S2DHR5G Equivalent & Substitute Parts

Part Overview

The S2DHR5G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 200 V DC reverse voltage and 2 A average rectified current in a surface mount DO-214AA (SMB) package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design support and procurement.

The S2DHR5G features automotive-grade qualification (AEC-Q101) and operates across a junction temperature range of -55°C to 150°C. Standard recovery characteristics with a reverse recovery time of 1.5 µs and forward voltage of 1.15 V at 2 A define its electrical performance profile.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	200	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	1.15 V @ 2 A	V
Reverse Recovery Time (trr)	1.5	µs
Current - Reverse Leakage @ Vr	1	µA @ 200 V
Package / Case	DO-214AA, SMB	—
Operating Temperature - Junction	-55 to 150	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the S2DHR5G is determined by the following critical parameters:

Voltage Rating: All substitute parts must maintain a DC reverse voltage rating of 200 V or higher to ensure safe operation in the original circuit.

Current Rating: The average rectified current must be 2 A or greater. Parts rated below 2 A are considered similar but not direct equivalents.

Package Type: The DO-214AA (SMB) package is the primary form factor. Parts in alternative packages (SMA, DO-214AC) are listed as similar but require PCB layout modification.

Recovery Characteristics: Standard recovery (>500 ns) and fast recovery (≤500 ns) diodes are both acceptable, as recovery speed does not prevent functional substitution in general-purpose rectification applications.

Temperature Range: Operating temperature range must encompass the original -55°C to 150°C specification or be compatible with the application's thermal requirements.

Compliance: RoHS3 compliance and REACH unaffected status are maintained across all listed substitutes.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf @ If	trr	Package	Temp Range	Status
S2DHR5G	Taiwan Semiconductor	200 V	2 A	1.15 V @ 2 A	1.5 µs	DO-214AA (SMB)	-55 to 150°C	Discontinued
S2DH	Taiwan Semiconductor	200 V	2 A	1.15 V @ 2 A	1.5 µs	DO-214AA (SMB)	-55 to 150°C	Active
S2D	Diotec Semiconductor	200 V	2 A	1.15 V @ 2 A	1.5 µs	DO-214AA (SMB)	-50 to 150°C	Active
ES2D-13-F	Diodes Incorporated	200 V	2 A	920 mV @ 2 A	25 ns	DO-214AA (SMB)	-55 to 150°C	Active
ES2DA-13-F	Diodes Incorporated	200 V	2 A	920 mV @ 2 A	25 ns	DO-214AC (SMA)	-55 to 150°C	Active
MURS120-13-F	Diodes Incorporated	200 V	1 A	875 mV @ 1 A	25 ns	DO-214AA (SMB)	-55 to 175°C	Active
RS2D-13-F	Diodes Incorporated	200 V	1.5 A	1.3 V @ 1.5 A	150 ns	DO-214AA (SMB)	-65 to 150°C	Active
S2D-13-F	Diodes Incorporated	200 V	1.5 A	1.15 V @ 1.5 A	>500 ns	DO-214AA (SMB)	-65 to 150°C	Active
S2DA-13-F	Diodes Incorporated	200 V	1.5 A	1.15 V @ 1.5 A	>500 ns	DO-214AC (SMA)	-65 to 150°C	Active
S3DB-TP	Micro Commercial Co	200 V	3 A	1.15 V @ 3 A	>500 ns	DO-214AA (SMB)	Not specified	Not For New Designs
STTH2R02UY	STMicroelectronics	200 V	2 A	1 V @ 2 A	30 ns	DO-214AA (SMB)	Max 175°C	Active

Engineering Selection Recommendations

Direct Parametric Equivalents (Recommended Primary Substitutes)

The S2DH manufactured by Taiwan Semiconductor Corporation is the direct parametric equivalent to the S2DHR5G. It maintains identical electrical specifications (200 V, 2 A, 1.15 V forward voltage, 1.5 µs recovery time), the same DO-214AA package, automotive-grade qualification (AEC-Q101), and operating temperature range (-55°C to 150°C). The S2DH is currently active in production and represents the optimal replacement for discontinued S2DHR5G applications.

The S2D manufactured by Diotec Semiconductor provides equivalent performance with 200 V, 2 A rating and identical forward voltage characteristics. Operating temperature range is -50°C to 150°C, which covers most applications requiring the original -55°C minimum. This part is active and available in high volume.

Fast Recovery Alternatives (Lower Forward Voltage)

The ES2D-13-F from Diodes Incorporated meets the 200 V, 2 A requirements with improved forward voltage performance (920 mV at 2 A versus 1.15 V) and significantly faster recovery time (25 ns versus 1.5 µs). This part is suitable for applications where reduced power dissipation is beneficial. The DO-214AA package maintains PCB compatibility.

