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Nexperia USA Inc. SZMM3Z30VT1GX
- Part No.:
- SZMM3Z30VT1GX
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SZMM3Z30VT1GX.pdf
- Description:
- DIODE ZENER 30V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:46,920
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Product details
Overview
SZMM3Z30VT1GX from Nexperia is a Zener voltage regulator diode in SOD323 (SC-76) package, designed for precision voltage reference and overvoltage protection in low-power circuits. It delivers a nominal 30 V Zener voltage (28.0–32.0 V), 21.0 Ω differential resistance at IZ = 2 mA, ±5 % tolerance, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SZMM3Z30VT1GX datasheet, SZMM3Z30VT1GX pinout, SZMM3Z30VT1GX application, or SZMM3Z30VT1GX equivalent, key selection criteria include Zener voltage stability under 2 mA test current, low thermal resistance (Rth(j-sp) = 110 K/W), reverse leakage <300 µA at 0.5 mA, and compatibility with reflow/wave soldering per IPC-J-STD-020.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable DC voltage across load variations and temperature shifts. Its 30 V nominal working voltage targets mid-range regulation needs where higher-voltage references are required without discrete resistor-divider complexity.
With a temperature coefficient of +24.4 to +29.4 mV/K and junction-to-solder-point thermal resistance of 110 K/W, it supports reliable operation up to 150 °C ambient in compact PCB layouts-critical for space-constrained automotive body control modules and industrial sensor signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 28.0 V to 32.0 V at IZ = 2 mA - defines stable regulation window for 30 V rail clamping |
| Differential Resistance rdiff | 21.0 Ω - ensures minimal output voltage shift under ±1 mA load current variation |
| Reverse Current IR | <300 µA at VR = 22.5 V - guarantees low quiescent power loss in standby mode |
| Total Power Dissipation Ptot | 300 mW at Tamb = 25 °C - limits thermal rise on FR4 PCB with standard footprint |
| Non-repetitive Peak Power PZSM | 40 W for tp = 100 µs - enables transient surge suppression in ESD-critical interfaces |
| Junction Temperature Tj | 150 °C maximum - supports operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including HTOL, TC, and HAST stress tests |
Pinout & Package
The SZMM3Z30VT1GX uses an SOD323 (SC-76) surface-mount plastic package measuring 1.8 mm × 1.35 mm × 0.95 mm, optimized for high-density PCB assembly and automated reflow processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; marking bar on package identifies this terminal |
| 2 (A) | Anode | Connected to ground or lower-potential reference; completes reverse-bias path for Zener action |
Key Features
| Feature | Design Value |
|---|---|
| Low differential resistance | 21.0 Ω at IZ = 2 mA - improves regulation accuracy under dynamic load changes |
| AEC-Q101 qualification | Validated for automotive applications including engine control units and ADAS sensors |
| Small SOD323 footprint | 1.8 mm × 1.35 mm - saves board space vs. larger DO-35 or SOD123 packages |
| Wide voltage range series | 2.4 V to 75 V coverage - allows single-source procurement across multiple design generations |
| Thermal performance | Rth(j-sp) = 110 K/W - enables direct thermal coupling to copper pour for improved power handling |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage reference for analog-to-digital conversion of HVAC actuator feedback signals. IC Role / Device Role / Timing Role: Zener diode provides stable 30 V reference to op-amp bias network and ADC input scaling circuitry. Use Value: Maintains ±0.5 % reference accuracy across −40 °C to +125 °C ambient, ensuring consistent sensor calibration. |
Use Scenario: Overvoltage clamp protecting 24 V industrial IO module inputs from field-wiring transients. IC Role / Device Role / Timing Role: Shunts surge energy above 30 V to ground before reaching downstream protection ICs or microcontroller GPIOs. Use Value: Withstands 40 W non-repetitive surges (100 µs), preventing latch-up or permanent damage during cable disconnect events. |
| Portable Medical Device Power Rail | Smart Lighting Driver Reference |
Use Scenario: Precision voltage reference for battery fuel gauge IC in handheld diagnostic equipment. IC Role / Device Role / Timing Role: Supplies clean 30 V reference to coulomb counter IC requiring low-drift, low-noise bias. Use Value: Low 300 µA reverse leakage at 22.5 V minimizes standby current drain, extending battery life by >8 % in sleep mode. |
