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onsemi SZMMSZ5241BT1G
- Part No.:
- SZMMSZ5241BT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
SZMMSZ5241BT1G.pdf
- Description:
- DIODE ZENER 11V 500MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:7,039
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Product details
Overview
SZMMSZ5241BT1G from onsemi is a 500 mW, ±5% tolerance Zener diode in SOD−123 package with nominal reverse breakdown voltage of 11.0 V at 20 mA test current, 600 Ω dynamic impedance at IZT, and 2 µA maximum leakage current at 8.4 V reverse bias - used for precision voltage regulation and reference in low-power analog circuits.
For engineers reviewing the SZMMSZ5241BT1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance, thermal equilibrium performance, junction-to-ambient thermal resistance (340 °C/W), and AEC−Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse bias above its specified Zener voltage (10.45–11.55 V) with stable regulation under thermal equilibrium conditions (TL = 30°C ±1°C). It exhibits a positive temperature coefficient near 11 V, typical of mid-voltage Zeners in this series.
Designed for surface-mount assembly on FR−4/FR−5 PCBs, it delivers 500 mW power dissipation at TL = 75°C with linear derating (6.7 mW/°C above 75°C) and supports ESD robustness >16 kV per HBM Class 3 - critical for production environments requiring high-reliability passive protection and biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.45–11.55 V @ IZT = 20 mA - defines precise clamping threshold for overvoltage protection or reference generation |
| Power Dissipation (PD) | 500 mW on FR−5 board @ TL = 75°C - sets maximum continuous DC power handling without thermal runaway |
| Zener Impedance (ZZT) | 600 Ω @ IZT = 20 mA - determines output voltage stability under load transients |
| Leakage Current (IR) | 2 µA max @ VR = 8.4 V - ensures minimal standby current in battery-powered bias networks |
| Thermal Resistance (RJA) | 340 °C/W - quantifies junction-to-ambient heat transfer efficiency on standard PCB layout |
| Junction Temp Range | −55°C to +150°C - enables operation in automotive engine compartments and industrial control enclosures |
| AEC−Q101 Qualified | Yes - confirms stress-tested reliability for automotive electronics per JEDEC standards |
Pinout & Package
SOD−123 surface-mount plastic package (1.60 × 2.69 × 1.16 mm), void-free thermosetting case with cathode indicated by polarity band; rated for 260°C soldering (10 s).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-bias anode connection point | Connected to regulated voltage node; polarity band identifies this terminal for correct PCB orientation |
| 2 (Anode) | Reverse-bias cathode connection point | Typically tied to ground or lower potential rail; completes Zener conduction path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| 500 mW Power Rating | Enables stable voltage reference in space-constrained, medium-current applications without external heatsinking |
| ±5% Zener Tolerance | Supports cost-sensitive designs where tighter tolerance is unnecessary, balancing accuracy and BOM cost |
| ESD Robustness >16 kV (HBM) | Reduces need for supplemental ESD protection in final assembly, lowering system-level component count |
| AEC−Q101 Qualification | Validates suitability for automotive infotainment, body control modules, and ADAS sensor biasing without requalification |
| Pb-Free Construction | Meets RoHS Directive 2011/65/EU and J-STD-609 Category 3 moisture sensitivity requirements |
Applications
| Automotive Sensor Biasing | Industrial Analog Reference |
|---|---|
Use Scenario: Providing stable 11 V reference for Hall-effect position sensors in engine control units. IC Role / Device Role / Timing Role: Zener voltage reference supplying excitation voltage to sensor ICs. Use Value: Maintains sensor linearity across −40°C to +125°C ambient due to AEC−Q101 validation and thermal equilibrium specification. |
Use Scenario: Generating precision bias voltage for op-amp input stages in programmable logic controllers. IC Role / Device Role / Timing Role: Passive voltage regulator establishing fixed common-mode level for signal conditioning circuitry. Use Value: Delivers <2 µA leakage at 8.4 V, minimizing offset drift in high-impedance feedback networks. |
| Consumer Power Supply Clamp | Medical Instrument Protection |
Use Scenario: Clamping transient spikes on 12 V rail in smart home hubs during hot-plug events. IC Role / Device Role / Timing Role: Overvoltage protection element shunting excess energy to ground. Use Value: Responds within nanoseconds to surges up to 100 W (non-repetitive), verified per Figure 4 pulse rating curves. |
Use Scenario: Protecting ADC input pins in portable ECG monitors from ESD and supply rail faults. IC Role / Device Role / Timing Role: Front-end transient suppressor limiting voltage excursion to safe levels. Use Value: Withstands >16 kV HBM ESD and operates reliably from −55°C to +150°C, meeting IEC 60601-1 environmental requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ5241BT1G | No SZ prefix; commercial grade (non-AEC−Q101); identical electrical specs and SOD−123 package | Not qualified for automotive use; suitable for consumer and industrial non-safety-critical systems | Select when AEC−Q101 compliance is not required and cost optimization is prioritized |
| SZMMSZ5242BT1G | Higher nominal Zener voltage (12.0 V); same ±5% tolerance, 600 Ω ZZT, and AEC−Q101 qualification | Used where 12 V regulation is needed instead of 11 V - e.g., CAN transceiver bias or 12 V LDO feedback | Choose for 12 V reference applications requiring identical automotive qualification and thermal performance |
Compared with MMSZ5241BT1G, SZMMSZ5241BT1G adds AEC−Q101 qualification and site-controlled traceability for automotive programs, while SZMMSZ5242BT1G shifts regulation to 12 V with no compromise in surge capability or thermal derating behavior.
