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onsemi SZMM3Z3V6T1G
- Part No.:
- SZMM3Z3V6T1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
SZMM3Z3V6T1G.pdf
- Description:
- DIODE ZENER 3.6V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:6,519
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Product details
Overview
SZMM3Z3V6T1G from onsemi is a 3.6 V ±5% 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 5 mA test current and 5 µA maximum leakage current at 1.0 V reverse bias - used for precision voltage reference and overvoltage protection in space-constrained portable electronics.
For engineers reviewing the SZMM3Z3V6T1G datasheet, pinout, applications, or equivalent options, key selection factors include its 3.4–3.8 V nominal Zener range, AEC−Q101 qualification, Pb−free SOD−323 footprint, −65°C to +150°C operating temperature, and Class 3 ESD rating (>16 kV HBM).
Technical Context
This device operates as a two-terminal voltage reference by maintaining a stable reverse breakdown voltage across its cathode-anode junction under controlled current conditions. Its low 90 Ω Zener impedance at 5 mA ensures minimal voltage variation with load changes, while the 0.9 mm body height supports ultra-thin PCB designs.
The SZ prefix confirms automotive-grade qualification per AEC−Q101, including PPAP capability and site-specific process controls. Thermal resistance of 416°C/W (Junction-to-Ambient) and 2.4 mW/°C derating above 25°C define its thermal management envelope on FR-4 boards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.4 V min / 3.6 V nom / 3.8 V max @ IZT = 5 mA - defines tight regulation window for low-voltage rail clamping |
| Power Dissipation (PD) | 300 mW @ TA = 25°C - sets maximum continuous power handling on standard FR-4 board |
| Zener Impedance (ZZT) | 90 Ω max @ IZT = 5 mA - indicates low AC voltage variation during transient load shifts |
| Leakage Current (IR) | 5 µA max @ VR = 1.0 V - ensures minimal standby current draw in battery-powered systems |
| ESD Rating | Class 3 (>16 kV) per Human Body Model - provides robust handling tolerance without external protection |
| Operating Temperature | −65°C to +150°C - supports extended-range industrial and automotive under-hood applications |
| Capacitance | 450 pF max @ VR = 0 V, f = 1 MHz - limits high-frequency noise coupling in signal-path references |
Pinout & Package
SZMM3Z3V6T1G uses the SOD−323 surface-mount plastic package (Case 477, Style 1), measuring 1.7 mm × 1.25 mm × 0.9 mm with cathode polarity indicated by a band. Mounting is orientation-agnostic and compatible with standard reflow profiles (260°C for 10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Non-banded End) | Anode | Connected to ground or lower-potential reference; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC−Q101 Qualified | Validated for automotive use with PPAP documentation support and controlled manufacturing site requirements |
| Pb−Free Construction | RoHS-compliant Sn-only or Pb−Sn plating; meets global environmental compliance mandates |
| Low Profile (0.9 mm) | Enables stacking or shielding in ultra-thin handheld devices like wearables and hearing aids |
| UL 94 V−0 Rated | Self-extinguishing plastic housing reduces fire risk in densely populated consumer PCBs |
| High ESD Robustness | Withstands >16 kV HBM without parameter shift - eliminates need for discrete ESD protection in many layouts |
Applications
| Smartphone Power Rail Protection | Automotive Cabin Controller Reference |
|---|---|
Use Scenario: Clamping 3.3 V I/O supply against ESD transients and load-dump spikes in LTE modem modules. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing passive overvoltage clamp at system power entry point. Use Value: Prevents damage to downstream PMICs and baseband ICs using only 3.6 V Zener threshold and 5 µA leakage. |
Use Scenario: Generating stable 3.6 V reference for ADC input scaling in HVAC control units exposed to wide ambient temperatures. IC Role / Device Role / Timing Role: Precision voltage reference source with <±5% tolerance and −65°C to +150°C operation. Use Value: Maintains ADC accuracy across vehicle lifetime without active regulation or trimming components. |
| Wearable Battery Monitor Circuit | Industrial Sensor Signal Conditioning |
Use Scenario: Biasing low-power op-amps in heart-rate sensor front-ends powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Low-current Zener reference supplying stable bias for analog signal chain components. Use Value: Delivers 3.6 V reference with 90 Ω impedance and 450 pF capacitance - minimizing noise injection into sensitive bio-amplifiers. |
Use Scenario: Providing excitation voltage for resistive bridge sensors in factory automation pressure transmitters. IC Role / Device Role / Timing Role: Fixed-voltage shunt regulator establishing precise excitation potential independent of supply ripple. Use Value: Enables <0.1% full-scale error in bridge measurements via tight 3.4–3.8 V Zener tolerance and low tempco (−3.5 mV/°C). |
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-B3V6,115 (Nexperia) | Same 3.6 V nominal Zener, 300 mW rating, SOD-323 package, but 100 Ω ZZT max vs. 90 Ω for SZMM3Z3V6T1G | Lacks AEC−Q101 qualification; rated only for commercial temperature range (−65°C to +150°C not guaranteed) | Select when automotive qualification is unnecessary and cost sensitivity outweighs 10 Ω Zener impedance advantage |
| MMSZ4685T1G (onsemi) | 3.6 V Zener, same SOD-323 package, but 500 mW PD, higher 120 Ω ZZT, and no AEC−Q101 designation | Higher power rating enables use in higher-current clamp circuits, but lacks automotive traceability and PPAP support | Select when thermal margin is critical and automotive compliance is not required |
Compared with BZX384-B3V6,115 and MMSZ4685T1G, SZMM3Z3V6T1G offers tighter Zener impedance, guaranteed automotive qualification, and lower leakage - making it optimal for safety-critical or space-constrained automotive and medical portable designs where reliability and footprint are prioritized over raw power headroom.
