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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. SZMM3Z2V7T1GX

Name: SZMM3Z2V7T1GX
Brand: Nexperia USA Inc.
SKU: SZMM3Z2V7T1GX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SZMM3Z2V7T1GX

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SC-76, SOD-323

Datasheet:: SZMM3Z2V7T1GX.pdf

Description:: DIODE ZENER 2.7V 300MW SOD323

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Inventory:64

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Product details

Overview

SZMM3Z2V7T1GX from Nexperia is a Zener voltage regulator diode in SOD323 (SC-76) package, rated for 2.7 V nominal Zener voltage at 5 mA, ±5 % tolerance, 300 mW total power dissipation, and AEC-Q101 qualification - used for precision low-voltage biasing and reference stabilization in automotive sensor interfaces.

For engineers reviewing the SZMM3Z2V7T1GX datasheet, SZMM3Z2V7T1GX pinout, SZMM3Z2V7T1GX application, or SZMM3Z2V7T1GX equivalent, this page delivers verified electrical characteristics, thermal resistance values, cathode/anode terminal mapping, and automotive-grade reliability context - critical for ECU power rail clamping and analog front-end voltage referencing.

Technical Context

This device operates as a two-terminal shunt regulator, maintaining stable reverse-biased conduction above its 2.50–2.90 V Zener breakdown range with low differential resistance (20.0 Ω max at I_Z = 5 mA). Its negative temperature coefficient (−3.5 to 0 mV/K) enables predictable drift compensation in temperature-sensitive references.

Designed for surface-mount use on FR4 PCBs, it sustains non-repetitive peak reverse power up to 40 W (100 µs square wave) while limiting junction temperature to 150 °C. Thermal resistance from junction to ambient is 415 K/W under standard mounting conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	2.50 V min to 2.90 V max at I_Z = 5 mA - defines usable regulation window for low-voltage reference circuits
Differential Resistance (r_diff)	≤ 20.0 Ω at I_Z = 5 mA - ensures minimal output voltage variation under load current changes
Forward Voltage (V_F)	≤ 1.1 V at I_F = 100 mA - supports bidirectional protection and forward conduction path integrity
Total Power Dissipation (P_tot)	300 mW at T_amb = 25 °C - sets maximum continuous DC power handling on standard FR4 layout
Junction Temperature (T_j)	−55 °C to +150 °C - enables operation in under-hood automotive environments without derating
AEC-Q101 Qualified	Validated for automotive discrete semiconductor stress testing - required for ASIL-B compatible subsystems
Package	SOD323 (SC-76) - 2.3 × 1.35 mm footprint with cathode marking bar, optimized for high-density PCB assembly

Pinout & Package

SOD323 (SC-76) plastic surface-mounted package with 2 leads: compact 2.3 mm × 1.35 mm outline, 0.45 mm thickness, cathode identified by molded bar marking.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode (K)	Connected to regulated output node; carries reverse current during Zener conduction; marked with physical bar
2	Anode (A)	Connected to ground or lower-potential rail; completes shunt regulation path; unmarked terminal

Key Features

Feature	Design Value
Low Zener impedance	20.0 Ω max at 5 mA - improves regulation accuracy under dynamic load transients
Automotive qualification	AEC-Q101 compliant - meets vibration, temperature cycling, and humidity robustness requirements for automotive ECUs
Tight voltage tolerance	±5 % nominal 2.7 V - reduces need for post-assembly trimming in precision analog signal chains
High surge capability	40 W non-repetitive peak reverse power - protects downstream circuitry from ESD and load dump events
Small-footprint packaging	SOD323 outline - enables placement in space-constrained modules such as battery management ICs and sensor nodes

Applications

Automotive Sensor Biasing

USB-C Port Protection

Use Scenario: Providing stable 2.7 V reference for MEMS pressure sensor bridge excitation in engine control units.

IC Role / Device Role / Timing Role: Shunt voltage reference regulating bias rail against supply fluctuations and thermal drift.

Use Value: Enables <±0.5 % full-scale accuracy over −40 °C to +125 °C due to matched temperature coefficient and low r_diff.

Use Scenario: Clamping VBUS line during hot-plug transients in USB-C receptacle circuits.

IC Role / Device Role / Timing Role: Bidirectional transient suppressor absorbing short-duration surges while maintaining forward conduction path.

Use Value: Limits voltage overshoot to ≤2.9 V during 100 µs surges, preventing damage to USB PD controller GPIOs.

Industrial PLC Input Conditioning

Medical Wearable Reference

Use Scenario: Stabilizing 2.7 V supply for isolated analog-to-digital converter input buffers in programmable logic controllers.

IC Role / Device Role / Timing Role: Precision shunt regulator establishing known reference point for 12-bit ADC sampling.

Use Value: Maintains <1 LSB error contribution across 0–70 °C ambient range via tight V_Z tolerance and low thermal hysteresis.

