on October 21th 243

1N4746A Zener Diode (18V, 1W) DO-41: Datasheet, Marking Details, and Equivalent Parts

The 1N4746A is a low-voltage Zener diode encapsulated in a SOD66 (DO-41) glass package, designed for precise voltage regulation in various electronic circuits. In this article, we dig into the features, applications, and advantages of the 1N4746A, providing insights into its 3D model, key characteristics, and practical uses. From voltage regulation and protection circuits to reference voltage sources, this diode is a major component for you who value reliability and performance, mostly in environments with transient voltage spikes or electrical noise. Explore how this versatile diode contributes to the design and efficiency of modern electronic systems.

Catalog

1N4746A Overview

The 1N4746A is a low voltage regulator diode, meticulously encapsulated in a small, hermetically sealed SOD66 (DO-41) glass enclosure. This series presents 22 variations, with nominal voltages spanning from 3.3V to 24V. It's adeptly suited for several general-purpose applications, such as monitors, TVs, printers, switching mode power supplies, adapters, audio equipment, and home appliances, mainly in scenarios demanding reliable AC-to-DC bridge rectification.

The 1N4746A stands as a versatile component, one embraced for its reliability in a multitude of electronic circuits. The hermetically sealed glass enclosure not only ensures robustness but also promises durability, even in challenging environments. In consumer electronics, where consistency and longevity are cherished, its presence is nearly requisite. You can lead its role in AC-to-DC bridge rectification for its stable voltage regulation, used in sustaining device functionality.

The contemporary landscape offers a broader stage for the 1N4746A, extending beyond traditional electronics. Renewable energy systems, like solar power setups, emphasize their adaptability. Efficient voltage regulation supported by the 1N4746A ensures stable power outputs, fostering consistency in renewable energy technologies. Its integration into medical devices is a testament to its reliability, where precision and safety cannot be compromised.

Features of 1N4746A

Feature	Description
Type	Silicon planar power Zener diodes
Application	Used in stabilizing and clipping circuits with high power
Zener Voltage Tolerance	Standard tolerance of ± 5%
Material Categorization	Yes
Reliability	High reliability
Reverse Characteristic	Very sharp reverse characteristic
Reverse Current	Low reverse current level
Voltage Tolerance	Vz-tolerance of ± 5%

3D Model of 1N4746A

Symbol

Footprint

3D Model

Mark Information of 1N4746A

Electrical Characteristics of 1N4746A

Device	VZ (V) @ IZ (Note 1)	Test Current IZ (mA)	Max. Zener Impedance	Leakage Current	Non-Repetitive Peak Reverse Current
	Min.	Typ.	Max.		ZZ @ IZ (Ω)
1N4728A	3.135	3.3	3.465	76	10
1N4729A	3.42	3.6	3.78	69	10
1N4730A	3.705	3.9	4.095	64	9
1N4731A	4.085	4.3	4.515	58	9
1N4732A	4.465	4.7	4.935	53	8
1N4733A	4.845	5.1	5.355	49	7
1N4734A	5.32	5.6	5.88	45	5
1N4735A	5.89	6.2	6.51	41	2
1N4736A	6.46	6.8	7.14	37	3.5
1N4737A	7.125	7.5	7.875	34	3
1N4738A	7.79	8.2	8.61	31	3.5
1N4739A	8.645	9.1	9.555	28	4
1N4740A	9.5	10	10.5	25	4.5
1N4741A	10.45	11	11.55	23	5
1N4742A	11.4	12	12.6	21	6

Specifications of 1N4746A

Type	Parameter
Lifecycle Status	ACTIVE (Last Updated: 3 days ago)
Factory Lead Time	18 Weeks
Contact Plating	Tin
Mount	Through Hole
Mounting Type	Through Hole
Package / Case	DO-204AL, DO-41, Axial
Number of Pins	2
Supplier Device Package	DO-41
Material	Glass
Weight	245mg
Breakdown Voltage / V	18V
Operating Temperature	-65°C~200°C
Packaging	Bulk
Published	2009
Tolerance	±5%
Part Status	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Max Operating Temperature	200°C
Min Operating Temperature	-65°C
Power Rating	1W
Voltage - Rated DC	18V
Max Power Dissipation	1W
Base Part Number	1N4746
Working Voltage	18V
Impedance	20 Ohm
Element Configuration	Single
Current - Reverse Leakage @ Vr	5μA @ 13.7V
Power Dissipation	1W
Output Current	1.8A
Power - Max	1W
Max Reverse Leakage Current	5μA
Impedance - Max	20 Ohms
Test Current	14mA
Voltage - Zener (Nom) (Vz)	18V
Zener Voltage	18V
Peak Reverse Current	5μA
Voltage Tolerance	5%
ESD Protection	No
Zener Current	14mA
Height	2.72mm
Length	5.21mm
Width	2.72mm
REACH SVHC	No SVHC
Radiation Hardening	No
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free

Package Information of 1N4746A

Manufacturer

ON Semiconductor (Nasdaq: ON) is a leader in energy-efficient innovation, significantly contributing to the reduction of global energy consumption. Their extensive portfolio includes power and signal management, logic, discrete solutions, and bespoke solutions. These products service a range of sectors: automotive, communications, computing, consumer electronics, industrial applications, LED lighting, medical technologies, military/aerospace, and power supply systems.

ON Semiconductor makes impactful strides in the automotive industry by offering advanced solutions that enhance vehicle performance and safety. Their push for energy efficiency and reliability aids in the development of both electric and autonomous vehicles. The company’s offerings in communications ensure robust and efficient systems, prioritizing high-quality connectivity. Leveraging their power and signal management expertise, they help optimize network performance and reduce operational costs, satisfying the ever-growing demand for connectivity. In the world of computing and consumer electronics, ON Semiconductor’s contributions are requisite. Their solutions enhance device performance and extend battery life, addressing the demand for higher processing power and energy efficiency.

Datasheet PDF

1N4730A Datasheets:

1N4728A - 58A.pdf

1N4731A Datasheets:

1N4728A - 58A.pdf

Frequently Asked Questions [FAQ]

1. How many pins does the 1N4746A have?

The 1N4746A features a configuration of 2 pins, designed to facilitate efficient electrical connectivity in various applications. This straightforward design ensures minimal complexity in circuit integration, which is mostly beneficial for you. Practical applications have shown that devices with simpler pin structures tend to have higher reliability and ease of maintenance. It is often seen that the ease with which these pins can be integrated into different projects increases their appeal among those who prefer hassle-free installations.

2. What is the operating temperature of the 1N4746A?

The operating temperature of the 1N4746A spans from -65°C to 200°C. This wide temperature range emphasizes its versatility and durability in diverse environments, from extreme cold to intense heat.