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onsemi SZMM5Z3V0T5G
- Part No.:
- SZMM5Z3V0T5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z3V0T5G.pdf
- Description:
- DIODE ZENER 3V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:7,900
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Product details
Overview
SZMM5Z3V0T5G from onsemi is a 3.0 V Zener voltage regulator diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with ±10% tolerance (2.8–3.2 V), 100 Ω max Zener impedance at 2 mA test current, and 10 µA max reverse leakage at 1.0 V. It provides precision low-voltage regulation in space-constrained portable electronics.
For engineers reviewing the SZMM5Z3V0T5G datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q101 qualification, 16 kV HBM ESD rating, SOD-523 footprint compatibility, and stable 3.0 V reference under low-current bias conditions.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining a stable 3.0 V reference across its cathode-anode terminals when reverse-biased above its breakdown threshold. Its 2 mA Zener test current and 100 Ω dynamic impedance ensure predictable regulation in low-power bias networks.
The SOD-523 package enables high-density PCB placement with 1.20 mm × 0.80 mm body and 0.7 mm height, while its Pb-free matte tin finish supports lead-free reflow up to 260 °C and meets MSL 1 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.0 V nominal (2.8–3.2 V range); provides stable 3.0 V reference for low-voltage biasing and overvoltage clamping. |
| Power Rating (PD) | 500 mW at 25 °C; derates linearly at 4.0 mW/°C above ambient - limits usable current to ~167 mA at 3.0 V in continuous operation. |
| Zener Impedance (ZZT) | 100 Ω max at IZT = 2 mA; ensures minimal output voltage variation under small-signal load changes. |
| Reverse Leakage (IR) | 10 µA max at VR = 1.0 V; guarantees low quiescent current in standby or sensing circuits. |
| ESD Rating | Class 3 (>16 kV) per HBM; protects against electrostatic discharge during handling and board assembly without external protection. |
| Operating Temperature | −65 °C to +150 °C junction range; supports automotive under-hood and industrial ambient environments. |
Pinout & Package
SOD-523 surface-mount package: 1.20 mm × 0.80 mm body, 0.7 mm height, void-free thermosetting plastic case, matte tin lead finish, MSL 1 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; accepts reverse bias current to maintain 3.0 V reference. |
| 2 | Anode | Connected to ground or lower-potential rail; completes shunt regulation path for current sink operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including infotainment power rails and sensor biasing where reliability under thermal cycling and vibration is critical. |
| 16 kV HBM ESD Protection | Eliminates need for discrete ESD protection components in handheld and wearable designs with exposed I/O or compact layouts. |
| 0.7 mm Low Profile | Enables stacking under connectors or beneath shields in ultra-thin mobile PCBs without mechanical interference. |
| Pb-Free & RoHS Compliant | Meets global environmental compliance mandates and supports lead-free reflow profiles up to 260 °C without delamination risk. |
Applications
| Smartphone Power Management | Automotive Cabin Sensors |
|---|---|
|
Use Scenario: Regulating reference voltage for battery fuel gauges and PMIC monitoring circuits in smartphones with tight board area constraints. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 3.0 V bias to ADC inputs and comparator thresholds. Use Value: Enables accurate state-of-charge estimation using only 0.7 mm vertical space and no additional passive filtering. |
Use Scenario: Clamping transient spikes on LIN bus interface lines and sensor supply rails in automotive cabin modules. IC Role / Device Role / Timing Role: Overvoltage protection element absorbing ESD events and load-dump transients before they reach sensitive analog front-ends. Use Value: Achieves >16 kV HBM immunity without increasing PCB footprint beyond existing SOD-523 pad layout. |
| Wearable Biometric Monitors | Industrial IoT Edge Nodes |
|
Use Scenario: Providing precise 3.0 V reference for optical heart-rate sensor biasing in wrist-worn devices. IC Role / Device Role / Timing Role: Low-leakage Zener source ensuring stable LED drive current and photodiode amplifier offset control. Use Value: Maintains <10 µA leakage at 1.0 V reverse bias, minimizing battery drain in multi-week wearable deployments. |
Use Scenario: Stabilizing microcontroller reset threshold and RTC backup voltage in battery-powered edge gateways. IC Role / Device Role / Timing Role: Standby-mode voltage clamp ensuring reliable brown-out detection across −40 °C to +85 °C operating range. Use Value: Guarantees functional operation down to −65 °C storage and up to +150 °C junction temperature during peak processing loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MM5Z3V0T5G | Same electrical specs and SOD-523 package, but not AEC-Q101 qualified; lacks automotive traceability and PPAP documentation. | Restricted to commercial-grade consumer electronics; unsuitable for automotive OEM or Tier-1 BOMs requiring PPAP submission. | Select MM5Z3V0T5G only for cost-sensitive non-automotive designs where AEC-Q101 is not mandated. |
| BZX584-C3V0 | 3.0 V Zener in SOD-323 package (1.7 × 1.3 mm); higher 250 mW power rating but larger footprint and no AEC-Q101 certification. | Requires PCB layout change due to different pad dimensions and polarity marking; not drop-in compatible. | Choose BZX584-C3V0 only if higher power margin is needed and board real estate allows SOD-323 placement. |
Compared with MM5Z3V0T5G and BZX584-C3V0, SZMM5Z3V0T5G uniquely combines AEC-Q101 qualification, 500 mW rating, and minimal SOD-523 footprint - making it the sole option for automotive-grade 3.0 V regulation in space-limited modules.
