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onsemi SZMM3Z36VT1G
- Part No.:
- SZMM3Z36VT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SZMM3Z36VT1G.pdf
- Description:
- DIODE ZENER 36V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:5,558
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Product details
Overview
SZMM3Z36VT1G from onsemi is a 36 V ±5.6% Zener voltage regulator diode in SOD−323 package, rated for 300 mW steady-state power dissipation at 25°C, with 90 Ω maximum dynamic impedance at 2 mA test current and 0.05 µA reverse leakage at 25.2 V, used for precision voltage reference and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the SZMM3Z36VT1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5.6%), thermal resistance (416 °C/W), AEC−Q101 qualification, Pb−free SOD−323 footprint compatibility, and ESD robustness (>16 kV HBM).
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 36 V Zener threshold. Its low 0.9 mm body height and 1.7 mm × 1.25 mm outline enable high-density PCB integration.
Designed for automotive and industrial applications requiring PPAP capability, the SZMM3Z36VT1G features Class 3 ESD rating (>16 kV HBM), UL 94 V−0 flammability compliance, and junction temperature range of −65°C to +150°C - supporting operation in thermally demanding environments without derating below 25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 34 V min / 36 V nom / 38 V max @ IZT = 2 mA - defines regulation band for precision reference design |
| Power Dissipation (PD) | 300 mW @ TA = 25°C - sets maximum continuous power handling on FR-4 board |
| Zener Impedance (ZZT) | 90 Ω max @ IZT = 2 mA - determines output voltage stability under load transients |
| Reverse Leakage (IR) | 0.05 µA max @ VR = 25.2 V - ensures minimal quiescent current in standby circuits |
| Thermal Resistance (RJA) | 416 °C/W - dictates temperature rise per milliwatt, critical for thermal margin in sealed enclosures |
| ESD Rating | Class 3 (>16 kV) per HBM - enables direct handling in non-EPA assembly without additional protection |
| Operating Temperature | −65°C to +150°C - supports under-hood automotive and industrial control module deployment |
Pinout & Package
SOD−323 surface-mount package: 1.70 mm × 1.25 mm body, 0.9 mm height, cathode marked by polarity band; void-free molded plastic case with Pb−free Sn plating; UL 94 V−0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated voltage node; reverse-biased during regulation; polarity band identifies this terminal |
| 2 (Anode) | Reference ground return | Typically tied to system ground or lower-potential rail; completes current path during Zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC−Q101 qualified | Validated for automotive electronics use with PPAP documentation support |
| Pb−free construction | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-609 Category 1 |
| High ESD immunity | Withstands >16 kV human-body-model discharge without parameter shift or failure |
| Low-profile SOD−323 | Enables placement beneath connectors or in 0.5 mm pitch BGA escape zones |
| Stable tempco | Temperature coefficient of +0.0374 %/°C - minimizes drift over −40°C to +125°C operating range |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 36 V reference for LIN bus transceiver biasing and microcontroller reset supervision in door module ECUs. IC Role / Device Role / Timing Role: Shunt voltage reference and overvoltage clamp protecting 3.3 V LDO inputs from battery transients. Use Value: Maintains regulation within ±5.6% across −40°C to +125°C ambient while surviving ISO 7637-2 pulse 5a surges up to 120 V. |
Use Scenario: Stabilizing excitation voltage for 4–20 mA loop-powered pressure sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Precision Zener reference for DAC output scaling and ADC input protection against field-wiring faults. Use Value: Delivers <0.05 µA leakage at 25.2 V, reducing sensor offset error contribution to <1 LSB in 16-bit systems. |
| Portable Medical Monitor Power Rail | 5G Small Cell RF Front-End Biasing |
Use Scenario: Regulating auxiliary 36 V supply for OLED display backlight drivers in handheld patient monitors. IC Role / Device Role / Timing Role: Low-noise voltage clamp preventing overvoltage damage to GaN FET gate drivers during startup sequencing. Use Value: 90 Ω Zener impedance ensures <15 mV ripple under 10 mA load steps, preserving display contrast uniformity. |
Use Scenario: Generating stable bias voltage for GaAs pHEMT amplifiers in mmWave active antenna units. IC Role / Device Role / Timing Role: Low-capacitance (70 pF) shunt regulator minimizing RF signal path loading at 28 GHz. Use Value: 70 pF capacitance at 0 V bias avoids detuning matching networks, preserving PA efficiency above 25 dBm. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B36,115 | 36 V ±5%, 300 mW, SOD-323, but only JEDEC JESD22-A114 qualified (not AEC−Q101); 100 Ω ZZT max | Lacks automotive qualification and has higher dynamic impedance - suitable for consumer-grade power supplies only | Select when cost sensitivity outweighs automotive reliability requirements and tighter impedance is not needed |
| MMSZ5241B-TP | 36 V ±5%, 500 mW, SOD-123, larger footprint (3.5 mm × 1.6 mm), 100 Ω ZZT, no AEC−Q101 | Higher power rating but incompatible SOD-123 land pattern - requires PCB redesign | Choose only if thermal budget exceeds 300 mW and board area permits larger package |
Compared with BZX384-B36,115 and MMSZ5241B-TP, the SZMM3Z36VT1G uniquely combines AEC−Q101 qualification, SOD−323 miniaturization, and 90 Ω low-impedance regulation - making it the sole option for space-constrained automotive modules requiring production traceability and PPAP compliance.
