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onsemi SZMM5Z36VT5G
- Part No.:
- SZMM5Z36VT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z36VT5G.pdf
- Description:
- DIODE ZENER 36V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:7,465
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Product details
Overview
SZMM5Z36VT5G from onsemi is a 36 V, ±5% tolerance Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 90 Ω maximum Zener impedance at 1 mA test current and <0.05 μA reverse leakage at 28.8 V, used for precision voltage regulation and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the SZMM5Z36VT5G 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 with sharp reverse breakdown at nominal 36 V, designed for stable regulation under low-current conditions (IZT = 1 mA for 27–75 V range). Its 250 °C/W junction-to-ambient thermal resistance and 0.7 mm body height enable reliable operation in thermally constrained environments.
The SZMM5Z36VT5G features Class 3 ESD robustness (>16 kV HBM), Pb-free matte tin lead finish, and MSL 1 reflow compatibility up to 260 °C - confirming suitability for automotive-grade assembly and automated surface-mount processes without derating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 34 V min / 36 V nom / 38 V max at IZT = 1 mA - defines tight regulation window for 3.3 V/5 V rail clamping and reference stability. |
| Power Dissipation (PD) | 500 mW at TA = 25 °C - supports continuous regulation in handheld devices without forced cooling. |
| Zener Impedance (ZZT) | 90 Ω max at IZT = 1 mA - ensures minimal output voltage variation under dynamic load transients. |
| Reverse Leakage (IR) | <0.05 μA at VR = 28.8 V - guarantees negligible standby current in battery-powered systems. |
| ESD Rating | >16 kV per Human Body Model - eliminates need for external ESD protection in front-end I/O circuits. |
| Thermal Resistance (RJA) | 250 °C/W on FR-4 board - enables thermal design margin calculation for ambient temperatures up to +125 °C. |
| Package | SOD-523 (1.20 × 0.80 × 0.70 mm) - fits 0402 footprint area with 30% lower height than SOD-323, critical for ultra-thin modules. |
Pinout & Package
SOD-523 surface-mount package with cathode marked by polarity band; compact 1.20 mm × 0.80 mm body and 0.7 mm profile optimized for high-density routing and thin-profile assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated voltage node; reverse-biased during Zener operation; polarity band identifies terminal for correct PCB orientation. |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential rail; completes conduction path during overvoltage clamp events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including infotainment power rails and sensor interface protection. |
| 16 kV HBM ESD Robustness | Eliminates external TVS diodes in USB, audio jack, and button input circuits of consumer portables. |
| 0.7 mm Profile SOD-523 | Enables placement beneath connectors or in stacked-board interposers where vertical clearance is limited to ≤0.8 mm. |
| Pb-Free & RoHS Compliant | Meets global environmental compliance requirements for medical, industrial, and automotive end equipment. |
| MSL 1 Reflow Rating | Supports single-pass reflow without moisture sensitivity concerns, reducing manufacturing yield risk. |
Applications
| Smartphone Power Management | Automotive Cabin Controller |
|---|---|
|
Use Scenario: Clamping transient spikes on 3.3 V I/O lines during hot-plug insertion of USB-C accessories. IC Role / Device Role / Timing Role: Voltage clamp protecting MCU GPIOs and level translators from ESD and load-dump induced overvoltage. Use Value: Prevents latch-up and permanent damage with sub-100 ns response and <0.05 μA leakage preserving battery life. |
Use Scenario: Providing stable 36 V reference for analog sensor signal conditioning in HVAC control modules. IC Role / Device Role / Timing Role: Precision shunt reference enabling 12-bit ADC accuracy across −40 °C to +125 °C operating range. Use Value: Maintains ±5% voltage tolerance and <100 ppm/°C tempco over full automotive temperature range. |
| Wearable Health Monitor | Industrial IoT Edge Node |
|
Use Scenario: Regulating bias voltage for optical heart-rate sensor LEDs powered from coin-cell batteries. IC Role / Device Role / Timing Role: Low-power Zener regulator establishing fixed forward LED current via current-limiting resistor. Use Value: Delivers stable 36 V reference with only 0.05 μA quiescent draw, extending battery runtime by >15% vs. higher-leakage alternatives. |
Use Scenario: Protecting RS-485 transceiver inputs against surge events in factory automation gateways. IC Role / Device Role / Timing Role: Primary overvoltage clamp absorbing 1 kV/500 A surge pulses per IEC 61000-4-5 Level 3. Use Value: Withstands repeated surges without parameter shift due to robust 500 mW power rating and 250 °C/W thermal design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584-C36 | Same 36 V nominal Zener voltage but ±5% tolerance, 300 mW rating, SOD-323 package (1.7 × 1.3 × 1.1 mm). | Larger footprint and lower power handling limit use in space-constrained or high-dissipation scenarios. | Select when legacy SOD-323 layout exists and thermal load remains below 300 mW. |
| MMSZ5245B | 36 V nominal, ±5% tolerance, 500 mW rating, but SOD-123 package (3.7 × 1.6 × 1.1 mm) and no AEC-Q101 qualification. | Not suitable for automotive applications; larger size impedes ultra-dense PCB integration. | Choose for cost-sensitive industrial designs where AEC-Q101 and miniaturization are not required. |
Compared with BZX584-C36 and MMSZ5245B, the SZMM5Z36VT5G uniquely combines AEC-Q101 qualification, SOD-523 miniaturization, and 500 mW dissipation - making it the only option qualified for automotive front-end protection in next-gen compact ECUs.
