N4002-E3/53	Vishay General Semiconductor - Diodes Division	100	1	1100 @ 1 A	Standard Recovery >500ns	—	5 @ 100 V	DO-204AL, DO-41, Axial	Active	ROHS3 Compliant
1N4002-E3/54	Vishay General Semiconductor - Diodes Division	100	1	1100 @ 1 A	Standard Recovery >500ns	—	5 @ 100 V	DO-204AL, DO-41, Axial	Active	ROHS3 Compliant
1N4002E-E3/53	Vishay General Semiconductor - Diodes Division	100	1	1100 @ 1 A	Standard Recovery >500ns	—	5 @ 100 V	DO-204AL, DO-41, Axial	Active	ROHS3 Compliant
1N4934-E3/54	Vishay General Semiconductor - Diodes Division	100	1	1200 @ 1 A	Fast Recovery ≤ 500ns	200	5 @ 100 V	DO-204AL, DO-41, Axial	Active	ROHS3 Compliant
1N4934GP-AP	Micro Commercial Co	100	1	1200 @ 1 A	Fast Recovery ≤ 500ns	200	5 @ 100 V	DO-204AL, DO-41, Axial	Active	ROHS3 Compliant
1N6077	Microchip Technology	100	1.3	1760 @ 18.8 A	Fast Recovery ≤ 500ns	30	5 @ 100 V	A, Axial	Active	RoHS non-compliant

Engineering Selection Recommendations

Direct Replacement (Identical Specifications):

MUR110G is the direct equivalent to MUR110. Both parts share identical electrical characteristics: 100 V reverse voltage rating, 1 A average rectified current, 875 mV forward voltage drop at 1 A, and 35 ns reverse recovery time. MUR110G is manufactured by onsemi (the same original manufacturer) and is classified as active product status. MUR110G carries ROHS3 compliance certification, addressing regulatory requirements that the obsolete MUR110 does not meet. This part is the primary recommendation for direct substitution in new designs and production.

Fast Recovery Equivalents (Matched Speed Characteristics):

EGP10B (Fairchild Semiconductor), 1N4934G (Taiwan Semiconductor Corporation), 1N4934-E3/54 (Vishay), and 1N4934GP-AP (Micro Commercial Co) all provide fast recovery characteristics matching the MUR110 speed classification (≤ 500ns). These parts maintain 100 V voltage rating and 1 A current rating with through-hole axial packaging. Forward voltage drops range from 950 mV to 1200 mV, representing acceptable variations for general-purpose rectification. All listed variants carry ROHS3 compliance. These parts are suitable for applications where fast recovery performance is required.

Standard Recovery Alternatives (Lower Speed Classification):

1N4002G, 1N4002-E3/53, 1N4002-E3/54, and 1N4002E-E3/53 (all 1N4002 variants) provide standard recovery characteristics (>500ns) with 100 V voltage rating and 1 A current rating. Forward voltage drops range from 1000 mV to 1100 mV. These parts are suitable for applications where recovery speed is not a critical performance parameter and cost optimization is a design consideration. All variants carry ROHS3 compliance.

Higher Current Rating Alternative:

1N6077 (Microchip Technology) provides a 1.3 A average rectified current rating, exceeding the MUR110 specification. This part maintains 100 V voltage rating, fast recovery characteristics (30 ns trr), and through-hole axial packaging. The 1N6077 does not carry RoHS compliance certification. This part is applicable for designs requiring current margin above 1 A within the same voltage class.

Compliance Considerations:

All substitute parts except 1N6077 carry ROHS3 compliance certification. The MUR110 is RoHS non-compliant. For applications subject to RoHS regulatory requirements, MUR110G, EGP10B, 1N4934 variants, and 1N4002 variants satisfy compliance mandates. The 1N6077 maintains RoHS non-compliant status matching the original MUR110 classification.

Frequently Asked Questions (FAQ)

Q: Can MUR110G be used as a direct replacement for MUR110?

