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onsemi SZMM5Z5V6ST1G
- Part No.:
- SZMM5Z5V6ST1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z5V6ST1G.pdf
- Description:
- DIODE ZENER 5.6V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,022
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Product details
Overview
SZMM5Z5V6ST1G from onsemi is a 5.6 V, ±5% tolerance Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation, with 200 Ω max Zener impedance at 5 mA test current and 2.0 µA max reverse leakage at 4.5 V. It delivers precision voltage regulation in space-constrained portable electronics such as smartphone power-rail clamping and USB interface ESD protection circuits.
For engineers reviewing the SZMM5Z5V6ST1G datasheet, pinout, applications, or equivalent options, key selection criteria include its tight 5.6 V nominal Zener voltage, low 200 Ω dynamic impedance, AEC-Q101 qualification, 16 kV HBM ESD rating, and SOD-523 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal voltage reference and transient clamp, leveraging silicon PN-junction Zener breakdown at 5.6 V. Its thermal resistance of 250 °C/W and derating slope of 4.0 mW/°C above 25 °C define safe operating limits on FR-4 boards with 1 cm² copper pads.
The SZMM5Z5V6ST1G exhibits a temperature coefficient of −2.0 mV/°C at 5 mA, enabling stable regulation across −65 °C to +150 °C junction temperature range. Its 200 pF max capacitance at 0 V and 1 MHz supports high-frequency noise suppression without signal integrity degradation in data-line protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.49 V to 5.73 V at 5 mA - ensures precise 5.6 V regulation with ±2.0% tolerance for 5 V rail stabilization |
| Zener Impedance (ZZT) | 200 Ω max at IZT = 5 mA - maintains low voltage deviation under dynamic load transients |
| Power Dissipation (PD) | 500 mW at TA = 25 °C - supports continuous clamping in low-power interfaces without heatsinking |
| ESD Rating | Class 3 (>16 kV) per HBM - provides robust electrostatic discharge immunity for handheld device I/O lines |
| Capacitance (C) | 200 pF max at VR = 0 V, f = 1 MHz - minimizes signal distortion in USB 2.0 or I²C bus protection |
| Reverse Leakage (IR) | 2.0 µA max at VR = 4.5 V - ensures negligible standby current in battery-powered systems |
| Package | SOD-523 (1.20 mm × 0.80 mm × 0.70 mm) - enables placement in <1.0 mm² board area for ultra-compact designs |
Pinout & Package
SOD-523 surface-mount package with cathode marked by polarity band; low-profile 0.7 mm height ideal for thin mobile assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; accepts reverse bias for Zener conduction |
| 2 (Non-banded End) | Anode | Ground or reference return path; completes clamping current loop during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener voltage tolerance | ±2.0% (5.49–5.73 V) enables accurate 5 V rail clamping without post-regulation trimming |
| AEC-Q101 qualification | Validated for automotive infotainment and body electronics requiring extended temperature reliability |
| Pb-Free & RoHS compliance | 100% matte tin lead finish meets global environmental directives and reflow soldering standards |
| Low-profile SOD-523 footprint | 1.20 mm × 0.80 mm outline allows placement between fine-pitch BGA balls or near micro-USB connectors |
| High ESD immunity | 16 kV HBM rating protects USB, SIM, and audio jack interfaces from user-handling surges |
Applications
| Smartphone Power Rail Clamping | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Clamping 5 V USB power input against surge-induced overvoltage during hot-plug events. IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing transient energy to hold rail within ±5% of nominal. Use Value: Prevents damage to PMIC and baseband ICs by limiting peak voltage to ≤6.2 V during 100 ns surges. | Use Scenario: Protecting D+ and D− lines from ESD strikes during cable insertion/removal. IC Role / Device Role / Timing Role: Low-capacitance Zener clamp diverting >15 kV HBM pulses away from PHY transceivers. Use Value: Maintains signal integrity with only 200 pF loading, preserving USB 2.0 eye diagram margins. |
| Wearable Sensor Node Reference | Automotive Infotainment I/O Protection |
Use Scenario: Providing stable 5.6 V reference for ADC biasing in compact health-monitoring patches. IC Role / Device Role / Timing Role: Precision voltage reference with −2.0 mV/°C tempco ensuring <1% drift over −20 °C to +70 °C. Use Value: Eliminates need for external trimming resistors, reducing BOM count and assembly cost. | Use Scenario: Safeguarding touchscreen controller GPIOs in dash-mounted displays exposed to automotive ESD environments. IC Role / Device Role / Timing Role: AEC-Q101-qualified transient suppressor meeting ISO 10605 pulse requirements. Use Value: Guarantees functional safety compliance without additional qualification testing for Tier 1 suppliers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C5V6LT1G | Same 5.6 V nominal, ±5% tolerance, but SOD-323 package (1.7 × 1.3 mm) - 40% larger footprint | Higher 500 mW power rating but 300 Ω ZZT - less effective for fast transients | Choose when board layout allows larger pad spacing and lower impedance is not critical |
| MMSZ5232BT1G | 5.6 V nominal, ±5% tolerance, SOD-123 package (3.7 × 1.6 mm) - 3× larger area than SOD-523 | 700 mW rating but 1000 Ω ZZT - unsuitable for high-speed signal line protection | Prefer for through-hole prototyping or where thermal mass improves long-duration surge handling |
Compared with BZX584C5V6LT1G and MMSZ5232BT1G, the SZMM5Z5V6ST1G offers the smallest footprint and lowest dynamic impedance, making it optimal for miniaturized, high-frequency protection where board space and signal fidelity are constrained.
