S115FP Schottky Diode Equivalent & Substitute Parts

Part Overview

The S115FP is a 150V, 1A Schottky rectifier diode manufactured by onsemi in SOD-123HE surface mount packaging. This component is classified as Not For New Designs, indicating it has reached end-of-life status. The diode is qualified to AEC-Q101 automotive standards and features fast recovery characteristics suitable for high-frequency switching applications. Identification of equivalent and substitute parts is necessary to support existing designs, maintain production continuity, and ensure compliance with automotive qualification requirements.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	150	V
Current - Average Rectified (Io)	1	A
Voltage - Forward (Vf) (Max) @ If	900 mV @ 1 A	mV
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	ns
Current - Reverse Leakage @ Vr	50	µA @ 150 V
Technology	Schottky	—
Package / Case	SOD-123H	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55°C ~ 150°C	°C
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the S115FP are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes (Identical Package and Electrical Ratings): Parts that maintain the same SOD-123HE package, 150V reverse voltage rating, and 1A average rectified current are considered direct substitutes. These parts satisfy the core electrical requirements and physical form factor constraints. Variations in forward voltage drop (Vf), reverse leakage current (Ir), and junction capacitance are within acceptable ranges for Schottky diode technology and do not prevent functional substitution.

Parametric Equivalents (Same Electrical Ratings, Different Package): Parts that maintain the 150V reverse voltage and fast recovery speed characteristics but differ in package form factor or current rating are classified as parametric equivalents. These parts satisfy the electrical performance requirements but require mechanical design review for printed circuit board layout compatibility.

Key Parameters Determining Substitution:

Voltage - DC Reverse (Vr) (Max): 150V (mandatory match)
Current - Average Rectified (Io): 1A minimum (equal or higher acceptable)
Technology: Schottky (mandatory match)
Speed: Fast Recovery ≤ 500ns, > 200mA (mandatory match)
Mounting Type: Surface Mount (mandatory match)
Grade: Automotive (mandatory for automotive applications)
Qualification: AEC-Q101 (mandatory for automotive applications)

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ 1A	Ir @ 150V	Package	Product Status	AEC-Q101
S115FP	onsemi	150V	1A	900 mV	50 µA	SOD-123HE	Not For New Designs	Yes
SS10150HE-AU_R1_000A1	Panjit International Inc.	150V	1A	850 mV	30 µA	SOD-123HE	Active	Yes
SS10150HE_R1_00001	Panjit International Inc.	150V	1A	850 mV	30 µA	SOD-123HE	Active	No
V2PM15LHM3/H	Vishay General Semiconductor - Diodes Division	150V	1.7A	760 mV	100 µA	DO-220AA	Active	Yes
SS115LS RVG	Taiwan Semiconductor Corporation	150V	1A	900 mV	50 µA	SOD-123HE	Active	No
SS115LSH	Taiwan Semiconductor Corporation	150V	1A	900 mV	50 µA	SOD-123HE	Active	Yes

Engineering Selection Recommendations

For Automotive Applications (AEC-Q101 Required):

SS10150HE-AU_R1_000A1 (Panjit International Inc.) is the primary direct substitute. This part maintains identical electrical ratings (150V, 1A), package form factor (SOD-123HE), and automotive qualification (AEC-Q101). The lower forward voltage drop (850 mV vs. 900 mV) and reduced reverse leakage current (30 µA vs. 50 µA) represent improved performance characteristics. Product status is Active, ensuring long-term availability.

SS115LSH (Taiwan Semiconductor Corporation) is an alternative direct substitute with identical electrical characteristics to the S115FP (900 mV Vf, 50 µA Ir) and matching SOD-123HE package. This part holds AEC-Q101 qualification and Active product status, providing equivalent performance with confirmed automotive compliance.

V2PM15LHM3/H (Vishay General Semiconductor - Diodes Division) is a parametric equivalent suitable for applications where package size constraints permit DO-220AA form factor. This part provides higher current capability (1.7A vs. 1A) and superior forward voltage characteristics (760 mV), with AEC-Q101 qualification and Active status. PCB layout redesign is required for this substitution.

For Non-Automotive Applications:

SS115LS RVG (Taiwan Semiconductor Corporation) provides direct electrical and package compatibility with Active product status, though AEC-Q101 qualification is not specified.

Frequently Asked Questions (FAQ)

Q: Can SS10150HE_R1_00001 be used as a direct replacement for S115FP in automotive applications?

A: SS10150HE_R1_00001 maintains identical electrical ratings (150V, 1A) and SOD-123HE package compatibility. However, AEC-Q101 qualification is not specified for this part number variant. For automotive applications requiring AEC-Q101 compliance, SS10150HE-AU_R1_000A1 or SS115LSH are the appropriate selections.

Q: What is the difference between SS10150HE-AU_R1_000A1 and SS10150HE_R1_00001?

A: Both parts are manufactured by Panjit International Inc. and share identical electrical specifications (150V, 1A, 850 mV Vf, 30 µA Ir). The primary difference is AEC-Q101 qualification status: SS10150HE-AU_R1_000A1 carries AEC-Q101 certification, while SS10150HE_R1_00001 does not. For automotive applications, SS10150HE-AU_R1_000A1 is the correct selection.

Q: Can V2PM15LHM3/H replace S115FP without circuit modification?

A: V2PM15LHM3/H differs in package form factor (DO-220AA vs. SOD-123HE) and current rating (1.7A vs. 1A). While electrical ratings (150V, fast recovery) are compatible, PCB layout redesign is required to accommodate the different package footprint. The higher current capability and improved forward voltage characteristics (760 mV) may provide performance benefits in applications with available thermal and spatial resources.

Q: Why is S115FP marked as "Not For New Designs"?

A: This designation indicates the part has reached end-of-life status at the manufacturer. Existing designs using S115FP should transition to active alternatives such as SS10150HE-AU_R1_000A1 or SS115LSH to ensure long-term supply continuity and manufacturing support.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance status, consistent with the S115FP original part specification.

Q: What is the significance of the lower forward voltage drop in Panjit parts?

A: The Panjit SS10150HE variants (850 mV Vf) exhibit lower forward voltage drop compared to the S115FP (900 mV Vf). This 50 mV reduction results in lower power dissipation and improved thermal performance in rectification circuits. This represents an improvement over the original part and does not create compatibility issues.

Q: Can SS115LS RVG be used in automotive applications?

A: SS115LS RVG provides identical electrical characteristics to S115FP and maintains SOD-123HE package compatibility with Active product status. However, AEC-Q101 qualification is not specified. For applications requiring automotive qualification, SS115LSH or SS10150HE-AU_R1_000A1 are the appropriate selections.

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