A: Yes. MUR110G is the direct equivalent manufactured by onsemi with identical electrical specifications: 100 V reverse voltage, 1 A average rectified current, 875 mV forward voltage at 1 A, and 35 ns reverse recovery time. Both parts use DO-204AL (DO-41) axial through-hole packaging. MUR110G is active product status with ROHS3 compliance, addressing the obsolete status of MUR110.

Q: What is the difference between fast recovery and standard recovery diodes in this product category?

A: Recovery speed is determined by reverse recovery time (trr). Fast recovery diodes exhibit trr ≤ 500ns, while standard recovery diodes exhibit trr >500ns. The MUR110 specifies fast recovery at 35 ns. Fast recovery diodes are preferred in switching applications where reduced switching losses and improved efficiency are required. Standard recovery diodes (1N4002 variants) are suitable for linear power supply and general rectification applications where recovery speed is not performance-critical.

Q: Are all substitute parts compatible with the MUR110 footprint?

A: All listed substitute parts use DO-204AL (DO-41) axial through-hole packaging, which is mechanically and electrically compatible with MUR110 footprints. The 1N6077 uses package designation "A, Axial," which is equivalent to DO-204AL (DO-41) for through-hole axial applications. No PCB layout modifications are required for substitution.

Q: What is the significance of forward voltage (Vf) variation among substitute parts?

A: Forward voltage drop affects power dissipation and circuit performance. The MUR110 specifies 875 mV at 1 A. Substitute parts range from 950 mV (EGP10B) to 1200 mV (1N4934 variants). In general-purpose rectification applications, this variation (25–325 mV) is typically acceptable. In precision analog circuits or applications with tight voltage regulation requirements, forward voltage variation may require circuit re-evaluation. Standard recovery 1N4002 variants exhibit 1000–1100 mV forward voltage, representing a moderate increase from MUR110 specification.

Q: Which substitute part is recommended for new product designs?

A: MUR110G is the recommended substitute for new designs. It provides identical electrical performance to MUR110, maintains the same manufacturer (onsemi), carries active product status ensuring long-term availability, and meets ROHS3 compliance requirements. For applications where RoHS compliance is not mandated, EGP10B and 1N4934 variants provide equivalent fast recovery performance with established supply chain availability.

Q: Can 1N4002 variants be used in applications originally designed for MUR110?

A: 1N4002 variants are functionally compatible for general-purpose rectification applications. Both part families maintain 100 V voltage rating and 1 A current rating with identical through-hole axial packaging. The primary difference is recovery speed: MUR110 provides fast recovery (35 ns), while 1N4002 variants provide standard recovery (>500ns). In linear power supply and general rectification circuits, this difference does not affect circuit functionality. In switching applications where fast recovery is performance-critical, 1N4002 variants are not recommended.

Q: What is the inventory status of substitute parts?

A: MUR110G (4999 pcs), EGP10B (66152 pcs), 1N4002-E3/54 (78691 pcs), and 1N4934-E3/54 (20578 pcs) maintain substantial inventory levels. 1N4002-E3/53 (40502 pcs) and 1N4002E-E3/53 (16682 pcs) provide additional availability. 1N4934G (1573 pcs), 1N6077 (1063 pcs), and 1N4934GP-AP (1035 pcs) maintain lower inventory levels. For high-volume production requirements, EGP10B and 1N4002-E3/54 provide the highest stock availability.

Q: Is the 1N6077 suitable as a substitute for MUR110?

A: The 1N6077 provides higher current rating (1.3 A vs. 1 A) and faster recovery time (30 ns vs. 35 ns), making it electrically superior for the MUR110 application. However, the 1N6077 does not carry RoHS compliance certification, matching the non-compliant status of the original MUR110. The 1N6077 is suitable for applications where RoHS compliance is not required and current margin above 1 A is beneficial. For RoHS-compliant designs, MUR110G or 1N4934 variants are recommended.

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