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onsemi SZMMSZ4690ET1G
- Part No.:
- SZMMSZ4690ET1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
SZMMSZ4690ET1G.pdf
- Description:
- DIODE ZENER 5.6V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,286
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Product details
Overview
SZMMSZ4690ET1G from onsemi is a 5.6 V ±5% Zener voltage regulator diode in SOD-123 package, rated for 500 mW power dissipation at 75 °C on FR-5 board, with 10 µA reverse leakage at 4 V, 225 W peak surge capability (8 × 20 µs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the SZMMSZ4690ET1G datasheet, pinout, applications, or equivalent options, key selection criteria include nominal Zener voltage tolerance, thermal derating behavior, junction-to-lead thermal resistance (150 °C/W), ESD robustness (>16 kV HBM), and Pb-free SOD-123 surface-mount compatibility with automated assembly.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and temperature conditions. Its 5.6 V nominal Zener voltage is specified at 50 mA test current (IZT), with dynamic impedance of 15 Ω at IZ = 5 mA and temperature coefficient near 0 mV/°C in this voltage range.
The device features a cathode-anode two-terminal structure, polarity marked by band on SOD-123 case, and is characterized for operation across −55 °C to +150 °C junction temperature. It delivers 500 mW steady-state power on FR-5 board with linear derating above 75 °C (6.7 mW/°C) and supports transient surge handling up to 225 W per non-repetitive 8 × 20 µs pulse.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.32–5.88 V @ IZT = 50 mA - defines stable regulation window for low-voltage reference circuits |
| Power Dissipation (PD) | 500 mW @ TL = 75 °C - maximum continuous power on FR-5 board before thermal derating applies |
| Peak Surge Power (Ppk) | 225 W @ 8 × 20 µs - supports transient overvoltage clamping without failure |
| Reverse Leakage (IR) | 10 µA @ VR = 4 V - ensures minimal quiescent current in standby bias networks |
| Thermal Resistance (RJL) | 150 °C/W - enables predictable junction temperature rise from lead-to-junction conduction path |
| ESD Rating | Class 3 (>16 kV HBM) - provides robust handling during PCB assembly and system integration |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, humidity, and mechanical stress |
Pinout & Package
SZMMSZ4690ET1G uses the SOD-123 surface-mount package (1.60 × 2.69 × 1.16 mm), with cathode identified by a band on the case. The package is void-free, thermosetting plastic with UL 94 V-0 flammability rating and Pb-free construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Unbanded End) | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW Power Rating | Enables use in compact voltage reference and overvoltage protection circuits without external heatsinking on standard FR-5 boards |
| 15 Ω Dynamic Impedance | Ensures tight regulation stability under small-signal AC variations around 5.6 V nominal output |
| AEC-Q101 Qualification | Validates suitability for automotive body control modules, infotainment power rails, and ADAS sensor biasing |
| ESD Class 3 Robustness | Eliminates need for additional input-stage ESD protection in handheld and industrial interface designs |
| Pb-Free SOD-123 Construction | Meets RoHS compliance requirements while maintaining compatibility with standard reflow profiles (260 °C/10 s max) |
Applications
| Automotive Body Control Unit (BCU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 5.6 V reference for microcontroller ADC inputs and CAN transceiver bias in door module ECUs. IC Role / Device Role / Timing Role: Zener voltage reference and overvoltage clamp protecting downstream logic from battery transients. Use Value: Maintains <±2% reference accuracy across −40 °C to +125 °C ambient with no active regulation circuitry required. | Use Scenario: Biasing precision RTD or thermistor bridges in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Low-drift voltage reference source for ratiometric measurement systems requiring <10 ppm/°C TC. Use Value: Delivers 0 mV/°C temperature coefficient near 5.6 V, minimizing calibration drift over operating temperature range. |
| USB-C Power Delivery Clamp | Medical Diagnostic Equipment Reference |
Use Scenario: Clamping VBUS line surges during hot-plug events in portable medical chargers compliant with USB PD 3.0. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between VBUS and ground to limit fault energy below 225 W threshold. Use Value: Absorbs 8 × 20 µs surges up to 225 W without degradation, meeting IEC 61000-4-5 Level 3 immunity requirements. | Use Scenario: Generating calibrated excitation voltage for photodiode arrays in portable blood oximeters. IC Role / Device Role / Timing Role: Precision DC reference source with <10 µA leakage ensuring stable photocurrent measurement baseline. Use Value: Enables sub-1% full-scale error in optical signal chain by eliminating reference drift and leakage-induced offset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4690ET1G | No SZ prefix; not AEC-Q101 qualified; identical electrical specs and SOD-123 package | Targeted for commercial/industrial use only; lacks automotive qualification documentation and PPAP support | Select when automotive qualification is unnecessary and cost sensitivity is higher |
| BZX84-C5V6LT1G | Same 5.6 V nominal Zener, but 350 mW rating, 22 Ω ZZT, and SOT-23 package (larger footprint, different thermal path) | Lower power handling limits use in high-current bias networks; SOT-23 requires different stencil and placement setup | Select when board space allows SOT-23 and peak power demands stay below 350 mW |
Compared with MMSZ4690ET1G and BZX84-C5V6LT1G, SZMMSZ4690ET1G uniquely combines AEC-Q101 qualification, 500 mW power rating, and SOD-123 miniaturization-making it optimal for space-constrained automotive modules requiring guaranteed reliability and surge resilience.
