SR110H Equivalent & Substitute Parts

Part Overview

The SR110H is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100V DC reverse voltage and 1A average rectified current in a through-hole DO-204AL (DO-41) axial package. This component is classified as Active product status and carries AEC-Q101 automotive qualification with ROHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, manufacturing discontinuation, or design flexibility across multiple suppliers.

Substiute Parts

SR110H

Taiwan Semiconductor CorporationIn Stock: 1115SR110H Datasheet

Current PartRFQ

SR110

Taiwan Semiconductor CorporationIn Stock: 5486SR110 Datasheet

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MBR1100G

onsemiIn Stock: 1312MBR1100G Datasheet

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MBR1100RLG

onsemiIn Stock: 57711MBR1100RLG Datasheet

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MBRA2H100T3G

onsemiIn Stock: 30338MBRA2H100T3G Datasheet

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NRVTSA4100ET3G

onsemiIn Stock: 1000430NRVTSA4100ET3G Datasheet

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NRVTSA4100T3G

onsemiIn Stock: 1000165NRVTSA4100T3G Datasheet

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SB1100-T

Diodes IncorporatedIn Stock: 11497SB1100-T Datasheet

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SB1100E-G

Comchip TechnologyIn Stock: 5980SB1100E-G Datasheet

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SB1H100-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 16267SB1H100-E3/54 Datasheet

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SB1H100-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 15188SB1H100-E3/73 Datasheet

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SR2010-TP

Micro Commercial CoIn Stock: 20261SR2010-TP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SR110H are classified into two categories based on electrical and mechanical compatibility:

Category 1: Direct Electrical & Mechanical Equivalents (Through-Hole, 100V, 1A)

These parts maintain identical voltage rating (100V DC reverse), current rating (1A average rectified), through-hole mounting configuration, and DO-204AL/DO-41 axial package format. Substitution within this category is based on matching these core parameters. Forward voltage (Vf), reverse leakage current (Ir), and operating temperature range may vary within acceptable engineering tolerances for the application. Parts in this category include SR110 (Cut Tape packaging variant), SB1100-T, SB1100E-G, SB1H100-E3/54, and SB1H100-E3/73.

Category 2: Higher Current Rating Variants (Surface Mount, 100V, 2A–4A)

These parts share the 100V DC reverse voltage rating and Schottky technology but feature increased current capacity (2A or 4A) and surface-mount packaging (SMA/DO-214AC). These are not direct pin-for-pin replacements due to different mounting type and package footprint. Substitution requires circuit board redesign. Parts in this category include MBRA2H100T3G (2A, SMA) and NRVTSA4100ET3G/NRVTSA4100T3G (4A, SMA).

Category 3: Through-Hole Axial Variants (100V, 1A)

These parts maintain through-hole axial mounting and 100V/1A electrical ratings but originate from different manufacturers. Parts include MBR1100G and MBR1100RLG from onsemi.

Key Parameters Determining Substitution:

• Voltage - DC Reverse (Vr): Must equal 100V
• Current - Average Rectified (Io): Must equal or exceed 1A
• Mounting Type: Through-Hole for direct replacement
• Package / Case: DO-204AL/DO-41 axial for direct replacement
• Technology: Schottky (all candidates)
• Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (all candidates)

Parameter Comparison

Engineering Selection Recommendations

For Direct Through-Hole Replacement (No PCB Redesign Required):

The SR110 (Cut Tape variant from Taiwan Semiconductor Corporation) is the primary parametric equivalent, offering identical electrical specifications and through-hole DO-204AL packaging. This part maintains the same 100V/1A rating, forward voltage characteristic, and operating temperature range as the SR110H.

SB1H100-E3/54 and SB1H100-E3/73 (Vishay General Semiconductor) are qualified substitutes with superior reverse leakage characteristics (1 µA versus 100 µA at 100V) and extended maximum junction temperature (175°C). These parts are suitable for applications requiring lower leakage performance.

SB1100-T (Diodes Incorporated) and SB1100E-G (Comchip Technology) are functionally compatible alternatives with comparable forward voltage and reverse leakage specifications. SB1100-T operates at a maximum junction temperature of 125°C, which is lower than the SR110H; circuit thermal analysis is required to confirm suitability.

MBR1100G and MBR1100RLG (onsemi) maintain 100V/1A electrical ratings and through-hole axial packaging. These parts feature lower forward voltage (790 mV versus 850 mV) and extended operating temperature range (-65°C to 175°C), offering thermal margin advantages in high-temperature applications.

For Surface-Mount Applications (PCB Redesign Required):

MBRA2H100T3G (onsemi, 2A, SMA package) and NRVTSA4100ET3G/NRVTSA4100T3G (onsemi, 4A, SMA package) are not direct replacements due to different mounting technology and package footprint. These parts are applicable only when circuit board layout permits surface-mount component placement. NRVTSA4100ET3G and NRVTSA4100T3G carry automotive grade and AEC-Q101 qualification, matching the SR110H compliance profile.

Compliance Considerations:

The SR110H carries automotive grade classification and AEC-Q101 qualification. When substituting in automotive applications, NRVTSA4100ET3G and NRVTSA4100T3G maintain equivalent qualification status. Through-hole alternatives (SR110, SB1H100-E3/54, SB1H100-E3/73, MBR1100G, MBR1100RLG, SB1100-T, SB1100E-G) do not carry explicit automotive grade or AEC-Q101 designation in the provided data; circuit design authority must confirm acceptability for automotive end-use.

