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Nexperia USA Inc. SZMM3Z16VT1GX
- Part No.:
- SZMM3Z16VT1GX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SZMM3Z16VT1GX.pdf
- Description:
- DIODE ZENER 16V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,910
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Product details
Overview
SZMM3Z16VT1GX from Nexperia is a 16 V, ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 300 mW total power dissipation and 40 W non-repetitive peak reverse power, designed for precision voltage reference and overvoltage protection in automotive and industrial power rails.
For engineers reviewing the SZMM3Z16VT1GX datasheet, SZMM3Z16VT1GX pinout, SZMM3Z16VT1GX application, or SZMM3Z16VT1GX equivalent, this device supports stable 16 V regulation at 5 mA test current with 12 Ω differential resistance, low 10.4 mV/K temperature coefficient, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 16 V reference across load variations, with a nominal working voltage of 15.37–17.09 V at IZ = 5 mA and differential resistance of ≤12 Ω ensuring tight regulation under dynamic current conditions.
It features AEC-Q101 qualification, junction temperature range up to 150 °C, and thermal resistance from junction to ambient of 415 K/W on FR4 PCB - enabling robust operation in thermally constrained automotive ECUs and industrial sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 15.37 V min to 17.09 V max at IZ = 5 mA - defines precise regulation window for 16 V rail stabilization |
| Differential Resistance (rdiff) | ≤12 Ω at IZ = 5 mA - ensures minimal output voltage shift under load transients |
| Temperature Coefficient (SZ) | +10.4 to +14.0 mV/K - enables predictable drift compensation in wide-temperature environments |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C - sets continuous thermal limit on standard FR4 PCB |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W (tp = 100 µs, square wave) - supports transient surge suppression without failure |
| Reverse Current (IR) | ≤80 µA at VR = 12 V - guarantees low leakage in standby or battery-backed circuits |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - defines conduction loss when used in series forward-path configurations |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package with 2 leads, 2.7 mm × 1.6 mm footprint, 0.45 mm height, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS power domains |
| Low differential resistance | 12 Ω at 5 mA enables <±15 mV output variation across ±10 mA load step - critical for analog sensor references |
| Stable temperature coefficient | +10.4 to +14.0 mV/K allows accurate thermal drift modeling in 125 °C under-hood environments |
| Small SOD323 footprint | 2.7 mm × 1.6 mm area saves board space in dense power management IC layouts and compact modules |
| High surge capability | 40 W non-repetitive peak power withstands ISO 7637-2 pulse 1/2a/5a transients without degradation |
Applications
| Automotive Power Rail Clamping | Industrial Sensor Reference |
|---|---|
Use Scenario: Clamp 12 V battery-derived supply against load dump transients in vehicle infotainment head units. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp voltage spikes above 16 V. Use Value: Limits rail excursion to ≤17.1 V during 40 V/100 ms load dump events, protecting downstream LDOs and microcontrollers. |
Use Scenario: Provide stable 16 V reference for 24-bit ADC biasing in factory-floor pressure transmitters. IC Role / Device Role / Timing Role: Precision voltage reference source with low tempco and low noise for analog front-end calibration. Use Value: Delivers <±0.15 % voltage stability over −40 °C to +105 °C, reducing ADC offset drift by 4× vs. unregulated references. |
| USB-C PD Adapter Feedback | Programmable Logic Supply Monitor |
Use Scenario: Set feedback threshold for secondary-side voltage regulation in 65 W USB-C PD adapters. IC Role / Device Role / Timing Role: Zener element in optocoupler feedback loop to trigger regulation correction at 16 V output. Use Value: Enables ±1 % output accuracy across line/load/temperature with <10 ppm/°C long-term drift. |
Use Scenario: Monitor 16 V FPGA auxiliary supply in telecom baseband cards for brown-out detection. IC Role / Device Role / Timing Role: Threshold detector in comparator circuit that asserts reset when supply falls below 15.4 V. Use Value: Guarantees clean reset assertion with 100 mV hysteresis margin, eliminating false triggers from ripple or noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B16,115 | Same 16 V nominal, ±5 % tolerance, but SOD323 package with 200 mW Ptot rating and higher rdiff (20 Ω) | Limited to lower-power signal-level regulation; unsuitable for >5 mA continuous current or surge-heavy environments | Select when cost sensitivity outweighs surge robustness and thermal performance requirements |
| MMSZ4687T1G | 16 V nominal, ±5 %, SOD123 package, 500 mW Ptot, but not AEC-Q101 qualified and rdiff = 30 Ω | Acceptable for commercial-grade power supplies but excluded from automotive BOMs requiring Q101 compliance | Choose only for non-automotive designs where larger footprint and absence of automotive qualification are acceptable |
Compared with BZX384-B16,115 and MMSZ4687T1G, SZMM3Z16VT1GX delivers superior thermal resilience (300 mW vs. 200/500 mW), lower impedance regulation (12 Ω vs. 20/30 Ω), and mandatory AEC-Q101 validation - making it the sole choice for safety-critical automotive voltage clamping and high-stability industrial references.
