SML4759HE3_A/I Equivalent & Substitute Parts

Part Overview

The SML4759HE3_A/I is a Zener diode rated at 62 V, 1 W, manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates across the temperature range of -65°C to 150°C and is qualified to AEC-Q101 automotive standards. The part is actively produced and maintained in inventory. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring 62 V Zener diode functionality in the DO-214AC (SMA) package.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	62	V
Tolerance	±5	%
Power - Maximum	1	W
Impedance (Maximum)	125	Ohms
Current - Reverse Leakage @ Vr	5	µA @ 47.1 V
Operating Temperature Range	-65 to 150	°C
Package / Case	DO-214AC (SMA)	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the SML4759HE3_A/I are identified based on strict electrical and mechanical parameter matching. All substitute parts must satisfy the following criteria:

Critical Matching Parameters:

Zener voltage: 62 V nominal
Tolerance: ±5%
Maximum power dissipation: 1 W
Maximum impedance: 125 Ohms
Reverse leakage current: 5 µA @ 47.1 V
Operating temperature range: -65°C to 150°C
Package: DO-214AC (SMA)
Mounting type: Surface Mount
RoHS3 compliance
Moisture Sensitivity Level: 1

All identified substitute parts meet these electrical and mechanical specifications. Packaging format variations (Tape & Reel versus Cut Tape & Digi-Reel) do not affect electrical performance and represent procurement and handling options only.

Parameter Comparison

Parameter	SML4759HE3_A/I	SML4759-E3/61	SML4759A-E3/5A
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)	62 V	62 V	62 V
Tolerance	±5%	±5%	±5%
Power - Maximum	1 W	1 W	1 W
Impedance (Maximum)	125 Ohms	125 Ohms	125 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 47.1 V	5 µA @ 47.1 V	5 µA @ 47.1 V
Operating Temperature Range	-65°C to 150°C	-65°C to 150°C	-65°C to 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

Engineering Selection Recommendations

All three parts—SML4759HE3_A/I, SML4759-E3/61, and SML4759A-E3/5A—are active products manufactured by Vishay General Semiconductor - Diodes Division and carry identical electrical specifications and compliance certifications. Selection among these parts is based on procurement and packaging requirements:

SML4759HE3_A/I: Primary part number with Tape & Reel packaging. Current inventory: 684 pieces.

SML4759-E3/61: Parametric equivalent with Tape & Reel packaging. Current inventory: 2593 pieces. Higher stock availability supports extended lead time mitigation.

SML4759A-E3/5A: Parametric equivalent available in Cut Tape & Digi-Reel packaging format. Current inventory: 2932 pieces. Packaging format accommodates both automated assembly and manual component handling workflows.

All parts satisfy AEC-Q101 automotive qualification, ROHS3 compliance, and REACH regulatory requirements. Electrical performance, thermal characteristics, and reliability specifications are identical across all three part numbers.

Frequently Asked Questions (FAQ)

Q: Can SML4759-E3/61 be used as a direct replacement for SML4759HE3_A/I?

A: Yes. Both parts are parametric equivalents with identical electrical specifications, operating temperature range, package type (DO-214AC/SMA), and compliance certifications. The difference is in the part number designation and packaging format (Tape & Reel for both).

Q: What is the difference between SML4759A-E3/5A and the other two parts?

A: SML4759A-E3/5A is electrically identical to SML4759HE3_A/I and SML4759-E3/61. The primary difference is packaging format: SML4759A-E3/5A is supplied in Cut Tape & Digi-Reel format, while the other two use standard Tape & Reel. All three parts have the same DO-214AC (SMA) package and surface mount mounting type.

Q: Are there any thermal or reliability differences between these parts?

A: No. All three parts operate across the identical temperature range (-65°C to 150°C), have the same power rating (1 W), and carry the same AEC-Q101 automotive qualification. Thermal and reliability performance are equivalent.

Q: Can I mix packaging formats in the same assembly?

A: Yes. All three parts use the same DO-214AC (SMA) package footprint and are compatible with identical PCB layouts and reflow profiles. Packaging format differences (Tape & Reel versus Cut Tape & Digi-Reel) do not affect electrical performance or mechanical compatibility.

Q: Which part should I select for new designs?

A: All three parts are suitable for new designs. Selection should be based on procurement availability, inventory levels, and packaging format requirements for your manufacturing process. All parts carry active product status and full compliance certifications.

Q: Are these parts suitable for automotive applications?

A: Yes. All three parts carry AEC-Q101 automotive qualification and are graded for automotive use. They meet automotive reliability and qualification standards.

Q: What is the significance of the ±5% tolerance specification?

A: The ±5% tolerance indicates the acceptable variation in the nominal 62 V Zener voltage across the specified operating temperature range and under specified test conditions. This tolerance applies equally to all three substitute parts.

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