onsemi 1N5361BRLG

Overview

1N5361BRLG from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 27 V, ±5% tolerance, 50 Ω maximum zener impedance at 5 mA test current, and 0.6 mA maximum leakage current at 20.6 V reverse voltage. It operates across −65 °C to +200 °C and delivers stable voltage regulation in power supply feedback loops, overvoltage protection circuits, and precision reference applications.

For engineers reviewing the 1N5361BRLG datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, thermal performance data, axial package dimensions, real-world use cases, and validated alternative parts for design-in and sourcing decisions.

Technical Context

This device uses silicon-oxide passivated junction technology to achieve tight voltage tolerance (±5%), low zener impedance (50 Ω @ IZT = 5 mA), and high surge robustness (120 A peak non-repetitive surge @ 8.3 ms). Its thermal resistance from junction-to-lead is 25 °C/W at 3/8″ lead length, enabling reliable operation under sustained 5 W dissipation when properly heatsunk.

The 1N5361BRLG exhibits a positive temperature coefficient above 5 V, with typical TC ≈ +4.1 mV/°C near nominal voltage - critical for temperature-stable reference designs. It complies with Class 3 ESD rating (>16 kV HBM) and is Pb-free per JEDEC J-STD-609, packaged in void-free transfer-molded plastic (Case 017AA).

Key Specifications

Pinout & Package

Package: Axial-lead, transfer-molded plastic (Case 017AA); cathode indicated by band; lead diameter 0.037–0.043″ (0.94–1.09 mm); overall length 1.000–1.250″ (25.4–31.75 mm); body diameter 0.130–0.145″ (3.30–3.68 mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N5361BRLG, 1N5361BRL lacks Pb-free compliance but matches all electrical behavior, while MMSZ5262BT1G trades axial ruggedness and 5 W capability for miniaturization and tighter zener impedance - making it suitable only for low-power, surface-mount reference nodes.

Availability

1N5361BRLG is available at Aetrix Electronics and suitable for industrial power supplies, sensor excitation circuits, overvoltage protection systems, and programmable logic controller input stages requiring stable component supply and long-term lifecycle support.

Supply support for 1N5361BRLG 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and IoT applications.

The 1N53 Series belongs to onsemi's Surmetic™ 40 Zener regulator family, engineered for high-reliability voltage reference and clamping in harsh-environment power systems where axial mechanical robustness and surge resilience are mandatory.

FAQ

What is the exact zener voltage range and test condition for 1N5361BRLG?

The 1N5361BRLG has a guaranteed zener voltage range of 25.65 V to 28.35 V at a test current (I_ZT) of 5 mA, measured with 40 ±10 ms current application at T_A = 25 °C ±8 °C. This ±5% tolerance is specified per JEDEC standard and applies only to the "B" suffix variant, confirming its suitability for precision regulation tasks where tight voltage control is required.

Does 1N5361BRLG support high-surge environments like factory automation?

Yes, the 1N5361BRLG is rated for 120 A peak non-repetitive surge current at 8.3 ms pulse width, validated per IEC 61000-4-4 and 61000-4-5 standards. Its 5 W steady-state power rating and 25 °C/W junction-to-lead thermal resistance allow it to absorb transient energy without parameter shift - making it ideal for protecting 24 V DC control lines in industrial settings.

Is 1N5361BRLG RoHS-compliant and what does the 'G' suffix indicate?

Yes, the 'G' suffix in 1N5361BRLG explicitly denotes a Pb-free package compliant with RoHS Directive 2011/65/EU and JEDEC J-STD-609. The device uses SnAgCu solderable leads and void-free thermosetting plastic encapsulation, ensuring environmental compliance and process compatibility with lead-free reflow profiles up to 260 °C for 10 seconds.

How does temperature affect the regulation accuracy of 1N5361BRLG?

The 1N5361BRLG exhibits a positive temperature coefficient of approximately +4.1 mV/°C near its nominal 27 V zener voltage. At 100 °C junction temperature, the zener voltage increases by ~300 mV versus 25 °C - a deviation of ~1.1%. Designers must account for this in high-accuracy references using thermal derating or compensation networks.

Can 1N5361BRLG be used as a direct replacement for older 1N5361B parts?

Yes, the 1N5361BRLG is a drop-in replacement for 1N5361B, maintaining identical electrical specifications, axial package (Case 017AA), pinout, and thermal performance. The only difference is the Pb-free construction - confirmed by onsemi's datasheet revision history and packaging documentation - ensuring full functional and mechanical compatibility in existing designs.