Availability
SZMM3Z3V6T1G is available at Aetrix Electronics and suitable for smartphone power rail protection, automotive cabin controller reference, and wearable battery monitor circuit applications requiring stable component supply, long-term lifecycle assurance, and AEC−Q101 compliance.
Supply support for SZMM3Z3V6T1G 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT markets.
SZMM3Z3V6T1G belongs to the MM3ZxxxT1G/SZMM3ZxxxT1G Zener regulator family, designed specifically for compact, high-reliability voltage reference and overvoltage protection in portable and automotive electronics.
FAQ
What is the Zener voltage tolerance of SZMM3Z3V6T1G?
The SZMM3Z3V6T1G has a Zener voltage range of 3.4 V (minimum) to 3.8 V (maximum) at 5 mA test current, corresponding to a nominal 3.6 V with ±5.6% total tolerance. This specification is measured at 25°C ambient and applies across the full operating temperature range per the device's published electrical characteristics table.
Is SZMM3Z3V6T1G qualified for automotive applications?
Yes, SZMM3Z3V6T1G carries the "SZ" prefix indicating full AEC−Q101 qualification, including stress testing, process controls, and PPAP documentation capability. It is explicitly rated for automotive use with guaranteed performance from −65°C to +150°C and Class 3 ESD robustness (>16 kV HBM).
What is the thermal derating behavior of SZMM3Z3V6T1G above 25°C?
SZMM3Z3V6T1G derates linearly at 2.4 mW/°C above 25°C ambient temperature on an FR-4 board with 1 cm² copper pad. At 85°C ambient, its usable power dissipation drops to approximately 156 mW (300 mW − (85 − 25) × 2.4 mW), requiring careful thermal design in enclosed or high-temperature environments.
Does SZMM3Z3V6T1G have lead-free construction?
Yes, SZMM3Z3V6T1G is Pb−free per RoHS Directive 2011/65/EU, with terminations plated in pure tin (Sn) or Sn/Pb alloy depending on manufacturing lot. The "G" suffix in the part number denotes Pb−free packaging, and the device complies with JEDEC J-STD-020 moisture sensitivity level 1 (unlimited floor life at ≤30°C/85% RH).
What is the maximum reverse leakage current for SZMM3Z3V6T1G?
The maximum reverse leakage current for SZMM3Z3V6T1G is 5 µA at 1.0 V reverse bias (VR) and 25°C ambient temperature. This value remains within specification across the full −65°C to +150°C operating range, supporting ultra-low-power applications such as battery-backed sensor nodes.
SZMM3Z3V6T1G 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):
- 3.6 V
- Tolerance:
- ±6%
- Power - Max:
- 300 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-323
SZMM3Z3V6T1G FAQ
1.How can I place an order for SZMM3Z3V6T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM3Z3V6T1G 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 SZMM3Z3V6T1G reliable?
The price and inventory of SZMM3Z3V6T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM3Z3V6T1G is usually 5 days.
3.What payment methods are accepted for SZMM3Z3V6T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM3Z3V6T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM3Z3V6T1G?
SZMM3Z3V6T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM3Z3V6T1G 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 SZMM3Z3V6T1G?
For technical support, including SZMM3Z3V6T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM3Z3V6T1G requirements.
6.How does Aetrix verify that SZMM3Z3V6T1G is sourced from the original manufacturer or authorized distributors?
All SZMM3Z3V6T1G 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 SZMM3Z3V6T1G meets industry standards.
7.What is the process for return or replacement of SZMM3Z3V6T1G?
All SZMM3Z3V6T1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM3Z3V6T1G, 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 SZMM3Z3V6T1G part is unused and in its original packaging.
Return procedure for SZMM3Z3V6T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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