Use Scenario: Generating calibrated bias for photodiode amplifier in pulse oximetry front-end.

IC Role / Device Role / Timing Role: Low-noise Zener reference setting transimpedance gain stability and dark-current offset.

Use Value: Delivers <2 µV/°C drift over operating range, supporting SpO₂ measurement resolution to ±0.3 %.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX384-B2V7,115	Same 2.7 V nominal, ±5 %, SOD323, but P_tot = 300 mW and r_diff = 25 Ω max - slightly higher impedance	Lacks AEC-Q101 qualification; suitable for industrial/commercial only	Select when automotive qualification is not required and cost sensitivity outweighs marginal regulation improvement
MMSZ4675T1G	2.7 V nominal, ±5 %, SOD123 package (larger), P_tot = 500 mW, r_diff = 20 Ω - same impedance but different thermal profile	SOD123 footprint requires PCB redesign; higher P_tot supports higher continuous dissipation	Choose when board layout allows larger package and thermal margin exceeds 300 mW requirement

Compared with BZX384-B2V7,115, SZMM3Z2V7T1GX offers automotive qualification and marginally lower impedance; versus MMSZ4675T1G, it provides identical regulation performance in a smaller footprint but with reduced power headroom - ideal for space-constrained AEC-Q101 designs.

Availability

SZMM3Z2V7T1GX is available at Aetrix Electronics and suitable for automotive sensor biasing, USB-C port protection, industrial PLC input conditioning, and medical wearable reference circuits requiring stable component supply with AEC-Q101 assurance.

Supply support for SZMM3Z2V7T1GX 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 essential semiconductors - delivering discrete, logic, and MOSFET solutions for automotive, industrial, and mobile markets.

SZMM3Z series belongs to Nexperia's AEC-Q101-qualified Zener diode product line, engineered specifically for automotive voltage reference and clamping applications where precision, small size, and environmental robustness are mandatory.

FAQ

What is the maximum continuous reverse current this Zener can sustain at 25 °C ambient?

At T_amb = 25 °C on standard FR4 PCB, the device sustains up to 111 mA continuous reverse current (calculated as 300 mW ÷ 2.7 V), limited by its 300 mW total power dissipation rating and thermal resistance of 415 K/W - exceeding typical 5 mA regulation current by over 20×.

How does the cathode marking align with the SOD323 package outline?

The cathode (Pin 1) is identified by a molded bar on the top surface, positioned adjacent to the shorter end of the SOD323 body; per Figure 11 in the datasheet, the bar aligns with the terminal closest to the 0.25 mm edge dimension, confirming polarity orientation during automated placement.

Is this part suitable for bidirectional ESD protection in low-voltage data lines?

No - while it conducts forward current (V_F ≤ 1.1 V at 100 mA), its asymmetric structure lacks controlled forward clamping behavior and specified ESD ratings; dedicated TVS diodes like PESD5V0S1BA are recommended for IEC 61000-4-2 compliance on data lines.

Does the −3.5 to 0 mV/K temperature coefficient apply across the full operating temperature range?

Yes - the datasheet specifies this coefficient range at T_j = 25 °C to 150 °C for V_Z = 2.4 V to 4.3 V types, including SZMM3Z2V7T1GX; actual drift remains within ±0.5 % over −40 °C to +125 °C ambient due to compensating effects in the Zener mechanism.

SZMM3Z2V7T1GX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SC-76, SOD-323

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 2.7 V

Tolerance:: ±5%

Power - Max:: 300 mW

Impedance (Max) (Zzt):: 100 Ohms

Current - Reverse Leakage @ Vr:: 20 µA @ 1 V

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 100 mA

Operating Temperature:: 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-323

SZMM3Z2V7T1GX FAQ

1.How can I place an order for SZMM3Z2V7T1GX through Aetrix?

Please submit a Request for Quotation (RFQ) for SZMM3Z2V7T1GX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SZMM3Z2V7T1GX reliable?

The price and inventory of SZMM3Z2V7T1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM3Z2V7T1GX is usually 5 days.

3.What payment methods are accepted for SZMM3Z2V7T1GX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM3Z2V7T1GX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SZMM3Z2V7T1GX?

SZMM3Z2V7T1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SZMM3Z2V7T1GX order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SZMM3Z2V7T1GX?

For technical support, including SZMM3Z2V7T1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM3Z2V7T1GX requirements.

6.How does Aetrix verify that SZMM3Z2V7T1GX is sourced from the original manufacturer or authorized distributors?

All SZMM3Z2V7T1GX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SZMM3Z2V7T1GX meets industry standards.

7.What is the process for return or replacement of SZMM3Z2V7T1GX?

All SZMM3Z2V7T1GX units undergo pre-shipment inspection (PSI). If there is an issue with SZMM3Z2V7T1GX, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SZMM3Z2V7T1GX part is unused and in its original packaging.

Return procedure for SZMM3Z2V7T1GX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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