Nexperia USA Inc. MM3Z2V4T1GX

Overview

MM3Z2V4T1GX from Nexperia is a 2.4 V ±5 % tolerance Zener diode in SOD323 (SC-76) package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, with 50 Ω differential resistance at 5 mA and −3.5 to 0 mV/K temperature coefficient - used for low-voltage reference and voltage regulation in space-constrained consumer and industrial power rails.

For engineers reviewing the MM3Z2V4T1GX datasheet, MM3Z2V4T1GX pinout, MM3Z2V4T1GX application, or MM3Z2V4T1GX equivalent, this page delivers verified electrical characteristics, thermal resistance (415 K/W junction-to-ambient), cathode/anode terminal mapping, and direct-fit alternatives for precision 2.4 V stabilization in battery-powered sensors and LDO feedback networks.

Technical Context

This Zener diode operates in reverse breakdown mode with a nominal working voltage of 2.4 V at 5 mA test current, maintaining regulation across ambient temperatures from −55 °C to +150 °C. Its low 50 Ω differential resistance ensures stable output under varying load currents up to 200 mA forward or surge-limited reverse conditions.

The device uses silicon planar technology with a cathode-marked SOD323 package optimized for reflow soldering on FR4 PCBs. Thermal resistance from junction to solder point is 110 K/W, enabling reliable operation at junction temperatures up to 150 °C when mounted per standard footprint guidelines.

Key Specifications

Pinout & Package

SOD323 (SC-76) surface-mount plastic package with 2 leads; cathode identified by marking bar on body; 1.35 mm × 0.85 mm footprint; 0.45 mm height; designed for automated placement and reflow soldering per IPC-7351B.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B2V4 and MMSZ4678T1G, MM3Z2V4T1GX offers the lowest differential resistance (50 Ω) in the smallest SOD323 footprint, making it optimal for space-constrained, high-precision 2.4 V references where thermal resistance and voltage stability are critical.

Availability

MM3Z2V4T1GX is available at Aetrix Electronics and suitable for USB-C PD reference design, IoT sensor biasing, and industrial PLC input protection requiring stable component supply, consistent parametric performance, and long-term obsolescence management.

Supply support for MM3Z2V4T1GX 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, with manufacturing rooted in process innovation and automotive-grade quality systems.

The MM3Z series targets general-purpose voltage regulation in compact consumer, industrial, and computing applications - engineered for robustness in automated assembly and stable performance across extended temperature ranges.

FAQ

What is the maximum continuous reverse current for stable Zener operation?

The MM3Z2V4T1GX is rated for 5 mA test current, but its maximum continuous reverse current is limited by thermal constraints: at 25 °C ambient on FR4 PCB, 300 mW dissipation allows ~125 mA at 2.4 V before exceeding junction temperature limits. Derating is required above 25 °C per 415 K/W R_th(j-a).

Can MM3Z2V4T1GX replace older 2.4 V Zeners like 1N5221B in SMT designs?

Yes - MM3Z2V4T1GX matches the 2.4 V ±5 % specification and 50 Ω r_diff of 1N5221B while offering SOD323 packaging instead of DO-35. No circuit redesign is needed, but PCB footprint must be updated to accommodate the smaller 1.35 mm × 0.85 mm outline and cathode-bar marking orientation.

How does the temperature coefficient affect accuracy in a 0–70 °C operating range?

With S_Z ranging from −3.5 to 0 mV/K, the worst-case voltage drift over 70 °C is 245 mV (−3.5 mV/K × 70 K), or ~10.2 % of 2.4 V. However, typical units show near-zero drift near 25 °C, and actual variation across the full range is bounded by the 2.30–2.60 V min/max spec - ensuring ≤ ±5 % absolute error.

Is this part suitable for automotive applications?

No - MM3Z2V4T1GX is not AEC-Q200 qualified and lacks automotive-specific testing or qualification documentation. Nexperia explicitly states non-automotive qualification in its legal disclaimers; use only in consumer, industrial, or computing applications unless independently validated for automotive environments.