Diodes Incorporated BZX84C15S-7

Overview

BZX84C15S-7 from Diodes Incorporated is a 15 V, 200 mW surface-mount Zener diode in SOT-363 package, rated for ±0.6 V tolerance at 5 mA test current, with 30 Ω dynamic impedance at 5 mA and 200 Ω at 1 mA, used for precision voltage regulation and overvoltage protection in low-power analog circuits.

For engineers reviewing the BZX84C15S-7 datasheet, BZX84C15S-7 pinout, BZX84C15S-7 application, or BZX84C15S-7 equivalent, key selection factors include nominal Zener voltage (15 V), temperature coefficient (+9.2 to +13.0 mV/°C), reverse leakage (<0.1 µA at 10.5 V), power derating above 25°C, and SOT-363 dual-diode layout compatibility with space-constrained PCBs.

Technical Context

This dual-anode, common-cathode Zener pair operates in reverse breakdown mode with tightly controlled voltage regulation across -65°C to +150°C ambient range. Its planar die construction ensures stable Zener characteristics and low noise performance under DC bias.

The device delivers 15 V nominal regulation at I_ZT = 5 mA with ±0.6 V tolerance, exhibits a positive temperature coefficient (+9.2 to +13.0 mV/°C), and maintains <0.1 µA reverse leakage at VR = 10.5 V - enabling stable reference generation in battery-powered sensor interfaces.

Key Specifications

Pinout & Package

SOT-363 package: 6-terminal surface-mount plastic case (UL 94V-0), 2.0–2.2 mm width, 1.8–2.2 mm length, 0.1–0.3 mm thickness; dual Zener configuration with isolated anodes and shared cathode terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMSZ5245B-7-F and BZX84C15LT1G, BZX84C15S-7 uniquely integrates two matched 15 V Zeners in one SOT-363 package - reducing component count and improving thermal tracking in dual-supply monitoring, while trading off absolute power rating for density and matching.

Availability

BZX84C15S-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power delivery clamp, and low-power wearable battery monitor applications requiring stable component supply and RoHS-compliant sourcing.

Supply support for BZX84C15S-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 automotive, industrial, computing, and consumer markets with high-reliability components.

The BZX84 series belongs to Diodes' precision Zener diode product line, engineered for voltage reference, regulation, and overvoltage protection in space-constrained, low-power applications where tight tolerance and thermal stability are critical.

FAQ

What is the maximum reverse voltage (V_R) before significant leakage occurs?

The BZX84C15S-7 exhibits <0.1 µA reverse leakage at V_R = 10.5 V, and its specified maximum reverse voltage is 10.5 V per the Electrical Characteristics table. Operation above this voltage enters the Zener breakdown region, where controlled conduction begins at the nominal 15 V Zener point.

Can BZX84C15S-7 be used in series or parallel configurations?

Yes - its dual-anode, common-cathode SOT-363 layout supports parallel connection of both Zeners for improved current sharing or series connection (anode-to-cathode) to achieve ~30 V regulation. However, thermal coupling between elements must be considered, as mismatched heating degrades voltage matching.

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

Yes - the device is rated Moisture Sensitivity Level 1 (per J-STD-020D) and uses matte tin plating compliant with IPC-J-STD-020. It supports standard Pb-free reflow profiles up to peak temperatures of 260°C, with no pre-bake required.

How does temperature affect regulation accuracy in real-world operation?

With a temperature coefficient of +9.2 to +13.0 mV/°C, the Zener voltage increases by ~12 mV per °C rise above 25°C. Over a -40°C to +85°C range, this introduces up to ±1.5 V drift - requiring either thermal compensation or system-level calibration for sub-1% accuracy.