Diodes Incorporated BZX84C3V0S-7

Overview

BZX84C3V0S-7 from Diodes Incorporated is a 3.0 V, 200 mW surface-mount Zener diode in SOT-363 package, rated for 5 mA test current with 95 Ω dynamic impedance at 1 kHz, ±0.2 V zener voltage tolerance, and -3.5 to 0 mV/°C temperature coefficient-used for precision voltage reference and overvoltage protection in low-power analog sensor interfaces.

For engineers reviewing the BZX84C3V0S-7 datasheet, BZX84C3V0S-7 pinout, BZX84C3V0S-7 application, or BZX84C3V0S-7 equivalent, key selection criteria include zener voltage accuracy at 5 mA, thermal resistance (625 °C/W), reverse leakage (≤10 µA at 1.0 V), and SOT-363 footprint compatibility with high-density PCB layouts.

Technical Context

This dual-diode Zener operates in reverse breakdown mode with tightly controlled nominal voltage of 3.0 V (2.8–3.2 V range) and exhibits low dynamic impedance (95 Ω at I_ZT = 5 mA, f = 1 kHz), enabling stable regulation under light-load conditions. Its ultra-small SOT-363 package integrates two independent Zener elements sharing common cathode terminals.

The device features a negative temperature coefficient (-3.5 to 0 mV/°C) and is characterized for operation across -65 °C to +150 °C ambient, with power derating beginning above 25 °C per the published curve. Reverse leakage remains ≤10 µA up to 1.0 V reverse bias, supporting low-quiescent-current biasing schemes.

Key Specifications

Pinout & Package

Package: SOT-363 (SC-70-6), 6-pin ultra-small outline transistor package with molded plastic case (UL 94V-0), moisture sensitivity level 1, and matte tin-plated Alloy 42 leadframe.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5226BS-7-F and BZX84C3V3S-7-F, BZX84C3V0S-7 uniquely delivers dual 3.0 V Zeners in one SOT-363, minimizing footprint and inter-device mismatch-critical for matched-clamp designs in differential signaling and precision biasing.

Availability

BZX84C3V0S-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C port protection, low-power IoT reference generation, and automotive body control module biasing requiring stable component supply and RoHS-compliant sourcing.

Supply support for BZX84C3V0S-7 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 Taiwan and China.

The BZX84C series belongs to Diodes' precision Zener diode product line, engineered specifically for compact, high-reliability voltage regulation and ESD protection in space-constrained consumer, computing, and industrial applications.

FAQ

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

The BZX84C3V0S-7 has a nominal zener voltage of 3.0 V with a guaranteed breakdown range of 2.8 V to 3.2 V at 5 mA test current. It is not rated for forward conduction beyond 0.9 V at 10 mA, and reverse voltage exceeding 3.2 V will initiate controlled breakdown-intended operation, not failure.

Can this device be used in place of a single-Zener diode like BZX84C3V0LT1G?

Yes, but only one of its two Zener elements (e.g., C1/A1 pair) should be used; the second element (C2/A2) must be left unconnected or terminated per design. The SOT-363 package has different pinout and thermal profile than SOT-23, so PCB layout and thermal validation are required.

Is the SOT-363 package compatible with standard reflow soldering processes?

Yes-the BZX84C3V0S-7 meets J-STD-020D Level 1 moisture sensitivity and is qualified for lead-free reflow per JEDEC specifications. Its matte tin finish and Alloy 42 leadframe ensure reliable wetting and joint integrity at peak temperatures up to 260 °C.

Does this Zener diode have specified capacitance for high-frequency filtering?

No specific capacitance value is provided for BZX84C3V0S-7 in the datasheet. However, based on Figure 4 (typical total capacitance vs. nominal zener voltage), a 3.0 V Zener falls near the 10–20 pF range at 1 MHz and 1 V reverse bias-suitable for low-speed signal clamping but not RF filtering.