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onsemi SZMM5Z6V8ST1G
- Part No.:
- SZMM5Z6V8ST1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z6V8ST1G.pdf
- Description:
- DIODE ZENER 6.8V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,777
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Product details
Overview
SZMM5Z6V8ST1G from onsemi is a 6.8 V ±5% Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation, with 15 Ω max Zener impedance at 5 mA test current and 4.0 µA max reverse leakage at 5.44 V, used for precision voltage regulation and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the SZMM5Z6V8ST1G 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 for automotive use, and Class 3 ESD rating (>16 kV HBM).
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to clamp voltage at 6.65–6.93 V under 5 mA test current. Its tight tolerance (±5%) and low dynamic impedance (15 Ω max at IZT) support stable regulation in low-power biasing and feedback networks.
Designed for surface-mount assembly on FR-4 PCBs, it features Pb-free matte tin plating, MSL 1 reflow compatibility (260 °C peak), and operates across −65 °C to +150 °C junction temperature range-enabling use in automotive cabin modules and industrial handheld devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.65 V min to 6.93 V max at 5 mA - ensures precise clamping within ±5% of nominal 6.8 V |
| Power Dissipation (PD) | 500 mW at 25 °C - supports continuous regulation in low-power signal paths without heatsinking |
| Zener Impedance (ZZT) | 15 Ω max at IZT = 5 mA - minimizes output voltage variation under load transients |
| Reverse Leakage (IR) | 4.0 µA max at VR = 5.44 V - maintains low quiescent current in battery-powered standby circuits |
| ESD Rating | Class 3 (>16 kV HBM) - protects against electrostatic discharge during handling and board assembly |
| Package | SOD-523 (1.20 mm × 0.80 mm × 0.70 mm) - enables high-density routing on compact PCBs |
Pinout & Package
SOD-523 package with cathode marked by polarity band; body dimensions 1.20 mm × 0.80 mm × 0.70 mm; mounting position unrestricted; qualified for reflow up to 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased terminal during Zener operation |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential reference; completes conduction path during breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Tight voltage tolerance | ±5% Zener voltage (6.65–6.93 V) enables accurate reference generation without trimming |
| AEC-Q101 qualification | Validated for automotive applications including infotainment power rails and sensor biasing |
| Pb-free and RoHS compliant | Meets global environmental regulations; matte Sn finish ensures reliable solder wetting |
| Low-profile SOD-523 package | 0.7 mm height allows stacking under shields or placement near connectors in slim devices |
Applications
| Smartphone Power Management | Automotive Cabin Sensors |
|---|---|
Use Scenario: Regulating bias voltage for camera module LDO feedback networks in smartphones. IC Role / Device Role / Timing Role: Zener diode providing stable 6.8 V reference to set LDO output voltage. Use Value: Tight ±5% tolerance ensures consistent camera sensor performance across production batches. | Use Scenario: Overvoltage protection for 5 V supply rail feeding cabin temperature and humidity sensors. IC Role / Device Role / Timing Role: Clamping transient spikes above 6.93 V to prevent sensor IC damage. Use Value: 16 kV HBM ESD rating withstands handling and in-vehicle ESD events. |
| Industrial Handheld Scanners | Medical Wearable Battery Monitoring |
Use Scenario: Providing reference voltage for ADC input scaling in barcode scanner analog front-end. IC Role / Device Role / Timing Role: Two-terminal voltage reference stabilizing measurement accuracy. Use Value: 15 Ω Zener impedance minimizes code shift during battery voltage sag. | Use Scenario: Monitoring lithium-ion cell voltage via resistive divider with precision clamping. IC Role / Device Role / Timing Role: Protecting microcontroller ADC input from overvoltage during charging surges. Use Value: −65 °C to +150 °C operating range supports wearable use in varying ambient conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C6V8LT1G | Same 6.8 V ±5%, but SOD-323 package (1.7 mm × 1.3 mm); 200 mW power rating | Lower power handling limits use in higher-current regulation; larger footprint reduces board density | Select when legacy SOD-323 layout exists and 200 mW suffices |
| MMSZ5236BT1G | 6.8 V ±5%, SOD-123 package (3.7 mm × 1.6 mm); 500 mW rating; no AEC-Q101 qualification | Larger size restricts use in ultra-compact designs; lacks automotive qualification | Choose for cost-sensitive industrial applications where AEC-Q101 is not required |
Compared with BZX584C6V8LT1G and MMSZ5236BT1G, SZMM5Z6V8ST1G offers the smallest footprint (SOD-523), full AEC-Q101 compliance, and identical 500 mW rating-making it optimal for next-gen automotive and portable electronics requiring miniaturization and reliability assurance.
