Diodes Incorporated BZX84C24S-7-F

Overview

BZX84C24S-7-F from Diodes Incorporated is a dual 200 mW surface-mount Zener diode in SOT-363 package, rated for nominal zener voltage 24 V (22.8–25.6 V at 5 mA), with maximum zener impedance 70 Ω at test current and 250 Ω at knee current, operating across –65 °C to +150 °C. It provides precision voltage regulation in compact power management circuits such as voltage reference shunts and overvoltage protection in portable instrumentation.

For engineers reviewing the BZX84C24S-7-F datasheet, BZX84C24S-7-F pinout, BZX84C24S-7-F application, or BZX84C24S-7-F equivalent, key selection criteria include zener voltage tolerance, dynamic impedance at IZT/IZK, thermal resistance (625 °C/W), reverse leakage (≤0.1 µA at 16.8 V), and SOT-363 footprint compatibility with high-density PCB layouts.

Technical Context

This dual-element Zener diode integrates two independent 24 V zener junctions in a single SOT-363 package, sharing no internal connection-each anode-cathode pair operates independently. Its planar die construction ensures stable breakdown characteristics and low temperature coefficient (18.4 to 22.0 mV/°C) under regulated bias conditions.

The device is characterized at 25 °C with 5 mA test current (IZT) and 1 mA knee current (IZK), delivering specified zener voltage range, dynamic impedance (ZZT = 70 Ω, ZZK = 250 Ω), and ultra-low reverse leakage (IR ≤ 0.1 µA at VR = 16.8 V), enabling reliable clamping in low-power analog signal conditioning.

Key Specifications

Pinout & Package

Package: SOT-363 (SC-70-6), 6-pin ultra-small outline surface-mount package with dual independent Zener elements. Molded plastic case, UL 94V-0 rated, lead-free matte tin plating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84C24S-7-F, MMBZ5242BS-7-F offers higher power but sacrifices dual integration and tight voltage tolerance, while BZX84C24LT1G improves impedance and power but eliminates the key dual-element advantage for space-constrained dual-rail designs.

Availability

BZX84C24S-7-F is available at Aetrix Electronics and suitable for voltage reference shunts, overvoltage clamps, portable instrumentation supplies, and temperature-stable bias generators requiring stable component supply and RoHS-compliant packaging.

Supply support for BZX84C24S-7-F 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for industrial, computing, and consumer markets.

The BZX84C series belongs to Diodes' precision Zener diode product line, engineered for stable voltage regulation in space-constrained, low-power applications demanding tight VZ tolerance and low leakage.

FAQ

What is the maximum power dissipation for BZX84C24S-7-F at 100°C ambient?

At 100°C ambient, the device's power dissipation must be derated linearly from 200 mW at 25°C using its 625 °C/W thermal resistance. The allowable power is 200 mW × (1 − (100 − 25)/625) = 176 mW. This value assumes mounting on FR4 with Diodes' recommended pad layout per AP02001.

How are the two Zener elements configured internally in the SOT-363 package?

The two Zener elements are fully independent-no internal connection exists between them. Pins 2/C1 and 3/A1 form one Zener (cathode-anode), while Pins 4/A2 and 5/C2 form the second (anode-cathode). Pins 1 and 6 are unconnected, confirmed by the mechanical drawing and schematic on page 1 of DS30108 Rev. 17-2.

Is BZX84C24S-7-F suitable for use in automotive under-hood environments?

Yes-its –65 °C to +150 °C operating temperature range and qualified moisture sensitivity level (J-STD-020D Level 1) meet baseline requirements for non-safety-critical under-hood applications. However, it is not AEC-Q200 qualified; design validation per system-level stress testing is required.

What does the "-7-F" suffix indicate in the part number?

The "-7-F" suffix denotes tape-and-reel packaging: 3000 units per reel, with lead-free (RoHS-compliant) finish and Diodes' standard SOT-363 carrier tape specification per AP02007. It does not affect electrical characteristics or reliability grading.