Diodes Incorporated MMBZ5225BTS-7-F

Overview

MMBZ5225BTS-7-F from Diodes Incorporated is a triple-surface-mount Zener diode array with three isolated 3.0 V ±5% Zener elements in a single SOT363 package, rated for 200 mW total power dissipation and 1600 Ω maximum Zener impedance at 20 mA test current, commonly used for voltage regulation and ESD protection in compact DC power rails and signal conditioning circuits.

For engineers reviewing the MMBZ5225BTS-7-F datasheet, MMBZ5225BTS-7-F pinout, MMBZ5225BTS-7-F application, or MMBZ5225BTS-7-F equivalent, key selection criteria include nominal Zener voltage (3.0 V), reverse leakage (≤50 µA at 1.0 V), thermal resistance (625 °C/W), and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This device integrates three independent Zener diodes in one ultra-small SOT363 package, each with identical electrical characteristics: nominal Zener voltage of 3.0 V (2.85–3.15 V range), test current of 20 mA, and maximum Zener impedance of 1600 Ω at I_ZT. It operates across –65 °C to +150 °C and meets AEC-Q101 stress testing requirements for high-reliability automotive applications.

The diodes share no internal connection - all anodes and cathodes are electrically isolated. Each element exhibits ≤50 µA reverse leakage at 1.0 V and forward voltage of 0.9 V at 10 mA, enabling bidirectional clamping and precision reference functions in low-power analog monitoring paths.

Key Specifications

Pinout & Package

Package: SOT363 - six-terminal, ultra-small plastic surface-mount package with 0.65 mm lead pitch, 2.10 mm × 1.30 mm footprint, and 0.90 mm height; moisture sensitivity level 1 per J-STD-020D.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5225BTS-7-F, the dual-element MMBZ5225BS-7-F saves no board area in triple-rail use cases, while BZX84-C3V0LT1G increases assembly cost and footprint by ~2.5× - making the triple-isolated SOT363 array optimal for space-constrained, high-reliability designs.

Availability

MMBZ5225BTS-7-F is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and IoT power supervision requiring stable component supply and long-term lifecycle support.

Supply support for MMBZ5225BTS-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-performance, high-reliability components for automotive, industrial, and consumer markets.

The MMBZ52xxBTS series was designed specifically for compact, multi-rail voltage regulation and ESD protection in automotive ECUs and portable electronics - emphasizing AEC-Q101 compliance, ultra-small packaging, and tight Zener tolerance.

FAQ

What is the maximum continuous power dissipation per Zener element in MMBZ5225BTS-7-F?

The device is rated for 200 mW total power dissipation across all three Zeners. Since elements are isolated and thermally coupled on the same die, derating must be applied collectively - no single element may exceed 200 mW, and simultaneous full-power operation of all three requires ambient temperature reduction per the Fig. 1 derating curve.

Can MMBZ5225BTS-7-F be used as a bidirectional ESD protector?

Yes - each Zener element conducts in reverse breakdown (clamping) and forward conduction (0.9 V @ 10 mA), enabling symmetrical ±V_Z clamping when paired anode-to-cathode across a differential line, such as USB or RS-485 data pairs.

Is the SOT363 package compatible with standard reflow profiles?

Yes - the SOT363 package is qualified for lead-free reflow per JEDEC J-STD-020D Level 1, supporting peak temperatures up to 260 °C with 60-second duration above 220 °C, and has been validated with standard Pb-free solder paste and profile ramp/soak/reflow cycles.

How does the 1600 Ω Zener impedance affect regulation performance?

A 1600 Ω impedance at 20 mA means a 1 mA load change causes ~1.6 V shift in Zener voltage - indicating this device is optimized for low-current reference or clamping, not high-precision regulation; it is best suited for protection or coarse voltage thresholding, not feedback-loop references.