Availability
SZMMSZ4690ET1G is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor interfaces, and medical diagnostic equipment requiring stable component supply, AEC-Q101 compliance, and Pb-free SOD-123 packaging.
Supply support for SZMMSZ4690ET1G 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 MMSZ4xxx/SZMMSZ4xxx series was designed specifically for high-reliability, surface-mount voltage regulation and transient suppression in space-constrained, thermally demanding environments-including automotive ECUs and portable medical devices.
FAQ
What is the nominal Zener voltage and tolerance of SZMMSZ4690ET1G?
The SZMMSZ4690ET1G has a nominal Zener voltage of 5.6 V with a tolerance of ±5%, specified as 5.32 V (min) to 5.88 V (max) at IZT = 50 mA and TA = 25 °C. This tight tolerance ensures consistent reference performance across production lots and supports precision biasing in analog front-ends where absolute voltage accuracy matters.
Is SZMMSZ4690ET1G suitable for automotive applications?
Yes, SZMMSZ4690ET1G is AEC-Q101 qualified and PPAP capable, with full traceability, controlled manufacturing site requirements, and validation across temperature cycling, humidity, and mechanical stress tests. Its SZ prefix explicitly denotes automotive-grade compliance, making SZMMSZ4690ET1G appropriate for use in body control modules, lighting drivers, and ADAS sensor power supplies.
What is the maximum power dissipation and thermal derating behavior of SZMMSZ4690ET1G?
SZMMSZ4690ET1G delivers 500 mW power dissipation at TL = 75 °C on FR-5 board, derating linearly at 6.7 mW/°C above that temperature. Junction-to-lead thermal resistance is 150 °C/W, enabling accurate thermal modeling. At 100 °C board temperature, usable power drops to ~333 mW-critical for thermal design in sealed enclosures or high-ambient environments.
Does SZMMSZ4690ET1G have ESD protection built-in?
Yes, SZMMSZ4690ET1G is rated Class 3 per Human Body Model with >16 kV ESD withstand capability. This eliminates the need for external TVS diodes in many I/O protection schemes and ensures robust handling during automated PCB assembly, field service, and end-user interaction-particularly valuable in handheld diagnostic tools and automotive service ports.
What package type and marking does SZMMSZ4690ET1G use?
SZMMSZ4690ET1G uses the SOD-123 package (1.60 × 2.69 × 1.16 mm), with cathode indicated by a band. Its marking code is "CG9", followed by a date code and Pb-free indicator ("G" or microdot). The package meets UL 94 V-0 flammability rating and supports standard Pb-free reflow profiles up to 260 °C for 10 seconds.
SZMMSZ4690ET1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- -
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 4 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
SZMMSZ4690ET1G FAQ
1.How can I place an order for SZMMSZ4690ET1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMMSZ4690ET1G 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 SZMMSZ4690ET1G reliable?
The price and inventory of SZMMSZ4690ET1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ4690ET1G is usually 5 days.
3.What payment methods are accepted for SZMMSZ4690ET1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ4690ET1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMMSZ4690ET1G?
SZMMSZ4690ET1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMMSZ4690ET1G 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 SZMMSZ4690ET1G?
For technical support, including SZMMSZ4690ET1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ4690ET1G requirements.
6.How does Aetrix verify that SZMMSZ4690ET1G is sourced from the original manufacturer or authorized distributors?
All SZMMSZ4690ET1G 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 SZMMSZ4690ET1G meets industry standards.
7.What is the process for return or replacement of SZMMSZ4690ET1G?
All SZMMSZ4690ET1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ4690ET1G, 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 SZMMSZ4690ET1G part is unused and in its original packaging.
Return procedure for SZMMSZ4690ET1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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