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onsemi SZMMSZ4693T1G
- Part No.:
- SZMMSZ4693T1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
SZMMSZ4693T1G.pdf
- Description:
- DIODE ZENER 7.5V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,770
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Product details
Overview
SZMMSZ4693T1G from onsemi is a 7.5 V nominal Zener voltage regulator diode in SOD−123 package, rated for 500 mW power dissipation at 75°C, with 50 µA test current (IZT), 10 µA reverse leakage at 5.7 V, and ±5% Zener voltage tolerance. It serves as a precision voltage reference or overvoltage clamp in low-power analog circuits, automotive sensor interfaces, and industrial control signal conditioning.
For engineers reviewing the SZMMSZ4693T1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy at IZT = 50 µA, thermal derating behavior above 75°C, junction-to-lead thermal resistance of 150°C/W, and AEC−Q101 qualification for automotive use.
Technical Context
This device operates as a two-terminal, silicon planar Zener diode optimized for stable reverse-bias regulation. Its 7.5 V nominal Zener voltage falls within the positive temperature coefficient range (>5 V), exhibiting +5.7 mV/°C typical TC per Figure 1. The SOD−123 package enables automated placement while maintaining 340°C/W junction-to-ambient thermal resistance.
Designed for low-current regulation, it specifies VF ≤ 0.9 V at IF = 10 mA and supports operation across −55°C to +150°C junction temperature range. Reverse leakage remains ≤10 µA at VR = 5.7 V, ensuring minimal quiescent error in high-impedance bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.13–7.88 V at IZT = 50 µA - defines regulation band for precision reference applications |
| Power Dissipation (PD) | 500 mW @ TL = 75°C - sets maximum continuous DC power under standard board conditions |
| Thermal Resistance (RJL) | 150°C/W - determines junction temperature rise per unit power delivered to lead |
| Reverse Leakage (IR) | ≤10 µA @ VR = 5.7 V - limits error current in high-Z voltage divider or bias networks |
| Junction Temp Range | −55°C to +150°C - enables deployment in under-hood automotive and industrial environments |
| ESD Rating | Class 3 (>16 kV HBM) - ensures robustness during handling and PCB assembly |
| AEC−Q101 Qualified | Yes - confirms reliability validation for automotive electronic systems |
Pinout & Package
The SZMMSZ4693T1G is housed in a surface-mount SOD−123 plastic package (Case 425, 1.60 × 2.69 × 1.16 mm), with cathode indicated by a polarity band. It features two terminals only: Cathode (Pin 1) and Anode (Pin 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (Pin 1) | Zener breakdown terminal | Connected to regulated output node; reverse-biased during normal operation |
| Anode (Pin 2) | Reference/ground terminal | Typically tied to system ground or lower-potential rail in shunt regulator configuration |
Key Features
| Feature | Design Value |
|---|---|
| Low IZT operation | 50 µA test current enables regulation in ultra-low-power sensor biasing and battery-monitoring circuits |
| Pb−Free & RoHS | Compliant construction supports environmental compliance and lead-free reflow soldering (260°C/10 s) |
| Automated assembly optimized | SOD−123 footprint and marking design ensure reliable pick-and-place yield and optical recognition |
| High-density packaging | Small 1.60 × 2.69 mm outline allows placement in space-constrained modules and multi-layer PCBs |
| Stable TC performance | +5.7 mV/°C typical temperature coefficient minimizes drift in wide-temperature-range references |
Applications
| Automotive Sensor Biasing | Industrial Signal Conditioning |
|---|---|
Use Scenario: Providing stable 7.5 V reference for analog output sensors (e.g., pressure, temperature) in engine control units. IC Role / Device Role / Timing Role: Shunt voltage reference regulating sensor excitation voltage against supply variation. Use Value: Maintains <±1% output accuracy across −40°C to +125°C ambient due to AEC−Q101 qualification and controlled TC. |
Use Scenario: Clamping transient overvoltage on 5 V or 12 V I/O lines in programmable logic controllers. IC Role / Device Role / Timing Role: Transient voltage suppressor protecting downstream ADC inputs and microcontroller GPIOs. Use Value: Limits peak voltage to ≤7.88 V with <10 µA leakage at 5.7 V, preserving signal integrity without loading source. |
| Portable Medical Instrumentation | Consumer Audio Power Management |
Use Scenario: Generating precise bias for low-noise op-amps in handheld ECG front-ends. IC Role / Device Role / Timing Role: Low-current Zener reference establishing DC operating point for amplifier stages. Use Value: Delivers stable 7.5 V with <50 µA IZT, minimizing battery drain while meeting medical-grade stability requirements. |
Use Scenario: Regulating auxiliary 7.5 V rail for headphone amplifier ICs in Bluetooth speakers. IC Role / Device Role / Timing Role: Simple shunt regulator replacing LDO where efficiency and cost are prioritized over ripple rejection. Use Value: Achieves 500 mW dissipation capability in compact SOD−123, enabling thermal management without heatsinking. |
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-C7V5 | Same 7.5 V nominal Zener, but SOT−23 package (larger footprint, higher RJA = 380°C/W) | Higher thermal resistance limits power handling in dense layouts; not AEC−Q101 qualified | Select when SOT−23 is already standardized in BOM and automotive qualification is not required |
| MMSZ4693T1G | Identical electrical specs, but non-SZ prefix - not AEC−Q101 qualified or PPAP capable | Lacks automotive change control and site-specific traceability; same SOD−123 mechanical form factor | Choose for cost-sensitive industrial or consumer designs where automotive compliance is unnecessary |
Compared with BZX84-C7V5 and MMSZ4693T1G, the SZMMSZ4693T1G uniquely combines AEC−Q101 qualification, SOD−123 miniaturization, and 150°C/W junction-to-lead thermal resistance-making it optimal for thermally constrained automotive modules requiring long-term reliability validation.
