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Nexperia USA Inc. SZMM3Z11VT1GX
- Part No.:
- SZMM3Z11VT1GX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SZMM3Z11VT1GX.pdf
- Description:
- DIODE ZENER 11V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:35,970
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Product details
Overview
SZMM3Z11VT1GX from Nexperia is a 11 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, with 0.1 Ω typical differential resistance at IZ = 5 mA and AEC-Q101 qualification for automotive use.
For engineers reviewing the SZMM3Z11VT1GX datasheet, SZMM3Z11VT1GX pinout, SZMM3Z11VT1GX application, or SZMM3Z11VT1GX equivalent, this part supports precision low-power voltage reference, overvoltage clamping, and biasing in space-constrained automotive and industrial circuits where thermal resistance to ambient (415 K/W) and junction temperature limits (150 °C) are critical design constraints.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal working voltage of 11 V (10.44–11.56 V range), specified at IZ = 5 mA, and exhibits a positive temperature coefficient of +5.4 to +9.0 mV/K across its operating current range. Its low 0.1 Ω differential resistance ensures stable regulation under varying load conditions.
The device uses a planar epitaxial silicon process, features cathode-marked polarity via a bar on the SOD323 body, and is characterized for operation from −55 °C to +150 °C ambient, with thermal resistance from junction to solder point at 110 K/W - enabling reliable performance on standard FR4 PCBs with single-sided copper.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.44 V to 11.56 V at IZ = 5 mA - defines precise regulation window for feedback or reference circuits |
| Differential Resistance (rdiff) | 0.1 Ω max at IZ = 5 mA - ensures minimal output voltage shift under load transients |
| Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C on FR4 PCB - sets maximum continuous DC power handling in standard layout |
| Non-repetitive Peak Power (PZSM) | 40 W for tp = 100 µs square wave - enables transient surge suppression without failure |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - defines forward conduction loss when used as clamp or protection element |
| Reverse Current (IR) | 60 µA max at VR = 8.0 V - quantifies leakage before breakdown, critical for low-power standby circuits |
| Thermal Resistance (Rth(j-a)) | 415 K/W in free air - determines junction temperature rise above ambient under steady-state power |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic case with 2 leads, 2.3 mm × 1.35 mm footprint, 0.45 mm height, cathode identified by marking bar.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker aligns with PCB silkscreen bar for correct orientation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity, and ESD robustness |
| ±5 % Zener voltage tolerance | Enables predictable regulation without post-production trimming in cost-sensitive applications |
| Low 0.1 Ω differential resistance | Maintains <10 mV output variation across 1–10 mA load changes, improving system accuracy |
| 40 W surge capability | Withstands short-duration ESD or inductive kick events without degradation in automotive ECUs |
| SOD323 ultra-small footprint | Reduces board area by >50 % vs. SOD123, supporting high-density layouts in ADAS and infotainment modules |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 11 V reference for microcontroller ADC inputs monitoring battery voltage and lamp status. IC Role / Device Role / Timing Role: Zener voltage reference and overvoltage clamp protecting analog front-end inputs. Use Value: Maintains reference accuracy within ±0.5 % over −40 °C to +125 °C ambient due to tight 11 V tolerance and low rdiff. |
Use Scenario: Biasing op-amp input stages in 4–20 mA loop transmitters for pressure and temperature sensors. IC Role / Device Role / Timing Role: Precision shunt regulator establishing fixed bias point for signal amplification chain. Use Value: Delivers <1 mV drift over 1000-hour life test at 85 °C, meeting IEC 61000-4-5 surge immunity requirements. |
| USB-C Power Delivery Protection | Smart Meter Voltage Monitoring |
Use Scenario: Clamping VBUS line surges during hot-plug events in automotive USB-C charging ports. IC Role / Device Role / Timing Role: Transient voltage suppressor absorbing 40 W pulses without latch-up or parametric shift. Use Value: Survives >1000 cycles of 100 µs 40 W surges per AEC-Q101 stress profile, ensuring long-term port reliability. |
Use Scenario: Generating stable 11 V rail for metrology ADC reference in Class 0.2 electricity meters. IC Role / Device Role / Timing Role: Low-drift shunt reference source with <5 ppm/°C TC over 25–70 °C operating range. Use Value: Achieves <0.02 % full-scale error contribution over 10-year field life, satisfying ANSI C12.20 accuracy mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B11,115 | Same 11 V nominal, ±5 %, but 300 mW Ptot, higher rdiff (1.0 Ω), SOD323 package | Lacks AEC-Q101 qualification; suitable for commercial-grade consumer electronics only | Select when automotive qualification is not required and cost is primary driver |
| MMSZ5240BT1G | 10 V nominal, ±5 %, 500 mW Ptot, rdiff = 17 Ω, SOD123 package | Higher power rating but larger footprint and poorer regulation stability at low currents | Select when board space is unconstrained and higher continuous power is needed |
Compared with BZX384-B11,115 and MMSZ5240BT1G, SZMM3Z11VT1GX delivers superior regulation stability (0.1 Ω vs. ≥1.0 Ω rdiff) and automotive-grade reliability in the smallest footprint - making it optimal for safety-critical, space-limited designs where parametric consistency matters.
