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onsemi MMSZ4695T1G
- Part No.:
- MMSZ4695T1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
MMSZ4695T1G.pdf
- Description:
- DIODE ZENER 8.7V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:8,559
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Product details
Overview
MMSZ4695T1G from onsemi is a 500 mW, 8.7 V nominal Zener voltage regulator diode in SOD−123 surface-mount package, designed for precision voltage reference and overvoltage protection in low-power analog and digital circuits. It delivers ±5% Zener voltage tolerance (8.27–9.14 V), 50 µA test current (IZT), 1 µA reverse leakage at 6.6 V (IR), and operates across −55°C to +150°C junction temperature range.
For engineers reviewing the MMSZ4695T1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy, low IZT stability, thermal derating behavior, SOD−123 board assembly compatibility, and AEC−Q101 qualification status for automotive-grade reliability validation.
Technical Context
The MMSZ4695T1G functions as a two-terminal, silicon planar Zener diode operating in reverse breakdown mode. Its 8.7 V nominal Zener voltage is specified at 50 µA test current (IZT) with a dynamic impedance (ZZT) of ≤20 Ω at 1 mA, enabling stable regulation under light-load conditions.
Thermal performance is defined by 340°C/W junction-to-ambient thermal resistance (RJA) and 150°C/W junction-to-lead (RJL), supporting operation up to +150°C junction temperature. The device exhibits a positive temperature coefficient near 8.7 V, consistent with typical Zener voltage vs. temperature curves for this voltage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.27–9.14 V @ IZT = 50 µA - defines tight regulation window for reference stability |
| Power Dissipation (PD) | 500 mW @ TL = 75°C - sets maximum continuous power handling on FR-5 PCB |
| Reverse Leakage (IR) | ≤1 µA @ VR = 6.6 V - ensures minimal quiescent current in standby protection circuits |
| Dynamic Impedance (ZZT) | ≤20 Ω @ IZ = 1 mA - maintains low output impedance for ripple rejection |
| Operating Temperature | −55°C to +150°C - supports automotive under-hood and industrial control environments |
| ESD Rating | Class 3 (>16 kV HBM) - enables robust handling during automated SMT assembly |
Pinout & Package
SOD−123 plastic surface-mount package (1.60 × 2.69 × 1.16 mm), void-free thermosetting case with cathode polarity band marking and UL 94 V−0 flammability rating. Maximum soldering temperature: 260°C for 10 seconds.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated voltage node; polarity band identifies this terminal for correct orientation |
| 2 (Anode) | Reference ground return | Typically tied to system ground or lower-potential rail; completes reverse-bias path |
Key Features
| Feature | Design Value |
|---|---|
| Low IZT test current | 50 µA enables stable Zener voltage measurement without significant loading in ultra-low-power systems |
| Pb−Free & RoHS compliant | Meets global environmental compliance requirements for commercial and automotive electronics |
| AEC−Q101 qualified | Validated for automotive applications including body electronics and infotainment power rails |
| High ESD immunity | Class 3 (>16 kV HBM) reduces risk of electrostatic damage during board assembly and handling |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Voltage clamping for LIN bus transceiver supply rail against load dump transients. IC Role / Device Role / Timing Role: Zener voltage clamp protecting 5 V/3.3 V LDO input stage from overvoltage events. Use Value: 8.7 V Zener threshold ensures safe margin below 12 V nominal battery rail while maintaining fast response to >14 V surges. |
Use Scenario: Precision reference for 12-bit ADC in temperature sensor front-end. IC Role / Device Role / Timing Role: Stable 8.7 V reference source for ratiometric scaling of analog sensor outputs. Use Value: ±5% VZ tolerance and low ZZT support <0.1% full-scale error contribution in calibrated measurement chains. |
| Consumer Power Adapter Feedback | Medical Diagnostic Equipment Biasing |
Use Scenario: Secondary-side voltage sensing in isolated flyback converters for USB-C PD adapters. IC Role / Device Role / Timing Role: Zener-based feedback node for optocoupler-driven regulation loop. Use Value: Low IR (≤1 µA) minimizes bias current error in high-impedance feedback dividers, improving load regulation. |
Use Scenario: Overvoltage protection for analog front-end amplifiers in portable ECG monitors. IC Role / Device Role / Timing Role: Clamp diode safeguarding op-amp inputs from ESD and transient coupling. Use Value: Class 3 HBM rating and −55°C to +150°C operation ensure reliability in clinical-grade portable devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C8V2LT1G | 8.2 V nominal, ±5% tolerance, SOT-23 package, 350 mW PD | Lower power rating and different footprint require PCB redesign | Preferred where space-constrained layouts favor SOT-23 and 8.2 V regulation suffices |
| MMSZ5236BT1G | 8.2 V nominal, ±5% tolerance, SOD-123 package, 500 mW PD, higher IZT (20 mA) | Higher test current shifts regulation point; less suitable for micro-power biasing | Appropriate when higher Zener current improves noise immunity in noisy industrial environments |
Compared with MMSZ4695T1G, BZX84-C8V2LT1G offers smaller size but reduced power handling, while MMSZ5236BT1G matches the SOD-123 form factor but requires higher bias current-making MMSZ4695T1G optimal for low-IQ, automotive-qualified 8.7 V reference needs.
