onsemi 1N5223BRL

Overview

1N5223BRL from ON Semiconductor is a 500 mW, 2.7 V ±5% axial-lead hermetically sealed glass Zener diode in DO-35 (Case 299) package, rated for –65°C to +200°C operation, with 1300 Ω max zener impedance at 20 mA and –0.08 %/°C temperature coefficient - used for precision low-voltage reference and overvoltage clamping in power supply feedback loops.

For engineers reviewing the 1N5223BRL datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, thermal derating behavior, leakage current at 75 V, forward voltage limit (1.1 V @ 200 mA), and DO-35 mechanical handling guidelines - all confirmed from ON Semiconductor's official 1N5221B Series datasheet Rev. 2 (2001).

Technical Context

This device implements a silicon-oxide passivated PN junction optimized for stable reverse-bias regulation at low voltages. Its double-slug, metallurgically bonded glass construction ensures hermetic sealing and high ESD robustness (>16 kV HBM), enabling reliable operation in harsh industrial environments.

The 1N5223BRL operates with a nominal zener voltage of 2.7 V measured at IZT = 20 mA under thermal equilibrium (TL = 30°C ±1°C, 3/8″ lead length). Its negative temperature coefficient (–0.08 %/°C) and low 0.25 µA leakage at VR = 1 V support predictable drift compensation in analog reference circuits.

Key Specifications

Pinout & Package

DO-35 (Case 299) axial-lead hermetically sealed glass package with cathode indicated by a polarity band. Leads are corrosion-resistant and readily solderable; maximum soldering temperature is 230°C at 1/16″ from case for 10 seconds.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N5223BRL, 1N5223BTA offers identical performance in a different packaging format ideal for hand-soldering, while BZX55C2V7 trades tighter TC and lower impedance for broader vendor availability - making 1N5223BRL optimal for designs demanding consistent low-drift 2.7 V regulation.

Availability

1N5223BRL is available at Aetrix Electronics and suitable for industrial sensor interfaces, embedded power management, and automotive body control modules requiring stable component supply and long-term obsolescence mitigation.

Supply support for 1N5223BRL 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

ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power management, analog, and sensor solutions for automotive, industrial, and cloud infrastructure markets.

The 1N5221B Series was designed as a high-reliability, hermetically sealed Zener family targeting mission-critical voltage reference and protection functions in extended-temperature environments.

FAQ

What is the exact zener voltage tolerance and test condition for 1N5223BRL?

The 1N5223BRL has a ±5% zener voltage tolerance, specified as 2.565 V (min) to 2.835 V (max) at I_ZT = 20 mA, with device junction at thermal equilibrium and lead temperature held at 30°C ±1°C using 3/8″ lead length - per ON Semiconductor's 1N5221B Series datasheet Rev. 2.

Can 1N5223BRL be used in surface-mount designs?

No - the 1N5223BRL uses an axial-lead DO-35 (Case 299) glass package and is not compatible with SMT reflow processes. It requires through-hole mounting with leads bent to fit PCB holes; its maximum soldering temperature is 230°C at 1/16″ from the case for 10 seconds.

What is the maximum allowable reverse leakage current for 1N5223BRL?

The 1N5223BRL exhibits ≤0.25 µA reverse leakage current at V_R = 1 V and T_A = 25°C. At elevated temperatures (e.g., +125°C), leakage increases but remains below 1 µA per Figure 3 - critical for minimizing error in high-impedance reference networks.

How does thermal derating affect 1N5223BRL's power handling capability?

The 1N5223BRL's steady-state power dissipation derates linearly above 75°C ambient: from 500 mW at T_L ≤ 75°C to zero at ~200°C, at 4.0 mW/°C - per Figure 1. Effective heat sinking via 3/8″ lead length is essential to maintain safe junction temperature.

Is 1N5223BRL suitable for automotive under-hood applications?

Yes - the 1N5223BRL is rated for –65°C to +200°C operating and storage temperature, and its hermetically sealed glass package resists humidity, vibration, and chemical exposure. It meets automotive-grade reliability expectations when mounted with appropriate thermal relief and mechanical strain relief.