SML4745AHE3_A/I Equivalent & Substitute Parts

Part Overview

The SML4745AHE3_A/I is a Zener diode manufactured by Vishay General Semiconductor - Diodes Division, classified as a surface mount component in the DO-214AC (SMA) package. This 16 V, 1 W Zener diode is designed for voltage regulation and protection applications in electronic circuits. The part carries Active product status and meets automotive-grade specifications with AEC-Q101 qualification. Substitute parts are identified to address inventory availability, packaging format preferences, or supply chain requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	16	V
Tolerance	±5	%
Power - Maximum	1	W
Impedance (Maximum)	16	Ohms
Current - Reverse Leakage @ Vr	5	µA @ 12.2 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 SML4745AHE3_A/I are identified based on strict electrical and mechanical parameter matching. All substitute parts share identical specifications across the following critical parameters:

Voltage - Zener (Nominal): 16 V
Tolerance: ±5%
Power - Maximum: 1 W
Impedance (Maximum): 16 Ohms
Current - Reverse Leakage @ Vr: 5 µA @ 12.2 V
Operating Temperature: 150°C
Package / Case: DO-214AC (SMA)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitution is permitted when these parameters are identical. Differences in packaging format (Tape & Reel versus Cut Tape & Digi-Reel) do not affect electrical or mechanical compatibility and represent alternative supply configurations only.

Parameter Comparison

Parameter	SML4745AHE3_A/I	SML4745A-E3/5A	SML4745A-E3/61
Voltage - Zener (Nominal)	16 V	16 V	16 V
Tolerance	±5%	±5%	±5%
Power - Maximum	1 W	1 W	1 W
Impedance (Maximum)	16 Ohms	16 Ohms	16 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 12.2 V	5 µA @ 12.2 V	5 µA @ 12.2 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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active
Packaging Format	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel® / Tape & Reel (TR)
Inventory (Pcs)	7972	1350	1510

Engineering Selection Recommendations

All three part numbers—SML4745AHE3_A/I, SML4745A-E3/5A, and SML4745A-E3/61—are electrically and mechanically equivalent and carry Active product status. Selection between these parts is determined by packaging format requirements and inventory availability:

SML4745AHE3_A/I is supplied in Tape & Reel (TR) format with the highest inventory level (7972 pcs). This part carries automotive-grade designation with AEC-Q101 qualification, making it suitable for applications requiring automotive compliance.

SML4745A-E3/5A is supplied in Cut Tape (CT) & Digi-Reel® format with 1350 pcs in stock. This configuration is appropriate for applications requiring smaller order quantities or alternative tape handling.

SML4745A-E3/61 is available in both Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) formats with 1510 pcs in stock, providing flexibility in packaging selection.

All parts comply with ROHS3 and REACH requirements. Selection should be based on procurement specifications, assembly equipment compatibility, and supply chain logistics rather than electrical performance, as all parts are functionally identical.

Frequently Asked Questions (FAQ)

Q: Are SML4745A-E3/5A and SML4745A-E3/61 electrically identical to SML4745AHE3_A/I?

A: Yes. All three part numbers share identical electrical specifications: 16 V nominal Zener voltage, ±5% tolerance, 1 W maximum power, 16 Ohms maximum impedance, and 5 µA reverse leakage current at 12.2 V. They are direct functional equivalents.

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

A: Tape & Reel (TR) is a continuous reel format suitable for high-volume automated assembly. Cut Tape (CT) & Digi-Reel® provides the same components in smaller tape segments or alternative reel configurations, typically for lower-volume applications or different assembly equipment. Both formats contain identical components in the same DO-214AC (SMA) package.

Q: Can I substitute SML4745A-E3/5A for SML4745AHE3_A/I in an automotive application?

A: SML4745A-E3/5A meets all electrical and mechanical requirements for the application. However, SML4745AHE3_A/I carries explicit automotive-grade designation with AEC-Q101 qualification. If automotive qualification is a contractual or regulatory requirement, SML4745AHE3_A/I is the specified choice. If automotive qualification is not required, SML4745A-E3/5A is electrically suitable.

Q: Do all three parts have the same moisture sensitivity rating?

A: Yes. All three parts carry Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements.

Q: Are there any compliance differences between these parts?

A: All three parts are ROHS3 Compliant and REACH Unaffected. SML4745AHE3_A/I additionally carries AEC-Q101 automotive qualification. This is the only compliance distinction.

Q: Which part should I select for new designs?

A: Selection depends on supply chain and assembly requirements. For automotive applications requiring AEC-Q101 qualification, specify SML4745AHE3_A/I. For general applications where packaging format is flexible, any of the three parts is suitable based on inventory availability and procurement logistics.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message