SR010H Equivalent & Substitute Parts

Part Overview

The SR010H is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 100V DC reverse voltage and 500mA average rectified current in a through-hole DO-204AL (DO-41) axial package. This component is classified as Active product status with AEC-Q101 automotive qualification and ROHS3 compliance.

Substitute parts are necessary when the SR010H becomes unavailable, when alternative packaging formats are required for design modifications, or when higher current ratings are needed for circuit redesign. Equivalent parts must maintain the same voltage rating and fast recovery characteristics while accommodating variations in current capacity, forward voltage drop, and mounting technology.

Key Parameters

Parameter	SR010H Value	Substitution Relevance
Voltage - DC Reverse (Vr) (Max)	100 V	Critical - must match or exceed
Current - Average Rectified (Io)	500 mA	Critical - substitutes must support minimum 500mA
Voltage - Forward (Vf) (Max) @ If	850 mV @ 500 mA	Important - affects circuit efficiency
Technology	Schottky	Critical - defines device type
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	Critical - switching performance requirement
Mounting Type	Through Hole	Important - determines PCB assembly compatibility
Package / Case	DO-204AL, DO-41, Axial	Important - physical footprint and lead configuration
Operating Temperature - Junction	-55°C ~ 150°C	Important - thermal operating range
Grade	Automotive	Important - application classification
Qualification	AEC-Q101	Important - automotive reliability standard

Substitute Part Grouping Explanation

Substitution logic for the SR010H is based on the following critical parameters:

Voltage Rating: All substitute parts must maintain 100V DC reverse voltage rating. This is non-negotiable for circuit protection and reliability.

Technology: All substitutes must be Schottky diodes. This technology class defines the forward voltage characteristics and switching speed required for the application.

Speed Characteristic: All substitutes must support fast recovery operation with switching time ≤ 500ns for currents > 200mA. This ensures compatibility with high-frequency switching circuits.

Current Capacity: Substitute parts are grouped into three categories based on average rectified current:

1A Substitutes: Direct current upgrades from 500mA, suitable for circuits with higher current demands
2A Substitutes: Further current capacity increase, through-hole mounting maintained
4A Substitutes: Maximum current capacity, surface-mount technology (SMA package)

Mounting Technology: Substitutes are divided into through-hole (DO-41/DO-204AL axial) and surface-mount (SMA/DO-214AC) categories. Through-hole substitutes maintain identical PCB assembly compatibility. Surface-mount substitutes require PCB redesign but offer space efficiency.

Automotive Qualification: Substitutes with AEC-Q101 qualification and automotive grade designation maintain the same reliability standards as the SR010H. Non-automotive substitutes are listed but represent a grade reduction.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io (Avg Rect)	Vf (Max) @ If	Speed	Mounting	Package	Temp Range	Grade	AEC-Q101
SR010H	Taiwan Semiconductor	100 V	500 mA	850 mV @ 500 mA	Fast Recovery ≤ 500ns	Through Hole	DO-204AL (DO-41)	-55°C ~ 150°C	Automotive	Yes
SB1H100-E3/73	Vishay	100 V	1 A	770 mV @ 1 A	Fast Recovery ≤ 500ns	Through Hole	DO-204AL (DO-41)	-65°C ~ 175°C	Standard	No
SB1H100-E3/54	Vishay	100 V	1 A	770 mV @ 1 A	Fast Recovery ≤ 500ns	Through Hole	DO-204AL (DO-41)	-65°C ~ 175°C	Standard	No
SB1100-T	Diodes Incorporated	100 V	1 A	800 mV @ 1 A	Fast Recovery ≤ 500ns	Through Hole	DO-204AL (DO-41)	-65°C ~ 125°C	Standard	No
SB1100E-G	Comchip Technology	100 V	1 A	850 mV @ 1 A	Fast Recovery ≤ 500ns	Through Hole	DO-204AL (DO-41)	-65°C ~ 150°C	Standard	No
MBR1100G	onsemi	100 V	1 A	790 mV @ 1 A	Fast Recovery ≤ 500ns	Through Hole	DO-204AL (DO-41)	-65°C ~ 175°C	Standard	No
MBR1100RLG	onsemi	100 V	1 A	790 mV @ 1 A	Fast Recovery ≤ 500ns	Through Hole	DO-204AL (DO-41)	-65°C ~ 175°C	Standard	No
SR2010-TP	Micro Commercial Co	100 V	2 A	850 mV @ 2 A	Fast Recovery ≤ 500ns	Through Hole	DO-204AL (DO-41)	-55°C ~ 125°C	Standard	No
MBRA2H100T3G	onsemi	100 V	2 A	790 mV @ 2 A	Fast Recovery ≤ 500ns	Surface Mount	DO-214AC (SMA)	-65°C ~ 175°C	Standard	No
NRVTSA4100ET3G	onsemi	100 V	4 A	680 mV @ 4 A	Fast Recovery ≤ 500ns	Surface Mount	DO-214AC (SMA)	-55°C ~ 175°C	Automotive	Yes
NRVTSA4100T3G	onsemi	100 V	4 A	660 mV @ 4 A	Fast Recovery ≤ 500ns	Surface Mount	DO-214AC (SMA)	-55°C ~ 150°C	Automotive	Yes

Engineering Selection Recommendations

For Direct Through-Hole Replacement (Same Package, Same Mounting):

The following parts provide direct substitution with identical DO-204AL (DO-41) through-hole axial mounting:

SB1H100-E3/73 and SB1H100-E3/54 (Vishay): Both rated 1A with 770mV forward voltage. Extended temperature range to 175°C maximum. No AEC-Q101 qualification.
SB1100-T (Diodes Incorporated): 1A rated with 800mV forward voltage. Temperature range -65°C to 125°C. Active product status. No AEC-Q101 qualification.
SB1100E-G (Comchip Technology): 1A rated with 850mV forward voltage matching the SR010H. Temperature range -65°C to 150°C. Active product status. No AEC-Q101 qualification.
MBR1100G and MBR1100RLG (onsemi): Both 1A rated with 790mV forward voltage. Extended temperature range to 175°C. MBR1100RLG offers higher inventory availability (57,700 units). No AEC-Q101 qualification.

