SS35-E3/9AT Equivalent & Substitute Parts

Part Overview

The SS35-E3/9AT is a Schottky rectifier diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 50 V DC reverse voltage and 3 A average rectified current in a DO-214AB (SMC) surface mount package. This component is classified as Active and fully compliant with RoHS3 and REACH regulations. The part is supplied in Tape & Reel (TR) packaging with unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or specific application qualifications such as automotive-grade certifications.

Key Parameters

Parameter	Value	Unit
Technology	Schottky	—
Voltage - DC Reverse (Vr) (Max)	50	V
Current - Average Rectified (Io)	3	A
Voltage - Forward (Vf) (Max) @ If	750 mV @ 3 A	—
Speed	Fast Recovery ≤ 500ns, > 200mA (Io)	—
Current - Reverse Leakage @ Vr	500	µA @ 50 V
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SS35-E3/9AT are classified into two primary categories based on electrical parameter compatibility:

Parametric Equivalents (Identical Electrical Specifications)

Parametric equivalent parts maintain all critical electrical parameters: 50 V reverse voltage rating, 3 A average rectified current, 750 mV forward voltage drop at 3 A, and fast recovery characteristics. These parts differ only in packaging format (Cut Tape vs. Tape & Reel), manufacturer, or automotive qualification status. Parametric equivalents include:

SS35-E3/57T (Vishay, Cut Tape & Digi-Reel packaging)
SS35HE3_B/I (Vishay, Automotive AEC-Q101 qualified)
SK35_R1_00001 (Panjit International Inc.)
SS35 (Taiwan Semiconductor Corporation)

Functional Alternatives (Modified Electrical Specifications)

Functional alternative parts maintain the 3 A current rating and surface mount DO-214AB package but operate at different voltage ratings or exhibit different forward voltage characteristics. These parts are suitable for applications where the voltage margin permits operation at lower or higher ratings:

STPS3L60S (STMicroelectronics, 60 V rating, 700 mV Vf)
B340-13-F (Diodes Incorporated, 40 V rating, 500 mV Vf)
B350-13-F (Diodes Incorporated, 50 V rating, 700 mV Vf)
STPS340S (STMicroelectronics, 40 V rating, 630 mV Vf)
STPS340SY (STMicroelectronics, 40 V rating, Automotive AEC-Q101 qualified)

Limited Availability Alternative

SK64L-TP (Micro Commercial Co, 40 V / 6 A rating, Not For New Designs status)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vr (Max) [V]	Io [A]	Vf (Max) @ If [mV]	Reverse Leakage @ Vr [µA]	Package	Packaging Format	Product Status	Automotive Grade
SS35-E3/9AT	Vishay	50	3	750 @ 3A	500 @ 50V	DO-214AB	Tape & Reel	Active	No
SS35-E3/57T	Vishay	50	3	750 @ 3A	500 @ 50V	DO-214AB	Cut Tape & Digi-Reel	Active	No
SS35HE3_B/I	Vishay	50	3	750 @ 3A	500 @ 50V	DO-214AB	Tape & Reel	Active	Yes (AEC-Q101)
SK35_R1_00001	Panjit International Inc.	50	3	750 @ 3A	100 @ 50V	DO-214AB	Tape & Reel	Active	No
SS35	Taiwan Semiconductor Corporation	50	3	750 @ 3A	500 @ 50V	DO-214AB	Not Specified	Active	No
STPS3L60S	STMicroelectronics	60	3	700 @ 3A	55 @ 60V	DO-214AB	Cut Tape & Digi-Reel	Active	No
B340-13-F	Diodes Incorporated	40	3	500 @ 3A	500 @ 40V	DO-214AB	Cut Tape & Digi-Reel	Active	No
B350-13-F	Diodes Incorporated	50	3	700 @ 3A	500 @ 50V	DO-214AB	Tape & Reel	Active	No
STPS340S	STMicroelectronics	40	3	630 @ 3A	20 @ 40V	DO-214AB	Cut Tape & Digi-Reel	Active	No
STPS340SY	STMicroelectronics	40	3	630 @ 3A	20 @ 40V	DO-214AB	Cut Tape & Digi-Reel	Active	Yes (AEC-Q101)
SK64L-TP	Micro Commercial Co	40	6	650 @ 6A	1000 @ 40V	DO-214AB	Tape & Reel	Not For New Designs	No

Engineering Selection Recommendations

Direct Parametric Equivalents

SS35-E3/57T, SS35HE3_B/I, SK35_R1_00001, and SS35 are direct parametric equivalents with identical 50 V / 3 A electrical specifications. Selection among these parts is determined by:

Packaging Format Requirements: SS35-E3/57T provides Cut Tape & Digi-Reel format; SS35HE3_B/I and SK35_R1_00001 are supplied in Tape & Reel format matching the original part.
Automotive Qualification: SS35HE3_B/I carries AEC-Q101 automotive qualification and is suitable for automotive applications requiring formal qualification documentation.
Inventory and Availability: SS35-E3/57T offers the highest inventory (19,698 pcs), followed by SS35HE3_B/I (7,940 pcs) and SK35_R1_00001 (5,600 pcs).

