Diodes Incorporated MMBZ5246BTS-7-F

Overview

MMBZ5246BTS-7-F from Diodes Incorporated is a triple-surface-mount Zener diode array in SOT363 package, providing three isolated 16 V ±5% Zener references with 7.8 mA test current, 17 Ω dynamic impedance at 20 mA, and ≤0.1 µA reverse leakage at 12 V. It delivers precision voltage regulation in space-constrained power management and signal conditioning circuits.

For engineers reviewing the MMBZ5246BTS-7-F datasheet, MMBZ5246BTS-7-F pinout, MMBZ5246BTS-7-F application, or MMBZ5246BTS-7-F equivalent, key selection criteria include nominal Zener voltage (16 V), Zener impedance (17 Ω @ 20 mA), power dissipation (200 mW), 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 compact multi-rail voltage reference or overvoltage protection without inter-device coupling. Each diode operates independently with identical electrical specs: 16 V nominal Zener voltage, 200 mW total power rating, and thermal derating per Figure 1.

The design supports automated SMT assembly with lead-free matte tin plating, J-STD-020D Level 1 moisture sensitivity, and UL 94V-0 flammability rating. Its low 0.006 g weight and 2.10 mm × 1.30 mm footprint suit portable and high-density PCB layouts where discrete Zener arrays would otherwise consume excessive board area.

Key Specifications

Pinout & Package

Package: SOT363 - 6-pin, ultra-small surface-mount plastic case (2.10 mm × 1.30 mm × 0.95 mm), lead-free matte tin finish, UL 94V-0 rated.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMF5.0AT1G and BZX84-C16LT1G, MMBZ5246BTS-7-F uniquely delivers three isolated 16 V Zeners in one SOT363 package-reducing bill-of-materials count, eliminating inter-channel coupling, and cutting PCB area by >60% versus discrete solutions-making it optimal for multi-rail automotive and portable medical systems.

Availability

MMBZ5246BTS-7-F is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, USB-C power delivery monitors, and medical portable diagnostic devices requiring stable component supply and AEC-Q101 compliance.

Supply support for MMBZ5246BTS-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 high-reliability, space-constrained applications demanding tight voltage tolerance, low leakage, and automotive qualification.

FAQ

What is the maximum continuous Zener current for MMBZ5246BTS-7-F?

The device has a total power dissipation limit of 200 mW at +25°C ambient. At its nominal 16 V Zener voltage, this corresponds to a maximum continuous current of approximately 12.5 mA. Derating is required above +25°C per the power derating curve in Figure 1 of DS30184 Rev. 13–2.

Can MMBZ5246BTS-7-F be used in reverse-biased avalanche mode for ESD protection?

No-it is optimized for Zener breakdown operation, not ESD clamping. Its 17 Ω impedance and 200 mW rating are insufficient for IEC 61000-4-2 level 4 ESD events. For ESD protection, Diodes Incorporated recommends dedicated TVS arrays such as the D3V3M1U2UP.

How are the three Zener diodes arranged internally in the SOT363 package?

The three diodes are fully isolated-no internal connection exists between any anode or cathode terminals. Pin assignments are A1/C1, A2/C2, and A3/C3, each forming an independent Zener pair. This allows flexible biasing: all anodes can be tied to ground while cathodes serve separate regulated outputs, or cathodes can be paralleled for higher current capacity with matched voltage tracking.

Is the MMBZ5246BTS-7-F compatible with lead-free reflow profiles?

Yes-the device uses matte tin plating over Alloy 42 leadframe and is qualified for standard Pb-free reflow profiles per J-STD-020D Level 1. Peak temperature tolerance is 260°C for 30 seconds, and the package meets IPC/JEDEC standards for solderability and thermal cycling reliability.