Availability
SZMMSZ4693T1G is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial I/O protection, and portable medical instrumentation requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SZMMSZ4693T1G 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 SZMMSZ4xxxT1G series was developed specifically for AEC−Q101-compliant automotive subsystems requiring miniature, high-reliability Zener regulation in harsh thermal environments.
FAQ
What is the Zener voltage tolerance of SZMMSZ4693T1G?
The SZMMSZ4693T1G has a Zener voltage range of 7.13 V to 7.88 V at IZT = 50 µA, corresponding to ±5% tolerance around the 7.5 V nominal value. This tolerance is guaranteed across the full operating temperature range and is verified per onsemi's AEC−Q101 stress testing protocol. The SZMMSZ4693T1G datasheet specifies this range in Table 1 on page 3.
Is SZMMSZ4693T1G suitable for automotive applications?
Yes, SZMMSZ4693T1G is AEC−Q101 qualified and PPAP capable, with manufacturing traceability and change control specific to automotive requirements. Its −55°C to +150°C junction temperature range, 16 kV HBM ESD rating, and SOD−123 package reliability make it appropriate for engine control, body electronics, and ADAS sensor modules. The SZ prefix explicitly denotes this automotive-grade status.
What is the maximum power dissipation for SZMMSZ4693T1G on FR−5 board?
SZMMSZ4693T1G is rated for 500 mW total power dissipation on FR−5 board at TL = 75°C, with linear derating of 6.7 mW/°C above that temperature. This rating assumes minimum recommended footprint per onsemi's layout guidelines. Exceeding this limit risks junction temperature exceeding +150°C and permanent degradation of the SZMMSZ4693T1G device.
How does the temperature coefficient affect SZMMSZ4693T1G performance?
The SZMMSZ4693T1G exhibits a typical temperature coefficient of +5.7 mV/°C, consistent with Zener diodes above 5 V. This means its regulated voltage increases ~5.7 mV per degree Celsius rise in junction temperature. Designers must account for this drift in precision references; the SZMMSZ4693T1G datasheet provides TC curves in Figure 1 for accurate modeling across −55°C to +150°C.
What is the reverse leakage current specification for SZMMSZ4693T1G?
SZMMSZ4693T1G specifies a maximum reverse leakage current (IR) of 10 µA at VR = 5.7 V and TA = 25°C. This low leakage ensures minimal error in high-impedance voltage divider networks and preserves battery life in always-on sensor nodes. The value is confirmed in the Electrical Characteristics table on page 3 of the official SZMMSZ4693T1G datasheet.
SZMMSZ4693T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 7.5 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 5.7 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
SZMMSZ4693T1G FAQ
1.How can I place an order for SZMMSZ4693T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMMSZ4693T1G 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 SZMMSZ4693T1G reliable?
The price and inventory of SZMMSZ4693T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ4693T1G is usually 5 days.
3.What payment methods are accepted for SZMMSZ4693T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ4693T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMMSZ4693T1G?
SZMMSZ4693T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMMSZ4693T1G 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 SZMMSZ4693T1G?
For technical support, including SZMMSZ4693T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ4693T1G requirements.
6.How does Aetrix verify that SZMMSZ4693T1G is sourced from the original manufacturer or authorized distributors?
All SZMMSZ4693T1G 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 SZMMSZ4693T1G meets industry standards.
7.What is the process for return or replacement of SZMMSZ4693T1G?
All SZMMSZ4693T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ4693T1G, 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 SZMMSZ4693T1G part is unused and in its original packaging.
Return procedure for SZMMSZ4693T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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