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onsemi SZMM5Z8V2T1G
- Part No.:
- SZMM5Z8V2T1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z8V2T1G.pdf
- Description:
- DIODE ZENER 8.2V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:5,315
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Product details
Overview
SZMM5Z8V2T1G from onsemi is a 500 mW, 8.2 V Zener diode in SOD-523 package, designed for precision voltage regulation and overvoltage protection in space-constrained circuits. It delivers ±5% tolerance at 5 mA test current, 15 Ω dynamic impedance, and supports ≤0.7 µA leakage at 5.0 V reverse bias - ideal for voltage reference and ESD-sensitive portable power rails.
For engineers reviewing the SZMM5Z8V2T1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy, low-profile SOD-523 footprint compatibility, thermal derating behavior above 25 °C, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in silicon PN junction. Its 8.2 V nominal Zener voltage is specified at IZT = 5 mA with ±5% tolerance (7.7–8.7 V), and exhibits a positive temperature coefficient of +3.2 mV/°C - enabling predictable drift compensation in stable reference designs.
It features Class 3 HBM ESD rating (>16 kV), Pb-free matte tin termination, and MSL 1 reflow capability up to 260 °C. The SOD-523 package provides 1.20 mm × 0.80 mm body size and 0.7 mm height, optimized for high-density PCB layouts in handheld and automotive electronics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V nominal, 7.7–8.7 V min/max at 5 mA - defines regulated output voltage under stable bias conditions |
| Power Rating (PD) | 500 mW at 25 °C, derates 4.0 mW/°C above ambient - sets maximum continuous dissipation without thermal runaway |
| Zener Impedance (ZZT) | 15 Ω max at 5 mA - determines regulation stiffness and AC ripple rejection capability |
| Leakage Current (IR) | 0.7 µA max at 5.0 V reverse bias - ensures minimal standby current in battery-powered systems |
| ESD Rating | Class 3 (>16 kV) per HBM - provides robust handling during assembly and end-use in consumer portables |
| Package | SOD-523 (Case 502, Style 1) - 1.20 mm × 0.80 mm × 0.70 mm footprint enables ultra-dense routing on mobile PCBs |
| AEC-Q101 Qualified | Yes - validates suitability for automotive infotainment, body control, and ADAS subsystems requiring extended temperature operation |
Pinout & Package
SOD-523 surface-mount package with cathode marked by polarity band (Pin 1), anode unmarked (Pin 2). Body dimensions: 1.20 mm × 0.80 mm × 0.70 mm; lead finish: 100% matte Sn; MSL 1 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Unmarked End) | Anode | Connected to circuit ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SOD-523 footprint | Enables placement in <1.0 mm² board area - critical for multi-rail PMIC decoupling in smartphones |
| ±5% Zener voltage tolerance | Supports tight reference accuracy without external trimming in cost-sensitive consumer applications |
| 15 Ω Zener impedance at 5 mA | Delivers <15 mV output variation per 1 mA load change - suitable for analog sensor biasing |
| AEC-Q101 qualification | Validates operation across −65 °C to +150 °C junction range - required for under-hood automotive modules |
| 16 kV HBM ESD rating | Eliminates need for discrete ESD protection in front-end voltage rails of USB-C and display interfaces |
Applications
| Battery Voltage Monitoring | USB Power Rail Clamping |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage in wearable health trackers using ADC input with internal reference scaling. IC Role / Device Role / Timing Role: Precision 8.2 V Zener reference providing stable scaling ratio for 0–4.2 V battery measurement. Use Value: ±5% VZ tolerance ensures <±2% full-scale error in battery SOC estimation without calibration. | Use Scenario: Protecting USB 3.0 data line receivers from transient overvoltage during hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance (135 pF) shunt clamp limiting VCC rail excursions to safe levels. Use Value: 15 Ω ZZT and 16 kV HBM rating suppress >100 V transients within nanoseconds while preserving signal integrity. |
| Automotive Infotainment Power Sequencing | Industrial Sensor Signal Conditioning |
Use Scenario: Generating clean 5 V auxiliary supply from 12 V vehicle battery for MCU reset logic in head unit modules. IC Role / Device Role / Timing Role: Zener-regulated shunt reference stabilizing LDO enable threshold against battery ripple. Use Value: AEC-Q101 qualification and −65 °C to +150 °C TJ range ensure reliable startup across cold cranking and engine bay heat soak. | Use Scenario: Biasing bridge-based pressure sensors in factory automation PLC input modules. IC Role / Device Role / Timing Role: Stable 8.2 V excitation source referenced to system ground for ratiometric ADC conversion. Use Value: +3.2 mV/°C tempco allows predictable offset correction in firmware, reducing calibration overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C8V2 | Same 8.2 V nominal, ±5% tolerance, but SOD-323 package (1.7 × 1.3 mm) - 43% larger footprint | Higher thermal resistance (RJA = 300 °C/W vs. 250 °C/W) limits power handling in sealed enclosures | Choose when legacy SOD-323 layout exists and board rework is prohibitive |
| MMSZ5231BT1G | 8.2 V nominal, ±5%, but SOD-123 package (3.7 × 1.6 mm) - 3.7× larger area than SOD-523 | Rated for 500 mW but higher ZZT (30 Ω) reduces regulation precision under dynamic loads | Prefer for high-reliability industrial use where mechanical robustness outweighs size constraints |
Compared with BZX584C8V2 and MMSZ5231BT1G, SZMM5Z8V2T1G offers the smallest PCB footprint and lowest thermal resistance among 8.2 V Zeners, making it optimal for next-generation portable and automotive modules where board area and thermal performance are co-critical.
