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Nexperia USA Inc. SZMM3Z10VT1GX
- Part No.:
- SZMM3Z10VT1GX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SZMM3Z10VT1GX.pdf
- Description:
- DIODE ZENER 10V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:573
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Product details
Overview
SZMM3Z10VT1GX from Nexperia is a 10 V ±5 % 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 low differential resistance (0.1 Ω at IZ = 7 mA) and AEC-Q101 qualification for automotive use.
For engineers reviewing the SZMM3Z10VT1GX datasheet, SZMM3Z10VT1GX pinout, SZMM3Z10VT1GX application, or SZMM3Z10VT1GX equivalent, this part serves as a precision shunt reference in low-power voltage regulation, overvoltage protection, and biasing circuits where compact size, thermal stability, and automotive-grade reliability are required.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 10 V reference across its terminals under controlled current conditions (IZ = 7 mA), with temperature coefficient of +4.5 mV/K at IZ = 7 mA and junction-to-ambient thermal resistance of 415 K/W on FR4 PCB.
It exhibits low capacitance (110 pF at VR = 0 V, f = 1 MHz), fast transient response due to low rdiff, and robust surge capability (40 W, tp = 100 µs square wave), making it suitable for noise-sensitive analog references and ESD-robust front-end clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.45 V to 10.55 V at IZ = 7 mA - ensures ±5 % tolerance for stable reference accuracy in feedback loops |
| Differential Resistance (rdiff) | 0.1 Ω max at IZ = 7 mA - minimizes output voltage variation under load current changes |
| Temperature Coefficient (SZ) | +4.5 mV/K at IZ = 7 mA - enables predictable drift compensation in temperature-varying environments |
| Total Power Dissipation (Ptot) | 300 mW at Tamb = 25 °C - defines maximum continuous DC power handling on standard FR4 PCB |
| Non-repetitive Peak Reverse Power (PZSM) | 40 W, tp = 100 µs square wave - supports transient overvoltage suppression without failure |
| Reverse Current (IR) | ≤ 60 µA at VR = 8 V - guarantees low leakage in high-impedance sensing or standby circuits |
| Forward Voltage (VF) | 1.1 V max at IF = 100 mA - limits forward conduction loss during polarity-reversal protection |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package with 2 leads; dimensions 1.8 mm × 1.35 mm × 0.95 mm (L × W × H); 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 qualified | Validated for automotive applications including engine control units and body electronics |
| Low differential resistance | 0.1 Ω enables tight regulation under dynamic load steps in feedback networks |
| Wide voltage range series | Part of 37-type family spanning 2.4 V to 75 V, simplifying BOM consolidation |
| Small SOD323 footprint | 0.95 mm height and 1.35 mm width enable high-density PCB layouts in space-constrained modules |
| Low reverse leakage | ≤ 60 µA at 8 V supports battery-powered systems with multi-year standby life |
Applications
| Automotive Sensor Biasing | Industrial Analog Reference |
|---|---|
|
Use Scenario: Providing stable 10 V bias to pressure and temperature sensor bridges in engine control modules. IC Role / Device Role / Timing Role: Shunt voltage reference regulating excitation voltage for Wheatstone bridge sensors. Use Value: Maintains ±0.5 % bridge output accuracy over −40 °C to +125 °C ambient, enabled by +4.5 mV/K tempco and AEC-Q101 reliability. |
Use Scenario: Generating precise 10 V reference for 12-bit ADCs in programmable logic controllers. IC Role / Device Role / Timing Role: Low-noise, low-drift shunt reference replacing bulkier three-terminal regulators. Use Value: Achieves <1 LSB error contribution via 0.1 Ω rdiff and 110 pF capacitance minimizing high-frequency coupling into reference rail. |
| USB Port Overvoltage Clamp | Low-Power Microcontroller Reset Circuit |
|
Use Scenario: Clamping transient surges on USB VBUS lines in automotive infotainment head units. IC Role / Device Role / Timing Role: Fast-acting Zener clamp absorbing 40 W surges (tp = 100 µs) before downstream IC damage. Use Value: Prevents >12 V transients from reaching USB PHY ICs, leveraging 40 W PZSM rating and 0.1 µs response time. |
Use Scenario: Setting brown-out detection threshold for ARM Cortex-M0+ microcontrollers in smart meters. IC Role / Device Role / Timing Role: Precision voltage threshold element in discrete reset generator circuit. Use Value: Enables accurate 9.5 V–10.5 V reset window with ≤60 µA leakage preserving battery life in 10-year meter deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B10 | Same 10 V nominal, ±5 %, but 300 mW rating and SOD323 package; rdiff = 0.2 Ω (vs. 0.1 Ω) | Lacks AEC-Q101 qualification; not approved for automotive under-hood use | Select when cost sensitivity outweighs automotive qualification and tighter regulation is unnecessary |
| MMSZ4686T1G | 10 V nominal, ±5 %, 500 mW rating in SOD-123; rdiff = 0.15 Ω; Tj max = 150 °C same | Higher power but larger footprint (SOD-123 vs. SOD323); no AEC-Q101 claim in datasheet | Choose for higher continuous power needs where board area permits larger package |
Compared with BZX384-B10 and MMSZ4686T1G, SZMM3Z10VT1GX uniquely combines AEC-Q101 qualification, ultra-low 0.1 Ω differential resistance, and minimal SOD323 footprint-making it optimal for space-constrained, thermally demanding automotive and industrial regulation where precision and reliability are co-prioritized.
