onsemi MM5Z4702T5G

Overview

MM5Z4702T5G from onsemi is a 15 V ±5% Zener diode in SOD−523 package, rated for 500 mW power dissipation at TL = 75°C, with 50 µA test current (IZT), 0.05 µA reverse leakage at 11.4 V (VR), and ESD rating >16 kV (HBM). It provides precision voltage regulation in space-constrained portable electronics.

For engineers reviewing the MM5Z4702T5G datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage tolerance, low leakage at rated VR, thermal derating behavior, SOD−523 board assembly compatibility, and AEC−Q101 qualification status.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and temperature conditions. Its 15 V nominal Zener voltage exhibits a positive temperature coefficient near zero crossing, with typical TC ≈ +2.5 mV/°C across −55°C to +150°C.

The device delivers regulated output with 50 µA test current and supports steady-state operation up to 150°C junction temperature. Its SOD−523 package enables high-density placement while maintaining thermal resistance of 250°C/W (junction-to-ambient).

Key Specifications

Pinout & Package

SOD−523 surface-mount package: 1.20 mm × 0.80 mm × 0.60 mm footprint, void-free thermosetting plastic case, cathode indicated by polarity band, UL 94 V−0 flammability rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX584C15LT1G and MMSZ4702T1G, the MM5Z4702T5G uniquely combines SOD−523 miniaturization, 500 mW power capability, and ultra-low leakage-making it optimal for high-density, battery-sensitive, and automotive-qualified designs where both size and stability are non-negotiable.

Availability

MM5Z4702T5G is available at Aetrix Electronics and suitable for smartphone power management, automotive cabin control modules, and industrial IoT sensor nodes requiring stable component supply, long-lifecycle availability, and traceable sourcing.

Supply support for MM5Z4702T5G 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

onsemi (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MM5Z4xxxTxG series is designed specifically for space-constrained voltage regulation and protection in portable, automotive, and high-density electronics-emphasizing miniaturization, low leakage, and robust ESD performance.

FAQ

What is the nominal Zener voltage and tolerance of MM5Z4702T5G?

The MM5Z4702T5G has a nominal Zener voltage of 15.0 V with a tolerance of ±5%, specified as 14.25 V minimum and 15.75 V maximum at I_ZT = 50 µA and T_A = 25°C. This tight tolerance ensures reliable voltage reference performance in precision regulation circuits where consistent clamping or biasing is required. The MM5Z4702T5G maintains this specification across its qualified operating temperature range.

Is MM5Z4702T5G suitable for automotive applications?

Yes, MM5Z4702T5G is AEC−Q101 qualified and PPAP capable, confirming its suitability for automotive applications including cabin control modules and body electronics. Its −55°C to +150°C junction temperature range, >16 kV HBM ESD rating, and validated reliability under thermal cycling meet stringent automotive requirements. The MM5Z4702T5G is explicitly listed in onsemi's automotive-grade Zener portfolio.

What is the maximum power dissipation for MM5Z4702T5G on a standard PCB?

The MM5Z4702T5G is rated for 500 mW total power dissipation on FR−5 board at lead temperature (T_L) = 75°C, with linear derating of 4.0 mW/°C above that temperature. This rating assumes the minimum recommended footprint per onsemi's design guidelines. Exceeding this limit risks thermal runaway or accelerated degradation. The MM5Z4702T5G's thermal resistance (R_JA = 250°C/W) further informs safe operating area calculations.

Does MM5Z4702T5G have RoHS and Pb−Free compliance?

Yes, MM5Z4702T5G is Pb−Free and fully RoHS compliant, as confirmed in the official onsemi datasheet and marked with the "G" suffix. The device uses corrosion-resistant, easily solderable finish and meets UL 94 V−0 flammability standards. This compliance ensures compatibility with modern lead-free reflow processes and global environmental regulations. The MM5Z4702T5G documentation explicitly states its Pb−Free status and references onsemi's soldering guidelines.

What is the reverse leakage current specification for MM5Z4702T5G?

The MM5Z4702T5G specifies a maximum reverse leakage current (I_R) of 0.05 µA at V_R = 11.4 V and T_A = 25°C. This ultra-low leakage supports extended battery life in portable devices and ensures minimal error in high-impedance reference circuits. The value is measured under standardized test conditions and is consistent across the device's qualified temperature range. This parameter is critical for evaluating MM5Z4702T5G in low-power sensing and monitoring applications.