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onsemi SZMM5Z3V6T1G
- Part No.:
- SZMM5Z3V6T1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z3V6T1G.pdf
- Description:
- DIODE ZENER 3.6V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:689
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Product details
Overview
SZMM5Z3V6T1G from onsemi is a 3.6 V ±5% Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 90 Ω maximum Zener impedance at 5 mA test current and <5 µA reverse leakage at 1.0 V, used for precision voltage clamping and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the SZMM5Z3V6T1G 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 voltage reference diode, conducting in reverse breakdown to maintain stable 3.6 V regulation under controlled current conditions. Its low-profile SOD-523 package enables placement on compact PCBs where board area and height are constrained.
The SZMM5Z3V6T1G exhibits a temperature coefficient of −3.5 mV/°C and 450 pF capacitance at 0 V bias and 1 MHz, making it suitable for low-frequency stabilization and transient suppression rather than high-speed signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 3.6 V nominal, 3.4–3.8 V range at 5 mA - defines precise clamping threshold for 3.3 V rail protection |
| Power Rating | 500 mW at 25 °C, derated 4.0 mW/°C above - limits continuous dissipation in thermally unmanaged handheld designs |
| Zener Impedance | 90 Ω max at 5 mA - determines regulation stability under varying load current |
| Reverse Leakage | ≤5 µA at VR = 1.0 V - ensures minimal standby current in battery-powered systems |
| ESD Rating | Class 3 (>16 kV HBM) - provides robust handling without external protection in consumer assembly lines |
| Package | SOD-523 (1.20 × 0.80 × 0.70 mm) - fits 0402-equivalent footprints with reduced height for stacked modules |
Pinout & Package
SOD-523 surface-mount package with cathode marked by polarity band; body dimensions 1.20 mm × 0.80 mm × 0.70 mm, lead finish 100% matte tin, MSL 1, reflow capable up to 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased during Zener operation |
| 2 (Unmarked End) | Anode | Connected to ground or lower-potential reference; completes conduction path during clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive subsystems requiring reliability under temperature cycling and vibration |
| Pb-Free & RoHS Compliant | Meets global environmental compliance without compromising solderability or thermal performance |
| Low Capacitance (450 pF) | Minimizes signal distortion in DC-biased protection paths near analog sensors or LDO inputs |
| High ESD Robustness (>16 kV HBM) | Eliminates need for discrete TVS in front-end I/O stages of portable devices |
Applications
| Battery Voltage Monitoring | USB Port Overvoltage Clamp |
|---|---|
Use Scenario: Monitoring Li-ion cell voltage in wearables using a microcontroller ADC with internal 3.3 V reference. IC Role / Device Role / Timing Role: Zener reference diode providing stable 3.6 V clamp to protect ADC input from >4.2 V cell peaks. Use Value: Prevents ADC saturation and input stage damage while enabling accurate full-scale measurement across 3.0–4.2 V operating range. | Use Scenario: Protecting USB data lines and VBUS detection circuitry in smartphone accessory docks. IC Role / Device Role / Timing Role: Low-capacitance shunt regulator clamping transients induced by hot-plug events or ESD discharge. Use Value: Maintains signal integrity on D+/D− lines without degrading USB 2.0 rise/fall times due to 450 pF capacitance. |
| Low-Power Sensor Biasing | Industrial PLC Input Protection |
Use Scenario: Providing stable bias voltage for MEMS accelerometer output stage in IoT edge nodes. IC Role / Device Role / Timing Role: Precision Zener regulating bias rail to ensure consistent sensor gain and offset across temperature. Use Value: Compensates for supply variation in coin-cell-powered nodes, maintaining ±0.5% measurement accuracy over −40 to +85 °C. | Use Scenario: Protecting 24 V digital input channels in factory automation controllers against field-wiring surges. IC Role / Device Role / Timing Role: Front-end clamping element limiting voltage seen by optocoupler LED driver IC. Use Value: Absorbs 500 mW surge energy without latch-up, extending system uptime versus higher-power alternatives requiring 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 |
|---|---|---|---|
| BZX584-C3V6 | Same 3.6 V nominal, ±5% tolerance, but SOD-323 package (1.7 × 1.3 × 0.9 mm) - 42% larger footprint | Higher thermal mass allows 500 mW at 75 °C ambient vs. SZMM5Z3V6T1G's 25 °C limit | Select when board layout permits larger pad area and higher ambient temperature operation is required |
| MMSZ4685T1G | 3.6 V nominal, ±5%, but 350 mW power rating and 110 Ω Zz - lower power handling and poorer regulation | No AEC-Q101 qualification; intended for commercial-grade consumer products only | Select for cost-sensitive non-automotive applications where 500 mW headroom and automotive qualification are unnecessary |
Compared with BZX584-C3V6 and MMSZ4685T1G, the SZMM5Z3V6T1G delivers superior space efficiency in SOD-523, guaranteed automotive qualification, and tighter Zener impedance - critical for precision clamping in miniaturized, mission-critical systems.