Use Scenario: Regulation of auxiliary 30 V supply for LED driver IC gate drive circuitry. IC Role / Device Role / Timing Role: Stabilizes gate drive voltage to ensure consistent MOSFET switching timing across temperature. Use Value: 21.0 Ω differential resistance reduces output ripple by 12 mV peak-to-peak under 10 mA load step, improving dimming linearity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B30,115 (Nexperia) | Same 30 V nominal Zener voltage but SOD323 package with tighter ±2 % tolerance and lower 15 Ω rdiff | Higher precision needed in metrology-grade instrumentation; not AEC-Q101 qualified | Select when ±2 % tolerance and sub-15 Ω regulation stiffness outweigh automotive qualification requirements |
| MMBZ5260B-7-F (Diodes Inc.) | 30 V Zener in SOT-23 package; 500 mW Ptot, but higher rdiff (35 Ω) and no AEC-Q101 rating | Consumer electronics with higher power margin and no automotive compliance mandate | Choose for cost-sensitive non-automotive designs where board space is less constrained than thermal performance |
Compared with BZX384-B30,115, SZMM3Z30VT1GX trades ±2 % tolerance for AEC-Q101 compliance and automotive thermal robustness; versus MMBZ5260B-7-F, it offers superior thermal resistance (110 vs. 200 K/W) and guaranteed automotive reliability at lower power dissipation.
Availability
SZMM3Z30VT1GX is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, portable medical devices, and smart lighting drivers requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SZMM3Z30VT1GX 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 logic, analog, and discrete components, with leadership in automotive-qualified parts.
The SZMM3Z series is part of Nexperia's AEC-Q101-qualified Zener diode portfolio, engineered specifically for voltage reference and transient suppression in harsh-environment automotive and industrial systems.
FAQ
What is the maximum continuous reverse current the SZMM3Z30VT1GX can sustain without degradation?
The device is rated for a maximum forward current of 200 mA, but its Zener operation relies on controlled reverse current. At 30 V, sustained reverse current must remain ≤10 mA to stay within the 300 mW total power limit at 25 °C ambient. Derating is required above 25 °C per the Rth(j-a) = 415 K/W curve.
How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
At 30 V nominal, the temperature coefficient is +24.4 to +29.4 mV/K. Over a 165 K span, this introduces a worst-case drift of ~4.8 V-so actual regulation ranges from ~25.2 V to ~34.8 V. For tight tolerance applications, external compensation or tighter-tolerance variants like BZX384-B30 are recommended.
Can SZMM3Z30VT1GX be used in parallel for higher power dissipation?
No-Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, but even within the same series, minor VZ mismatches cause current hogging. Parallel operation risks thermal runaway and premature failure; use a single higher-power device or active regulation instead.
Is the SOD323 package compatible with standard IPC-J-STD-020 reflow profiles?
Yes-the SOD323 outline meets IPC-J-STD-020D Level 1 requirements. Nexperia specifies a peak reflow temperature of 260 °C for 30 seconds max, with ramp rates ≤3 °C/s pre- and post-peak. The 0.95 mm height and 1.35 mm width align with standard stencil apertures for 0.3 mm thickness paste deposits.
SZMM3Z30VT1GX 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):
- 30 V
- Tolerance:
- ±5%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 21 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
SZMM3Z30VT1GX FAQ
1.How can I place an order for SZMM3Z30VT1GX through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM3Z30VT1GX 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 SZMM3Z30VT1GX reliable?
The price and inventory of SZMM3Z30VT1GX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM3Z30VT1GX is usually 5 days.
3.What payment methods are accepted for SZMM3Z30VT1GX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM3Z30VT1GX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM3Z30VT1GX?
SZMM3Z30VT1GX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM3Z30VT1GX 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 SZMM3Z30VT1GX?
For technical support, including SZMM3Z30VT1GX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM3Z30VT1GX requirements.
6.How does Aetrix verify that SZMM3Z30VT1GX is sourced from the original manufacturer or authorized distributors?
All SZMM3Z30VT1GX 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 SZMM3Z30VT1GX meets industry standards.
7.What is the process for return or replacement of SZMM3Z30VT1GX?
All SZMM3Z30VT1GX units undergo pre-shipment inspection (PSI). If there is an issue with SZMM3Z30VT1GX, 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 SZMM3Z30VT1GX part is unused and in its original packaging.
Return procedure for SZMM3Z30VT1GX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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