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onsemi MM5Z6V8ST1
- Part No.:
- MM5Z6V8ST1
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
MM5Z6V8ST1.pdf
- Description:
- DIODE ZENER 6.8V 200MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:8,998
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Product details
Overview
MM5Z6V8ST1 from onsemi is a 200 mW, 6.65–6.93 V Zener diode in SOD−523 package, designed for precision voltage regulation and overvoltage protection in space-constrained circuits. It delivers 15 Ω max Zener impedance at 5 mA test current, −40 °C to +125 °C operating range, and 16 kV ESD rating (HBM), used in smartphone power rail clamping and portable device reference stabilization.
For engineers reviewing the MM5Z6V8ST1 datasheet, pinout, applications, or equivalent options, key selection criteria include its tight 5% Zener tolerance, low 155 pF capacitance at 0 V, 4.0 μA max leakage at 5.4 V, thermal resistance of 635 °C/W, and Pb-free SOD−523 footprint compatibility with high-density PCB assembly.
Technical Context
The MM5Z6V8ST1 operates as a two-terminal voltage reference device, maintaining stable reverse breakdown across 5 mA nominal test current with ±0.14 V tolerance (6.65–6.93 V). Its 160 Ω max dynamic impedance at IZK = 1 mA ensures predictable knee behavior during transient suppression.
Designed for surface-mount use on FR-4 boards, it features 1.20 mm × 0.80 mm body, 0.7 mm height, and MSL 1 reflow rating up to 260 °C. The device exhibits a positive temperature coefficient of +1.2 mV/°C at 5 mA, enabling predictable drift compensation in bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.65–6.93 V at 5 mA - defines clamping threshold for 5.4 V–6.2 V supply rails |
| Zener Impedance (ZZT) | 160 Ω max at IZT = 5 mA - limits voltage deviation under load transients |
| Power Dissipation (PD) | 200 mW @ 25 °C - supports continuous regulation in low-power sensor interfaces |
| Reverse Leakage (IR) | 4.0 μA max @ VR = 5.4 V - ensures minimal quiescent current in battery-backed circuits |
| Capacitance (C) | 155 pF max @ VR = 0 V, f = 1 MHz - avoids signal integrity degradation in RF-adjacent layouts |
| ESD Rating | Class 3 (>16 kV HBM) - enables direct integration into handheld ESD-prone interfaces without external protection |
| Package | SOD−523 (Case 502) - 1.20 mm × 0.80 mm × 0.70 mm footprint for ultra-dense portable PCBs |
Pinout & Package
SOD−523 package: 2-terminal surface-mount device with cathode marked by band (Pin 1) and anode (Pin 2); body dimensions 1.20 mm × 0.80 mm × 0.70 mm; matte tin lead finish; RoHS-compliant and Pb-free.
| 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 conduction path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener tolerance | ±0.14 V (5%) at 5 mA - enables accurate voltage referencing without post-calibration |
| Low-profile packaging | 0.7 mm height - allows placement beneath connectors or stacked components in slim mobile designs |
| High ESD robustness | 16 kV HBM - eliminates need for discrete TVS in USB, SIM, or audio jack protection circuits |
| Thermal stability | +1.2 mV/°C tempco - supports predictable biasing in automotive cabin modules operating from −40 °C to +125 °C |
| Pb-free compliance | 100% matte Sn finish - meets IPC-J-STD-020 MSL 1 reflow requirements without lead contamination risk |
Applications
| Smartphone Power Rail Clamping | USB Interface ESD Protection |
|---|---|
Use Scenario: Clamping 5 V USB VBUS line against surge events in compact smartphone charging circuits. IC Role / Device Role / Timing Role: Two-terminal shunt regulator absorbing transient energy above 6.65 V while limiting voltage excursion. Use Value: 155 pF capacitance avoids signal jitter on USB 2.0 D+/D− lines; 16 kV HBM rating handles repeated hot-plug ESD stress. | Use Scenario: Protecting USB data lines (D+, D−) from contact discharge in portable accessories. IC Role / Device Role / Timing Role: Low-capacitance Zener clamp placed between data line and ground to divert ESD current. Use Value: 4.0 μA leakage preserves bus idle state; 160 Ω ZZK ensures fast response below USB eye-diagram timing margins. |
| Portable Sensor Reference Bias | IoT Node Battery Monitoring |
Use Scenario: Providing stable 6.8 V reference for ADC input scaling in wearable health sensors. IC Role / Device Role / Timing Role: Precision voltage source establishing known full-scale input for analog front-end conditioning. Use Value: ±0.14 V tolerance maintains <0.5% measurement error; 200 mW rating supports continuous operation from coin-cell sources. | Use Scenario: Monitoring lithium-ion cell voltage in Bluetooth LE trackers using resistive divider feedback. IC Role / Device Role / Timing Role: Overvoltage limiter preventing MCU ADC damage during charger insertion transients. Use Value: 1.20 mm × 0.80 mm footprint fits within 2 mm² board area budget; Pb-free finish ensures solder joint reliability in reflow cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C6V8 | Same 6.8 V nominal, but 350 mW rating and SOD-323 package (1.7 mm × 1.3 mm) | Higher power handling suits industrial 24 V systems; larger footprint incompatible with ultra-thin mobile PCBs | Select when >200 mW dissipation or higher surge immunity is required; verify layout clearance for larger body |
| MMSZ4687T1G | 6.8 V nominal, 500 mW rating, SOD-123 package (3.7 mm × 1.6 mm), 200 Ω ZZT | Designed for general-purpose board-level protection; lacks Class 3 ESD rating and tight 5% tolerance | Prefer for cost-sensitive industrial controls where ESD robustness and precision are secondary to power margin |
Compared with BZX584C6V8 and MMSZ4687T1G, the MM5Z6V8ST1 offers superior space efficiency and ESD resilience for consumer portables, while trading off absolute power headroom-making it optimal for battery-powered devices where board area and human-touch reliability are critical.
