Diodes Incorporated BZX84C5V1S-7

Overview

BZX84C5V1S-7 from Diodes Incorporated is a 5.1 V, 200 mW surface-mount Zener diode in SOT-363 package, rated for 5 mA test current with 60 Ω dynamic impedance at 1 kHz and ±1.2 mV/°C temperature coefficient. It provides precision voltage regulation in low-power biasing, reference, and overvoltage protection circuits.

For engineers reviewing the BZX84C5V1S-7 datasheet, BZX84C5V1S-7 pinout, BZX84C5V1S-7 application, or BZX84C5V1S-7 equivalent, key selection criteria include zener voltage tolerance (±0.3 V), reverse leakage (≤2.0 µA at 2.0 V), thermal resistance (625 °C/W), and SOT-363 dual-diode configuration with center-tap anode layout.

Technical Context

This dual-anode Zener diode uses planar die construction for stable breakdown characteristics and low noise performance. Its SOT-363 package integrates two independent Zener junctions sharing a common cathode terminal (Pin 3), enabling compact dual-rail reference or bidirectional clamping topologies.

The device operates across –65 °C to +150 °C with 625 °C/W junction-to-ambient thermal resistance on FR4 PCBs using recommended pad layout. Zener voltage is specified at 5 mA test current with 60 Ω impedance at 1 kHz, and exhibits a temperature coefficient of –2.7 to +1.2 mV/°C - critical for temperature-stable reference designs.

Key Specifications

Pinout & Package

SOT-363 is a 6-pin, dual-row surface-mount package measuring 2.20 × 1.35 × 0.95 mm (L × W × H), with molded plastic case rated UL 94V-0 and moisture sensitivity level 1 per J-STD-020D.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5221BS-7-F and BZX84C5V1LT1G, BZX84C5V1S-7 uniquely supports dual-rail referencing and bidirectional clamping in one SOT-363 footprint, delivering tighter voltage tolerance and lower dynamic impedance than alternatives - critical for compact, high-accuracy analog subsystems.

Availability

BZX84C5V1S-7 is available at Aetrix Electronics and suitable for low-power voltage reference, ESD protection, overvoltage detection, and current-sense bias applications requiring stable component supply and long-term lifecycle continuity.

Supply support for BZX84C5V1S-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, with design centers across Asia and manufacturing in China, Taiwan, and the Philippines.

The BZX84 series belongs to Diodes Inc.'s precision Zener diode product line, engineered specifically for space-constrained, low-power voltage regulation and protection in consumer, computing, and industrial electronics.

FAQ

What is the maximum continuous reverse current the BZX84C5V1S-7 can handle before thermal runaway?

The device is rated for 200 mW power dissipation at 25 °C ambient. At 5.1 V, this corresponds to ~39 mA continuous current. Derating begins above 25 °C per the 625 °C/W thermal resistance curve - at 75 °C ambient, max safe current drops to ~27 mA. Exceeding these limits risks parametric shift or junction failure.

How is the SOT-363 pinout configured for dual-Zener operation?

Per Diodes Inc. DS30108 Rev. 17, Pins 2 and 5 are independent cathodes; Pin 3 is the common anode for both Zener elements. Pins 1 and 6 are unconnected. This allows either parallel connection for increased power handling or separate regulation of two rails referenced to the same anode node.

Does the BZX84C5V1S-7 meet automotive AEC-Q200 stress testing requirements?

No - the BZX84C5V1S-7 is not AEC-Q200 qualified. It is rated for industrial temperature range (–65 °C to +150 °C) but lacks the extended reliability testing, lot traceability, and failure analysis reporting required for automotive applications. For AEC-Q200 compliance, consider Diodes Inc.'s AZ series Zeners.

Can the BZX84C5V1S-7 be used in AC signal clipping applications?

Yes - its dual-cathode, common-anode structure supports symmetrical clipping of AC signals centered around the common anode. With appropriate series resistance, it clips positive excursions at +5.1 V and negative excursions at –5.1 V relative to the anode node, making it suitable for audio and sensor signal conditioning.