Taiwan Semiconductor Corporation 1N4741G R0G

Overview

1N4741G R0G from Taiwan Semiconductor is a 1 W, 11 V ±5% Zener diode in DO-41 glass package, designed for precision voltage regulation and reference in low-power DC circuits. It delivers stable 11 V clamping at 23 mA test current, with 8 Ω dynamic impedance and 5 µA leakage at 8.4 V reverse bias, commonly used in on-board DC/DC converter feedback networks.

For engineers reviewing the 1N4741G R0G datasheet, 1N4741G R0G pinout, 1N4741G R0G application, or 1N4741G R0G equivalent, key selection criteria include Zener voltage tolerance, power dissipation limit, thermal resistance (R_θJA = 100 °C/W), junction temperature range (–65 to +200 °C), and DO-41 mechanical compatibility.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its terminals under varying load or input conditions. Its 11 V nominal Zener voltage is specified at I_ZT = 23 mA with ±5% tolerance, and it exhibits low dynamic impedance (Z_ZT = 8 Ω) for tight regulation.

The device uses a single-die construction in a hermetically sealed DO-41 glass package with pure tin-plated leads. Thermal performance is defined by R_θJL = 53.5 °C/W and R_θJA = 100 °C/W, supporting reliable operation up to T_J = +200 °C.

Key Specifications

Pinout & Package

DO-41 glass axial package with cathode indicated by a painted band; two-terminal unidirectional device with anode and cathode leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener diode applications.

Compared with 1N4741A and BZX55C11, the 1N4741G R0G offers superior thermal performance (R_θJA = 100 °C/W) and full 1 W capability in the industry-standard DO-41 footprint, making it optimal for thermally demanding or high-reliability DC/DC feedback applications.

Availability

1N4741G R0G is available at Aetrix Electronics and suitable for low-voltage stabilizers, on-board DC/DC converters, lighting applications, and adapters requiring stable component supply with consistent DO-41 mechanical fit and ±5% Zener tolerance.

Supply support for 1N4741G R0G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Taiwan Semiconductor Corporation (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, rectifiers, and Zener diodes for industrial and consumer applications.

The 1N47xxG series was developed to deliver high-reliability, RoHS-compliant Zener references in standardized DO-41 packages, targeting cost-sensitive yet thermally demanding voltage regulation tasks in power conversion and analog signal conditioning.

FAQ

What is the Zener voltage and tolerance of the 1N4741G R0G?

The 1N4741G R0G has a nominal Zener voltage of 11 V with a tolerance of ±5%, measured at a test current of 23 mA. This means the actual breakdown voltage falls between 10.45 V and 11.55 V under standard conditions, ensuring predictable regulation in reference and stabilization circuits.

What is the maximum power dissipation rating for the 1N4741G R0G?

The 1N4741G R0G is rated for 1 W maximum continuous power dissipation at ambient temperature (T_A = 25 °C). Derating is required above 25 °C per the specified thermal resistance (R_θJA = 100 °C/W), and junction temperature must remain within –65 to +200 °C for reliable operation.

Does the 1N4741G R0G have a specified Zener impedance, and why does it matter?

Yes, the 1N4741G R0G has a typical Zener impedance (Z_ZT) of 8 Ω at 23 mA test current. Low impedance improves voltage regulation by minimizing output variation under changing load currents - critical in feedback loops and precision reference applications where stability is essential.

What package type and marking does the 1N4741G R0G use?

The 1N4741G R0G uses the DO-41 axial glass package with a cathode band for polarity identification. Its marking code is "1N4741G", printed directly on the body, and it features pure tin-plated leads compliant with J-STD-002 solderability standards.

Is the 1N4741G R0G RoHS compliant and suitable for industrial environments?

Yes, the 1N4741G R0G is RoHS compliant and built in a hermetically sealed glass DO-41 package. Its –65 to +200 °C junction temperature range and robust construction make it suitable for industrial control systems, power supplies, and lighting applications exposed to thermal stress or humidity.