Availability
SZMM5Z3V0T5G is available at Aetrix Electronics and suitable for smartphone power management, automotive cabin sensors, wearable biometric monitors, and industrial IoT edge nodes requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SZMM5Z3V0T5G 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
onsemi (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
SZMM5Z3V0T5G belongs to the MM5ZxxxT1G/SZMM5ZxxxT1G Zener regulator family, engineered specifically for high-density, low-power voltage reference and overvoltage protection in portable and automotive electronics.
FAQ
What is the Zener voltage tolerance of SZMM5Z3V0T5G?
The SZMM5Z3V0T5G has a standard tolerance of ±10%, with a specified Zener voltage range of 2.8 V to 3.2 V at 2 mA test current (IZT). This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet (Rev. 19, April 2025), and applies directly to the SZMM5Z3V0T5G variant as part of the SZ-prefix automotive-qualified series.
Is SZMM5Z3V0T5G suitable for automotive applications?
Yes, SZMM5Z3V0T5G is explicitly AEC-Q101 qualified and PPAP capable, as stated in the "Specification Features" section of the onsemi datasheet. The "SZ" prefix denotes compliance with automotive-specific site and control change requirements, and the device is rated for junction temperatures from −65 °C to +150 °C - meeting typical under-hood and cabin module environmental demands.
What is the maximum reverse leakage current for SZMM5Z3V0T5G?
The maximum reverse leakage current (IR) for SZMM5Z3V0T5G is 10 µA at VR = 1.0 V and TA = 25 °C, per the Electrical Characteristics table on page 3 of the onsemi datasheet. This value is measured under standardized conditions and applies directly to the SZMM5Z3V0T5G part number.
Does SZMM5Z3V0T5G have ESD protection?
Yes, SZMM5Z3V0T5G features Class 3 ESD protection (>16 kV) per the Human Body Model (HBM), as documented in the "Specification Features" section of the onsemi datasheet. This rating is intrinsic to the device structure and does not require external components to achieve robust handling and board-level ESD resilience.
What is the thermal resistance (RJA) of SZMM5Z3V0T5G on FR-4 board?
The junction-to-ambient thermal resistance (RJA) of SZMM5Z3V0T5G is 250 °C/W when mounted on a single-sided FR-4 PCB with a 1 cm² copper pad, as specified in the "Maximum Ratings" table on page 1 of the onsemi datasheet. This value governs power derating above 25 °C ambient and is validated for the SOD-523 package configuration used by SZMM5Z3V0T5G.
SZMM5Z3V0T5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3 V
- Tolerance:
- ±6.67%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
SZMM5Z3V0T5G FAQ
1.How can I place an order for SZMM5Z3V0T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z3V0T5G 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 SZMM5Z3V0T5G reliable?
The price and inventory of SZMM5Z3V0T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z3V0T5G is usually 5 days.
3.What payment methods are accepted for SZMM5Z3V0T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z3V0T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z3V0T5G?
SZMM5Z3V0T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z3V0T5G 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 SZMM5Z3V0T5G?
For technical support, including SZMM5Z3V0T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z3V0T5G requirements.
6.How does Aetrix verify that SZMM5Z3V0T5G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z3V0T5G 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 SZMM5Z3V0T5G meets industry standards.
7.What is the process for return or replacement of SZMM5Z3V0T5G?
All SZMM5Z3V0T5G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z3V0T5G, 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 SZMM5Z3V0T5G part is unused and in its original packaging.
Return procedure for SZMM5Z3V0T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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