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onsemi SZMM5Z8V2T5G
- Part No.:
- SZMM5Z8V2T5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z8V2T5G.pdf
- Description:
- DIODE ZENER 8.2V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
SZMM5Z8V2T5G from onsemi is a 500 mW, 8.2 V Zener voltage regulator diode in SOD-523 package, with ±5% tolerance (7.7–8.7 V), 15 Ω dynamic impedance at 5 mA test current, and 0.7 µA leakage at 6.2 V reverse bias. It provides precision low-power voltage reference and overvoltage clamping in space-constrained portable electronics.
For engineers reviewing the SZMM5Z8V2T5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, thermal derating behavior, ESD robustness (>16 kV HBM), and SOD-523 footprint compatibility for high-density PCB layouts.
Technical Context
This device operates as a two-terminal, silicon planar Zener diode optimized for stable reverse-bias voltage regulation at low currents (IZT = 5 mA). Its 15 Ω Zener impedance at IZT ensures minimal output voltage variation under load transients.
The SOD-523 package enables surface-mount integration with 1.20 mm × 0.80 mm footprint and 0.7 mm height, while AEC-Q101 qualification confirms suitability for automotive-grade stress environments including temperature cycling and humidity exposure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V nominal, 7.7–8.7 V min/max at IZT = 5 mA - defines regulated clamp/reference level |
| Power Dissipation | 500 mW at TA = 25 °C, derates 4.0 mW/°C above - sets max ambient operating temperature for full power |
| Zener Impedance (ZZT) | 15 Ω max at IZT = 5 mA - determines AC ripple rejection and regulation stiffness |
| Leakage Current (IR) | 0.7 µA max at VR = 6.2 V - ensures minimal standby power loss in bias networks |
| ESD Rating | Class 3 (>16 kV) per HBM - protects against handling-induced electrostatic discharge in assembly |
| Temperature Coefficient | +3.2 mV/°C - quantifies VZ drift over temperature for stability-critical references |
| Capacitance | 135 pF max at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering capability |
Pinout & Package
SOD-523 surface-mount package: 1.20 mm × 0.80 mm body, 0.7 mm height, matte tin lead finish, MSL 1 rated, compatible with 260 °C reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; polarity band identifies cathode for correct orientation during placement |
| 2 | Anode | Connected to ground or lower-potential rail; completes reverse-bias path for Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including temperature cycling, mechanical shock, and humidity testing |
| Pb-Free & RoHS Compliant | Meets EU RoHS Directive 2011/65/EU and onsemi's Pb-free soldering standards |
| Low Profile SOD-523 | 0.7 mm height enables stacking under shields or use in ultra-thin handheld PCBs |
| High ESD Robustness | 16 kV HBM rating reduces risk of field failure in consumer portables with exposed interfaces |
| Stable Low-Current Regulation | Maintains 8.2 V reference within ±5% at IZ ≥ 1 mA - suitable for micropower sensor biasing |
Applications
| Smartphone Power Rail Protection | USB Interface ESD Clamp |
|---|---|
Use Scenario: Clamping transient surges on 5 V USB VBUS line during hot-plug events. IC Role / Device Role / Timing Role: Two-terminal shunt protector placed between VBUS and GND. Use Value: Limits peak voltage to ≤8.7 V using 15 Ω ZZT, preventing damage to downstream USB PHY ICs rated for 6 V absolute max. |
Use Scenario: Protecting USB data lines (D+/D−) from ESD strikes in portable accessories. IC Role / Device Role / Timing Role: Low-capacitance (135 pF) bidirectional clamp referenced to local ground. Use Value: Provides >16 kV HBM protection without degrading 480 Mbps USB 2.0 signal integrity due to compact SOD-523 layout. |
| IoT Sensor Bias Reference | Automotive Cabin Controller Voltage Monitor |
Use Scenario: Generating stable 8.2 V bias for analog front-end op-amps in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Precision Zener reference sourcing <1 mA quiescent current. Use Value: Delivers ±5% regulation across −40 to +85 °C with +3.2 mV/°C TC - sufficient for 12-bit ADC reference accuracy. |
Use Scenario: Monitoring 12 V battery rail health in infotainment control modules. IC Role / Device Role / Timing Role: Overvoltage detection element feeding comparator input via resistive divider. Use Value: AEC-Q101 qualification ensures reliable operation under automotive thermal cycling (−40 to +125 °C junction), supporting ASIL-B system 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 |
|---|---|---|---|
| BZX584-C8V2 | Same 8.2 V nominal, ±5% tolerance, but SOD-323 package (1.7 × 1.3 mm); 200 mW power rating | Larger footprint and lower power limit restrict use in ultra-dense layouts or >250 mW clamp scenarios | Select when SOD-323 is already standardized in design and 200 mW suffices |
| MMSZ5231BT1G | 8.2 V nominal, ±5%, but SOD-123 package (3.7 × 1.6 mm); 500 mW rating; 30 Ω ZZT | Higher Zener impedance reduces regulation precision; larger size limits high-density use | Choose for legacy SOD-123 footprints where board rework is prohibitive |
Compared with BZX584-C8V2 and MMSZ5231BT1G, SZMM5Z8V2T5G offers the smallest footprint (SOD-523), lowest ZZT (15 Ω), and highest ESD rating (16 kV HBM), making it optimal for next-generation portable and automotive modules requiring miniaturization and robustness.
