Diodes Incorporated BZX84C3V6W-7-F

Overview

BZX84C3V6W-7-F from Diodes Incorporated is a 3.6 V, 200 mW surface-mount Zener diode in SOT-323 package, rated for 5 mA test current with 90 Ω dynamic impedance at 1 kHz and ±0.2 V zener voltage tolerance (3.4–3.8 V), used for precision voltage reference and overvoltage protection in low-power analog signal conditioning circuits.

For engineers reviewing the BZX84C3V6W-7-F datasheet, BZX84C3V6W-7-F pinout, BZX84C3V6W-7-F application, or BZX84C3V6W-7-F equivalent, key selection criteria include zener voltage accuracy at 5 mA, thermal resistance (625 K/W), reverse leakage (≤5.0 µA at 1.0 V), temperature coefficient (−3.5 to 0 mV/°C), and RoHS-compliant green molding compound compatibility with reflow soldering.

Technical Context

This Zener diode operates in reverse breakdown mode with a nominal zener voltage of 3.6 V at I_ZT = 5 mA, exhibiting low dynamic impedance (90 Ω) and minimal knee impedance (600 Ω at I_ZK = 1.0 mA). Its −3.5 to 0 mV/°C temperature coefficient ensures stable regulation across −65 °C to +125 °C ambient range.

The device uses planar die construction in an ultra-small SOT-323 package with matte tin-plated Alloy 42 leads, rated for 200 mW power dissipation on FR4 PCB with recommended pad layout, and meets J-STD-020D Level 1 moisture sensitivity.

Key Specifications

Pinout & Package

SOT-323 package with three terminals: anode (pin 1), cathode (pin 2), and no internal connection (pin 3). Cathode is marked by a band on the top surface; polarity follows standard Zener diode convention (cathode accepts positive bias in regulation mode).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5227BS-7-F and BZX84-C3V6,315, BZX84C3V6W-7-F offers optimal balance of tight voltage tolerance, ultra-small SOT-323 size, and Level 1 moisture robustness for space-constrained, high-reliability consumer and industrial designs.

Availability

BZX84C3V6W-7-F is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB port overvoltage protection, and low-power IoT node voltage reference requiring stable component supply and consistent parametric performance across production batches.

Supply support for BZX84C3V6W-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, cost-optimized components for industrial, computing, and consumer markets.

The BZX84 series belongs to Diodes' precision Zener diode product line, engineered for stable voltage regulation and transient suppression in compact, lead-free surface-mount applications.

FAQ

What is the maximum reverse current specification for BZX84C3V6W-7-F at 1.0 V?

The maximum reverse current (I_R) is 5.0 µA at V_R = 1.0 V and T_A = 25 °C, measured under specified test conditions. This value confirms minimal leakage in sub-threshold bias regions, critical for maintaining accuracy in high-impedance reference circuits and battery-sensitive applications.

Does BZX84C3V6W-7-F require moisture preconditioning before reflow soldering?

No - BZX84C3V6W-7-F is rated Moisture Sensitivity Level 1 per J-STD-020D, meaning it has unlimited floor life at ≤30 °C/60% RH and requires no baking prior to standard reflow profiles. This simplifies manufacturing logistics and eliminates risk of popcorning during assembly.

How does the temperature coefficient affect regulation accuracy over −40 °C to +85 °C?

With a temperature coefficient of −3.5 to 0 mV/°C at 5 mA, the zener voltage shift over 125 °C ΔT is ≤0.44 V worst-case. In practice, typical drift is <±15 mV across this range, supporting <±0.5% regulation accuracy in well-designed reference circuits with proper thermal layout.

Can BZX84C3V6W-7-F be used as a substitute for BZX84C3V3W-7-F in a 3.3 V reference design?

No - BZX84C3V6W-7-F has a nominal 3.6 V zener voltage (3.4–3.8 V range), exceeding the 3.3 V (3.1–3.5 V) range of BZX84C3V3W-7-F. Substitution would raise reference voltage by ≥0.1 V, potentially violating ADC input range or LDO feedback thresholds; verify circuit tolerance before interchange.