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onsemi SZMM5Z5V1T5G
- Part No.:
- SZMM5Z5V1T5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z5V1T5G.pdf
- Description:
- DIODE ZENER 4.8V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:21,814
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Product details
Overview
SZMM5Z5V1T5G from onsemi is a 5.1 V ±5% Zener voltage regulator diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 60 Ω maximum Zener impedance at 5 mA test current and 2 µA reverse leakage at 2 V, used for precision voltage reference and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the SZMM5Z5V1T5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (250 °C/W), ESD rating (>16 kV HBM), AEC-Q101 qualification, and SOD-523 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal shunt voltage regulator, maintaining stable output voltage across variable load currents by conducting reverse breakdown current above its nominal 5.1 V Zener voltage. It exhibits low dynamic impedance (60 Ω @ IZT = 5 mA) and tight voltage tolerance (4.8–5.4 V), enabling accurate clamping in low-power signal conditioning paths.
Designed for surface-mount assembly on FR-4 boards, it supports reflow up to 260 °C and meets MSL 1 requirements. Its 1.20 mm × 0.80 mm × 0.70 mm body and 100% matte tin lead finish ensure compatibility with automated pick-and-place and lead-free soldering processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.8 V min / 5.1 V nom / 5.4 V max @ IZT = 5 mA - defines precise clamping threshold for 5 V rail protection |
| Power Dissipation (PD) | 500 mW @ TA = 25 °C - sets maximum continuous thermal load on PCB without heatsinking |
| Zener Impedance (ZZT) | 60 Ω max @ IZT = 5 mA - ensures minimal voltage shift under varying load current |
| Reverse Leakage (IR) | 2 µA max @ VR = 2 V - guarantees low standby current in battery-powered systems |
| ESD Rating | >16 kV per Human Body Model - provides robust handling immunity during manufacturing and field operation |
| Temperature Coefficient | −2.7 mV/°C @ IZT - quantifies voltage drift over operating temperature range (−65 to +150 °C) |
| Capacitance | 225 pF max @ VR = 0 V, f = 1 MHz - limits high-frequency noise coupling in RF-adjacent circuits |
Pinout & Package
Package: SOD-523 (Case 502, Style 1), 1.20 mm × 0.80 mm × 0.70 mm body, cathode marked with polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to circuit ground or lower potential; completes shunt regulation path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including infotainment power rails and sensor interface protection |
| Pb-Free & RoHS compliant | Enables compliance with global environmental regulations and lead-free assembly requirements |
| Low-profile SOD-523 package | Reduces board area by >50% vs. SOD-123, critical for ultra-thin mobile and wearable designs |
| Class 3 HBM ESD rating | Eliminates need for external ESD protection in handheld device front-end circuits |
| Stable 5.1 V reference | Supports ADC reference buffering and microcontroller brown-out detection with ±5% accuracy |
Applications
| Smartphone Power Management | Automotive Cabin Sensor Interface |
|---|---|
|
Use Scenario: Clamping transient spikes on 5 V USB charging input lines in compact smartphone mainboards. IC Role / Device Role / Timing Role: Shunt Zener regulator providing overvoltage protection for PMIC input stage. Use Value: Prevents damage to downstream 5 V LDOs and USB PHYs during hot-plug events with <2 µA leakage at standby. |
Use Scenario: Stabilizing reference voltage for analog-output cabin temperature sensors in automotive HVAC modules. IC Role / Device Role / Timing Role: Precision voltage clamp ensuring consistent sensor excitation under wide ambient temperature swings. Use Value: Maintains sensor linearity across −40 to +125 °C due to −2.7 mV/°C tempco and AEC-Q101 reliability validation. |
| Wearable Fitness Tracker | Industrial IoT Edge Node |
|
Use Scenario: Providing stable 5.1 V reference for heart-rate monitor ADC in sub-10 mm² wristband PCBs. IC Role / Device Role / Timing Role: Low-capacitance (225 pF) Zener reference minimizing signal distortion in analog front-end. Use Value: Enables high-resolution biopotential measurement without adding layout parasitics from larger packages. |
Use Scenario: Protecting RS-485 transceiver VCC pins from induced surges on factory floor communication buses. IC Role / Device Role / Timing Role: Fast-response shunt clamp absorbing short-duration transients before they reach IC supply rails. Use Value: Survives >16 kV ESD events per HBM, reducing field failure rate in unshielded industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C5V1LT1G | Same 5.1 V nominal Zener, but ±1% tolerance and 300 mW rating; SOD-523 package | Higher precision required in reference circuits; lower power derating limits use in sustained clamp scenarios | Select when tighter voltage accuracy outweighs power handling needs |
| MMSZ5222BT1G | 5.1 V nominal, ±5% tolerance, but SOD-123 package (2.7 × 1.6 mm) and 500 mW rating | Larger footprint incompatible with ultra-dense layouts; higher thermal resistance (350 °C/W) | Choose only if legacy board design prohibits SOD-523 rework |
Compared with BZX584C5V1LT1G and MMSZ5222BT1G, SZMM5Z5V1T5G uniquely balances automotive-grade reliability (AEC-Q101), ultra-compact size, and 500 mW power capability-making it optimal for new designs prioritizing space, ruggedness, and thermal performance in portable and vehicular systems.
