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onsemi MM5Z7V5ST1G
- Part No.:
- MM5Z7V5ST1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
MM5Z7V5ST1G.pdf
- Description:
- DIODE ZENER 7.5V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:3,105
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Product details
Overview
MM5Z7V5ST1G from onsemi is a 7.5 V ±3.8% tolerance Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 140 pF capacitance at 0 V and 1 MHz, 15 Ω maximum Zener impedance at 5 mA test current, and Class 3 ESD rating (>16 kV HBM). It provides precision voltage regulation in space-constrained portable electronics.
For engineers reviewing the MM5Z7V5ST1G datasheet, pinout, applications, or equivalent options, key selection criteria include its tight 7.28–7.60 V Zener voltage range at 5 mA, low 15 Ω dynamic impedance, 140 pF junction capacitance, −65 to +150 °C operating temperature range, and Pb-free, RoHS-compliant SOD-523 footprint.
Technical Context
This device operates as a two-terminal voltage reference and overvoltage clamp, leveraging avalanche breakdown in silicon PN junction. Its 5 mA test current and 15 Ω Zener impedance at IZT ensure stable regulation under moderate load transients.
The SOD-523 package enables high-density PCB layouts with minimal thermal mass; its 250 °C/W junction-to-ambient thermal resistance requires careful layout for sustained 500 mW operation, especially above 25 °C ambient where derating is 4.0 mW/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.28 V to 7.60 V at 5 mA - defines precise clamping threshold for protection or reference circuits |
| Power Dissipation (PD) | 500 mW at 25 °C - sets maximum continuous power handling on FR-4 board |
| Zener Impedance (ZZT) | 15 Ω max at 5 mA - ensures low AC impedance for stable regulation under varying load |
| Junction Capacitance (C) | 140 pF max at 0 V, 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent designs |
| ESD Rating | Class 3 (>16 kV HBM) - provides robust handling during assembly and end-use in handheld devices |
| Operating Temperature | −65 °C to +150 °C - supports automotive under-hood and industrial environments |
Pinout & Package
SOD-523 surface-mount package: 1.20 mm × 0.80 mm body, 0.70 mm height, matte tin lead finish, MSL 1, qualified for 260 °C reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output or higher-potential node; polarity band identifies cathode for correct orientation |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential reference; reverse bias applied across anode-to-cathode for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener voltage tolerance | ±3.8% (7.28–7.60 V) - reduces need for post-regulation trimming in precision references |
| Low dynamic impedance | 15 Ω max at 5 mA - minimizes output voltage variation under load current changes |
| High ESD robustness | Class 3 (>16 kV HBM) - eliminates need for external ESD protection in consumer portables |
| Pb-free & RoHS compliant | 100% matte Sn finish - meets global environmental compliance without solderability trade-offs |
Applications
| Smartphone Power Rail Protection | USB-C Port ESD Clamp |
|---|---|
Use Scenario: Clamping transient surges on 5 V USB power input rails in compact smartphone mainboards. IC Role / Device Role / Timing Role: Two-terminal shunt regulator acting as primary overvoltage clamp before DC-DC converters. Use Value: 140 pF capacitance avoids signal integrity degradation on high-speed USB lines while providing 7.5 V clamping threshold aligned with system rail margins. | Use Scenario: Protecting CC and VCONN pins in USB-C receptacles against electrostatic discharge events. IC Role / Device Role / Timing Role: Standalone ESD suppressor placed directly at connector interface. Use Value: Class 3 HBM rating (>16 kV) and SOD-523 footprint enable direct placement at ultra-compact USB-C connectors without board area penalty. |
| Wearable Sensor Reference | Industrial IoT Node Voltage Monitor |
Use Scenario: Providing stable 7.5 V reference for analog front-end calibration in hearable devices. IC Role / Device Role / Timing Role: Precision Zener reference source for ADC biasing and sensor excitation. Use Value: Tight 7.28–7.60 V tolerance and low 15 Ω ZZT ensure <±0.5% reference drift across temperature and load variations. | Use Scenario: Monitoring 12 V supply health in battery-powered edge gateways operating across −40 to +85 °C. IC Role / Device Role / Timing Role: Overvoltage detection element feeding comparator input via resistive divider. Use Value: −65 to +150 °C operating range and 5.0 mW minimum test current support reliable threshold detection even in thermally stressed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C7V5 | 7.5 V ±5%, 300 mW rating, SOD-323 package (1.7 × 1.3 mm) | Larger footprint; lower power rating limits use in sustained clamp scenarios | Select when board space allows larger package and 300 mW suffices |
| MMSZ5236BT1G | 7.5 V ±5%, 500 mW, SOD-123 package (3.7 × 1.6 mm) | 3× larger footprint; same power but less suitable for ultra-dense layouts | Select when thermal margin is critical and PCB real estate permits larger case |
Compared with BZX584C7V5 and MMSZ5236BT1G, MM5Z7V5ST1G offers tighter voltage tolerance and smallest footprint among 7.5 V Zeners, making it optimal for space-constrained, high-reliability portable designs where 500 mW dissipation and Class 3 ESD are required.
