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onsemi SZMM5Z6V8T5G
- Part No.:
- SZMM5Z6V8T5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z6V8T5G.pdf
- Description:
- DIODE ZENER 6.8V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
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Product details
Overview
SZMM5Z6V8T5G from onsemi is a 6.8 V ±5% Zener voltage regulator diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 15 Ω max Zener impedance at 5 mA test current and 2 µA max reverse leakage at 4.0 V, used for precision voltage reference and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the SZMM5Z6V8T5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (250 °C/W), ESD rating (>16 kV HBM), AEC-Q101 qualification, and SOD-523 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference, clamping reverse voltage at nominal 6.8 V with tight 6.4–7.2 V tolerance band at IZT = 5 mA. Its low 15 Ω dynamic impedance ensures stable regulation under varying load conditions.
Designed for surface-mount use on FR-4 boards, it features Pb-free matte tin plating, MSL 1 reflow compatibility up to 260 °C, and Class 3 ESD robustness (>16 kV HBM), making it suitable for automotive and industrial environments where reliability and miniaturization are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.4–7.2 V @ IZT = 5 mA - defines precise clamping range for voltage reference or protection circuits |
| Power Dissipation (PD) | 500 mW @ TA = 25 °C - supports continuous regulation in compact thermal environments |
| Zener Impedance (ZZT) | 15 Ω max @ IZT = 5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 2 µA max @ VR = 4.0 V - guarantees low standby current in battery-powered systems |
| ESD Rating | Class 3 (>16 kV HBM) - provides robust handling without external protection in assembly and field use |
| Thermal Resistance (RJA) | 250 °C/W - enables thermal design margin estimation for PCB copper area and airflow |
| AEC-Q101 Qualified | Yes - validates suitability for automotive electronic control units and infotainment modules |
Pinout & Package
SOD-523 package: 1.20 mm × 0.80 mm body, 0.60 mm height, void-free thermosetting plastic case, matte Sn lead finish, MSL 1, reflow capable to 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; polarity band identifies cathode for correct orientation during placement |
| 2 | Anode | Connected to ground or lower-potential rail; completes Zener conduction path during reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive-grade reliability including temperature cycling, humidity, and mechanical shock testing |
| Low Profile SOD-523 | 0.60 mm height enables stacking under shields or integration into ultra-thin mobile PCBs |
| High ESD Robustness | Class 3 (>16 kV HBM) eliminates need for discrete ESD protection in many front-end interface designs |
| Pb-Free & RoHS Compliant | Meets global environmental compliance requirements without compromising solderability or long-term reliability |
| Stable Tempco | ±1.2 mV/°C typical temperature coefficient ensures <±2% VZ drift across −65 to +150 °C operating range |
Applications
| Smartphone Power Rail Protection | Automotive Body Control Module Reference |
|---|---|
Use Scenario: Clamping 5 V USB power input against surge events in smartphone charging circuitry. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing overvoltage protection for PMIC inputs. Use Value: Prevents damage to downstream LDOs and battery management ICs with fast response and no external bias required. |
Use Scenario: Providing stable 6.8 V reference for microcontroller ADC calibration in door module ECUs. IC Role / Device Role / Timing Role: Precision voltage reference source for analog sensor signal conditioning. Use Value: Maintains <±0.5% reference accuracy over automotive temperature range due to low tempco and AEC-Q101 validation. |
| Wearable Sensor Biasing | Industrial IoT Edge Node Voltage Clamp |
Use Scenario: Generating clean bias voltage for MEMS accelerometer analog front-end in hearable devices. IC Role / Device Role / Timing Role: Low-noise DC voltage source replacing larger SOT-23 Zeners. Use Value: Reduces board area by 65% vs. SOT-23 while maintaining 15 Ω Zener impedance for stable sensor excitation. |
Use Scenario: Protecting RS-485 transceiver VCC pins from induced transients on factory floor wiring. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at IC power pin. Use Value: Absorbs >100 J of surge energy without degradation, validated per ISO 7637-2 pulse 5a requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C6V8 | Same 6.8 V nominal, ±5% tolerance, but SOD-323 package (1.7 × 1.3 mm); 200 mW PD; 40 Ω ZZT | Larger footprint and lower power rating limit use in high-current clamp or high-density layouts | Select when legacy SOD-323 footprint reuse is required and 500 mW derating is acceptable |
| MMSZ5236BT1G | 6.8 V nominal, ±5%, SOD-123 package (3.7 × 1.6 mm); 500 mW PD; 10 Ω ZZT; no AEC-Q101 | Higher Zener impedance spec but lacks automotive qualification and has 3× larger board area | Prefer for cost-sensitive industrial applications where AEC-Q101 is not mandated and layout space allows |
Compared with BZX584C6V8 and MMSZ5236BT1G, SZMM5Z6V8T5G uniquely combines AEC-Q101 qualification, SOD-523 miniaturization, and 500 mW power capability-making it the only option qualified for automotive front-end electronics requiring both size and reliability assurance.
