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onsemi MM5Z8V2ST1G
- Part No.:
- MM5Z8V2ST1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
MM5Z8V2ST1G.pdf
- Description:
- DIODE ZENER 8.2V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,274
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Product details
Overview
MM5Z8V2ST1G from onsemi is a 500 mW, ±5% tolerance Zener diode in SOD-523 package, with nominal Zener voltage 8.2 V (min 8.02 V, max 8.36 V) at 5 mA test current, 15 Ω dynamic impedance at IZT, and 0.7 µA reverse leakage at 6.5 V. It delivers precision voltage regulation for low-power biasing and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the MM5Z8V2ST1G datasheet, pinout, applications, or equivalent options, key selection criteria include its tight 5% VZ tolerance, 135 pF capacitance at 0 V, 3.2 mV/°C temperature coefficient, Class 3 ESD rating (>16 kV HBM), and SOD-523 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener regulator operates in reverse breakdown to maintain stable reference voltage under varying load and temperature conditions. Its 500 mW power rating and 250 °C/W junction-to-ambient thermal resistance define safe operating limits on FR-4 boards with 1 cm² copper pad.
The device features low 15 Ω Zener impedance at 5 mA, 0.7 µA leakage at VR = 6.5 V, and a positive temperature coefficient of +3.2 mV/°C - enabling predictable drift compensation in analog reference circuits and voltage-clamp designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.02 V to 8.36 V at IZT = 5 mA - ensures ±5% regulation accuracy for 8.2 V nominal references |
| Power Dissipation (PD) | 500 mW at TA = 25 °C - supports continuous operation in compact handheld PCBs with derating above 25 °C |
| Zener Impedance (ZZT) | 15 Ω max at IZT = 5 mA - maintains low AC impedance for stable noise suppression in feedback paths |
| Reverse Leakage (IR) | 0.7 µA max at VR = 6.5 V - minimizes standby current in battery-powered voltage monitor circuits |
| Capacitance (C) | 135 pF max at VR = 0 V, f = 1 MHz - limits high-frequency coupling in RF-adjacent bias networks |
| ESD Rating | Class 3 (>16 kV HBM) - provides robust handling during automated assembly and field operation |
| Package | SOD-523 (1.20 mm × 0.80 mm × 0.70 mm) - enables placement in <1.0 mm pitch layouts for ultra-thin mobile modules |
Pinout & Package
SOD-523 surface-mount package with cathode marked by polarity band; body dimensions 1.20 mm × 0.80 mm × 0.70 mm; lead finish 100% matte tin; MSL 1 rated for 260 °C reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Tight 5% VZ tolerance | Enables single-supply voltage reference design without post-calibration trimming |
| 135 pF capacitance at 0 V | Minimizes signal distortion in high-speed comparator input clamping applications |
| +3.2 mV/°C tempco | Allows predictable offset correction when paired with negative-tempco components |
| 500 mW power rating | Supports transient surge absorption up to 100 ms in USB port protection circuits |
| Pb-free, RoHS-compliant | Meets IPC-J-STD-020 moisture sensitivity level 1 requirements for lead-free reflow |
Applications
| Smartphone Power Management | Wearable Sensor Biasing |
|---|---|
Use Scenario: Regulating reference voltage for PMIC ADC monitoring channels in LTE/5G handsets. IC Role / Device Role / Timing Role: Precision shunt voltage reference providing stable 8.2 V for internal rail sensing. Use Value: ±5% VZ tolerance eliminates need for external calibration, reducing BOM count in volume production. | Use Scenario: Clamping supply rail transients on MEMS accelerometer analog front-end. IC Role / Device Role / Timing Role: Overvoltage protector limiting sensor VDD to 8.36 V during ESD events. Use Value: 16 kV HBM ESD rating prevents latch-up in sub-1 mm² wearable PCBs with minimal layout area. |
| USB-C Port Protection | IoT Node Voltage Monitoring |
Use Scenario: Suppressing voltage spikes on VBUS line during hot-plug insertion in portable chargers. IC Role / Device Role / Timing Role: Fast-response shunt clamp absorbing 500 mW surges for ≤100 ms. Use Value: 500 mW steady-state rating and 250 °C/W RJA enable reliable operation without heatsinking. | Use Scenario: Providing stable 8.2 V reference for battery voltage divider in BLE beacon firmware. IC Role / Device Role / Timing Role: Low-leakage (0.7 µA) Zener reference minimizing quiescent current drain. Use Value: Sub-microamp leakage extends coin-cell battery life beyond 2 years in always-on monitoring mode. |
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); 200 mW rating | Larger footprint and lower power limit restrict use in ultra-dense layouts requiring >300 mW dissipation | Select MM5Z8V2ST1G when board space <1.0 mm² per device and power >300 mW is needed |
| MMSZ5238BT1G | 8.2 V nominal, ±5%, SOD-123 package (3.7 × 1.6 mm); 500 mW rating but 300 Ω ZZT | Higher 300 Ω impedance degrades regulation stability in fast-transient load scenarios | Choose MM5Z8V2ST1G for low-impedance (<20 Ω) reference needs in analog feedback loops |
Compared with BZX584C8V2 and MMSZ5238BT1G, MM5Z8V2ST1G uniquely combines SOD-523 miniaturization, 500 mW capability, and 15 Ω ZZT - making it optimal for space-constrained, high-stability voltage reference designs where both size and regulation fidelity are critical.
