Diodes Incorporated MMBZ5234BS-7-F

Overview

MMBZ5234BS-7-F from Diodes Incorporated is a dual isolated 6.2 V Zener diode in SOT-363 package, rated for 200 mW power dissipation, 7 Ω zener impedance at 20 mA, and 5.0 μA reverse leakage at 4.0 V, used for precision voltage regulation and overvoltage protection in space-constrained analog signal conditioning circuits.

For engineers reviewing the MMBZ5234BS-7-F datasheet, MMBZ5234BS-7-F pinout, MMBZ5234BS-7-F application, or MMBZ5234BS-7-F equivalent, key selection criteria include nominal zener voltage tolerance (±5%), low dynamic impedance, dual-diode isolation for bidirectional clamping, and RoHS-compliant SOT-363 footprint compatibility with high-density PCB layouts.

Technical Context

This device integrates two electrically isolated Zener diodes in a single ultra-small SOT-363 package, enabling symmetrical voltage reference or bidirectional transient suppression without cross-coupling. Each diode operates independently with identical 6.2 V nominal breakdown and shares thermal characteristics under common ambient conditions.

It employs planar die construction for stable zener voltage temperature coefficient and repeatable breakdown behavior across production lots. The 200 mW power rating is defined with FR4 board mounting per AP02001, and derating begins linearly above 25°C ambient per Figure 1.

Key Specifications

Pinout & Package

SOT-363 (SC-70-6) surface-mount package with six terminals: two anodes (A1, A2), two cathodes (C1, C2), and two no-connect (NC) pins - providing physical and electrical isolation between dual Zener elements.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C6V2LT1G and DMG1012T, MMBZ5234BS-7-F uniquely delivers matched dual 6.2 V Zener characteristics in one RoHS-compliant SOT-363, enabling compact, isolated voltage references where single-device integration and low dynamic impedance are critical.

Availability

MMBZ5234BS-7-F is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB port protection, low-power IoT voltage references, and automotive BCM wake-up detection requiring stable component supply and long-term lifecycle support.

Supply support for MMBZ5234BS-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 components for industrial, computing, and automotive markets since 1960.

The MMBZ52xxBS series belongs to Diodes' precision Zener diode product line, engineered specifically for space-constrained voltage regulation and bidirectional transient suppression in high-density PCB assemblies.

FAQ

What is the maximum reverse voltage that can be continuously applied across one Zener element without breakdown?

The MMBZ5234BS-7-F has a nominal zener voltage of 6.2 V with ±5% tolerance, meaning breakdown occurs between 5.89 V and 6.51 V. At 4.0 V reverse bias, leakage is guaranteed ≤5.0 μA - this is the highest voltage at which the device remains fully non-conductive under standard test conditions.

How does the dual-isolation architecture affect thermal interaction between the two Zener elements?

Electrical isolation between the two Zener elements is complete, but thermal coupling exists through the shared die substrate and leadframe. Power dissipation in one element raises junction temperature for both, limiting combined continuous power to ≤200 mW total - not 200 mW per element.

Can MMBZ5234BS-7-F be used for AC signal clipping applications?

Yes - its dual isolated structure allows symmetric clipping of AC signals around 0 V by connecting C1 to signal, A1 to +6.2 V, C2 to signal, and A2 to −6.2 V. The 7 Ω impedance ensures minimal distortion up to 10 kHz at ≤1 mA peak current.

Is the SOT-363 package compatible with standard reflow profiles for lead-free assembly?

Yes - the device meets J-STD-020D Level 1 moisture sensitivity and is qualified for standard Pb-free reflow profiles (peak 260°C, 60-second duration). Matte tin plating ensures reliable solder wetting without voiding or dewetting issues.