Voltage-Rated Alternatives

B350-13-F (Diodes Incorporated, 50 V / 3 A) and STPS3L60S (STMicroelectronics, 60 V / 3 A) maintain the 50 V or higher voltage rating with 3 A current capacity. These parts are suitable for applications where the original 50 V specification is required or where higher voltage margin is beneficial. B350-13-F exhibits 700 mV forward voltage (50 mV lower than the original part), while STPS3L60S provides 60 V rating with 700 mV forward voltage.

Lower Voltage Alternatives

B340-13-F (Diodes Incorporated, 40 V / 3 A) and STPS340S / STPS340SY (STMicroelectronics, 40 V / 3 A) are suitable only for applications where the circuit operates at 40 V or lower. These parts are not suitable as direct replacements for 50 V-rated designs. STPS340SY provides automotive AEC-Q101 qualification for automotive applications operating at 40 V.

Obsolescence Consideration

SK64L-TP (Micro Commercial Co) carries "Not For New Designs" status and is not recommended for new circuit designs despite its higher 6 A current rating.

Product Status Compliance

All recommended parametric equivalents and voltage-rated alternatives maintain Active product status. All parts comply with RoHS3 and REACH regulations with MSL 1 (Unlimited) moisture sensitivity level.

Frequently Asked Questions (FAQ)

Q: Can SS35-E3/57T be used as a direct replacement for SS35-E3/9AT?

A: Yes. SS35-E3/57T is a parametric equivalent with identical electrical specifications (50 V, 3 A, 750 mV Vf). The only difference is packaging format: SS35-E3/57T is supplied in Cut Tape & Digi-Reel format while SS35-E3/9AT is supplied in Tape & Reel format. Both are surface mount DO-214AB packages suitable for the same PCB assembly processes.

Q: Is SS35HE3_B/I suitable for automotive applications?

A: Yes. SS35HE3_B/I carries AEC-Q101 automotive qualification and is specifically qualified for automotive use. It maintains identical electrical specifications to SS35-E3/9AT (50 V, 3 A, 750 mV Vf) and is supplied in Tape & Reel format.

Q: Can B340-13-F or STPS340S replace SS35-E3/9AT in a 50 V circuit?

A: No. B340-13-F and STPS340S are rated for 40 V maximum reverse voltage, which is insufficient for circuits designed for 50 V operation. These parts are suitable only for applications operating at 40 V or lower.

Q: What is the difference between STPS340S and STPS340SY?

A: Both parts have identical electrical specifications (40 V, 3 A, 630 mV Vf). STPS340SY carries AEC-Q101 automotive qualification and operates over -40°C to 150°C temperature range, while STPS340S does not carry automotive qualification. Both are supplied in Cut Tape & Digi-Reel format.

Q: Can STPS3L60S be used in place of SS35-E3/9AT?

A: STPS3L60S is a functional alternative with 60 V rating and 3 A current capacity. It is suitable for applications where 50 V operation is required, as the 60 V rating provides additional voltage margin. Forward voltage is 700 mV (50 mV lower than the original part). Reverse leakage is significantly lower at 55 µA compared to 500 µA for the original part.

Q: Why is SK64L-TP not recommended despite higher current rating?

A: SK64L-TP carries "Not For New Designs" product status, indicating the manufacturer has discontinued active support for new applications. Although it provides 6 A current capacity at 40 V, it is not suitable for new circuit designs.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed maintain RoHS3 compliance and REACH unaffected status, matching the regulatory compliance of the original SS35-E3/9AT part.

Q: What is the significance of reverse leakage current differences among substitutes?

A: Reverse leakage current affects power dissipation and circuit performance at high temperatures. SK35_R1_00001 exhibits 100 µA leakage (lower than the original 500 µA), while STPS3L60S exhibits 55 µA (significantly lower). Lower leakage reduces standby power consumption. STPS340S and STPS340SY exhibit 20 µA leakage, the lowest among all listed parts.

Q: Can packaging format differences affect PCB assembly?

A: Packaging format (Tape & Reel vs. Cut Tape & Digi-Reel) affects component handling and automated assembly processes but does not affect electrical performance or PCB footprint. Both formats use the same DO-214AB surface mount package and are compatible with standard SMT assembly equipment.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message