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onsemi SZMM5Z6V8T1G
- Part No.:
- SZMM5Z6V8T1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z6V8T1G.pdf
- Description:
- DIODE ZENER 6.8V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:8,290
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Product details
Overview
SZMM5Z6V8T1G from onsemi is a 6.8 V ±5% Zener 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. It provides precision voltage regulation and overvoltage clamping in space-constrained portable electronics.
For engineers reviewing the SZMM5Z6V8T1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), low-profile SOD-523 footprint (1.20 mm × 0.80 mm), AEC-Q101 qualification, 16 kV HBM ESD rating, and thermal derating behavior above 25 °C.
Technical Context
This device operates as a two-terminal voltage reference and transient clamp, leveraging silicon PN junction breakdown. Its Zener voltage is specified at IZT = 5 mA with nominal 6.8 V, min 6.4 V, max 7.2 V, and exhibits a positive temperature coefficient of +1.2 mV/°C.
The SOD-523 package enables high-density PCB placement with MSL 1 reflow compatibility (260 °C peak), 100% matte tin lead finish, and UL 94 V-0 compliant epoxy. Thermal resistance is 250 °C/W junction-to-ambient on FR-4 board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.8 V nominal, 6.4–7.2 V range at 5 mA - defines clamping threshold for overvoltage protection |
| Power Rating (PD) | 500 mW at 25 °C, derates 4.0 mW/°C - limits continuous dissipation in compact layouts |
| Zener Impedance (ZZT) | 15 Ω max at 5 mA - ensures stable regulation under dynamic load changes |
| Reverse Leakage (IR) | 2 µA max at 4.0 V - minimizes standby current in battery-powered systems |
| ESD Rating | Class 3 (>16 kV HBM) - protects against electrostatic discharge during handling and assembly |
| Package | SOD-523 (1.20 mm × 0.80 mm × 0.70 mm) - enables placement on fine-pitch, high-density PCBs |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability and stress testing per JESD22-A114 |
Pinout & Package
SOD-523 surface-mount package with cathode marked by polarity band. Body dimensions: 1.20 mm × 0.80 mm × 0.70 mm. Mounting position: any. Lead finish: 100% matte Sn. RoHS compliant and Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output or protected node; reverse-biased during Zener operation |
| 2 (Unbanded End) | Anode | Connected to ground or lower potential reference; completes bias path for clamping |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD-523 footprint | Enables integration into ultra-thin handheld devices and multi-layer mobile PCBs without height interference |
| ±5% Zener voltage tolerance | Provides predictable clamping accuracy across production lots without post-assembly trimming |
| 16 kV HBM ESD rating | Eliminates need for external ESD protection in front-end I/O stages of consumer portables |
| AEC-Q101 qualification | Supports use in automotive infotainment, body control modules, and ADAS sensor interfaces |
| 500 mW power rating with 250 °C/W RJA | Allows direct mounting on standard FR-4 without heatsinking for intermittent surge suppression |
Applications
| USB Port Overvoltage Protection | Smartphone Battery Monitoring Circuit |
|---|---|
|
Use Scenario: Clamps transient surges on USB VBUS line during hot-plug events or adapter switching. IC Role / Device Role / Timing Role: Two-terminal shunt regulator acting as primary overvoltage clamp before PMIC input. Use Value: Prevents >7.2 V transients from damaging downstream USB controller ICs rated for 5.5 V absolute maximum. |
Use Scenario: Provides stable 6.8 V reference for ADC measurement of Li-ion battery pack voltage. IC Role / Device Role / Timing Role: Precision voltage reference source feeding analog front-end of fuel gauge IC. Use Value: Enables ±1% battery state-of-charge estimation accuracy using 12-bit internal ADC with known reference. |
| Automotive Interior Lighting Driver | Wearable Fitness Tracker Power Rail Clamp |
|
Use Scenario: Regulates gate drive voltage for LED driver MOSFETs in 12 V cabin lighting modules. IC Role / Device Role / Timing Role: Zener clamp stabilizing bootstrap supply rail against load dump spikes. Use Value: Maintains MOSFET gate-source voltage within safe operating area during ISO 7637-2 pulse 5a transients. |
Use Scenario: Protects BLE SoC I/O pins from ESD and coupling-induced voltage excursions during wrist motion. IC Role / Device Role / Timing Role: Bidirectional ESD clamp and low-energy overvoltage limiter on sensor interface lines. Use Value: Survives repeated 15 kV contact discharge events while adding <0.15 mm height to ultra-slim wearable form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C6V8 | Same 6.8 V nominal, ±5% tolerance, but SOD-323 package (1.7 × 1.3 mm); 300 mW rating; no AEC-Q101 qualification | Larger footprint and lower power limit restrict use in ultra-dense layouts or automotive environments | Select when cost sensitivity outweighs space constraints and automotive compliance is not required |
| MMSZ5236BT1G | 6.8 V nominal, ±5%, SOD-123 package (3.7 × 1.6 mm); 500 mW rating; no AEC-Q101; 10 kV HBM ESD | 3× larger board area required; incompatible with fine-pitch mobile PCBs; lower ESD robustness | Prefer only for industrial non-automotive designs where SOD-123 is already standardized |
Compared with BZX584-C6V8 and MMSZ5236BT1G, SZMM5Z6V8T1G delivers identical regulation performance in the smallest possible footprint, with certified automotive reliability and industry-leading 16 kV ESD immunity-critical for next-generation portable and vehicle-integrated electronics.