Availability
SZMM5Z36VT5G is available at Aetrix Electronics and suitable for smartphone power management, automotive cabin controllers, wearable health monitors, and industrial IoT edge nodes requiring stable component supply with guaranteed long-term continuity.
Supply support for SZMM5Z36VT5G 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 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 was engineered specifically for miniaturized voltage regulation and ESD protection in portable and automotive electronics, emphasizing ultra-small footprint, high reliability, and AEC-Q101 compliance.
FAQ
What is the Zener voltage tolerance of SZMM5Z36VT5G?
The SZMM5Z36VT5G has a standard tolerance of ±5%, with a specified Zener voltage range of 34 V (minimum) to 38 V (maximum) at 1 mA test current. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the official onsemi datasheet, and applies across the full operating temperature range of −65 °C to +150 °C. The SZMM5Z36VT5G maintains this tolerance without requiring external trimming or calibration.
Is SZMM5Z36VT5G qualified for automotive applications?
Yes, the SZMM5Z36VT5G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the "Specification Features" section of the onsemi datasheet. The "SZ" prefix denotes automotive-grade screening, including stress testing for temperature cycling, humidity, and mechanical shock. This qualification makes the SZMM5Z36VT5G suitable for use in engine control units, ADAS sensors, and infotainment systems where reliability under harsh conditions is mandatory.
What is the maximum power dissipation of SZMM5Z36VT5G at 85 °C ambient?
At 85 °C ambient temperature, the SZMM5Z36VT5G's maximum power dissipation is 260 mW. This is calculated using the 4.0 mW/°C derating factor from the Maximum Ratings table: 500 mW − (85 − 25) × 4.0 = 260 mW. The derating curve in Figure 1 of the datasheet confirms this linear reduction, and the value assumes mounting on an FR-4 board with a 1 cm² copper pad as specified in Note 1.
Does SZMM5Z36VT5G have a defined Zener impedance at low current?
Yes, the SZMM5Z36VT5G specifies Zener impedance of 90 Ω maximum at IZT = 1 mA, and 500 Ω maximum at IZK = 0.1 mA, per the Electrical Characteristics table. These values are measured under standardized test conditions (TA = 25 °C) and define the device's ability to maintain stable regulation during light-load or standby operation - critical for battery-powered systems where current draw must remain predictable.
What marking code identifies SZMM5Z36VT5G on the SOD-523 package?
The SZMM5Z36VT5G is marked with "19" on the SOD-523 package, as shown in the Device Marking column of the Electrical Characteristics table on page 3 of the onsemi datasheet. The "19" code appears adjacent to a cathode polarity band, and the "M" date code follows per the generic marking diagram. No "SZ" prefix appears on the physical device - the prefix is orderable-only and indicates automotive qualification in the part number.
SZMM5Z36VT5G 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):
- 36 V
- Tolerance:
- ±5.56%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 25.2 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
SZMM5Z36VT5G FAQ
1.How can I place an order for SZMM5Z36VT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z36VT5G 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 SZMM5Z36VT5G reliable?
The price and inventory of SZMM5Z36VT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z36VT5G is usually 5 days.
3.What payment methods are accepted for SZMM5Z36VT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z36VT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z36VT5G?
SZMM5Z36VT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z36VT5G 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 SZMM5Z36VT5G?
For technical support, including SZMM5Z36VT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z36VT5G requirements.
6.How does Aetrix verify that SZMM5Z36VT5G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z36VT5G 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 SZMM5Z36VT5G meets industry standards.
7.What is the process for return or replacement of SZMM5Z36VT5G?
All SZMM5Z36VT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z36VT5G, 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 SZMM5Z36VT5G part is unused and in its original packaging.
Return procedure for SZMM5Z36VT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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