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onsemi SZMM5Z9V1T5G
- Part No.:
- SZMM5Z9V1T5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
SZMM5Z9V1T5G.pdf
- Description:
- DIODE ZENER 9.1V 500MW SOD523
- Quantity:
- Payment:
- Shipping:
Inventory:6,430
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Product details
Overview
SZMM5Z9V1T5G from onsemi is a 9.1 V ±5% Zener diode in SOD-523 package, rated for 500 mW steady-state power dissipation at 25 °C, with 15 Ω max Zener impedance at 5 mA test current and 0.2 μA reverse leakage at 7.0 V. It provides precision voltage regulation and overvoltage clamping in space-constrained portable electronics.
For engineers reviewing the SZMM5Z9V1T5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), low-profile SOD-523 footprint (1.20 mm × 0.80 mm), AEC-Q101 qualification, 16 kV HBM ESD rating, and thermal resistance of 250 °C/W.
Technical Context
This device operates as a two-terminal voltage reference and transient clamp, leveraging silicon PN junction breakdown characteristics. Its 9.1 V nominal Zener voltage is specified at IZT = 5 mA with ±5% tolerance, and it maintains stable regulation across −65 °C to +150 °C junction temperature range.
The SOD-523 package enables high-density PCB layout with minimal board area and low profile (0.7 mm height). Thermal derating follows a linear 4.0 mW/°C reduction above 25 °C ambient, supported by a 250 °C/W junction-to-ambient thermal resistance on FR-4 board.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.1 V nominal, 8.5–9.6 V min/max at IZT = 5 mA - defines precise clamping threshold for protection circuits |
| Power Rating (PD) | 500 mW at TA = 25 °C - sets maximum continuous dissipation before thermal derating applies |
| Zener Impedance (ZZT) | 15 Ω max at IZT = 5 mA - ensures tight voltage regulation under dynamic load changes |
| Reverse Leakage (IR) | 0.2 μA max at VR = 7.0 V - guarantees minimal standby current in battery-powered systems |
| ESD Rating | Class 3 (>16 kV) per HBM - enables robust handling in automated assembly and end-use environments |
| Temperature Range | −65 °C to +150 °C (TJ/Tstg) - supports operation in automotive under-hood and industrial control applications |
| Package | SOD-523 (Case 502) - 1.20 mm × 0.80 mm × 0.70 mm footprint ideal for ultra-compact PCBs |
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 rated for 260 °C reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased during Zener operation |
| 2 (Unbanded End) | Anode | Connected to ground or lower-potential rail; completes bias path for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications including engine control modules and infotainment power rails |
| Pb-Free & RoHS Compliant | Meets global environmental regulations without compromising solderability or reliability |
| Low Capacitance (130 pF) | Minimizes signal distortion in high-frequency clamping applications such as USB or audio line protection |
| High ESD Robustness (16 kV HBM) | Eliminates need for external ESD suppressors in handheld device interfaces |
| Stable Tempco (3.8 mV/°C) | Ensures predictable voltage drift over operating temperature range in precision references |
Applications
| Smartphone Power Rail Protection | Automotive Body Control Module |
|---|---|
|
Use Scenario: Clamping transient spikes on 9 V supply lines feeding camera modules and sensors in smartphones. IC Role / Device Role / Timing Role: Two-terminal shunt regulator providing overvoltage protection for downstream LDOs and analog ICs. Use Value: Prevents latch-up or damage to 9 V-tolerant components during ESD events or load dump transients. |
Use Scenario: Stabilizing reference voltage for microcontroller ADC inputs monitoring 12 V battery voltage in BCMs. IC Role / Device Role / Timing Role: Precision Zener reference source enabling accurate battery state-of-charge estimation. Use Value: Delivers ±5% voltage accuracy over −40 °C to +125 °C, meeting AEC-Q100 Grade 2 requirements. |
| Industrial Sensor Signal Conditioning | Wearable Health Monitor Biasing |
|
Use Scenario: Providing stable 9.1 V bias for op-amp gain stages in pressure sensor front-ends. IC Role / Device Role / Timing Role: Low-noise voltage reference ensuring consistent amplifier gain and offset calibration. Use Value: 15 Ω Zener impedance minimizes output variation under varying sensor excitation currents. |
Use Scenario: Regulating voltage for optical heart-rate sensor LEDs in compact wearable devices. IC Role / Device Role / Timing Role: Compact shunt regulator maintaining LED forward voltage despite battery discharge. Use Value: SOD-523 footprint saves >60% board area vs. SOD-323, critical for sub-20 mm² wearable PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C9V1 | 9.1 V ±5%, SOD-523, 300 mW PD, 20 Ω ZZT | Lower power rating limits use in sustained overvoltage conditions | Select when thermal budget is constrained and peak clamping duty cycle is low |
| MMSZ5240BT1G | 9.1 V ±5%, SOD-123, 500 mW PD, 15 Ω ZZT, but 2.5 mm × 1.3 mm footprint | Larger package increases PCB area by 3.3× vs. SOD-523 | Choose only if existing layout uses SOD-123 or requires higher mechanical robustness |
Compared with BZX584C9V1 and MMSZ5240BT1G, SZMM5Z9V1T5G uniquely combines AEC-Q101 qualification, 16 kV HBM ESD rating, and minimal 1.20 mm × 0.80 mm footprint while delivering identical 9.1 V regulation and 500 mW capability - making it optimal for next-gen automotive and portable designs where size, reliability, and qualification converge.