Availability
MM5Z7V5ST1G is available at Aetrix Electronics and suitable for smartphone power rail protection, USB-C port ESD clamp, and wearable sensor reference requiring stable component supply and consistent parametric performance across production lots.
Supply support for MM5Z7V5ST1G 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MM5ZxxxST1G series is designed for compact, high-reliability voltage regulation and ESD protection in portable and space-constrained electronic systems, emphasizing tight tolerance, low capacitance, and robust manufacturability.
FAQ
What is the exact Zener voltage range of MM5Z7V5ST1G at 5 mA test current?
The MM5Z7V5ST1G has a guaranteed Zener voltage range of 7.28 V to 7.60 V when tested at 5 mA (IZT), corresponding to ±3.8% tolerance around the nominal 7.5 V rating. This specification is validated per onsemi's Electrical Characteristics table and applies under standard 25 °C ambient conditions. The MM5Z7V5ST1G maintains this range across its full operating temperature span when used within derated power limits.
Is MM5Z7V5ST1G suitable for automotive applications?
MM5Z7V5ST1G itself is not AEC-Q101 qualified; however, the automotive-grade variant SZMM5Z7V5ST1G is explicitly AEC-Q101 qualified and PPAP capable. For non-automotive industrial or consumer applications, MM5Z7V5ST1G delivers identical electrical performance and reliability. Always verify qualification status using the full part number prefix when selecting for automotive use cases.
What is the maximum junction-to-ambient thermal resistance for MM5Z7V5ST1G?
The MM5Z7V5ST1G has a maximum junction-to-ambient thermal resistance (RJA) of 250 °C/W when mounted on a single-sided FR-4 PCB with a 1 cm² copper pad. This value assumes standard JEDEC test conditions and must be adjusted for actual board layout, copper area, and airflow. Derating begins above 25 °C ambient at 4.0 mW/°C, limiting usable power at elevated temperatures.
Does MM5Z7V5ST1G have a defined forward voltage specification?
Yes, the MM5Z7V5ST1G specifies a maximum forward voltage (VF) of 0.9 V at 10 mA forward current (IF), consistent across the entire MM5ZxxxST1G series. This parameter is relevant for polarity-check circuits or applications where the device may conduct in forward bias during fault conditions. The forward characteristic is verified per onsemi's Electrical Characteristics table on page 2 of the datasheet.
How is the cathode identified on the MM5Z7V5ST1G SOD-523 package?
The cathode of the MM5Z7V5ST1G is marked by a polarity band at Pin 1 - the banded end of the SOD-523 package. Per onsemi's mechanical drawing and marking diagram, Pin 1 is always the cathode and Pin 2 is the anode. This band is visible as a dark stripe or printed mark on the top surface and must align with the PCB silkscreen indicator during placement to ensure correct reverse-bias operation.
MM5Z7V5ST1G 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):
- 7.5 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 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
MM5Z7V5ST1G FAQ
1.How can I place an order for MM5Z7V5ST1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MM5Z7V5ST1G 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 MM5Z7V5ST1G reliable?
The price and inventory of MM5Z7V5ST1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MM5Z7V5ST1G is usually 5 days.
3.What payment methods are accepted for MM5Z7V5ST1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MM5Z7V5ST1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MM5Z7V5ST1G?
MM5Z7V5ST1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MM5Z7V5ST1G 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 MM5Z7V5ST1G?
For technical support, including MM5Z7V5ST1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MM5Z7V5ST1G requirements.
6.How does Aetrix verify that MM5Z7V5ST1G is sourced from the original manufacturer or authorized distributors?
All MM5Z7V5ST1G 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 MM5Z7V5ST1G meets industry standards.
7.What is the process for return or replacement of MM5Z7V5ST1G?
All MM5Z7V5ST1G units undergo pre-shipment inspection (PSI). If there is an issue with MM5Z7V5ST1G, 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 MM5Z7V5ST1G part is unused and in its original packaging.
Return procedure for MM5Z7V5ST1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MM5Z7V5ST1G Tags
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