Diodes Incorporated BZX84C9V1Q-13-F

Overview

BZX84C9V1Q-13-F from Diodes Incorporated is a 9.1 V, 350 mW surface-mount Zener diode in SOT23 package, designed for precision voltage regulation and overvoltage protection in low-power analog and digital circuits. It delivers ±5.5% Zener voltage tolerance at 5 mA test current, exhibits 15 Ω dynamic impedance at 5 mA, and maintains stable operation from –65°C to +150°C.

For engineers reviewing the BZX84C9V1Q-13-F datasheet, BZX84C9V1Q-13-F pinout, BZX84C9V1Q-13-F application, or BZX84C9V1Q-13-F equivalent, key selection criteria include nominal Zener voltage (9.1 V), power dissipation (350 mW), Zener impedance (15 Ω @ 5 mA), reverse leakage (0.5 µA @ 6 V), and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 9.1 V at 5 mA test current, with a guaranteed range of 8.5–9.6 V. Its low 15 Ω Zener impedance ensures minimal voltage variation under load changes, while its 350 mW power rating supports stable regulation in compact PCB layouts.

The device uses planar die construction and is qualified to AEC-Q101 standards, confirming suitability for automotive electronics. Its SOT23 package features matte tin-plated alloy 42 leads, RoHS-compliant, halogen- and antimony-free "Green" molding compound, and moisture sensitivity level 1.

Key Specifications

Pinout & Package

Package: SOT23 - ultra-small, surface-mount plastic package with three terminals, optimized for automated pick-and-place assembly and reflow soldering. Dimensions: 2.90 mm × 1.30 mm × 1.03 mm (L × W × H); weight ≈ 0.008 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMSZ5240B-TP and BZX84-C9V1,115, the BZX84C9V1Q-13-F uniquely balances AEC-Q101 compliance, 350 mW power capability, and 15 Ω impedance-making it optimal for automotive modules requiring both reliability and regulation fidelity in tight thermal envelopes.

Availability

BZX84C9V1Q-13-F is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor signal chains, and portable medical diagnostics requiring stable component supply, consistent Zener voltage performance, and AEC-Q101 traceability.

Supply support for BZX84C9V1Q-13-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, manufacturing, and sales operations across Asia, Europe, and North America.

The BZX84 series belongs to Diodes' automotive-qualified Zener diode product line, engineered specifically for voltage reference, regulation, and transient suppression in harsh-environment electronics-including engine control, ADAS sensors, and infotainment power rails.

FAQ

What is the maximum reverse voltage before breakdown for BZX84C9V1Q-13-F?

The BZX84C9V1Q-13-F has a nominal Zener voltage of 9.1 V at 5 mA test current, with a guaranteed range of 8.5 V to 9.6 V. Breakdown begins near the minimum specified value (8.5 V), and full regulation occurs within this band. It is not rated for continuous operation above 9.6 V in reverse bias without exceeding power limits.

Is BZX84C9V1Q-13-F suitable for use in high-frequency signal paths?

No - this Zener diode is not optimized for RF or high-speed switching. Its typical total capacitance is ~5 pF at 1 V reverse bias (per Fig. 5), but it lacks specified frequency response or switching time data. It is intended for DC/low-frequency voltage reference and protection, not signal coupling or AC clamping above ~1 MHz.

How does the "Q" suffix in BZX84C9V1Q-13-F affect its specifications?

Per Diodes Incorporated's ordering guide, the "Q" denotes automotive-grade qualification (AEC-Q101). All electrical and thermal specs match the standard BZX84C9V1-13-F, but the "Q" version undergoes additional stress testing (HTOL, temperature cycling, HAST) and receives lot-level PPAP documentation and extended traceability for automotive customers.

Can BZX84C9V1Q-13-F replace a 9.1 V Zener in a through-hole design?

Yes - functionally, it provides identical Zener voltage and regulation behavior. However, direct replacement requires PCB redesign: the SOT23 package (2.9 mm × 1.3 mm) differs mechanically from common through-hole packages like DO-35. Thermal performance and mounting process (reflow vs. wave solder) also differ and must be validated in the target application.