Availability
SZMM5Z9V1T5G is available at Aetrix Electronics and suitable for smartphone power rail protection, automotive body control modules, and industrial sensor signal conditioning requiring stable component supply, long-term lifecycle support, and AEC-Q101 compliance.
Supply support for SZMM5Z9V1T5G 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, serving automotive, industrial, cloud, and consumer markets with discrete, analog, and logic solutions.
SZMM5Z9V1T5G belongs to the MM5Zxxx/SZMM5Zxxx series of miniature Zener regulators designed specifically for high-density portable and automotive electronics where space, reliability, and qualification are critical.
FAQ
What is the Zener voltage tolerance of SZMM5Z9V1T5G?
The SZMM5Z9V1T5G has a nominal Zener voltage of 9.1 V with a standard tolerance of ±5%, meaning its actual breakdown voltage falls between 8.5 V and 9.6 V when tested at IZT = 5 mA and TA = 25 °C. This tolerance is confirmed in the Electrical Characteristics table on page 3 of the onsemi datasheet MM5Z2V4T1/D Rev. 19.
Is SZMM5Z9V1T5G qualified for automotive applications?
Yes, SZMM5Z9V1T5G 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, and the device meets stress testing requirements for automotive under-hood and cabin environments.
What is the maximum power dissipation for SZMM5Z9V1T5G at 85 °C ambient?
At 85 °C ambient, SZMM5Z9V1T5G's power dissipation must be derated linearly from 500 mW at 25 °C using the 4.0 mW/°C derating factor. So: 500 mW − (85 − 25) × 4.0 mW = 500 − 240 = 260 mW maximum continuous dissipation, verified in the Maximum Ratings table.
Does SZMM5Z9V1T5G have a defined cathode marking?
Yes, SZMM5Z9V1T5G uses Style 1 marking per the Mechanical Case Outline diagram: Pin 1 (cathode) is identified by a polarity band on the SOD-523 package body. This matches the generic marking diagram on page 1 of the datasheet and is consistent across all MM5ZxxxT5G-series devices.
What is the reverse leakage current specification for SZMM5Z9V1T5G?
SZMM5Z9V1T5G specifies a maximum reverse leakage current (IR) of 0.2 μA at VR = 7.0 V and TA = 25 °C, as listed in the Electrical Characteristics table on page 3. This low leakage supports extended battery life in always-on portable applications.
SZMM5Z9V1T5G 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):
- 9.1 V
- Tolerance:
- ±6.04%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 200 nA @ 7 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
SZMM5Z9V1T5G FAQ
1.How can I place an order for SZMM5Z9V1T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMM5Z9V1T5G 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 SZMM5Z9V1T5G reliable?
The price and inventory of SZMM5Z9V1T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMM5Z9V1T5G is usually 5 days.
3.What payment methods are accepted for SZMM5Z9V1T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMM5Z9V1T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMM5Z9V1T5G?
SZMM5Z9V1T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMM5Z9V1T5G 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 SZMM5Z9V1T5G?
For technical support, including SZMM5Z9V1T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMM5Z9V1T5G requirements.
6.How does Aetrix verify that SZMM5Z9V1T5G is sourced from the original manufacturer or authorized distributors?
All SZMM5Z9V1T5G 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 SZMM5Z9V1T5G meets industry standards.
7.What is the process for return or replacement of SZMM5Z9V1T5G?
All SZMM5Z9V1T5G units undergo pre-shipment inspection (PSI). If there is an issue with SZMM5Z9V1T5G, 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 SZMM5Z9V1T5G part is unused and in its original packaging.
Return procedure for SZMM5Z9V1T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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