Availability
MM5Z8V2ST1G is available at Aetrix Electronics and suitable for smartphone power management, wearable sensor biasing, and USB-C port protection requiring stable component supply across high-volume consumer electronics programs.
Supply support for MM5Z8V2ST1G 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 MM5ZxxxST1G series targets compact, high-reliability voltage regulation in portable electronics - designed specifically for space-constrained, battery-operated devices needing tight-tolerance, low-capacitance Zener references.
FAQ
What is the Zener voltage tolerance of MM5Z8V2ST1G?
The MM5Z8V2ST1G has a ±5% Zener voltage tolerance, specified as 8.02 V minimum and 8.36 V maximum at 5 mA test current. This tight tolerance enables accurate voltage referencing without post-production calibration in portable electronics designs where board space precludes trimming components.
What is the maximum power dissipation for MM5Z8V2ST1G at 70°C ambient?
At 70°C ambient, MM5Z8V2ST1G's maximum power dissipation is 320 mW, calculated using its 4.0 mW/°C derating factor from the 500 mW rating at 25°C. This value assumes mounting on an FR-4 board with a 1 cm² copper pad, as defined in the onsemi datasheet's Note 1.
Does MM5Z8V2ST1G meet automotive qualification standards?
MM5Z8V2ST1G is not AEC-Q101 qualified; only the SZMM5Z8V2ST1G variant carries that qualification. The MM5Z8V2ST1G is intended for commercial and industrial applications, including smartphones and wearables, where automotive-grade reliability is not required.
What is the reverse leakage current specification for MM5Z8V2ST1G?
The MM5Z8V2ST1G specifies a maximum reverse leakage current of 0.7 µA at VR = 6.5 V and TA = 25°C. This low leakage supports extended battery life in always-on IoT nodes, where quiescent current minimization directly impacts operational longevity.
How is the cathode identified on the MM5Z8V2ST1G SOD-523 package?
The cathode of MM5Z8V2ST1G is identified by a polarity band (dark marking) at Pin 1 of the SOD-523 package. Per the onsemi mechanical drawing, this banded end must be oriented toward the higher-potential node in reverse-bias configuration to enable proper Zener breakdown operation.
MM5Z8V2ST1G 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:
- ±2%
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
MM5Z8V2ST1G FAQ
1.How can I place an order for MM5Z8V2ST1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z8V2ST1G 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 MM5Z8V2ST1G reliable?
The price and inventory of MM5Z8V2ST1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z8V2ST1G is usually 5 days.
3.What payment methods are accepted for MM5Z8V2ST1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z8V2ST1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z8V2ST1G?
MM5Z8V2ST1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z8V2ST1G 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 MM5Z8V2ST1G?
For technical support, including MM5Z8V2ST1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z8V2ST1G requirements.
6.How does Aetrix verify that MM5Z8V2ST1G is sourced from the original manufacturer or authorized distributors?
All MM5Z8V2ST1G 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 MM5Z8V2ST1G meets industry standards.
7.What is the process for return or replacement of MM5Z8V2ST1G?
All MM5Z8V2ST1G units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z8V2ST1G, 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 MM5Z8V2ST1G part is unused and in its original packaging.
Return procedure for MM5Z8V2ST1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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