Availability
SZMMSZ5241BT1G is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial analog reference design, and medical instrument protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SZMMSZ5241BT1G 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.
SZMMSZ52xxxT1G series is part of onsemi's automotive-qualified Zener portfolio, engineered for stable voltage reference and overvoltage protection in harsh-environment electronics where reliability and regulatory compliance are mandatory.
FAQ
What is the Zener voltage tolerance of SZMMSZ5241BT1G?
SZMMSZ5241BT1G has a ±5% tolerance on its nominal Zener voltage of 11.0 V, meaning the actual measured VZ falls between 10.45 V and 11.55 V at IZT = 20 mA under thermal equilibrium conditions. This tolerance is confirmed in the "5% TOLERANCE FG ELECTRICAL CHARACTERISTICS" table on page 3 of the official onsemi datasheet.
Is SZMMSZ5241BT1G qualified for automotive applications?
Yes, SZMMSZ5241BT1G is AEC−Q101 qualified and PPAP capable, as explicitly stated in the Features section of the onsemi datasheet. The "SZ" prefix denotes automotive and other applications requiring unique site and control change requirements - making SZMMSZ5241BT1G suitable for engine control units, body electronics, and ADAS subsystems.
What is the maximum leakage current for SZMMSZ5241BT1G and at what voltage is it specified?
The maximum reverse leakage current for SZMMSZ5241BT1G is 2 µA, specified at a reverse voltage (VR) of 8.4 V. This value is listed in the "5% TOLERANCE FG ELECTRICAL CHARACTERISTICS" table on page 3 and reflects worst-case off-state conduction relevant for low-power bias networks.
What package type does SZMMSZ5241BT1G use and what are its key mechanical dimensions?
SZMMSZ5241BT1G uses the SOD−123 surface-mount package (Case 425, Style 1), measuring 1.60 mm × 2.69 mm × 1.16 mm. Its cathode is marked by a polarity band, and it is rated for 260°C soldering for 10 seconds - details confirmed in the Mechanical Characteristics and Package Dimensions sections of the onsemi datasheet.
How does the thermal derating of SZMMSZ5241BT1G work above 75°C?
SZMMSZ5241BT1G is rated for 500 mW power dissipation at lead temperature (TL) = 75°C, with linear derating of 6.7 mW/°C above that point. This means at TL = 100°C, maximum allowable power drops to 332.5 mW - a critical parameter for thermal design in enclosed automotive or industrial enclosures.
SZMMSZ5241BT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- SZMMSZ52xxxT1G
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 22 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 8.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
SZMMSZ5241BT1G FAQ
1.How can I place an order for SZMMSZ5241BT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMMSZ5241BT1G 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 SZMMSZ5241BT1G reliable?
The price and inventory of SZMMSZ5241BT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMSZ5241BT1G is usually 5 days.
3.What payment methods are accepted for SZMMSZ5241BT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMSZ5241BT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMMSZ5241BT1G?
SZMMSZ5241BT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMMSZ5241BT1G 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 SZMMSZ5241BT1G?
For technical support, including SZMMSZ5241BT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMSZ5241BT1G requirements.
6.How does Aetrix verify that SZMMSZ5241BT1G is sourced from the original manufacturer or authorized distributors?
All SZMMSZ5241BT1G 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 SZMMSZ5241BT1G meets industry standards.
7.What is the process for return or replacement of SZMMSZ5241BT1G?
All SZMMSZ5241BT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMSZ5241BT1G, 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 SZMMSZ5241BT1G part is unused and in its original packaging.
Return procedure for SZMMSZ5241BT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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