Diodes Incorporated BZX84C30TS-7-F

Overview

BZX84C30TS-7-F from Diodes Incorporated is a triple-surface-mount Zener diode array with three isolated 30 V Zener elements in a single SOT-363 package, rated for 200 mW total power dissipation, 80 Ω maximum Zener impedance at 2 mA, and reverse current ≤0.1 µA at 21 V, used for precision voltage regulation and overvoltage protection in compact DC power rails.

For engineers reviewing the BZX84C30TS-7-F datasheet, BZX84C30TS-7-F pinout, BZX84C30TS-7-F application, or BZX84C30TS-7-F equivalent, key selection criteria include nominal Zener voltage (30.0 V), tolerance (±6.7%), thermal resistance (625 °C/W), low leakage (<0.1 µA), and triple-diode integration for space-constrained biasing and clamping circuits.

Technical Context

This device implements three independent silicon planar Zener junctions in a monolithic SOT-363 housing, each operating in reverse breakdown with specified knee current (I_ZK = 0.5 mA) and test current (I_ZT = 2 mA). The Zener voltage exhibits a positive temperature coefficient of +24.4 mV/°C at I_ZT = 5 mA, enabling predictable drift compensation in reference designs.

It supports stable regulation under pulsed conditions per short-duration test methodology (Note 5), with capacitance <10 pF at 1 V reverse bias and derated power dissipation down to zero at 150 °C ambient per Fig. 1. No series resistor or external thermal management is required for operation within its 25 °C–150 °C junction range.

Key Specifications

Pinout & Package

SOT-363 (SC-70-6) ultra-small surface-mount package with molded plastic body (UL 94V-0), 0.006 g mass, and matte tin-plated Alloy 42 leadframe. Moisture sensitivity level 1 per J-STD-020D.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5262BS-7-F and BZX84C30LT1G, BZX84C30TS-7-F uniquely delivers three isolated 30 V Zener functions in one SOT-363, reducing component count by two-thirds and eliminating inter-element crosstalk in safety-critical monitoring paths.

Availability

BZX84C30TS-7-F is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB-C power delivery systems, automotive body control modules, and medical infusion pump voltage monitors requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BZX84C30TS-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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the US.

This part belongs to the BZX84C series of triple Zener diode arrays, engineered specifically for high-density voltage regulation and overvoltage protection in space-constrained consumer, industrial, and automotive electronics.

FAQ

What is the maximum reverse voltage this device can withstand before breakdown?

The BZX84C30TS-7-F has a nominal Zener voltage of 30.0 V with a guaranteed range of 28.0 V to 32.0 V at 2 mA test current. Its absolute maximum non-destructive reverse voltage is not specified separately; operation above 32.0 V risks exceeding its 200 mW power limit unless current is strictly limited by external series resistance.

Can this device be used for bidirectional ESD protection?

No-it is a unidirectional Zener diode array optimized for reverse-bias regulation and clamping. For bidirectional ESD protection, a dedicated TVS diode such as the D3V3M1U2SOT-7-F is required, as Zener devices lack symmetric breakdown characteristics and specified ESD pulse handling capability.

Is the SOT-363 package compatible with standard reflow profiles?

Yes-the SOT-363 package is rated for moisture sensitivity level 1 per J-STD-020D and supports industry-standard Pb-free reflow profiles (peak 260 °C, 60-second duration). Its UL 94V-0 mold compound and matte tin plating ensure reliable solder joint formation without delamination or voiding.

How does temperature affect the Zener voltage accuracy?

At I_ZT = 5 mA, the temperature coefficient is +24.4 mV/°C. Over a 100 °C range (−25 °C to +75 °C), this introduces ±2.44 V drift from nominal 30.0 V-approximately ±8.1%. For precision applications, system-level calibration or use at fixed temperature is recommended.