Availability
SZMM3Z10VT1GX is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial analog reference design, and USB overvoltage protection requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for SZMM3Z10VT1GX 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.
SZMM3Z10VT1GX belongs to the SZMM3Z series of AEC-Q101-qualified Zener diodes designed specifically for precision voltage regulation and transient protection in harsh automotive and industrial environments.
FAQ
What is the maximum continuous reverse current (IZ) for stable regulation?
The datasheet specifies stable Zener operation at IZ = 7 mA for VZ = 10 V testing. Maximum continuous IZ is derived from Ptot = 300 mW: IZ(max) ≈ 300 mW / 10 V = 30 mA. Operation above 30 mA risks exceeding thermal limits on standard FR4 PCB unless heatsinking is added.
Is the cathode marking visible under optical inspection?
Yes-the cathode is marked by a distinct bar on the top surface of the SOD323 package, aligned with Pin 1 per Figure 11 in the datasheet. This marking is laser-etched and clearly visible under 10× magnification, enabling reliable automated optical inspection (AOI) during SMT assembly.
How does the +4.5 mV/K temperature coefficient affect long-term reference stability?
At +4.5 mV/K, VZ increases by 45 mV over a 10 °C ambient rise. For a 10 V nominal device, this equals +0.45 % drift per 10 °C. In closed-loop systems with temperature compensation or narrow operating ranges (e.g., cabin electronics: −20 °C to +70 °C), total drift remains within ±2.25 %, well within typical 12-bit ADC reference tolerances.
Can SZMM3Z10VT1GX replace older MMBZ5240B in existing designs?
No-MMBZ5240B is a 10 V Zener in SOT-23 package with 350 mW rating and ±5 % tolerance, but lacks AEC-Q101 qualification and has higher rdiff (15 Ω). While electrically similar, SZMM3Z10VT1GX's smaller SOD323 footprint requires PCB land pattern revision, and its automotive qualification makes it unsuitable as a drop-in replacement without revalidation for non-automotive applications.
SZMM3Z10VT1GX 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):
- 10 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 7 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
SZMM3Z10VT1GX FAQ
1.How can I place an order for SZMM3Z10VT1GX through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM3Z10VT1GX 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 SZMM3Z10VT1GX reliable?
The price and inventory of SZMM3Z10VT1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM3Z10VT1GX is usually 5 days.
3.What payment methods are accepted for SZMM3Z10VT1GX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM3Z10VT1GX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM3Z10VT1GX?
SZMM3Z10VT1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM3Z10VT1GX 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 SZMM3Z10VT1GX?
For technical support, including SZMM3Z10VT1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM3Z10VT1GX requirements.
6.How does Aetrix verify that SZMM3Z10VT1GX is sourced from the original manufacturer or authorized distributors?
All SZMM3Z10VT1GX 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 SZMM3Z10VT1GX meets industry standards.
7.What is the process for return or replacement of SZMM3Z10VT1GX?
All SZMM3Z10VT1GX units undergo pre-shipment inspection (PSI). If there is an issue with SZMM3Z10VT1GX, 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 SZMM3Z10VT1GX part is unused and in its original packaging.
Return procedure for SZMM3Z10VT1GX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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