For Higher Current Capacity (Through-Hole):

SR2010-TP (Micro Commercial Co): 2A rated with 850mV forward voltage. Maintains DO-41 through-hole package. Temperature range -55°C to 125°C. Active product status. No AEC-Q101 qualification.

For Surface-Mount Applications (PCB Redesign Required):

MBRA2H100T3G (onsemi): 2A rated in SMA package. 790mV forward voltage. Temperature range -65°C to 175°C. No AEC-Q101 qualification.
NRVTSA4100ET3G (onsemi): 4A rated in SMA package. 680mV forward voltage. AEC-Q101 qualified automotive grade. Temperature range -55°C to 175°C. Last Time Buy product status. Highest inventory availability (1,000,400 units).
NRVTSA4100T3G (onsemi): 4A rated in SMA package. 660mV forward voltage. AEC-Q101 qualified automotive grade. Temperature range -55°C to 150°C. Last Time Buy product status. High inventory availability (1,000,100 units).

Compliance Considerations:

All listed substitutes maintain ROHS3 compliance and REACH Unaffected status. The SR010H is the only through-hole option with AEC-Q101 automotive qualification. For automotive applications requiring AEC-Q101 qualification, the NRVTSA4100ET3G and NRVTSA4100T3G surface-mount options are the only qualified alternatives, requiring PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can I use a 1A rated substitute in place of the 500mA SR010H?

A: Yes. All 1A rated substitutes (SB1H100-E3/73, SB1H100-E3/54, SB1100-T, SB1100E-G, MBR1100G, MBR1100RLG) support the 500mA current requirement. The higher current rating provides design margin and does not affect circuit operation at lower currents.

Q: What is the difference between SB1H100-E3/73 and SB1H100-E3/54?

A: Both parts are identical Vishay Schottky diodes rated 100V, 1A with 770mV forward voltage and DO-204AL (DO-41) through-hole packaging. The suffix designations (E3/73 and E3/54) represent different tape reel configurations for automated assembly. Electrical performance is equivalent.

Q: Can I substitute a surface-mount SMA package diode for the through-hole SR010H?

A: Surface-mount substitution requires PCB redesign and different assembly processes. The MBRA2H100T3G (2A) and NRVTSA4100 series (4A) are electrically compatible but physically incompatible with existing through-hole PCB layouts. This substitution is only viable for new board designs.

Q: Why do some substitutes have lower forward voltage (Vf)?

A: Forward voltage variation is a normal characteristic across different manufacturers and process technologies. Lower Vf values (such as 660mV in NRVTSA4100T3G versus 850mV in SR010H) indicate improved efficiency and reduced power dissipation. This is beneficial for circuit performance.

Q: Are the NRVTSA4100ET3G and NRVTSA4100T3G interchangeable?

A: Both parts are 100V, 4A Schottky diodes in SMA packages with AEC-Q101 qualification. The primary differences are forward voltage (680mV versus 660mV) and reverse leakage current (9µA versus 25µA). They are functionally interchangeable in most applications, though NRVTSA4100T3G offers lower forward voltage for improved efficiency.

Q: What does "Last Time Buy" product status mean for NRVTSA4100 parts?

A: Last Time Buy status indicates the manufacturer has announced end-of-life for these parts. Existing inventory remains available, but no new production is planned. These parts are suitable for current designs but should not be selected for new long-term product development.

Q: Does the SR010H have automotive qualification?

A: Yes. The SR010H carries AEC-Q101 qualification and automotive grade designation. Most through-hole substitutes do not have AEC-Q101 qualification. For automotive applications requiring this certification, only the NRVTSA4100ET3G and NRVTSA4100T3G surface-mount options provide equivalent qualification.

Q: Can I use MBR1100RLG instead of MBR1100G?

A: Yes. Both are onsemi 100V, 1A Schottky diodes in DO-204AL (DO-41) packages with identical electrical specifications. MBR1100RLG is supplied in Cut Tape (CT) packaging with significantly higher inventory (57,700 units versus 1,290 units for MBR1100G in Bulk packaging). Selection depends on assembly process requirements.

Q: What is the temperature operating range difference between SR010H and its substitutes?

A: The SR010H operates from -55°C to 150°C. Most 1A substitutes extend to -65°C minimum and 175°C maximum, providing wider thermal operating margins. The SR2010-TP (2A through-hole) is limited to -55°C to 125°C, matching the SR010H minimum but with lower maximum temperature.

Q: Why is forward voltage specified at different current levels?

A: Forward voltage is current-dependent in Schottky diodes. The SR010H specifies Vf at 500mA, while 1A substitutes specify Vf at 1A. At the SR010H operating current (500mA), the actual forward voltage of 1A-rated substitutes would be lower than their specified values, resulting in improved efficiency.

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