Availability
SZMM5Z8V2T1G is available at Aetrix Electronics and suitable for battery management systems, USB interface protection, and automotive infotainment power sequencing requiring stable component supply and AEC-Q101 compliance.
Supply support for SZMM5Z8V2T1G 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.
SZMM5ZxxxT1G series targets space-constrained, high-reliability voltage regulation - engineered specifically for automotive-grade portable electronics and dense PCB environments where SOD-523 footprint and AEC-Q101 validation are mandatory.
FAQ
What is the Zener voltage tolerance of SZMM5Z8V2T1G at 5 mA test current?
SZMM5Z8V2T1G has a nominal Zener voltage of 8.2 V with a tolerance of ±5% at IZT = 5 mA, meaning the actual measured voltage falls between 7.7 V and 8.7 V under standard test conditions. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the onsemi datasheet (Rev. 19, April 2025).
Is SZMM5Z8V2T1G qualified for automotive applications?
Yes, SZMM5Z8V2T1G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the "Specification Features" section of the onsemi datasheet. The "SZ" prefix denotes automotive-grade screening, including extended temperature operation from −65 °C to +150 °C junction temperature.
What is the maximum steady-state power dissipation for SZMM5Z8V2T1G at 25 °C?
SZMM5Z8V2T1G has a maximum steady-state power dissipation of 500 mW at ambient temperature of 25 °C, with a linear derating factor of 4.0 mW/°C above that temperature. This value is specified in the "Maximum Ratings" table under PD and is validated on FR-4 board with 1 cm² copper pad.
Does SZMM5Z8V2T1G have ESD protection, and what level is rated?
SZMM5Z8V2T1G is rated for Class 3 ESD protection per Human Body Model (HBM) with >16 kV withstand capability. This is documented in the "Specification Features" section and verified through onsemi's qualification testing - critical for handling safety in automated assembly and end-use in portable electronics.
What is the Zener impedance of SZMM5Z8V2T1G at its test current?
The maximum Zener impedance (ZZT) of SZMM5Z8V2T1G is 15 Ω at IZT = 5 mA, as listed in the Electrical Characteristics table. This low dynamic impedance ensures tight voltage regulation under varying load conditions and is essential for precision reference applications.
SZMM5Z8V2T1G 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):
- 8.2 V
- Tolerance:
- ±6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 700 nA @ 5 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
SZMM5Z8V2T1G FAQ
1.How can I place an order for SZMM5Z8V2T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z8V2T1G 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 SZMM5Z8V2T1G reliable?
The price and inventory of SZMM5Z8V2T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z8V2T1G is usually 5 days.
3.What payment methods are accepted for SZMM5Z8V2T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z8V2T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z8V2T1G?
SZMM5Z8V2T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z8V2T1G 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 SZMM5Z8V2T1G?
For technical support, including SZMM5Z8V2T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z8V2T1G requirements.
6.How does Aetrix verify that SZMM5Z8V2T1G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z8V2T1G 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 SZMM5Z8V2T1G meets industry standards.
7.What is the process for return or replacement of SZMM5Z8V2T1G?
All SZMM5Z8V2T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z8V2T1G, 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 SZMM5Z8V2T1G part is unused and in its original packaging.
Return procedure for SZMM5Z8V2T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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