Diodes Incorporated BZX84C10S-7

Overview

BZX84C10S-7 from Diodes Incorporated is a 10 V, 200 mW surface-mount Zener diode in SOT-363 package, rated for 5 mA test current with ±6% tolerance (9.4–10.6 V), 20 Ω dynamic impedance at 5 mA, and 0.2 µA maximum reverse leakage at 7.0 V. It provides precision voltage regulation in low-power analog reference and overvoltage protection circuits.

For engineers reviewing the BZX84C10S-7 datasheet, BZX84C10S-7 pinout, BZX84C10S-7 application, or BZX84C10S-7 equivalent, key selection criteria include zener voltage tolerance, thermal resistance (625 °C/W), reverse leakage at VR, temperature coefficient (+4.5 to +8.0 mV/°C), and SOT-363 footprint compatibility with high-density PCB layouts.

Technical Context

This dual-anode, single-cathode Zener diode uses planar die construction for stable breakdown characteristics and low noise. Its SOT-363 package integrates two independent Zener elements sharing common cathode terminals (C1, C2), enabling dual-voltage referencing or redundancy in compact designs.

It operates across –65 °C to +150 °C with 200 mW power dissipation derated linearly above 25 °C ambient, and exhibits a positive temperature coefficient (+4.5 to +8.0 mV/°C) ensuring predictable drift in temperature-sensitive bias networks.

Key Specifications

Pinout & Package

SOT-363 (SC-70-6) plastic surface-mount package with six terminals: two anodes (A1, A2), two cathodes (C1, C2), and two no-connect (NC) pins. Molded UL 94V-0 plastic case; moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMSZ5240BT1G and BZX84C10LT1G, BZX84C10S-7 uniquely delivers dual 10 V Zener elements in one SOT-363 package - reducing component count and PCB area in multi-rail reference designs, while its +4.5 to +8.0 mV/°C TC supports stable operation in warming environments like enclosed automotive ECUs.

Availability

BZX84C10S-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power delivery reference, medical wearable battery monitoring, and automotive body control module applications requiring stable component supply and RoHS-compliant sourcing.

Supply support for BZX84C10S-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, communications, and consumer markets with high-reliability components.

The BZX84 series belongs to Diodes' precision Zener diode product line, engineered for voltage regulation, reference, and overvoltage protection in space-constrained, low-power applications across automotive, medical, and industrial electronics.

FAQ

What is the maximum reverse voltage (V_R) at which leakage current is specified for BZX84C10S-7?

The datasheet specifies 0.2 µA maximum reverse leakage current at V_R = 7.0 V. This value is measured under controlled 25 °C conditions and reflects the diode's blocking capability well below its 10 V breakdown threshold - critical for minimizing error in high-impedance reference dividers.

Can both Zener elements in the SOT-363 package be used simultaneously with independent cathodes?

No - the SOT-363 pinout shows separate cathodes C1 and C2, but the internal schematic and mechanical diagram confirm they are electrically isolated terminals. Both can be used independently, though typical implementation ties them together for dual-anode referencing. No internal connection exists between C1 and C2.

Is BZX84C10S-7 suitable for transient voltage suppression in automotive environments?

No - it is rated for 200 mW steady-state dissipation and lacks the energy-handling capability (e.g., 100 W+ peak power, defined waveform response) required for ISO 7637-2 or ISO 16750-2 load-dump suppression. It functions as a precision shunt regulator, not a TVS device.

How does the +4.5 to +8.0 mV/°C temperature coefficient affect long-term reference stability?

This positive coefficient means output voltage increases with temperature - e.g., +0.75 V drift over 100 °C span. For stable references, it must be compensated via circuit design (e.g., opposing TC components) or limited to narrow ambient ranges (<30 °C variation) where drift remains within 0.1 V.