Diodes Incorporated BZX84C3V6S-7

Overview

BZX84C3V6S-7 from Diodes Incorporated is a 3.6 V, 200 mW surface-mount Zener diode in SOT-363 package, rated for 5 mA test current with 90 Ω dynamic impedance at 1 kHz, ±0.2 V zener voltage tolerance, and -3.5 to 0 mV/°C temperature coefficient. It provides precision voltage reference and overvoltage clamping in low-power analog sensing circuits.

For engineers reviewing the BZX84C3V6S-7 datasheet, BZX84C3V6S-7 pinout, BZX84C3V6S-7 application, or BZX84C3V6S-7 equivalent, key selection criteria include zener voltage accuracy at 5 mA, thermal resistance (625 °C/W), reverse leakage (<5 µA at 1 V), ultra-small SOT-363 footprint, and RoHS-compliant matte tin plating.

Technical Context

This dual-anode, single-cathode Zener diode uses planar die construction for stable breakdown characteristics and low noise. Its 3.6 V nominal zener voltage is specified at I_ZT = 5 mA with ±0.2 V tolerance, and exhibits 90 Ω impedance at 1 kHz - critical for low-ripple regulation in signal conditioning paths.

The device operates across -65 °C to +150 °C and derates linearly above 25 °C ambient, maintaining 200 mW dissipation only up to 25 °C with full derating to zero at 150 °C. Its 625 °C/W junction-to-ambient thermal resistance assumes FR4 PCB mounting per Diodes Inc. recommended pad layout.

Key Specifications

Pinout & Package

SOT-363 package with six terminals: two anodes (A1, A2), two cathodes (C1, C2), and two no-connect (NC) pins. The device shares common cathode connection internally between C1 and C2, while A1 and A2 are electrically isolated anodes - enabling dual-Zener configuration or redundancy.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5227BS-7-F and BZX84C3V6LT1G, BZX84C3V6S-7 offers superior voltage accuracy (±0.2 V vs. ±5% or ±5%), identical Z_ZT performance, and unique dual-anode architecture - making it optimal for compact, precision dual-reference or hysteresis designs where SOT-363 size is critical.

Availability

BZX84C3V6S-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB port protection, low-power IoT voltage monitoring, and automotive BCM wake-up circuits requiring stable component supply and RoHS compliance.

Supply support for BZX84C3V6S-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, serving industrial, computing, consumer, and communications markets with high-reliability components.

The BZX84C series belongs to Diodes Inc.'s precision Zener diode product line, designed specifically for voltage regulation, reference, and overvoltage protection in space-constrained, low-power applications requiring tight tolerances and thermal stability.

FAQ

What is the maximum continuous reverse voltage (V_RWM) for BZX84C3V6S-7?

The device does not specify a dedicated V_RWM rating; its rated reverse working voltage is defined by the 3.4–3.8 V zener range at 5 mA. For reliable clamping, applied reverse voltage should remain below 3.4 V to avoid conduction, with peak transient excursions limited by power derating curves and thermal constraints.

Can BZX84C3V6S-7 be used in a dual-Zener configuration for bidirectional ESD protection?

Yes - the SOT-363 package contains two independent Zener junctions sharing a common cathode (C1/C2). Connecting A1 and A2 to differential lines (e.g., USB D+/D−) with shared cathode to ground creates symmetrical ±3.6 V clamping, validated by Diodes Inc. application notes for low-capacitance data-line protection.

Is the SOT-363 package compatible with standard reflow profiles for lead-free assembly?

Yes - the device meets J-STD-020D Level 1 moisture sensitivity and is qualified for standard Pb-free reflow profiles (peak 260 °C, 10-second dwell). Its matte tin plating and UL 94V-0 mold compound ensure robust solder joint formation and thermal reliability during manufacturing.

How does the -3.5 to 0 mV/°C temperature coefficient affect circuit accuracy over temperature?

At 3.6 V nominal, this coefficient translates to -0.126 to 0 mV/°C drift. Over a -40 to +85 °C range (125 °C ΔT), total drift is -15.75 to 0 mV - well within ±0.2 V initial tolerance, making it suitable for applications needing <0.5% total voltage error across industrial temperature ranges.