SS25HR5G Equivalent & Substitute Parts

Part Overview

The SS25HR5G is a Schottky rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 2 A average rectified current in a DO-214AA (SMB) surface mount package. This component is classified as discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing production and maintenance applications. The part carries automotive-grade qualification (AEC-Q101) and operates across a junction temperature range of -55°C to 150°C. Equivalent alternatives are available from multiple manufacturers with matching or superior electrical characteristics and compliance certifications.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	2	A
Voltage - Forward (Vf) (Max) @ If	700 mV @ 2 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	400	µA @ 50 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 SS25HR5G is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Voltage - DC Reverse (Vr) (Max): 50 V (exact match required)
Current - Average Rectified (Io): 2 A (exact match required)
Voltage - Forward (Vf) (Max) @ If: 700 mV @ 2 A (exact match required)
Package / Case: DO-214AA, SMB (exact match required)
Technology: Schottky (exact match required)
Speed: Fast Recovery ≤ 500ns, > 200mA (Io) (exact match required)

Secondary Compatibility Factors:

Mounting Type: Surface Mount (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)
Moisture Sensitivity Level (MSL): 1 (Unlimited) (exact match required)

Parts are grouped into two categories:

Category A - Direct Equivalents (2A Rating, DO-214AA SMB Package): Parts with identical electrical ratings, package type, and automotive qualification. These include B250-13-F, B250Q-13-F, SS25, and SS25-M3/52T.

Category B - Current-Reduced Alternatives (1A Rating, DO-214AA SMB Package): Parts with reduced current rating (1A instead of 2A) but matching voltage and package specifications. These include B150BQ-13-F, SK15-LTP, SK15-TP, and SK15E3/TR13. These are suitable only for applications where the 1A current rating is sufficient.

Category C - Package Variant (2A Rating, DO-214AC SMA Package): Part B250A-13-F matches electrical specifications but uses SMA package instead of SMB. Mechanical compatibility with board layout must be verified.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Package	Temp Range	Grade	AEC-Q101	Product Status
SS25HR5G	Taiwan Semiconductor Corporation	50 V	2 A	700 mV @ 2 A	DO-214AA, SMB	-55 to 150°C	Automotive	Yes	Discontinued
B250-13-F	Diodes Incorporated	50 V	2 A	700 mV @ 2 A	DO-214AA, SMB	-65 to 150°C	—	—	Active
B250Q-13-F	Diodes Incorporated	50 V	2 A	700 mV @ 2 A	DO-214AA, SMB	-65 to 150°C	Automotive	Yes	Active
B250A-13-F	Diodes Incorporated	50 V	2 A	700 mV @ 2 A	DO-214AC, SMA	-65 to 150°C	—	—	Active
SS25	Taiwan Semiconductor Corporation	50 V	2 A	700 mV @ 2 A	DO-214AA, SMB	-55 to 150°C	—	—	Active
SS25-M3/52T	Vishay General Semiconductor - Diodes Division	50 V	2 A	700 mV @ 2 A	DO-214AA, SMB	-65 to 150°C	—	—	Active
B150BQ-13-F	Diodes Incorporated	50 V	1 A	700 mV @ 1 A	DO-214AA, SMB	-65 to 150°C	Automotive	Yes	Active
SK15-LTP	Micro Commercial Co	50 V	1 A	720 mV @ 1 A	DO-214AA, SMB	-55 to 125°C	—	—	Not For New Designs
SK15-TP (SMBSR105)	Micro Commercial Co	50 V	1 A	720 mV @ 1 A	DO-214AA, SMB	-55 to 125°C	—	—	Active
SK15E3/TR13	Microsemi Corporation	50 V	1 A	720 mV @ 1 A	DO-214AA, SMB	-65 to 175°C	—	—	Active
SK35B-LTP	Micro Commercial Co	50 V	3 A	750 mV @ 3 A	DO-214AA, SMB	-55 to 150°C	—	—	Not For New Designs

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical and Mechanical Specifications):

B250Q-13-F is the primary recommended substitute. This part matches all critical electrical parameters (50 V, 2 A, 700 mV forward voltage) and package specifications (DO-214AA SMB) of the SS25HR5G. B250Q-13-F carries automotive-grade qualification and AEC-Q101 certification, maintaining compliance requirements of the original part. Product status is Active with high inventory availability (17,100 units).

SS25 (Taiwan Semiconductor Corporation) provides an alternative direct equivalent from the original manufacturer. This part is currently Active with superior inventory (35,100 units) and maintains identical electrical specifications and package type. Operating temperature range is -55°C to 150°C, matching the original SS25HR5G.