Availability
SZMM5Z6V8ST1G is available at Aetrix Electronics and suitable for smartphone power management, automotive cabin sensors, and industrial handheld scanners requiring stable component supply with guaranteed long-term sourcing.
Supply support for SZMM5Z6V8ST1G 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MM5Z/SZMM5Z series is designed for precision voltage regulation in space-constrained, high-reliability applications-including automotive ECUs, portable medical devices, and consumer electronics requiring tight-tolerance Zener references.
FAQ
What is the Zener voltage tolerance of SZMM5Z6V8ST1G?
The SZMM5Z6V8ST1G has a Zener voltage tolerance of ±5%, with a specified range of 6.65 V to 6.93 V at 5 mA test current. This tight tolerance ensures predictable clamping behavior in precision reference and protection circuits. The value is measured and guaranteed per onsemi's Electrical Characteristics table and applies across the full operating temperature range.
Is SZMM5Z6V8ST1G qualified for automotive applications?
Yes, SZMM5Z6V8ST1G is AEC-Q101 qualified and PPAP capable, with the "SZ" prefix indicating compliance for automotive and other applications requiring unique site and control change requirements. It meets stringent reliability testing for temperature cycling, humidity, and mechanical shock-making it suitable for cabin electronics, body control modules, and sensor interfaces.
What is the maximum power dissipation for SZMM5Z6V8ST1G at 75 °C ambient?
At 75 °C ambient, SZMM5Z6V8ST1G derates linearly from its 500 mW rating at 25 °C using a 4.0 mW/°C slope. This yields 500 mW − (50 °C × 4.0 mW/°C) = 300 mW maximum allowable dissipation. Thermal resistance (RJA) is 250 °C/W on FR-4 with 1 cm² copper pad, confirming this derating aligns with JEDEC standards.
Does SZMM5Z6V8ST1G have an ESD rating, and if so, what is it?
SZMM5Z6V8ST1G carries a Class 3 Human Body Model (HBM) ESD rating exceeding 16 kV, verified per ANSI/ESDA/JEDEC JS-001. This high immunity protects the device during automated handling, PCB assembly, and end-use in environments prone to static discharge-such as factory floors and automotive service bays.
What is the forward voltage drop of SZMM5Z6V8ST1G at 10 mA?
The forward voltage drop (VF) of SZMM5Z6V8ST1G is guaranteed to be ≤0.9 V at 10 mA forward current, per the onsemi datasheet's Electrical Characteristics table. This low VF supports efficient use in polarity-protection circuits and bidirectional clamping configurations where forward conduction may occur.
SZMM5Z6V8ST1G 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:
- ±2%
- 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
SZMM5Z6V8ST1G FAQ
1.How can I place an order for SZMM5Z6V8ST1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z6V8ST1G 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 SZMM5Z6V8ST1G reliable?
The price and inventory of SZMM5Z6V8ST1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z6V8ST1G is usually 5 days.
3.What payment methods are accepted for SZMM5Z6V8ST1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z6V8ST1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z6V8ST1G?
SZMM5Z6V8ST1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z6V8ST1G 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 SZMM5Z6V8ST1G?
For technical support, including SZMM5Z6V8ST1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z6V8ST1G requirements.
6.How does Aetrix verify that SZMM5Z6V8ST1G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z6V8ST1G 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 SZMM5Z6V8ST1G meets industry standards.
7.What is the process for return or replacement of SZMM5Z6V8ST1G?
All SZMM5Z6V8ST1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z6V8ST1G, 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 SZMM5Z6V8ST1G part is unused and in its original packaging.
Return procedure for SZMM5Z6V8ST1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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