The STTH2R02UY from STMicroelectronics provides 200 V, 2 A performance with the lowest forward voltage (1 V at 2 A) and fast recovery characteristics (30 ns). Automotive-grade qualification is maintained. Maximum junction temperature is specified as 175°C rather than a range, which is acceptable for most applications.

Package Alternatives (SMA Format)

The ES2DA-13-F and S2DA-13-F are functionally equivalent to the S2DHR5G but use the DO-214AC (SMA) package instead of DO-214AA (SMB). These parts require PCB layout modification and are suitable only when package footprint change is acceptable.

Current-Rated Alternatives (Lower Current Ratings)

The MURS120-13-F is rated for 1 A average rectified current, which is below the 2 A specification of the S2DHR5G. This part is suitable only for applications where the actual circuit current requirement is 1 A or less.

The RS2D-13-F and S2D-13-F are rated for 1.5 A, which is below the 2 A specification. These parts are suitable only for applications where the actual circuit current requirement does not exceed 1.5 A.

Not Recommended for New Designs

The S3DB-TP from Micro Commercial Co is rated for 3 A and carries a "Not For New Designs" status. Operating temperature range is not specified. This part should not be selected for new applications.

Frequently Asked Questions (FAQ)

Q: Can I use the S2DH as a direct replacement for the S2DHR5G?

A: Yes. The S2DH is a parametric equivalent with identical voltage rating (200 V), current rating (2 A), forward voltage (1.15 V @ 2 A), recovery time (1.5 µs), package (DO-214AA), temperature range (-55°C to 150°C), and automotive qualification (AEC-Q101). It is currently in active production.

Q: What is the difference between the S2DHR5G and ES2D-13-F?

A: Both parts meet the 200 V, 2 A requirements and use the DO-214AA package. The ES2D-13-F has lower forward voltage (920 mV versus 1.15 V) and faster recovery time (25 ns versus 1.5 µs). The ES2D-13-F is classified as fast recovery, while the S2DHR5G is standard recovery. Fast recovery characteristics reduce power dissipation but are not required for general-purpose rectification.

Q: Can I use a part rated for 1.5 A instead of 2 A?

A: Only if your circuit's actual current requirement does not exceed 1.5 A. The S2DHR5G is rated for 2 A average rectified current. Using a lower-rated part in a 2 A application will cause overheating and premature failure. Verify your circuit's actual current draw before selecting a lower-rated substitute.

Q: What is the difference between DO-214AA (SMB) and DO-214AC (SMA) packages?

A: These are different physical package formats. DO-214AA (SMB) and DO-214AC (SMA) have different footprints and cannot be used interchangeably without PCB layout modification. The S2DHR5G uses DO-214AA. Parts like ES2DA-13-F and S2DA-13-F use DO-214AC and require PCB redesign.

Q: Is the STTH2R02UY suitable for automotive applications?

A: Yes. The STTH2R02UY carries automotive-grade qualification and is rated for 200 V, 2 A operation. It provides lower forward voltage (1 V versus 1.15 V) and faster recovery (30 ns versus 1.5 µs). Maximum junction temperature is specified as 175°C, which is acceptable for automotive thermal environments.

Q: Why do some substitutes have lower forward voltage?

A: Forward voltage varies based on diode technology and doping profile. Lower forward voltage (such as 920 mV in the ES2D-13-F versus 1.15 V in the S2DHR5G) reduces power dissipation during conduction. This is beneficial in high-current or high-frequency applications but does not affect basic rectification function.

Q: Can I use the S3DB-TP (3 A rated) instead of the S2DHR5G (2 A rated)?

A: The S3DB-TP is rated for higher current (3 A) and will function in a 2 A application. However, the S3DB-TP carries a "Not For New Designs" status and operating temperature range is not specified. For new designs, select an active part such as S2DH, S2D, or ES2D-13-F.

Q: What does "Standard Recovery" versus "Fast Recovery" mean?

A: Recovery time is the interval required for a diode to transition from conducting to blocking state. Standard recovery (>500 ns) is typical for general-purpose rectifiers. Fast recovery (≤500 ns) is faster and reduces switching losses. Both are suitable for 50/60 Hz line rectification. Fast recovery is beneficial in switching power supplies and high-frequency applications.

Q: Are all listed substitutes RoHS3 compliant?

A: Yes. All substitute parts listed maintain RoHS3 compliance and REACH unaffected status, matching the environmental compliance of the S2DHR5G.

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