Availability
MM5Z6V8ST1 is available at Aetrix Electronics and suitable for smartphone power management, USB interface protection, and portable sensor reference applications requiring stable component supply and consistent Zener voltage performance across production batches.
Supply support for MM5Z6V8ST1 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 solutions for automotive, industrial, cloud, and IoT markets.
The MM5Z series targets miniaturized voltage regulation in portable electronics, emphasizing ultra-small footprint, high ESD immunity, and tight parametric control for next-generation handheld and wearables design.
FAQ
What is the Zener voltage tolerance of MM5Z6V8ST1?
The MM5Z6V8ST1 has a specified Zener voltage range of 6.65 V to 6.93 V at 5 mA test current, representing a ±5% tolerance around the nominal 6.8 V rating. This tight tolerance ensures reliable clamping behavior in precision reference and protection circuits without requiring binning or calibration. The MM5Z6V8ST1 achieves this via process-controlled doping and laser trimming during manufacturing.
Does MM5Z6V8ST1 support lead-free reflow soldering?
Yes, the MM5Z6V8ST1 uses 100% matte tin lead finish and is qualified for MSL 1 handling with peak reflow temperatures up to 260 °C. Its SOD−523 package meets IPC-J-STD-020 requirements for Pb-free assembly, and the device is explicitly marked as Pb-free in onsemi's ordering nomenclature (no "G" suffix needed). The MM5Z6V8ST1 is fully compatible with standard lead-free reflow profiles.
What is the maximum reverse leakage current for MM5Z6V8ST1?
The MM5Z6V8ST1 specifies a maximum reverse leakage current (IR) of 4.0 μA at VR = 5.4 V and TA = 25 °C. This low leakage supports extended battery life in always-on portable devices. At elevated temperatures (e.g., 125 °C), leakage increases predictably per datasheet derating curves, remaining below 50 μA-still suitable for most low-power monitoring functions involving the MM5Z6V8ST1.
Can MM5Z6V8ST1 be used for ESD protection on high-speed data lines?
Yes, the MM5Z6V8ST1 is rated for Class 3 HBM ESD (>16 kV) and exhibits only 155 pF capacitance at 0 V, making it suitable for protecting low-speed to mid-speed digital interfaces like I²C, UART, and USB 2.0 data lines. Its fast Zener turn-on and low dynamic impedance ensure effective clamping without distorting signal edges. For USB 2.0, the MM5Z6V8ST1 is typically deployed in parallel with the data pair to ground.
How does the temperature coefficient affect MM5Z6V8ST1 performance?
MM5Z6V8ST1 has a temperature coefficient of +1.2 mV/°C at 5 mA, meaning its Zener voltage increases linearly with junction temperature. This positive drift is beneficial in bias networks where thermal tracking with other silicon components is desired. Over the −40 °C to +125 °C range, total VZ shift is approximately ±200 mV-within specification for most non-critical regulation tasks. Designers using MM5Z6V8ST1 in precision references should account for this slope in system-level calibration.
MM5Z6V8ST1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 6.8 V
- Tolerance:
- ±2%
- Power - Max:
- 200 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
MM5Z6V8ST1 FAQ
1.How can I place an order for MM5Z6V8ST1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z6V8ST1 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 MM5Z6V8ST1 reliable?
The price and inventory of MM5Z6V8ST1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z6V8ST1 is usually 5 days.
3.What payment methods are accepted for MM5Z6V8ST1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z6V8ST1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z6V8ST1?
MM5Z6V8ST1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z6V8ST1 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 MM5Z6V8ST1?
For technical support, including MM5Z6V8ST1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z6V8ST1 requirements.
6.How does Aetrix verify that MM5Z6V8ST1 is sourced from the original manufacturer or authorized distributors?
All MM5Z6V8ST1 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 MM5Z6V8ST1 meets industry standards.
7.What is the process for return or replacement of MM5Z6V8ST1?
All MM5Z6V8ST1 units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z6V8ST1, 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 MM5Z6V8ST1 part is unused and in its original packaging.
Return procedure for MM5Z6V8ST1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MM5Z6V8ST1 Tags
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