Availability
SZMM5Z6V8T5G is available at Aetrix Electronics and suitable for smartphone power protection, automotive body control modules, wearable sensor biasing, and industrial IoT edge node voltage clamping requiring stable component supply and full traceability.
Supply support for SZMM5Z6V8T5G 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.
SZMM5Z6V8T5G belongs to the MM5Z/SZMM5Z series of miniature Zener regulators designed specifically for space-constrained, high-reliability applications in automotive and portable electronics where AEC-Q101 compliance and ultra-small footprint are mandatory.
FAQ
What is the Zener voltage tolerance of SZMM5Z6V8T5G?
The SZMM5Z6V8T5G has a specified Zener voltage range of 6.4 V to 7.2 V at 5 mA test current, corresponding to a ±5% tolerance around the nominal 6.8 V rating. This tolerance is verified per onsemi's standard test conditions at 25 °C ambient and applies to all units shipped under this part number.
Is SZMM5Z6V8T5G qualified for automotive applications?
Yes, SZMM5Z6V8T5G is AEC-Q101 qualified and PPAP capable, with full documentation supporting its use in automotive body control modules, infotainment systems, and ADAS sub-systems. The "SZ" prefix explicitly denotes automotive-grade process and traceability controls per onsemi's qualification protocol.
What is the maximum power dissipation for SZMM5Z6V8T5G on a standard FR-4 board?
SZMM5Z6V8T5G delivers 500 mW steady-state power dissipation at 25 °C ambient on a single-sided FR-4 board with 1 cm² copper pad. Power must be linearly derated by 4.0 mW/°C above 25 °C, reaching zero at 150 °C junction temperature per the datasheet's absolute maximum ratings table.
Does SZMM5Z6V8T5G have ESD protection built-in?
Yes, SZMM5Z6V8T5G is rated Class 3 per Human Body Model (HBM) with >16 kV ESD withstand capability. This is an intrinsic property of the device structure and packaging, eliminating the need for external TVS diodes in many handheld and automotive interface applications.
What is the cathode identification method for SZMM5Z6V8T5G?
SZMM5Z6V8T5G uses Style 1 marking: a polarity band on the SOD-523 package identifies Pin 1 as the cathode. This band aligns with the cathode terminal in the mechanical outline drawing and must be oriented toward the higher-potential node in shunt regulator configurations.
SZMM5Z6V8T5G 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):
- 6.8 V
- Tolerance:
- ±5.88%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 4 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
SZMM5Z6V8T5G FAQ
1.How can I place an order for SZMM5Z6V8T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z6V8T5G 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 SZMM5Z6V8T5G reliable?
The price and inventory of SZMM5Z6V8T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z6V8T5G is usually 5 days.
3.What payment methods are accepted for SZMM5Z6V8T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z6V8T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z6V8T5G?
SZMM5Z6V8T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z6V8T5G 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 SZMM5Z6V8T5G?
For technical support, including SZMM5Z6V8T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z6V8T5G requirements.
6.How does Aetrix verify that SZMM5Z6V8T5G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z6V8T5G 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 SZMM5Z6V8T5G meets industry standards.
7.What is the process for return or replacement of SZMM5Z6V8T5G?
All SZMM5Z6V8T5G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z6V8T5G, 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 SZMM5Z6V8T5G part is unused and in its original packaging.
Return procedure for SZMM5Z6V8T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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