Availability
SZMM5Z3V6T1G is available at Aetrix Electronics and suitable for cellular phones, handheld portables, and high-density PC boards requiring stable component supply and long-term lifecycle support.
Supply support for SZMM5Z3V6T1G 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 MM5Z/SZMM5Z series targets ultra-compact voltage regulation in portable and automotive electronics, emphasizing low profile, high ESD immunity, and AEC-Q101 compliance for harsh environments.
FAQ
What is the Zener voltage tolerance of SZMM5Z3V6T1G?
The SZMM5Z3V6T1G has a nominal Zener voltage of 3.6 V with a standard tolerance of ±5%, meaning its actual breakdown voltage falls between 3.4 V and 3.8 V when tested at 5 mA reverse current and 25 °C ambient temperature. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet.
Is SZMM5Z3V6T1G qualified for automotive applications?
Yes, the SZMM5Z3V6T1G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the datasheet's Specification Features section. The "SZ" prefix denotes compliance with automotive-specific site and control change requirements, distinguishing it from the commercial-grade MM5Z3V6T1G variant.
What is the maximum power dissipation of SZMM5Z3V6T1G at 75 °C ambient?
At 75 °C ambient, the SZMM5Z3V6T1G's maximum power dissipation is 300 mW. This is calculated using the 4.0 mW/°C derating factor from its 500 mW rating at 25 °C: 500 mW − (75 − 25) × 4.0 mW = 300 mW. Derating follows the curve shown in Figure 1 of the datasheet.
Does SZMM5Z3V6T1G have a polarity marking, and how is it oriented?
Yes, the SZMM5Z3V6T1G uses Style 1 marking with a cathode band on Pin 1. As shown in the Marking Diagram on page 4 of the datasheet, the banded end corresponds to the cathode terminal, and the unmarked end is the anode - critical for correct orientation during automated placement.
What is the reverse leakage current specification for SZMM5Z3V6T1G at 1.0 V?
The reverse leakage current for SZMM5Z3V6T1G is specified as ≤5 µA at VR = 1.0 V, per the Electrical Characteristics table on page 3. This low leakage supports extended battery life in always-on portable devices where standby current must remain below 10 µA.
SZMM5Z3V6T1G 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):
- 3.6 V
- Tolerance:
- ±5.6%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
SZMM5Z3V6T1G FAQ
1.How can I place an order for SZMM5Z3V6T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z3V6T1G 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 SZMM5Z3V6T1G reliable?
The price and inventory of SZMM5Z3V6T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z3V6T1G is usually 5 days.
3.What payment methods are accepted for SZMM5Z3V6T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z3V6T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z3V6T1G?
SZMM5Z3V6T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z3V6T1G 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 SZMM5Z3V6T1G?
For technical support, including SZMM5Z3V6T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z3V6T1G requirements.
6.How does Aetrix verify that SZMM5Z3V6T1G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z3V6T1G 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 SZMM5Z3V6T1G meets industry standards.
7.What is the process for return or replacement of SZMM5Z3V6T1G?
All SZMM5Z3V6T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z3V6T1G, 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 SZMM5Z3V6T1G part is unused and in its original packaging.
Return procedure for SZMM5Z3V6T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZMM5Z3V6T1G Tags
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