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

Nexperia USA Inc. SZMM5Z4V7T5GF

Name: SZMM5Z4V7T5GF
Brand: Nexperia USA Inc.
SKU: SZMM5Z4V7T5GF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SZMM5Z4V7T5GF

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: SC-79, SOD-523

Datasheet:: SZMM5Z4V7T5GF.pdf

Description:: DIODE ZENER 4.7V 300MW SOD523

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Inventory:29,434

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Product details

Overview

SZMM5Z4V7T5GF from Nexperia is a Zener voltage regulator diode in SOD523 (SC-79) package, designed for precision low-voltage regulation at 4.7 V nominal with ±2 % tolerance, 3.0 Ω differential resistance at I_Z = 5 mA, and AEC-Q101 qualification for automotive power rail stabilization.

For engineers reviewing the SZMM5Z4V7T5GF datasheet, SZMM5Z4V7T5GF pinout, SZMM5Z4V7T5GF application, or SZMM5Z4V7T5GF equivalent, key selection criteria include Zener voltage accuracy, thermal resistance (R_th(j-sp) = 65 K/W), non-repetitive surge capability (40 W), and ultra-small SMD footprint for space-constrained PCBs.

Technical Context

This device operates as a two-terminal shunt regulator, maintaining stable reverse-biased voltage across load circuits by conducting excess current when input exceeds V_Z. Its 4.61–4.79 V working range (min/max at I_Z = 5 mA) and low r_diff ensure tight regulation under varying load conditions.

Thermally, it features R_th(j-a) = 350 K/W (free air) and R_th(j-sp) = 65 K/W (to solder point), enabling reliable operation up to T_j = 150 °C. The −3.5 to +0.2 mV/K temperature coefficient supports predictable drift behavior in ambient ranges from −55 °C to +150 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	4.61–4.79 V at I_Z = 5 mA - defines precise regulation threshold for 4.7 V nominal rails
Differential Resistance (r_diff)	3.0 Ω max at I_Z = 5 mA - ensures minimal output voltage shift under load current variation
Power Dissipation (P_tot)	300 mW at T_amb = 25 °C on FR4 PCB with 35 mm² copper - sets continuous thermal operating limit
Non-repetitive Peak Power (P_ZSM)	40 W for t_p = 100 µs square wave - enables transient overvoltage clamping without failure
Forward Voltage (V_F)	1.1 V max at I_F = 100 mA - defines forward conduction loss during polarity-reversal protection use
Reverse Current (I_R)	80 µA max at V_R = 4.2 V - quantifies leakage before Zener onset, critical for low-power standby circuits
Temperature Coefficient (S_Z)	−3.5 to +0.2 mV/K - determines V_Z drift magnitude across junction temperature range

Pinout & Package

Package: SOD523 (SC-79), ultra-small surface-mount plastic package with 2 leads, 1.25 mm × 0.85 mm body size and cathode marking bar.

Pin/Terminal	Circuit Role	Design Meaning
1 (K)	Cathode	Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation
2 (A)	Anode	Connected to ground or reference potential; completes shunt path for excess current during regulation

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness
±2 % Zener voltage tolerance	Enables tighter system-level voltage margin control vs. standard ±5 % Zeners
Low 3.0 Ω differential resistance	Reduces output impedance for improved line/load regulation in feedback-sensing applications
Ultra-compact SOD523 footprint	Minimizes PCB area usage in high-density layouts such as ADAS sensor modules and infotainment power supplies
65 K/W junction-to-solder-point thermal resistance	Supports efficient heat transfer to PCB copper, extending lifetime under sustained 300 mW dissipation

Applications

Automotive Body Control Module (BCM)

Industrial Sensor Signal Conditioning

Use Scenario: Stabilizing 5 V supply rail for microcontroller I/O peripherals in door module ECUs.

IC Role / Device Role / Timing Role: Shunt regulator providing local voltage reference and overvoltage clamp for LIN transceiver and LED drivers.

Use Value: Maintains <±2 % output stability across −40 °C to +125 °C ambient while surviving load dump transients via 40 W surge rating.

Use Scenario: Biasing precision op-amp inputs in 4–20 mA loop transmitter front-ends.

IC Role / Device Role / Timing Role: Low-noise voltage reference source with <3 Ω dynamic impedance to minimize signal offset drift.

Use Value: Enables <0.1 % full-scale error contribution from reference instability over temperature and time.

Consumer USB-C Power Delivery Monitor

Medical Wearable Battery Management

Use Scenario: Regulating auxiliary 3.3 V rail for PD controller communication logic during adapter negotiation.

IC Role / Device Role / Timing Role: Compact, low-leakage (80 µA @ 4.2 V) Zener used in voltage divider feedback network.