All substitute candidates are ROHS3 compliant and REACH unaffected, matching the SR110H environmental compliance status.

Frequently Asked Questions (FAQ)

Q: Can SR110 (Cut Tape) be used as a direct replacement for SR110H (Tape & Reel)?

A: Yes. SR110 and SR110H are parametrically identical in electrical specifications (100V, 1A, 850 mV forward voltage, 100 µA reverse leakage) and package format (DO-204AL/DO-41 through-hole axial). The difference is packaging format: SR110H is supplied in Tape & Reel format, while SR110 is supplied in Cut Tape format. Both are suitable for through-hole PCB assembly without circuit modification.

Q: What is the primary difference between through-hole and surface-mount substitute options?

A: Through-hole substitutes (SB1100-T, SB1H100-E3/54, SB1H100-E3/73, MBR1100G, MBR1100RLG) maintain the same axial lead configuration and DO-204AL package as the SR110H, allowing direct PCB mounting without layout changes. Surface-mount substitutes (MBRA2H100T3G, NRVTSA4100ET3G, NRVTSA4100T3G) use SMA package format and require PCB footprint redesign. Surface-mount options are not interchangeable with through-hole designs without circuit board modification.

Q: Why do some substitute parts have lower forward voltage (Vf) than the SR110H?

A: Forward voltage variation is a normal characteristic of Schottky diodes across different manufacturers and process technologies. MBR1100G and MBR1100RLG specify 790 mV versus SR110H's 850 mV at 1A. Lower forward voltage reduces power dissipation in the diode, which can improve circuit efficiency. Circuit design must confirm that the lower voltage drop does not affect voltage regulation or signal integrity requirements.

Q: Are SB1H100-E3/54 and SB1H100-E3/73 interchangeable?

A: Yes. Both parts are manufactured by Vishay General Semiconductor with identical electrical specifications (100V, 1A, 770 mV forward voltage, 1 µA reverse leakage) and package format (DO-204AL/DO-41). The designation suffix (/54 and /73) indicates different tape reel specifications for manufacturing and supply chain purposes. Electrical performance and PCB compatibility are identical.

Q: Can NRVTSA4100ET3G or NRVTSA4100T3G be used in place of SR110H in automotive applications?

A: NRVTSA4100ET3G and NRVTSA4100T3G carry automotive grade and AEC-Q101 qualification, matching the SR110H compliance profile. However, these parts are surface-mount SMA package devices, not through-hole components. Substitution requires PCB redesign. Additionally, these parts are rated for 4A current capacity, which exceeds the SR110H's 1A rating. Circuit design authority must confirm that the higher current rating and surface-mount package are acceptable for the application.

Q: What is the significance of reverse leakage current (Ir) differences among substitute parts?

A: Reverse leakage current represents the small current flowing through the diode in reverse bias condition. SR110H specifies 100 µA at 100V, while SB1H100-E3/54 and SB1H100-E3/73 specify only 1 µA. Lower reverse leakage reduces standby power consumption and heat generation in circuits with sustained reverse bias. Applications requiring minimal leakage current benefit from Vishay parts. Conversely, higher leakage (MBR1100G/MBR1100RLG at 500 µA) may be acceptable in high-current applications where leakage is negligible relative to forward current.

Q: What operating temperature range should be considered when selecting a substitute?

A: SR110H operates from -55°C to 150°C junction temperature. Substitute parts vary: SB1100-T operates to 125°C (lower limit), while MBR1100G, MBR1100RLG, SB1H100-E3/54, SB1H100-E3/73, MBRA2H100T3G, and NRVTSA4100ET3G operate to 175°C (higher limit). NRVTSA4100T3G operates to 150°C. Circuit thermal analysis must confirm that the selected part's maximum junction temperature accommodates the application's worst-case ambient temperature and power dissipation conditions.

Q: Is the SR110H suitable for automotive applications, and do all substitutes maintain this qualification?

A: SR110H carries automotive grade and AEC-Q101 qualification. Among through-hole substitutes, only NRVTSA4100ET3G and NRVTSA4100T3G explicitly carry automotive grade and AEC-Q101 designation. Other through-hole alternatives (SR110, SB1100-T, SB1100E-G, SB1H100-E3/54, SB1H100-E3/73, MBR1100G, MBR1100RLG) do not carry explicit automotive qualification in the provided specifications. For automotive end-use applications, circuit design authority must confirm acceptability of non-qualified parts or select NRVTSA4100ET3G/NRVTSA4100T3G (with surface-mount package redesign requirement).

Q: What inventory considerations apply when selecting a substitute?

A: SR110H has 1,097 pieces in stock. SR110 (Cut Tape) has significantly higher inventory at 5,400 pieces. MBR1100RLG offers the largest inventory at 57,700 pieces. NRVTSA4100ET3G and NRVTSA4100T3G have very high inventory (1,000,400 and 1,000,100 pieces respectively) but are marked as Last Time Buy status, indicating future discontinuation. For long-term supply chain stability, SR110, MBR1100RLG, and SB1H100-E3/54/E3/73 offer better availability. Inventory levels should be evaluated against project timeline and volume requirements.