SML4754AHE3_A/I Equivalent & Substitute Parts

Part Overview

The SML4754AHE3_A/I is a Zener diode manufactured by Vishay General Semiconductor - Diodes Division, rated for 39 V nominal Zener voltage with 1 W maximum power dissipation in a surface mount DO-214AC (SMA) package. This component is classified as Active product status and carries AEC-Q101 automotive qualification. Substitute parts are identified when equivalent electrical parameters and mechanical compatibility are maintained across the same package form factor and performance specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	39	V
Tolerance	±5	%
Power - Maximum	1	W
Impedance (Maximum)	60	Ohms
Current - Reverse Leakage @ Vr	5	µA @ 29.7 V
Operating Temperature	150	°C
Package / Case	DO-214AC, SMA	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SML4754AHE3_A/I are identified based on strict electrical and mechanical parameter equivalence. The substitution criteria are:

Primary Equivalence Parameters:

Voltage - Zener (Nominal): 39 V
Power - Maximum: 1 W
Tolerance: ±5%
Impedance (Maximum): 60 Ohms
Current - Reverse Leakage @ Vr: 5 µA @ 29.7 V
Operating Temperature: 150°C
Package / Case: DO-214AC, SMA
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

All substitute parts listed maintain identical electrical specifications and package compatibility. Packaging format variations (Tape & Reel versus Cut Tape) represent distribution differences only and do not affect functional equivalence.

Parameter Comparison

Parameter	SML4754AHE3_A/I	SML4754A-E3/5A	SML4754A-E3/61
Manufacturer	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division	Vishay General Semiconductor - Diodes Division
Category	Diodes, Zener	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nominal)	39 V	39 V	39 V
Tolerance	±5%	±5%	±5%
Power - Maximum	1 W	1 W	1 W
Impedance (Maximum)	60 Ohms	60 Ohms	60 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 29.7 V	5 µA @ 29.7 V	5 µA @ 29.7 V
Operating Temperature	150°C	150°C	150°C
Package / Case	DO-214AC, SMA	DO-214AC, SMA	DO-214AC, SMA
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Packaging Format	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT)

Engineering Selection Recommendations

All listed substitute parts maintain full electrical and mechanical equivalence to the SML4754AHE3_A/I. Selection between equivalent parts is determined by:

Product Status: All substitute parts carry Active product status, confirming ongoing manufacturer support and availability.

Compliance & Certifications: All parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements. The main part carries AEC-Q101 automotive qualification; substitute parts maintain identical electrical specifications required for automotive applications.

Packaging Format: The SML4754AHE3_A/I is supplied in Tape & Reel format. The substitute SML4754A-E3/5A is also supplied in Tape & Reel format. The substitute SML4754A-E3/61 is supplied in Cut Tape format. Packaging format selection depends on assembly process requirements and volume considerations, not functional performance.

Inventory Availability: Selection may be influenced by current stock levels. The SML4754A-E3/5A maintains 8,327 pieces in stock, and the SML4754A-E3/61 maintains 7,400 pieces in stock, compared to 920 pieces of the main part number.

Frequently Asked Questions (FAQ)

Q: Are the substitute parts electrically identical to the SML4754AHE3_A/I?

A: Yes. The substitute parts SML4754A-E3/5A and SML4754A-E3/61 maintain identical Zener voltage (39 V), power rating (1 W), tolerance (±5%), impedance (60 Ohms maximum), reverse leakage current (5 µA @ 29.7 V), and operating temperature (150°C) specifications.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel and Cut Tape are distribution formats only. Both formats contain the same component in the same DO-214AC (SMA) package. Tape & Reel is supplied on continuous carrier tape suitable for automated pick-and-place assembly. Cut Tape is supplied as individual tape segments. Functional performance is identical.

Q: Can I use SML4754A-E3/61 in place of SML4754AHE3_A/I?

A: Yes. The SML4754A-E3/61 is a parametric equivalent with identical electrical specifications and DO-214AC (SMA) package compatibility. The only difference is the Cut Tape packaging format versus Tape & Reel.

Q: Are these parts suitable for automotive applications?

A: The main part SML4754AHE3_A/I carries AEC-Q101 automotive qualification. The substitute parts maintain identical electrical specifications and compliance certifications (ROHS3, REACH Unaffected) required for automotive use.

Q: What does MSL 1 (Unlimited) mean?

A: Moisture Sensitivity Level 1 indicates the component has unlimited shelf life under normal storage conditions. No special moisture control measures are required during storage or handling.

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

A: Yes. All substitute parts are parametrically equivalent and maintain identical electrical performance. They can be used interchangeably in the same circuit design.

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