Availability
SZMM5Z5V6ST1G is available at Aetrix Electronics and suitable for smartphone power management, USB interface protection, and wearable sensor reference applications requiring stable component supply and AEC-Q101-compliant performance.
Supply support for SZMM5Z5V6ST1G 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 targets space-constrained voltage regulation and transient suppression, with design focus on ultra-small SOD-523 packaging, tight Zener tolerances, and automotive-grade reliability for portable and vehicular electronics.
FAQ
What is the exact Zener voltage range specified for SZMM5Z5V6ST1G?
The SZMM5Z5V6ST1G has a guaranteed Zener voltage range of 5.49 V to 5.73 V at 5 mA test current (IZT), corresponding to a ±2.0% tolerance around the nominal 5.6 V rating. This specification is validated per onsemi's Electrical Characteristics table and applies under standard test conditions at TA = 25 °C. The SZMM5Z5V6ST1G maintains this range across its qualified operating temperature span.
Is SZMM5Z5V6ST1G suitable for automotive applications?
Yes, the SZMM5Z5V6ST1G is AEC-Q101 qualified and PPAP capable, with the "SZ" prefix explicitly denoting compliance for automotive and other applications requiring unique site and control change requirements. Its −65 °C to +150 °C operating junction temperature range, 16 kV HBM ESD rating, and Pb-free RoHS-compliant construction make it suitable for infotainment, body control, and ADAS subsystems per onsemi's qualification documentation.
What is the maximum Zener impedance of SZMM5Z5V6ST1G and why does it matter?
The maximum Zener impedance (ZZT) of SZMM5Z5V6ST1G is 200 Ω at IZT = 5 mA. This low dynamic impedance ensures minimal voltage variation during load or transient current changes - critical for maintaining stable clamping in high-speed data lines like USB 2.0 or I²C. A lower ZZT directly translates to tighter regulation and improved noise rejection compared to higher-impedance alternatives such as MMSZ5232BT1G (1000 Ω).
Can SZMM5Z5V6ST1G be used in place of MM5Z5V6ST1G?
Yes, the SZMM5Z5V6ST1G is functionally identical to MM5Z5V6ST1G in electrical and thermal specifications, differing only in qualification level: the "SZ" prefix indicates AEC-Q101 qualification and PPAP capability, while "MM" denotes commercial-grade. Both share the same SOD-523 package, 5.49–5.73 V Zener range, 200 Ω ZZT, and 500 mW power rating. The SZMM5Z5V6ST1G may be substituted where automotive-grade assurance is required.
What is the thermal derating behavior of SZMM5Z5V6ST1G above 25 °C?
SZMM5Z5V6ST1G derates linearly at 4.0 mW/°C above 25 °C ambient temperature on an FR-4 board with 1 cm² copper pad, per onsemi's Maximum Ratings table. At 75 °C ambient, its usable power drops to 300 mW (500 mW − [4.0 mW/°C × 50 °C]). This derating must be applied in thermal design to avoid exceeding the 150 °C maximum junction temperature, ensuring long-term reliability of the SZMM5Z5V6ST1G in enclosed or high-temperature environments.
SZMM5Z5V6ST1G 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):
- 5.6 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 2 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
SZMM5Z5V6ST1G FAQ
1.How can I place an order for SZMM5Z5V6ST1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z5V6ST1G 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 SZMM5Z5V6ST1G reliable?
The price and inventory of SZMM5Z5V6ST1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z5V6ST1G is usually 5 days.
3.What payment methods are accepted for SZMM5Z5V6ST1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z5V6ST1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z5V6ST1G?
SZMM5Z5V6ST1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z5V6ST1G 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 SZMM5Z5V6ST1G?
For technical support, including SZMM5Z5V6ST1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z5V6ST1G requirements.
6.How does Aetrix verify that SZMM5Z5V6ST1G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z5V6ST1G 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 SZMM5Z5V6ST1G meets industry standards.
7.What is the process for return or replacement of SZMM5Z5V6ST1G?
All SZMM5Z5V6ST1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z5V6ST1G, 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 SZMM5Z5V6ST1G part is unused and in its original packaging.
Return procedure for SZMM5Z5V6ST1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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