Availability
SZMM3Z16VT1GX is available at Aetrix Electronics and suitable for automotive ECU power conditioning, industrial sensor reference design, and USB-C PD adapter feedback circuits requiring stable component supply with full traceability and lifecycle continuity.
Supply support for SZMM3Z16VT1GX 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 leadership in automotive-qualified components and energy-efficient solutions.
SZMM3Z16VT1GX belongs to the SZMM3Z series of AEC-Q101-qualified Zener diodes engineered specifically for precision voltage regulation and transient suppression in harsh-environment automotive and industrial power systems.
FAQ
What is the maximum continuous reverse current this Zener can handle at 25 °C?
The SZMM3Z16VT1GX supports a maximum continuous reverse current of 18.8 mA at 25 °C ambient, calculated from its 300 mW total power dissipation rating and nominal 16 V Zener voltage (IZ = Ptot/VZ). Derating applies above 25 °C per the 415 K/W junction-to-ambient thermal resistance.
Is this diode suitable for use in a 125 °C under-hood automotive environment?
Yes - the device is rated for junction temperatures up to 150 °C and qualified to AEC-Q101. At 125 °C ambient, its usable Zener current reduces to ~12 mA due to thermal derating, and its temperature coefficient remains within +10.4 to +14.0 mV/K, supporting predictable regulation behavior in engine control modules.
How does the marking code 'VZ' identify this specific part?
'VZ' is the unique marking code printed on the cathode side of the SOD323 package, corresponding exclusively to SZMM3Z16VT1G per Nexperia's official marking table. It distinguishes this 16 V variant from other members of the 37-part SZMM3Z series (e.g., 'VV' = 15 V, 'X4' = 18 V).
Can this Zener be used in parallel for higher power handling?
No - Zener diodes exhibit manufacturing spread in breakdown voltage, causing current hogging if paralleled. The SZMM3Z16VT1GX must be used individually; for higher power, select a single higher-rated device like the PZSM-optimized PZU16B2 or implement active regulation instead.
SZMM3Z16VT1GX 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):
- 16 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12 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
SZMM3Z16VT1GX FAQ
1.How can I place an order for SZMM3Z16VT1GX through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM3Z16VT1GX 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 SZMM3Z16VT1GX reliable?
The price and inventory of SZMM3Z16VT1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM3Z16VT1GX is usually 5 days.
3.What payment methods are accepted for SZMM3Z16VT1GX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM3Z16VT1GX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM3Z16VT1GX?
SZMM3Z16VT1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM3Z16VT1GX 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 SZMM3Z16VT1GX?
For technical support, including SZMM3Z16VT1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM3Z16VT1GX requirements.
6.How does Aetrix verify that SZMM3Z16VT1GX is sourced from the original manufacturer or authorized distributors?
All SZMM3Z16VT1GX 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 SZMM3Z16VT1GX meets industry standards.
7.What is the process for return or replacement of SZMM3Z16VT1GX?
All SZMM3Z16VT1GX units undergo pre-shipment inspection (PSI). If there is an issue with SZMM3Z16VT1GX, 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 SZMM3Z16VT1GX part is unused and in its original packaging.
Return procedure for SZMM3Z16VT1GX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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