Availability
MMSZ4695T1G is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor signal conditioning, and consumer power adapter feedback requiring stable component supply, AEC−Q101 compliance, and Pb−Free manufacturing readiness.
Supply support for MMSZ4695T1G 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The MMSZ4xxxT1G series was developed to provide AEC−Q101-qualified, low-power Zener regulators in compact SOD−123 packaging for automotive and industrial voltage reference and protection functions.
FAQ
What is the nominal Zener voltage of the MMSZ4695T1G and its tolerance range?
The MMSZ4695T1G has a nominal Zener voltage of 8.7 V with a guaranteed tolerance range of 8.27 V to 9.14 V at IZT = 50 µA and TA = 25°C. This ±5% specification ensures predictable regulation performance in precision reference and clamping applications where voltage accuracy directly impacts system-level calibration and safety margins.
Is the MMSZ4695T1G suitable for automotive applications?
Yes, the MMSZ4695T1G is AEC−Q101 qualified and PPAP capable, making it suitable for automotive applications such as body control modules, lighting drivers, and infotainment power supplies. Its −55°C to +150°C operating temperature range, Class 3 ESD rating, and Pb−Free construction meet stringent automotive reliability and compliance requirements.
What is the maximum power dissipation for the MMSZ4695T1G and how does it derate with temperature?
The MMSZ4695T1G is rated for 500 mW total power dissipation on FR-5 board at TL = 75°C, derating linearly at 6.7 mW/°C above that temperature. This derating curve ensures safe operation up to +150°C junction temperature when thermal design accounts for RJA = 340°C/W and board layout follows onsemi's recommended footprint.
How does the MMSZ4695T1G compare to standard Zener diodes in terms of leakage current?
The MMSZ4695T1G specifies ≤1 µA reverse leakage current (IR) at VR = 6.6 V, significantly lower than many legacy Zeners at comparable voltages. This low IR minimizes parasitic current draw in battery-powered and high-impedance bias networks, preserving accuracy in sensor references and extending operational life in always-on subsystems.
What package type and dimensions does the MMSZ4695T1G use?
The MMSZ4695T1G uses the SOD−123 surface-mount package (Case 425), measuring 1.60 mm × 2.69 mm × 1.16 mm. Its compact size supports high-density PCB layouts, and the cathode polarity band provides unambiguous orientation for automated placement-critical for reliable SMT yield in high-volume manufacturing of the MMSZ4695T1G.
MMSZ4695T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 8.7 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 6.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
MMSZ4695T1G FAQ
1.How can I place an order for MMSZ4695T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ4695T1G 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 MMSZ4695T1G reliable?
The price and inventory of MMSZ4695T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ4695T1G is usually 5 days.
3.What payment methods are accepted for MMSZ4695T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ4695T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ4695T1G?
MMSZ4695T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ4695T1G 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 MMSZ4695T1G?
For technical support, including MMSZ4695T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ4695T1G requirements.
6.How does Aetrix verify that MMSZ4695T1G is sourced from the original manufacturer or authorized distributors?
All MMSZ4695T1G 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 MMSZ4695T1G meets industry standards.
7.What is the process for return or replacement of MMSZ4695T1G?
All MMSZ4695T1G units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ4695T1G, 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 MMSZ4695T1G part is unused and in its original packaging.
Return procedure for MMSZ4695T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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