Nexperia USA Inc. MM5Z3V0T5GF

Overview

MM5Z3V0T5GF from Nexperia is a 3.0 V ±2 % tolerance Zener diode in SOD523 (SC-79) package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, with 10 Ω differential resistance at I_Z = 5 mA and 2.94–3.06 V nominal Zener voltage range - used for precision low-voltage regulation in space-constrained consumer and industrial power rails.

For engineers reviewing the MM5Z3V0T5GF datasheet, MM5Z3V0T5GF pinout, MM5Z3V0T5GF application, or MM5Z3V0T5GF equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (R_th(j-a) = 350 K/W), cathode/anode polarity marking, junction temperature limit (150 °C), and SOD523 footprint compatibility with high-density PCB layouts.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and input conditions. Its 2.94–3.06 V Zener voltage window and ±2 % tolerance ensure tight regulation for feedback loops in DC-DC converters and voltage monitors.

Designed for surface-mount use in ultra-compact applications, it features low differential resistance (10 Ω), low forward voltage (1.1 V @ 100 mA), and defined thermal behavior: R_th(j-a) = 350 K/W (free air), R_th(j-sp) = 65 K/W (solder point), enabling predictable thermal performance on FR4 PCBs with ~35 mm² copper area.

Key Specifications

Pinout & Package

The MM5Z3V0T5GF uses a 2-terminal SOD523 (SC-79) plastic surface-mount package with cathode marked by a visible band on the device body. Dimensions: 1.25 mm × 0.85 mm × 0.65 mm (L × W × H), with 0.34 mm lead pitch and 0.58 mm cathode-to-anode distance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX584-C3V0 and MMSZ4684T1G, MM5Z3V0T5GF delivers tighter voltage control (±2 % vs. ±5 %), lower dynamic impedance (10 Ω vs. ≥20 Ω), and smallest footprint (SOD523), making it optimal for next-generation portable electronics requiring high-accuracy, space-efficient voltage references.

Availability

MM5Z3V0T5GF is available at Aetrix Electronics and suitable for USB-C PD monitoring, low-power sensor biasing, industrial PLC input protection, and white LED current control requiring stable component supply with guaranteed long-term sourcing.

Supply support for MM5Z3V0T5GF 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, headquartered in Nijmegen, Netherlands, with manufacturing in Europe and Asia.

The MM5Z series targets cost-sensitive, space-constrained applications needing precision Zener regulation - designed specifically for consumer electronics, industrial controls, and IoT endpoints where small size and tight voltage tolerance are critical.

FAQ

What is the maximum continuous reverse current (I_Z) for stable regulation?

The MM5Z3V0T5GF achieves stable Zener regulation up to 60 mA at 25 °C ambient, based on its 300 mW power rating and 3.0 V nominal voltage. At higher currents, junction temperature rise must be managed using PCB copper area per datasheet guideline (35 mm² at cathode tab) to avoid exceeding 150 °C T_j.

How does the cathode marking align with the SOD523 package outline?

A single dark band on the top surface of the SOD523 package identifies Pin 1 (cathode); the unmarked end is Pin 2 (anode). This matches the simplified outline in Figure 9 of the datasheet, where the band corresponds to the "K" terminal adjacent to the shorter edge of the rectangular body.

Can MM5Z3V0T5GF replace a 3.3 V Zener in existing designs?

No - its nominal Zener voltage is 3.0 V (2.94–3.06 V), not 3.3 V. Substituting it for a 3.3 V part would reduce regulation threshold by ~90 mV, potentially causing undervoltage lockout or incorrect comparator triggering. Use MM5Z3V3T5G for 3.3 V applications.

What reflow profile parameters are recommended for SOD523 mounting?

Nexperia specifies JEDEC J-STD-020-compliant reflow: peak temperature 260 °C for ≤10 s, ramp-up rate ≤3 °C/s, and time above 217 °C of 60–150 s. The recommended solder land pattern (Figure 10) uses 0.5 mm wide pads spaced 0.6 mm apart, with 0.4 mm solder mask opening to prevent bridging.