Availability
SZMM3Z36VT1G is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor interfaces, portable medical monitors, and 5G RF front-end designs requiring stable component supply with full lifecycle traceability and long-term obsolescence management.
Supply support for SZMM3Z36VT1G 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 (Nasdaq: ON) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The SZMM3ZxxxT1G series is part of onsemi's automotive-qualified Zener regulator portfolio, engineered specifically for AEC−Q101 compliance, high-reliability PCB mounting, and space-constrained voltage reference needs in safety-critical subsystems.
FAQ
What is the Zener voltage tolerance of SZMM3Z36VT1G?
The SZMM3Z36VT1G has a nominal Zener voltage of 36 V with a tolerance of ±5.6%, corresponding to a minimum of 34 V and maximum of 38 V at 2 mA test current (IZT). This tolerance is specified in the Electrical Characteristics table on page 2 of the official datasheet and applies under standard 25°C ambient conditions.
Is SZMM3Z36VT1G qualified for automotive applications?
Yes, SZMM3Z36VT1G is AEC−Q101 qualified and PPAP capable, as explicitly stated in the "Specification Features" section of the datasheet. The "SZ" prefix denotes automotive-grade manufacturing controls, including unique site and change management requirements required for Tier 1 automotive supply chains.
What is the maximum reverse leakage current for SZMM3Z36VT1G?
The maximum reverse leakage current (IR) for SZMM3Z36VT1G is 0.05 µA at a reverse voltage (VR) of 25.2 V, as confirmed in the Electrical Characteristics table. This value is measured at 25°C ambient and defines the upper bound of standby current draw in precision reference circuits.
Does SZMM3Z36VT1G have Pb−free packaging?
Yes, SZMM3Z36VT1G uses Pb−free packaging with Sn-only or Pb−Sn plating, as documented in the Mechanical Characteristics section and ordering information. It complies with RoHS Directive 2011/65/EU and is marked with the "G" suffix indicating Pb−free construction per onsemi's packaging standards.
What is the thermal resistance (RJA) of SZMM3Z36VT1G?
The thermal resistance from junction-to-ambient (RJA) for SZMM3Z36VT1G is 416 °C/W, measured on an FR-4 board with single-sided copper and a 1 cm² mounting pad. This value is specified in the Maximum Ratings table and determines allowable power dissipation before exceeding the 150°C maximum junction temperature.
SZMM3Z36VT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 36 V
- Tolerance:
- ±5%
- Power - Max:
- 300 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
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
SZMM3Z36VT1G FAQ
1.How can I place an order for SZMM3Z36VT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM3Z36VT1G 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 SZMM3Z36VT1G reliable?
The price and inventory of SZMM3Z36VT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM3Z36VT1G is usually 5 days.
3.What payment methods are accepted for SZMM3Z36VT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM3Z36VT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM3Z36VT1G?
SZMM3Z36VT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM3Z36VT1G 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 SZMM3Z36VT1G?
For technical support, including SZMM3Z36VT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM3Z36VT1G requirements.
6.How does Aetrix verify that SZMM3Z36VT1G is sourced from the original manufacturer or authorized distributors?
All SZMM3Z36VT1G 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 SZMM3Z36VT1G meets industry standards.
7.What is the process for return or replacement of SZMM3Z36VT1G?
All SZMM3Z36VT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM3Z36VT1G, 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 SZMM3Z36VT1G part is unused and in its original packaging.
Return procedure for SZMM3Z36VT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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