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onsemi SZMMSZ5272BT1G
- Part No.:
- SZMMSZ5272BT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
SZMMSZ5272BT1G.pdf
- Description:
- DIODE ZENER 110V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:10,630
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Product details
Overview
SZMMSZ5272BT1G from onsemi is a 110 V ±5% Zener diode in SOD−123 package, rated for 500 mW power dissipation at TL = 75°C, with 1.1 mA test current (IZT), 3000 Ω dynamic impedance (ZZT), and 0.1 μA reverse leakage at 84 V (VR). It serves as a precision voltage reference or overvoltage clamp in automotive power supply monitoring circuits.
For engineers reviewing the SZMMSZ5272BT1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, thermal equilibrium operation, AEC−Q101 qualification, SOD−123 footprint compatibility, and high-voltage clamping capability up to 115.5 V.
Technical Context
This device operates under thermal equilibrium conditions at TL = 30°C ±1°C for nominal Zener voltage measurement, ensuring stable regulation across temperature. Its 3000 Ω Zener impedance at IZT = 1.1 mA reflects higher dynamic resistance typical of high-voltage Zeners above 100 V, limiting low-noise reference use but supporting robust transient suppression.
The SOD−123 package enables automated assembly and delivers 150 °C/W junction-to-lead thermal resistance, allowing effective heat transfer to PCB copper. With AEC−Q101 qualification and Class 3 ESD rating (>16 kV HBM), it meets automotive reliability requirements without derating for board-level surge immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 104.5–115.5 V @ IZT = 1.1 mA - defines clamping threshold range for overvoltage protection in 96 V battery systems. |
| Power Dissipation (PD) | 500 mW on FR−5 board @ TL = 75°C - sets maximum continuous power handling before thermal derating begins. |
| Zener Impedance (ZZT) | 3000 Ω @ IZT - indicates voltage regulation sensitivity; higher impedance limits precision reference use but supports coarse clamping. |
| Reverse Leakage (IR) | 0.1 μA @ VR = 84 V - ensures minimal standby current in high-impedance sensing nodes. |
| Junction Temp Range | −55 °C to +150 °C - enables operation in under-hood automotive environments without external heatsinking. |
| ESD Rating | Class 3 (>16 kV HBM) - provides robust handling during automated PCB assembly and field service. |
Pinout & Package
SOD−123 surface-mount plastic package (1.60 × 2.69 × 1.16 mm), void-free thermosetting case with corrosion-resistant finish, cathode indicated by polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener voltage reference node | Connected to regulated rail or protected input; reverse-biased operation requires this terminal at higher potential than anode. |
| 2 (Anode) | Reference ground / return path | Typically tied to system ground or low-side bias point; completes Zener conduction path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC−Q101 qualified | Validated for automotive applications including engine control modules and battery management systems requiring PPAP documentation. |
| Pb−Free SOD−123 package | Complies with RoHS and ELV directives; compatible with standard reflow profiles up to 260°C for 10 seconds. |
| Thermal equilibrium Zener spec | Ensures repeatable voltage calibration at TL = 30°C ±1°C, critical for production test consistency in high-volume automotive lines. |
| High-voltage clamping | Stable 110 V nominal regulation supports 96 V DC bus protection against load dump transients per ISO 7637−2. |
Applications
| Automotive Load Dump Protection | Industrial Power Rail Monitoring |
|---|---|
Use Scenario: Protecting microcontrollers and CAN transceivers from ISO 7637−2 Pulse 5a load dump transients in 24 V/48 V commercial vehicle systems. IC Role / Device Role / Timing Role: Voltage-clamping element placed across main power rail to shunt excess energy into ground during 120 V, 400 ms transients. Use Value: Clamps peak voltage to ≤115.5 V while sustaining 500 mW dissipation, preventing damage to downstream 120 V-rated ICs without requiring active crowbar circuitry. | Use Scenario: Monitoring high-voltage DC link in industrial motor drives where bus voltage exceeds 80 V and must be held within safe operating margins. IC Role / Device Role / Timing Role: Reference node for comparator-based overvoltage detection circuit, triggering shutdown before rail exceeds 115 V. Use Value: Provides stable 110 V reference with ±5% tolerance and <0.1 μA leakage at 84 V, minimizing false triggers in high-impedance sense networks. |
| Telecom Power Supply Clamp | Energy Meter Voltage Reference |
Use Scenario: Secondary-side overvoltage protection in telecom rectifier modules supplying −48 V DC systems with backup battery float charging. IC Role / Device Role / Timing Role: Standby clamping diode connected between output and ground, activated only during fault conditions exceeding 110 V. Use Value: Delivers reliable clamping at 110 V with 3000 Ω dynamic impedance, reducing stress on primary-side MOSFETs during sustained overvoltage events. | Use Scenario: Precision voltage scaling network in Class 0.2 smart electricity meters measuring 100–120 V AC mains via resistive divider. IC Role / Device Role / Timing Role: Temperature-stable Zener reference stabilizing ADC reference voltage derived from scaled mains input. Use Value: Maintains ±5% Zener tolerance across −40°C to +85°C ambient, enabling accurate RMS voltage measurement without trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5272BT1G | No AEC−Q101 qualification; same electrical specs and SOD−123 package. | Not approved for automotive production; suitable for industrial or telecom prototypes. | Select when automotive PPAP or site-controlled manufacturing is not required. |
| SZMMBZ5272ET1G | Same 110 V Zener voltage but in SOT−23 package; 350 mW rating; different thermal resistance (RJA = 400 °C/W). | Limited power handling and higher thermal resistance reduce suitability for sustained 110 V clamping in high-ambient environments. | Choose only if board space constraints prohibit SOD−123 and transient duration is short. |
Compared with MMSZ5272BT1G and SZMMBZ5272ET1G, SZMMSZ5272BT1G uniquely combines AEC−Q101 qualification, 500 mW SOD−123 power rating, and thermal equilibrium voltage specification-making it the sole option for production automotive systems requiring validated reliability and thermal stability at 110 V.