Availability
SZMM5Z8V2T5G is available at Aetrix Electronics and suitable for smartphone power rail protection, USB interface ESD clamping, and IoT sensor bias reference requiring stable component supply across high-mix production runs.
Supply support for SZMM5Z8V2T5G 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering silicon-based solutions for automotive, industrial, cloud, and intelligent edge applications.
SZMM5Z8V2T5G belongs to the MM5Z/SZMM5Z series of miniature Zener regulators 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 SZMM5Z8V2T5G?
The SZMM5Z8V2T5G has a standard tolerance of ±5%, with a specified Zener voltage range of 7.7 V to 8.7 V at IZT = 5 mA and TA = 25 °C. This tolerance remains valid across its qualified operating temperature range and supports stable reference generation in consumer and automotive applications.
Is SZMM5Z8V2T5G suitable for automotive applications?
Yes, SZMM5Z8V2T5G is AEC-Q101 qualified and PPAP capable, with validated performance across −40 °C to +150 °C junction temperature. Its SOD-523 package, 16 kV HBM ESD rating, and Pb-free construction meet automotive reliability and compliance requirements for cabin controllers and body electronics.
What is the maximum power dissipation for SZMM5Z8V2T5G on a standard FR-4 board?
SZMM5Z8V2T5G delivers 500 mW steady-state power dissipation at TA = 25 °C on an FR-4 board with a 1 cm² copper pad. Power must be linearly derated by 4.0 mW/°C above 25 °C, reaching zero dissipation at approximately 150 °C ambient under those conditions.
How is the polarity marked on SZMM5Z8V2T5G?
SZMM5Z8V2T5G uses Style 1 marking: a cathode band (dark stripe) on one end identifies Pin 1 as the cathode; Pin 2 is the anode. The device marking code "0H" appears adjacent to the band, and a date code "M" follows per onsemi's SOD-523 marking diagram.
What is the Zener impedance of SZMM5Z8V2T5G and why does it matter?
SZMM5Z8V2T5G has a maximum Zener impedance (ZZT) of 15 Ω at IZT = 5 mA. This low value ensures tight voltage regulation under varying load currents - critical for maintaining reference accuracy in analog circuits and minimizing overshoot during transient clamping events.
SZMM5Z8V2T5G 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:
- ±6.1%
- 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 (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
SZMM5Z8V2T5G FAQ
1.How can I place an order for SZMM5Z8V2T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z8V2T5G 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 SZMM5Z8V2T5G reliable?
The price and inventory of SZMM5Z8V2T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z8V2T5G is usually 5 days.
3.What payment methods are accepted for SZMM5Z8V2T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z8V2T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z8V2T5G?
SZMM5Z8V2T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z8V2T5G 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 SZMM5Z8V2T5G?
For technical support, including SZMM5Z8V2T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z8V2T5G requirements.
6.How does Aetrix verify that SZMM5Z8V2T5G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z8V2T5G 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 SZMM5Z8V2T5G meets industry standards.
7.What is the process for return or replacement of SZMM5Z8V2T5G?
All SZMM5Z8V2T5G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z8V2T5G, 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 SZMM5Z8V2T5G part is unused and in its original packaging.
Return procedure for SZMM5Z8V2T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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