SS34-3HE3_B/H Equivalent & Substitute Parts Reference

Part Overview

The Vishay SS34-3HE3_B/H is a Schottky rectifier diode designed for surface mount applications with a maximum reverse voltage of 40V and an average rectified current of 3A. The device is supplied in a DO-214AB (SMC) package, adheres to automotive-grade standards, and is AEC-Q101 qualified. Its active status ensures ongoing availability. However, the identification of equivalent or substitute rectifiers is often required to address sourcing shortages, supply chain disruptions, or allocation constraints, making it vital to confirm that alternative parts strictly match electrical and mechanical specifications.

Key Parameters

Manufacturer Part Number	Technology	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Current - Reverse Leakage @ Vr	Speed	Grade	Qualification	Mounting Type	Package / Case	Supplier Device Package	Operating Temperature - Junction	RoHS Status	MSL	REACH Status	ECCN
SS34-3HE3_B/H	Schottky	40V	3A	500mV @ 3A	500µA @ 40V	Fast Recovery ≤ 500ns, >200mA (Io)	Automotive	AEC-Q101	Surface Mount	DO-214AB, SMC	DO-214AB (SMC)	-55°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99

Substitute Part Grouping Explanation

Substitute rectifiers are included based on strict match of the following parameters:

Schottky technology
Maximum reverse voltage: 40V
Average rectified current: 3A
Maximum forward voltage: 500mV @ 3A
Maximum reverse leakage current permitted at 40V
Fast recovery speed (≤500ns, >200mA)
Surface mount package: DO-214AB (SMC), or explicitly compatible SMC family outlines
Automotive grade and AEC-Q101 qualification where applicable
Compliance: ROHS3, MSL 1, REACH Unaffected

These criteria ensure that substitute parts are suitable for direct replacement in electrical and mechanical design without deviation from defined operational and safety limits.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Technology	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Current - Reverse Leakage @ Vr	Speed	Grade	Qualification	Mounting Type	Package / Case	Supplier Device Package	Operating Temperature - Junction	RoHS Status	MSL	REACH Status	ECCN
SS34-3HE3_B/H	Vishay General Semiconductor - Diodes Division	Schottky	40V	3A	500mV @ 3A	500µA @ 40V	Fast Recovery ≤ 500ns, >200mA (Io)	Automotive	AEC-Q101	Surface Mount	DO-214AB, SMC	DO-214AB (SMC)	-55°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99
SS34HE3_B/H	Vishay General Semiconductor - Diodes Division	Schottky	40V	3A	500mV @ 3A	500µA @ 40V	Fast Recovery ≤ 500ns, >200mA (Io)	Automotive	AEC-Q101	Surface Mount	DO-214AB, SMC	DO-214AB (SMC)	-55°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99
SS34HE3_B/I	Vishay General Semiconductor - Diodes Division	Schottky	40V	3A	500mV @ 3A	500µA @ 40V	Fast Recovery ≤ 500ns, >200mA (Io)	Automotive	AEC-Q101	Surface Mount	DO-214AB, SMC	DO-214AB (SMC)	-55°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99
CDBC340-G	Comchip Technology	Schottky	40V	3A	500mV @ 3A	500µA @ 40V	Fast Recovery ≤ 500ns, >200mA (Io)	-	-	Surface Mount	DO-214AB, SMC	DO-214AB (SMC)	125°C (Max)	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99
5822SMJE3/TR13	Microchip Technology	Schottky	40V	3A	500mV @ 3A	1.5mA @ 40V	Fast Recovery ≤ 500ns, >200mA (Io)	-	-	Surface Mount	DO-214AB, SMC	SMCJ (DO-214AB)	-55°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99
B340CE-13	Diodes Incorporated	Schottky	40V	3A	500mV @ 3A	200µA @ 40V	Fast Recovery ≤ 500ns, >200mA (Io)	-	-	Surface Mount	DO-214AB, SMC	SMC	-55°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99
B340Q-13-F	Diodes Incorporated	Schottky	40V	3A	500mV @ 3A	500µA @ 40V	Fast Recovery ≤ 500ns, >200mA (Io)	Automotive	AEC-Q101	Surface Mount	DO-214AB, SMC	SMC	-55°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99
SK34-AU_R1_000A1	Panjit International Inc.	Schottky	40V	3A	500mV @ 3A	200µA @ 40V	Fast Recovery ≤ 500ns, >200mA (Io)	Automotive	AEC-Q101	Surface Mount	DO-214AB, SMC	SMC (DO-214AB)	-55°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99
SK34-TP	Micro Commercial Co	Schottky	40V	3A	500mV @ 3A	500µA @ 40V	Fast Recovery ≤ 500ns, >200mA (Io)	-	-	Surface Mount	DO-214AB, SMC	SMC (DO-214AB)	-55°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99
SK34_R1_00001	Panjit International Inc.	Schottky	40V	3A	500mV @ 3A	200µA @ 40V	Fast Recovery ≤ 500ns, >200mA (Io)	-	-	Surface Mount	DO-214AB, SMC	SMC (DO-214AB)	-55°C ~ 150°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99
SS34	MDD	Schottky	40V	3A	-	500µA @ 40V	Fast Recovery ≤ 500ns, >200mA (Io)	-	-	Surface Mount	DO-214AC, SMA	SMA	-55°C ~ 125°C	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99

Engineering Selection Recommendations

Selection of substitute rectifier diodes should retain compliance with active product status, ROHS3, MSL 1, and REACH Unaffected standards. AEC-Q101 qualification and automotive-grade specification should be matched where required. The substitute must be available in a comparable surface-mount package compatible with the DO-214AB (SMC) outline to ensure mechanical and assembly compatibility.

Frequently Asked Questions (FAQ)

Q1: Which key parameters determine direct substitutability for Schottky rectifiers?
A1: The primary substitution criteria are technology type (Schottky), maximum reverse voltage, average rectified current, forward voltage drop at specified current, reverse leakage current at rated voltage, switching speed, mounting type, and package outline.

Q2: Is automotive grade and AEC-Q101 qualification required for substitution?
A2: For automotive designs or safety-related applications, automotive grade and AEC-Q101 should be matched. Only select substitute parts with these qualifications for such end-use requirements.

Q3: Are all SMC and DO-214AB packages identical for footprint compatibility?
A3: Parts with DO-214AB, SMC, or SMC (DO-214AB) designations match the package requirements. For substitutes with other SMC-compatible outlines, confirm exact package equivalence within provided data.

Q4: What should be confirmed beyond the electrical parameters for substitution?
A4: Confirm part status (active), compliance with ROHS3 and REACH, and identical or compatible MSL levels for process reliability.

Q5: How significant is reverse leakage current for substitute selection?
A5: Reverse leakage current at rated voltage should not exceed that of the main part unless explicitly required by the application. Only values stated in the parameter table are considered.

Q6: Can a different supplier device package (e.g., SMA vs. SMC) be used interchangeably?
A6: Package outlines must match unless the target design is verified as compatible. Substitutes listed with the SMA outline differ from the specified DO-214AB (SMC) and should only be used if mechanical equivalence is confirmed with the available data.

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