Availability
SZMMSZ5272BT1G is available at Aetrix Electronics and suitable for automotive electronics, industrial power monitoring, telecom rectifier protection, and smart metering applications requiring stable component supply and long-term lifecycle support.
Supply support for SZMMSZ5272BT1G 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 MMSZ52xxxT1G/SZMMSZ52xxxT1G series was designed specifically for cost-sensitive, high-reliability voltage regulation in automotive and industrial surface-mount systems requiring AEC−Q101 compliance and thermal equilibrium performance validation.
FAQ
What is the Zener voltage tolerance for SZMMSZ5272BT1G?
The SZMMSZ5272BT1G has a ±5% Zener voltage tolerance, meaning its reverse breakdown voltage ranges from 104.5 V to 115.5 V when measured at IZT = 1.1 mA under thermal equilibrium conditions (TL = 30°C ±1°C). This tolerance is confirmed in the "5% TOLERANCE FG ELECTRICAL CHARACTERISTICS" table on page 3 of the official onsemi datasheet for SZMMSZ5272BT1G.
Is SZMMSZ5272BT1G qualified for automotive applications?
Yes, SZMMSZ5272BT1G is AEC−Q101 qualified and PPAP capable, as explicitly stated in the "Features" section of the onsemi datasheet. The "SZ" prefix denotes automotive-grade manufacturing controls, and the device meets stress testing requirements for temperature cycling, humidity, and mechanical shock-making SZMMSZ5272BT1G suitable for under-hood and chassis-mounted automotive electronics.
What is the maximum power dissipation of SZMMSZ5272BT1G on a standard PCB?
SZMMSZ5272BT1G is rated for 500 mW total power dissipation on an FR−5 board at TL = 75°C, with linear derating of 6.7 mW/°C above that temperature. This value assumes minimum recommended footprint per onsemi's SOD−123 layout guidelines and is validated using infrared scan methodology, as specified in the "MAXIMUM RATINGS" table of the SZMMSZ5272BT1G datasheet.
Does SZMMSZ5272BT1G have a Pb−Free package?
Yes, SZMMSZ5272BT1G uses a Pb−Free SOD−123 package, confirmed by the "Pb−Free" designation in the ordering information table and the "These are Pb−Free Devices" feature bullet. The device complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level (MSL) requirements, and its soldering profile supports peak temperatures up to 260°C for 10 seconds.
What is the reverse leakage current specification for SZMMSZ5272BT1G?
The reverse leakage current for SZMMSZ5272BT1G is 0.1 μA maximum at VR = 84 V, as listed in the "5% TOLERANCE FG ELECTRICAL CHARACTERISTICS" table on page 3 of the datasheet. This low leakage ensures minimal parasitic current draw in high-impedance voltage monitoring circuits and supports accurate overvoltage detection in battery management and power supply supervision applications.
SZMMSZ5272BT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZMMSZ52xxxT1G
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 110 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 750 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 84 V
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
SZMMSZ5272BT1G FAQ
1.How can I place an order for SZMMSZ5272BT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMMSZ5272BT1G 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 SZMMSZ5272BT1G reliable?
The price and inventory of SZMMSZ5272BT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ5272BT1G is usually 5 days.
3.What payment methods are accepted for SZMMSZ5272BT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ5272BT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMMSZ5272BT1G?
SZMMSZ5272BT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMMSZ5272BT1G 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 SZMMSZ5272BT1G?
For technical support, including SZMMSZ5272BT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ5272BT1G requirements.
6.How does Aetrix verify that SZMMSZ5272BT1G is sourced from the original manufacturer or authorized distributors?
All SZMMSZ5272BT1G 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 SZMMSZ5272BT1G meets industry standards.
7.What is the process for return or replacement of SZMMSZ5272BT1G?
All SZMMSZ5272BT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ5272BT1G, 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 SZMMSZ5272BT1G part is unused and in its original packaging.
Return procedure for SZMMSZ5272BT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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