onsemi 1N5365BRL

Overview

1N5365BRL from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 36 V, ±5% tolerance, maximum zener impedance of 30 Ω at 11 mA test current, and surge rating of 160 A at 8.3 ms. It operates across −65°C to +200°C and is used for precision voltage regulation in power supply feedback loops, overvoltage protection circuits, and reference voltage generation.

For engineers reviewing the 1N5365BRL datasheet, pinout, applications, or equivalent options, key selection criteria include its 36 V nominal zener voltage, 5 W steady-state power dissipation, 30 Ω dynamic impedance at IZT = 11 mA, low leakage current (≤0.65 mA at VR = 27.4 V), and Pb-free Surmetic 40 plastic package with cathode band polarity marking.

Technical Context

This device implements a silicon-oxide passivated junction for stable reverse breakdown characteristics and enhanced reliability under thermal cycling. Its zener voltage is specified at two test currents (10% and 50% of IZM) with 40 ±10 ms pulse duration, ensuring consistent regulation performance in DC and pulsed applications.

The 1N5365BRL exhibits a positive temperature coefficient above 5 V, with typical θVZ ≈ +0.075 %/°C near 36 V, enabling predictable drift compensation in temperature-sensitive references. Thermal resistance from junction-to-lead is 25 °C/W at TL = 25°C with 3/8″ lead length, supporting direct lead-sink heat dissipation without heatsinks in moderate-power designs.

Key Specifications

Pinout & Package

Package: Axial-lead Surmetic 40 plastic case (JEDEC CASE 017AA), void-free transfer-molded thermosetting material, cathode indicated by color band, leads solderable per 260°C/10 s standard.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N5365B and BZX85C36, the 1N5365BRL delivers higher power capability (5 W vs. 1.3 W), superior surge robustness (160 A vs. ~40 A), and Pb-free tape-and-reel compatibility-making it optimal for high-reliability, volume-manufactured power regulation designs.

Availability

1N5365BRL is available at Aetrix Electronics and suitable for switching power supplies, overvoltage protection circuits, and precision reference generation requiring stable component supply, RoHS compliance, and automated assembly readiness.

Supply support for 1N5365BRL 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The 1N53 Series belongs to onsemi's discrete Zener regulator product line, engineered for high-reliability voltage reference and clamping in harsh-environment power systems where stability, surge resilience, and long-term parametric consistency are critical.

FAQ

What is the nominal zener voltage and tolerance of the 1N5365BRL?

The 1N5365BRL has a nominal zener voltage of 36 V with a guaranteed tolerance of ±5%, meaning its actual zener voltage falls between 34.2 V and 37.8 V when measured at IZT = 11 mA and TA = 25°C. This tight tolerance supports accurate voltage regulation in feedback and reference circuits without external trimming. The 1N5365BRL achieves this via silicon-oxide passivated junction technology, which improves parameter stability over time and temperature.

How much power can the 1N5365BRL dissipate continuously?

The 1N5365BRL is rated for a maximum steady-state power dissipation of 5 W at TL = 25°C with 3/8″ lead length. Above 25°C, it must be derated at 40 mW/°C. At 36 V, this corresponds to a maximum DC zener current of approximately 139 mA under ideal thermal conditions. The 1N5365BRL uses a Surmetic 40 axial plastic package with 25 °C/W junction-to-lead thermal resistance to manage this dissipation without external heatsinking in most applications.

What is the zener impedance of the 1N5365BRL and why does it matter?

The 1N5365BRL has a maximum zener impedance (ZZT) of 30 Ω measured at IZT = 11 mA. This low dynamic impedance ensures minimal voltage variation under changing load current-critical for maintaining regulation accuracy in power supply feedback paths. For example, a 10 mA load step causes only ~0.3 V shift in output voltage. The 1N5365BRL achieves this via optimized junction geometry and oxide passivation, directly contributing to its use in precision reference and clamping roles.

Does the 1N5365BRL have surge protection capability?

Yes, the 1N5365BRL is rated for a non-repetitive peak surge current of 160 A at 8.3 ms pulse width, corresponding to up to 180 W of transient power absorption. This capability protects downstream circuitry from inductive kickback, lightning-induced transients, and power-line surges. The 1N5365BRL leverages its robust silicon-oxide passivated junction and axial Surmetic 40 package to sustain these events without degradation-making it suitable for industrial motor drives and telecom power interfaces.

Is the 1N5365BRL RoHS compliant and what package type does it use?

Yes, the 1N5365BRL is Pb-free and RoHS compliant, using onsemi's Surmetic 40 axial-lead plastic package (JEDEC CASE 017AA). The package features void-free transfer-molded thermosetting plastic, corrosion-resistant surfaces, and readily solderable leads rated for 260°C/10 s. The "RL" suffix denotes tape-and-reel packaging (4000 units per reel), making the 1N5365BRL compatible with high-speed automated assembly processes while meeting environmental compliance requirements.