Availability
SZMM5Z5V1T5G is available at Aetrix Electronics and suitable for smartphone power management, automotive cabin sensor interfaces, and wearable fitness tracker designs requiring stable component supply with full traceability and lifecycle support.
Supply support for SZMM5Z5V1T5G 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.
SZMM5Z5V1T5G belongs to the MM5ZxxxT1G/SZMM5ZxxxT1G Zener regulator family, engineered specifically for space-constrained, high-reliability voltage reference and clamping in portable and automotive electronics.
FAQ
What is the Zener voltage tolerance of SZMM5Z5V1T5G?
The SZMM5Z5V1T5G has a standard tolerance of ±5%, with a specified Zener voltage range of 4.8 V minimum to 5.4 V maximum at 5 mA test current (IZT). This tolerance is confirmed in the Electrical Characteristics table on page 3 of the onsemi datasheet (Rev. 19, April 2025), and applies across the full operating temperature range of −65 °C to +150 °C.
Is SZMM5Z5V1T5G qualified for automotive applications?
Yes, SZMM5Z5V1T5G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the "Specification Features" section of the onsemi datasheet. The "SZ" prefix denotes devices meeting automotive-specific site and control change requirements, making SZMM5Z5V1T5G suitable for under-hood and cabin electronics where reliability under thermal cycling and vibration is critical.
What is the maximum Zener impedance of SZMM5Z5V1T5G and at what condition?
The maximum Zener impedance (ZZT) of SZMM5Z5V1T5G is 60 Ω, measured at the Zener test current IZT = 5 mA and ambient temperature TA = 25 °C. This value is documented in the Electrical Characteristics table (page 3) and directly impacts voltage regulation stability under dynamic load conditions.
Does SZMM5Z5V1T5G have an ESD rating, and if so, what is it?
SZMM5Z5V1T5G has an ESD rating of Class 3 per the Human Body Model (HBM), exceeding 16 kV. This specification is listed in the "Specification Features" section of the onsemi datasheet and reflects validated robustness against electrostatic discharge during handling, assembly, and end-use in consumer and automotive environments.
What is the thermal resistance (RJA) of SZMM5Z5V1T5G on FR-4 board?
The junction-to-ambient thermal resistance (RJA) of SZMM5Z5V1T5G is 250 °C/W when mounted on a single-sided FR-4 board with a 1 cm² copper pad, as specified in the "Maximum Ratings" table. This value determines allowable power dissipation at elevated ambient temperatures and must be applied with the derating curve shown in Figure 1 of the datasheet.
SZMM5Z5V1T5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.8 V
- Tolerance:
- ±5.88%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 2 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
SZMM5Z5V1T5G FAQ
1.How can I place an order for SZMM5Z5V1T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z5V1T5G 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 SZMM5Z5V1T5G reliable?
The price and inventory of SZMM5Z5V1T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z5V1T5G is usually 5 days.
3.What payment methods are accepted for SZMM5Z5V1T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z5V1T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z5V1T5G?
SZMM5Z5V1T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z5V1T5G 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 SZMM5Z5V1T5G?
For technical support, including SZMM5Z5V1T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z5V1T5G requirements.
6.How does Aetrix verify that SZMM5Z5V1T5G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z5V1T5G 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 SZMM5Z5V1T5G meets industry standards.
7.What is the process for return or replacement of SZMM5Z5V1T5G?
All SZMM5Z5V1T5G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z5V1T5G, 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 SZMM5Z5V1T5G part is unused and in its original packaging.
Return procedure for SZMM5Z5V1T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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