Diodes Incorporated MMBZ5234BTS-7-F

Overview

MMBZ5234BTS-7-F from Diodes Incorporated is a triple-surface-mount Zener diode array in SOT363 package, providing three isolated 6.2 V ±5% Zener references with 7 Ω dynamic impedance at 20 mA, 5 µA reverse leakage at 4.0 V, and 200 mW total power dissipation. It serves as precision voltage reference and overvoltage clamp in compact power management circuits.

For engineers reviewing the MMBZ5234BTS-7-F datasheet, MMBZ5234BTS-7-F pinout, MMBZ5234BTS-7-F application, or MMBZ5234BTS-7-F equivalent, key selection criteria include zener voltage tolerance (±5%), low Z_ZT (7 Ω), triple-diode isolation, SOT363 thermal resistance (625 °C/W), and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This device integrates three electrically isolated Zener diodes in a single ultra-small SOT363 package, enabling space-constrained multi-rail voltage regulation or protection without inter-device coupling. Each diode operates independently with identical electrical specs: nominal 6.2 V breakdown, 20 mA test current, and 1000 Ω maximum Zener impedance at knee current (0.25 mA).

The array supports automated SMT assembly and meets stringent environmental requirements: lead-free, RoHS-compliant, halogen- and antimony-free ("Green"), and rated for operation from –65 °C to +150 °C. Thermal derating follows a linear curve from 200 mW at 25 °C to zero at 150 °C ambient.

Key Specifications

Pinout & Package

Package: SOT363 - ultra-small surface-mount plastic case (2.10 × 1.30 × 0.95 mm), UL 94V-0 rated, moisture sensitivity level 1, with matte tin-plated Alloy 42 leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5234BS-7-F and PDZ5.6B,115, the MMBZ5234BTS-7-F uniquely delivers triple-isolated 6.2 V regulation in one AEC-Q101-qualified SOT363 package - reducing BOM count by two devices and enabling compact, high-reliability multi-rail designs.

Availability

MMBZ5234BTS-7-F is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC analog inputs, and medical infusion pump power monitoring requiring stable component supply and long-term lifecycle support.

Supply support for MMBZ5234BTS-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The MMBZ52xxBTS series belongs to Diodes' precision Zener diode portfolio, engineered specifically for space-constrained, high-reliability applications demanding multi-channel voltage reference or protection in automotive, industrial, and medical systems.

FAQ

What is the maximum reverse voltage (V_R) that MMBZ5234BTS-7-F can withstand before breakdown?

The device exhibits a nominal Zener voltage of 6.2 V at 20 mA test current, with guaranteed breakdown occurring between 5.89 V and 6.51 V. At V_R = 4.0 V, reverse leakage remains ≤5.0 µA - confirming stable non-conduction below the specified knee region. No absolute "maximum reverse voltage" is defined beyond this; operation above 6.51 V enters full conduction.

Can MMBZ5234BTS-7-F be used in series or parallel configurations with other Zeners?

No - the three diodes are physically isolated but share a common thermal mass in the SOT363 package. Series or parallel connection would cause unequal current sharing and thermal runaway due to mismatched V_Z drift. Each diode must be biased independently with its own current-limiting resistor.

Is the SOT363 package compatible with standard reflow profiles for lead-free soldering?

Yes - the device is qualified for lead-free reflow per J-STD-020D Level 1 moisture sensitivity. Its matte tin finish and Alloy 42 leadframe support peak temperatures up to 260 °C for ≤60 seconds. Recommended profile follows IPC-J-STD-020, with ramp rate ≤3 °C/s and time above 217 °C limited to 60–150 s.

Does MMBZ5234BTS-7-F support bidirectional ESD protection?

No - it is a unidirectional Zener diode array optimized for forward-biased anode-to-cathode conduction during overvoltage events. For bidirectional ESD protection (e.g., USB data lines), TVS diodes such as D3V3M1U2LP-7 or SP1003-01UTG are required; this part lacks symmetrical breakdown characteristics.