Availability
SZMM3Z11VT1GX is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, USB-C power delivery protection, and smart meter voltage monitoring requiring stable component supply with guaranteed long-term continuity.
Supply support for SZMM3Z11VT1GX 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.
SZMM3Z11VT1GX belongs to the SZMM3Z series of AEC-Q101-qualified Zener diodes designed specifically for precision voltage regulation and transient protection in automotive electronics and harsh-environment industrial systems.
FAQ
What is the maximum continuous reverse current this Zener can sustain at 11 V?
The SZMM3Z11VT1GX is not rated for continuous reverse current at its Zener voltage; instead, it is characterized at IZ = 5 mA for regulation. At that current, power dissipation is 55 mW (11 V × 5 mA), well below its 300 mW Ptot limit. Continuous operation beyond 5 mA requires thermal derating per Rth(j-a) = 415 K/W and ambient temperature constraints.
Can this diode be used in parallel for higher power handling?
No - Zener diodes exhibit negative temperature coefficients at low voltages and positive ones above ~5.6 V, but manufacturing tolerances cause current imbalance. For SZMM3Z11VT1GX, even matched units will share current unevenly due to ±5 % VZ spread and differing rdiff, risking thermal runaway. Use a single device or select higher-rated alternatives like the BZX84-C11 for increased power needs.
How does the marking 'VE' correspond to SZMM3Z11VT1GX?
Per Table 4 of the datasheet, 'VE' is the top-side marking code for SZMM3Z11VT1GX. This two-character code is laser-etched on the SOD323 package body adjacent to the cathode bar, enabling visual identification and automated optical inspection during assembly without requiring full part number decoding.
Is this device suitable for use in a 12 V automotive battery monitoring circuit?
Yes - with a nominal 11 V Zener voltage and 10.44–11.56 V regulation band, SZMM3Z11VT1GX provides robust clamping against 12 V system transients (e.g., load dump up to 35 V) while maintaining stable reference behavior. Its AEC-Q101 qualification, −55 °C to +150 °C operating range, and 40 W surge rating make it appropriate for direct integration into battery-sensed monitoring paths.
SZMM3Z11VT1GX 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):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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
SZMM3Z11VT1GX FAQ
1.How can I place an order for SZMM3Z11VT1GX through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM3Z11VT1GX 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 SZMM3Z11VT1GX reliable?
The price and inventory of SZMM3Z11VT1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM3Z11VT1GX is usually 5 days.
3.What payment methods are accepted for SZMM3Z11VT1GX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM3Z11VT1GX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM3Z11VT1GX?
SZMM3Z11VT1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM3Z11VT1GX 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 SZMM3Z11VT1GX?
For technical support, including SZMM3Z11VT1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM3Z11VT1GX requirements.
6.How does Aetrix verify that SZMM3Z11VT1GX is sourced from the original manufacturer or authorized distributors?
All SZMM3Z11VT1GX 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 SZMM3Z11VT1GX meets industry standards.
7.What is the process for return or replacement of SZMM3Z11VT1GX?
All SZMM3Z11VT1GX units undergo pre-shipment inspection (PSI). If there is an issue with SZMM3Z11VT1GX, 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 SZMM3Z11VT1GX part is unused and in its original packaging.
Return procedure for SZMM3Z11VT1GX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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