Use Value: Fits within 1.25 mm × 0.85 mm PCB footprint while delivering ±2 % accuracy without trimming.

Use Scenario: Providing stable reference for ADC measurement of Li-ion cell voltage in patch-style monitors.

IC Role / Device Role / Timing Role: Low-drift (−3.5 to +0.2 mV/K) shunt regulator ensuring consistent ADC scaling across body-worn temperature excursions.

Use Value: Limits reference-induced measurement error to <0.5 mV over 0–45 °C operating range.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX584-C4V7	Same 4.7 V nominal, ±2 % tolerance, but SOD323 package (1.7 × 1.3 mm); higher R_th(j-a) = 450 K/W	Larger footprint; less suitable for ultra-dense layouts where SOD523 is mandated	Select when board layout allows larger pad geometry and thermal budget permits higher junction rise
MMSZ4704T1G	4.7 V nominal, ±5 % tolerance; SOD123 package (3.7 × 1.6 mm); P_tot = 500 mW but no AEC-Q101 qualification	Higher power rating but lacks automotive reliability validation and tighter voltage tolerance	Select for cost-sensitive industrial applications where AEC-Q101 is not required and ±5 % regulation suffices

Compared with BZX584-C4V7 and MMSZ4704T1G, SZMM5Z4V7T5GF delivers superior space efficiency, automotive qualification, and voltage precision-making it optimal for next-generation compact, safety-critical embedded systems requiring guaranteed long-term stability.

Availability

SZMM5Z4V7T5GF is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, and portable medical devices requiring stable component supply with AEC-Q101 compliance and tight voltage tolerance.

Supply support for SZMM5Z4V7T5GF 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, serving automotive, industrial, and consumer markets with scalable manufacturing and rigorous quality systems.

SZMM5Z series belongs to Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for space-constrained, thermally demanding voltage regulation in automotive power domains and precision analog subsystems.

FAQ

What is the maximum continuous power dissipation for SZMM5Z4V7T5GF at 85 °C ambient?

At T_amb = 85 °C, derated power is calculated using P_tot(T_amb) = P_tot(25 °C) × (1 − (T_amb − 25)/R_th(j-a) × θ), yielding ~180 mW on standard FR4 with 35 mm² copper. This ensures safe operation without exceeding T_j = 150 °C limit.

Does SZMM5Z4V7T5GF support bidirectional ESD protection?

No-it is a unidirectional Zener diode optimized for DC voltage regulation and overvoltage clamping in reverse bias only. For bidirectional ESD protection, Nexperia's PESD series or dedicated TVS arrays should be used instead.

How does the −3.5 to +0.2 mV/K temperature coefficient affect regulation accuracy at 125 °C?

Over ΔT = 100 K (25 °C to 125 °C), V_Z shift ranges from −350 mV to +20 mV. With nominal 4.7 V, this yields −7.4 % to +0.4 % deviation-confirming its suitability for applications where negative drift dominates and compensation is applied externally.

Can SZMM5Z4V7T5GF replace older SZM5Z4V7 variants in existing designs?

Yes-SZMM5Z4V7T5GF is a direct form-fit-function replacement for SZM5Z4V7 with identical electrical specs, SOD523 package, and enhanced AEC-Q101 qualification. No layout or schematic changes are required for drop-in migration.

SZMM5Z4V7T5GF Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SC-79, SOD-523

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 4.7 V

Tolerance:: ±2%

Power - Max:: 300 mW

Impedance (Max) (Zzt):: 80 Ohms

Current - Reverse Leakage @ Vr:: 3 µA @ 2 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-523

SZMM5Z4V7T5GF FAQ

1.How can I place an order for SZMM5Z4V7T5GF through Aetrix?

Please submit a Request for Quotation (RFQ) for SZMM5Z4V7T5GF 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 SZMM5Z4V7T5GF reliable?

The price and inventory of SZMM5Z4V7T5GF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z4V7T5GF is usually 5 days.

3.What payment methods are accepted for SZMM5Z4V7T5GF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z4V7T5GF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SZMM5Z4V7T5GF?

SZMM5Z4V7T5GF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SZMM5Z4V7T5GF 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 SZMM5Z4V7T5GF?

For technical support, including SZMM5Z4V7T5GF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z4V7T5GF requirements.

6.How does Aetrix verify that SZMM5Z4V7T5GF is sourced from the original manufacturer or authorized distributors?

All SZMM5Z4V7T5GF 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 SZMM5Z4V7T5GF meets industry standards.

7.What is the process for return or replacement of SZMM5Z4V7T5GF?

All SZMM5Z4V7T5GF units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z4V7T5GF, 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 SZMM5Z4V7T5GF part is unused and in its original packaging.

Return procedure for SZMM5Z4V7T5GF:

1.Submit a request within 90 days.

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

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