Equivalent & Substitute Parts for SS35-1HE3_A/I

Part Overview

The SS35-1HE3_A/I 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 discontinued at DiGi Electronics, necessitating identification of equivalent and substitute parts for ongoing design support and procurement.

The part is qualified to AEC-Q101 automotive standards and operates across a junction temperature range of -55°C to 150°C. Identification of functionally equivalent alternatives ensures design continuity and supply chain flexibility for applications requiring this diode specification.

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

Substitution of the SS35-1HE3_A/I is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Parameters:

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)
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Operating Temperature - Junction: -55°C to 150°C
Technology: Schottky

Substitute parts are grouped into two categories:

Category 1: Direct Manufacturer Equivalents (Vishay) Parts SS35-1HE3_B/I, SS35-E3/57T, SS35-E3/9AT, SS35-M3/57T, SS35-M3/9AT, SS35HE3_B/H, and SS35HE3_B/I are manufactured by Vishay General Semiconductor - Diodes Division and meet all electrical specifications and package requirements. These parts differ only in packaging format (tape and reel configurations) and product status (active versus discontinued).

Category 2: Cross-Manufacturer Equivalents Part SK35_R1_00001 (Panjit International Inc.) and SS35 (Taiwan Semiconductor Corporation) meet all electrical and mechanical specifications. The SK35_R1_00001 exhibits lower reverse leakage current (100 µA @ 50 V versus 500 µA @ 50 V), which represents an improved characteristic within the same functional class.

Parameter Comparison

Part Number	Manufacturer	Vr (Max)	Io	Vf (Max) @ If	Speed	Ir @ Vr	Package	Temp Range	Product Status	Inventory
SS35-1HE3_A/I	Vishay	50 V	3 A	750 mV @ 3 A	Fast Recovery ≤ 500ns	500 µA @ 50 V	DO-214AB, SMC	-55 to 150°C	Discontinued	1034 Pcs
SS35-1HE3_B/I	Vishay	50 V	3 A	750 mV @ 3 A	Fast Recovery ≤ 500ns	500 µA @ 50 V	DO-214AB, SMC	-55 to 150°C	Active	885 Pcs
SS35-E3/57T	Vishay	50 V	3 A	750 mV @ 3 A	Fast Recovery ≤ 500ns	500 µA @ 50 V	DO-214AB, SMC	-55 to 150°C	Active	19698 Pcs
SS35-E3/9AT	Vishay	50 V	3 A	750 mV @ 3 A	Fast Recovery ≤ 500ns	500 µA @ 50 V	DO-214AB, SMC	-55 to 150°C	Active	4171 Pcs
SS35-M3/57T	Vishay	50 V	3 A	750 mV @ 3 A	Fast Recovery ≤ 500ns	500 µA @ 50 V	DO-214AB, SMC	-55 to 150°C	Active	722 Pcs
SS35-M3/9AT	Vishay	50 V	3 A	750 mV @ 3 A	Fast Recovery ≤ 500ns	500 µA @ 50 V	DO-214AB, SMC	-55 to 150°C	Active	987 Pcs
SS35HE3_B/H	Vishay	50 V	3 A	750 mV @ 3 A	Fast Recovery ≤ 500ns	500 µA @ 50 V	DO-214AB, SMC	-55 to 150°C	Active	1001 Pcs
SS35HE3_B/I	Vishay	50 V	3 A	750 mV @ 3 A	Fast Recovery ≤ 500ns	500 µA @ 50 V	DO-214AB, SMC	-55 to 150°C	Active	7940 Pcs
SK35_R1_00001	Panjit	50 V	3 A	750 mV @ 3 A	Fast Recovery ≤ 500ns	100 µA @ 50 V	DO-214AB, SMC	-55 to 150°C	Active	5600 Pcs
SS35	Taiwan Semiconductor	50 V	3 A	750 mV @ 3 A	Fast Recovery ≤ 500ns	500 µA @ 50 V	DO-214AB, SMC	-55 to 150°C	Active	10140 Pcs
SS35 V7G	Taiwan Semiconductor	50 V	3 A	750 mV @ 3 A	Fast Recovery ≤ 500ns	500 µA @ 50 V	DO-214AB, SMC	-55 to 150°C	Discontinued	2463 Pcs

Engineering Selection Recommendations

Primary Recommendation: SS35-E3/57T

The SS35-E3/57T is the preferred substitute for the discontinued SS35-1HE3_A/I. This part is manufactured by Vishay General Semiconductor - Diodes Division and maintains full electrical and mechanical equivalence. The part is currently active in production with the highest inventory availability (19,698 units), ensuring supply chain continuity. Packaging is provided in Cut Tape (CT) and Digi-Reel® format, suitable for both manual and automated assembly operations.

