Equivalent & Substitute Parts for SML4741HE3_A/I Zener Diode

Part Overview

SML4741HE3_A/I is an 11 V 1 W ±5% Zener diode from Vishay General Semiconductor - Diodes Division, classified under the Diodes, Zener category. Its DO-214AC (SMA) surface-mount package and automotive AEC-Q101 qualification make it suitable for regulated voltage references and voltage clamping in automotive and industrial applications. The part is active, but locating alternative models is necessary for assuring uninterrupted production, multi-sourcing, and inventory management within strict electrical and mechanical equivalence.

Substiute Parts

SML4741HE3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1100SML4741HE3_A/I Datasheet

Current PartRFQ

SML4741A-E3/61

Vishay General Semiconductor - Diodes DivisionIn Stock: 39799SML4741A-E3/61 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitutes for SML4741HE3_A/I are determined strictly by matching the following key parameters:

• Voltage - Zener (Nom) (Vz)
• Tolerance
• Power - Max
• Impedance (Max) (Zzt)
• Current - Reverse Leakage @ Vr
• Operating Temperature
• Qualification (AEC-Q101)
• Mounting Type
• Package / Case
• RoHS and REACH status

Only parts matching all these technical and regulatory parameters qualify as direct substitutes to ensure interchangeable performance within the same mechanical envelope.

Parameter Comparison

Engineering Selection Recommendations

For automotive and general electronics applications requiring 11 V 1 W Zener diodes in surface-mount DO-214AC (SMA) packaging, both SML4741HE3_A/I and SML4741A-E3/61 meet the specified electrical, mechanical, and environmental criteria, including AEC-Q101 qualification, RoHS3 compliance, unlimited MSL, and REACH status. Both are active products and are suitable for direct substitution in inventory-controlled, compliance-critical environments.

Frequently Asked Questions (FAQ)

Q1: What defines parametric equivalence for Zener diode substitution in the DO-214AC (SMA) package?
A: Parametric equivalence requires identical Zener voltage rating, power dissipation, tolerance, maximum impedance, reverse leakage current, operating temperature, qualification grade, mounting type, package/case dimensions, and compliance status.

Q2: Are SML4741HE3_A/I and SML4741A-E3/61 interchangeable for automotive electronic assemblies?
A: Yes, both parts are AEC-Q101 qualified, automotive grade Zener diodes with matching electrical and mechanical parameters and regulatory compliance.

Q3: Is there any difference in packaging or environmental compliance between these equivalently specified Zener diodes?
A: Both SML4741HE3_A/I and SML4741A-E3/61 are delivered in Tape & Reel (TR) packaging and meet ROHS3 and REACH requirements.

Q4: Do these substitutes require adjustments in PCB layout or assembly processes?
A: No. Both parts utilize DO-214AC (SMA) surface-mount footprints, ensuring full mechanical compatibility.

Q5: What is the relevance of Moisture Sensitivity Level (MSL) in substitution?
A: Both parts have MSL 1 (Unlimited), supporting unrestricted exposure to ambient environments during storage and assembly without special handling.