Availability
SZMM5Z6V8T1G is available at Aetrix Electronics and suitable for USB power protection, smartphone battery monitoring, automotive interior lighting, wearable ESD clamping, and high-density PC board voltage regulation requiring stable component supply and long-term lifecycle support.
Supply support for SZMM5Z6V8T1G 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.
SZMM5Z6V8T1G belongs to the MM5Z/SZMM5ZxxxT1G Zener regulator family, designed specifically for space-constrained, high-reliability voltage reference and transient suppression in portable and automotive electronics.
FAQ
What is the Zener voltage tolerance of SZMM5Z6V8T1G?
The SZMM5Z6V8T1G has a standard tolerance of ±5% around its nominal 6.8 V Zener voltage, meaning the actual breakdown voltage falls between 6.4 V and 7.2 V when tested at 5 mA. This tolerance is guaranteed across the full operating temperature range and is verified per onsemi's production test flow for the SZMM5ZxxxT1G series.
Is SZMM5Z6V8T1G qualified for automotive applications?
Yes, SZMM5Z6V8T1G is AEC-Q101 qualified and PPAP capable, meeting the stress test requirements for discrete semiconductors used in automotive electronics. The "SZ" prefix explicitly denotes automotive-grade manufacturing controls, site-specific process validation, and extended reliability testing beyond commercial-grade equivalents.
What is the maximum reverse leakage current for SZMM5Z6V8T1G?
The maximum reverse leakage current for SZMM5Z6V8T1G is 2 µA at VR = 4.0 V and TA = 25 °C, as specified in the Electrical Characteristics table on page 3 of the onsemi datasheet. This value remains valid across the full storage temperature range and supports low-power design goals in battery-operated devices.
Can SZMM5Z6V8T1G be used in high-density PCB layouts?
Yes, SZMM5Z6V8T1G uses the SOD-523 package measuring just 1.20 mm × 0.80 mm × 0.70 mm, making it one of the smallest standardized Zener packages available. Its compact size and low profile allow placement adjacent to fine-pitch BGAs and in multi-layer stackups where vertical clearance is limited to under 0.8 mm.
What is the thermal derating behavior of SZMM5Z6V8T1G?
SZMM5Z6V8T1G derates linearly at 4.0 mW/°C above 25 °C ambient temperature, with a junction-to-ambient thermal resistance of 250 °C/W on a standard FR-4 board with 1 cm² copper pad. Full 500 mW power dissipation is only guaranteed at TA ≤ 25 °C; at 85 °C ambient, maximum allowable power drops to 260 mW.
SZMM5Z6V8T1G 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:
- ±6%
- 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
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
SZMM5Z6V8T1G FAQ
1.How can I place an order for SZMM5Z6V8T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z6V8T1G 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 SZMM5Z6V8T1G reliable?
The price and inventory of SZMM5Z6V8T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z6V8T1G is usually 5 days.
3.What payment methods are accepted for SZMM5Z6V8T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z6V8T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z6V8T1G?
SZMM5Z6V8T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z6V8T1G 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 SZMM5Z6V8T1G?
For technical support, including SZMM5Z6V8T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z6V8T1G requirements.
6.How does Aetrix verify that SZMM5Z6V8T1G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z6V8T1G 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 SZMM5Z6V8T1G meets industry standards.
7.What is the process for return or replacement of SZMM5Z6V8T1G?
All SZMM5Z6V8T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z6V8T1G, 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 SZMM5Z6V8T1G part is unused and in its original packaging.
Return procedure for SZMM5Z6V8T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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