SS25-M3/52T (Vishay General Semiconductor - Diodes Division) offers equivalent electrical performance with extended lower temperature limit (-65°C versus -55°C). This part is Active with adequate inventory (975 units).

B250-13-F (Diodes Incorporated) provides equivalent electrical specifications with extended temperature range (-65°C to 150°C). Product status is Active with high inventory (18,186 units). This part does not carry automotive-grade designation in the provided data.

For Current-Reduced Applications (1A Rating):

B150BQ-13-F is suitable only for applications where the circuit current requirement does not exceed 1 A. This part maintains 50 V voltage rating, DO-214AA SMB package, automotive-grade qualification, and AEC-Q101 certification. Product status is Active.

SK15E3/TR13 (Microsemi Corporation) provides 1 A rating with extended operating temperature range (-65°C to 175°C). Product status is Active. This part is suitable for applications with reduced current requirements and extended temperature operation.

For Package Variant Applications (SMA Package):

B250A-13-F matches electrical specifications (50 V, 2 A, 700 mV) but uses DO-214AC (SMA) package instead of DO-214AA (SMB). This substitution requires verification of board layout compatibility and mechanical fit. Product status is Active with high inventory (39,825 units).

Parts Not Recommended for New Designs:

SK15-LTP and SK35B-LTP carry product status "Not For New Designs" and should not be selected for new applications. These parts are suitable only for maintenance of existing equipment where original part specifications are required.

Frequently Asked Questions (FAQ)

Q: Can B250Q-13-F directly replace SS25HR5G without circuit modification?

A: Yes. B250Q-13-F matches all critical electrical parameters (50 V reverse voltage, 2 A average rectified current, 700 mV forward voltage at 2 A) and uses the identical DO-214AA SMB package. Both parts carry automotive-grade qualification and AEC-Q101 certification. No circuit modification is required.

Q: What is the difference between B250-13-F and B250Q-13-F?

A: Both parts share identical electrical specifications (50 V, 2 A, 700 mV forward voltage) and DO-214AA SMB package. B250Q-13-F carries automotive-grade qualification and AEC-Q101 certification, while B250-13-F does not include these designations in the provided data. For automotive applications, B250Q-13-F is the appropriate selection.

Q: Can I use a 1 A rated part (B150BQ-13-F or SK15E3/TR13) instead of the 2 A rated SS25HR5G?

A: Substitution with 1 A rated parts is only valid if the circuit current requirement does not exceed 1 A. The 50 V voltage rating and DO-214AA SMB package remain compatible. If the application requires 2 A capability, 1 A rated parts are not suitable.

Q: Why does B250A-13-F use a different package (SMA instead of SMB)?

A: B250A-13-F is manufactured in DO-214AC (SMA) package, which is physically smaller than DO-214AA (SMB). While electrical specifications are identical, board layout and PCB footprint compatibility must be verified before substitution. This part is suitable only for applications where the SMA package footprint is available.

Q: What is the significance of AEC-Q101 certification?

A: AEC-Q101 certification indicates the part meets automotive industry reliability and quality standards. For automotive applications, parts carrying this certification (such as SS25HR5G, B250Q-13-F, and B150BQ-13-F) are required. Parts without this designation may not be acceptable for automotive use.

Q: Is SS25 (active part from Taiwan Semiconductor Corporation) equivalent to SS25HR5G (discontinued)?

A: Yes. SS25 matches all electrical specifications and package type of SS25HR5G. The primary difference is product status: SS25HR5G is discontinued while SS25 is currently Active. SS25 is suitable for direct replacement with superior inventory availability (35,100 units).

Q: What does "Not For New Designs" product status mean?

A: Parts with "Not For New Designs" status (SK15-LTP and SK35B-LTP) are in end-of-life phase. These parts should be used only for maintenance and repair of existing equipment. New product designs should not incorporate these parts.

Q: Can I use SS25-M3/52T in place of SS25HR5G?

A: Yes. SS25-M3/52T provides identical electrical specifications (50 V, 2 A, 700 mV forward voltage) and DO-214AA SMB package. The extended lower temperature limit (-65°C versus -55°C) provides additional operational margin. This part is currently Active.

Q: What is the difference in reverse leakage current between SS25HR5G and substitute parts?

A: SS25HR5G specifies 400 µA reverse leakage at 50 V. Most substitute parts (B250-13-F, B250Q-13-F, B150BQ-13-F, SK15-LTP, SK15-TP, SK15E3/TR13, SK35B-LTP) specify 500 µA at 50 V. This 100 µA difference is within acceptable tolerance for most applications. SS25-M3/52T matches the original 400 µA specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed carry RoHS3 compliance status, matching the original SS25HR5G. All parts also maintain Moisture Sensitivity Level (MSL) 1 (Unlimited) rating.

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