Secondary Recommendation: SS35HE3_B/I

The SS35HE3_B/I serves as an alternative Vishay equivalent with active product status and substantial inventory (7,940 units). This part is supplied in Tape & Reel (TR) format and carries AEC-Q101 automotive qualification, matching the original part's grade designation.

Alternative Recommendation: SK35_R1_00001

The SK35_R1_00001 (Panjit International Inc.) provides cross-manufacturer equivalence with the advantage of reduced reverse leakage current (100 µA @ 50 V versus 500 µA @ 50 V). This characteristic may be beneficial in applications sensitive to leakage current performance. The part is active with 5,600 units in inventory.

Tertiary Recommendation: SS35 (Taiwan Semiconductor Corporation)

The SS35 from Taiwan Semiconductor Corporation is an active, widely available substitute (10,140 units in inventory) that meets all electrical specifications. This part provides maximum supply availability for high-volume applications.

All recommended substitutes are ROHS3 compliant, carry MSL 1 (Unlimited) moisture sensitivity rating, and operate across the identical temperature range (-55°C to 150°C).

Frequently Asked Questions (FAQ)

Q: Can SS35-E3/57T be used as a direct replacement for SS35-1HE3_A/I?

A: Yes. The SS35-E3/57T meets all electrical specifications (50 V reverse voltage, 3 A average rectified current, 750 mV forward voltage @ 3 A) and is packaged in the identical DO-214AB (SMC) surface mount configuration. The primary difference is packaging format (Cut Tape and Digi-Reel® versus the original's unspecified format) and active product status.

Q: What is the difference between Vishay parts with different suffixes (E3, M3, HE3)?

A: The provided data indicates these suffixes represent internal Vishay product line designations. All variants listed maintain identical electrical specifications and DO-214AB packaging. Differences are limited to packaging format (tape and reel configurations) and internal manufacturing codes.

Q: Is the SK35_R1_00001 from Panjit suitable for automotive applications?

A: The SK35_R1_00001 meets the same electrical specifications as the original SS35-1HE3_A/I and operates across the identical temperature range (-55°C to 150°C). However, the original part carries AEC-Q101 automotive qualification, while the Panjit part does not list this certification in the provided data. Automotive application suitability depends on specific qualification requirements of the end application.

Q: Why does SK35_R1_00001 have lower reverse leakage current?

A: The SK35_R1_00001 exhibits 100 µA @ 50 V reverse leakage compared to 500 µA @ 50 V for the original part. This represents a manufacturing characteristic difference between Panjit and Vishay processes. Both values are within acceptable Schottky diode performance ranges for the 50 V / 3 A classification.

Q: Can I mix different substitute parts in the same assembly?

A: All listed substitutes are electrically equivalent and mechanically compatible in the DO-214AB package. However, mixing different manufacturers or packaging formats may introduce process variation and supply chain complexity. Standardization on a single substitute part number is recommended for production consistency.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape (CT) and Digi-Reel® packaging are supplied on continuous tape in smaller quantities suitable for manual or semi-automated assembly. Tape & Reel (TR) packaging provides components on full reels for high-speed automated assembly equipment. Electrical performance is identical; selection depends on assembly process requirements.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification and MSL 1 (Unlimited) moisture sensitivity rating, matching the original SS35-1HE3_A/I specifications.

Q: Which substitute has the best inventory availability?

A: The SS35-E3/57T from Vishay offers the highest inventory availability with 19,698 units in stock, followed by the SS35 from Taiwan Semiconductor Corporation with 10,140 units.

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