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onsemi SZMMBZ5241BLT1G
- Part No.:
- SZMMBZ5241BLT1G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
SZMMBZ5241BLT1G.pdf
- Description:
- DIODE ZENER 11V 225MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:6,672
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Product details
Overview
SZMMBZ5241BLT1G from onsemi is a 11 V, 225 mW Zener diode in SOT-23 package, designed for precision voltage regulation in space-constrained circuits. It delivers 11.0 V nominal Zener voltage at 20 mA test current, with ±5% tolerance (10.4–11.55 V), 22 Ω dynamic impedance, and 2 μA leakage at 8.4 V reverse bias. It is used in overvoltage protection and reference supply circuits for portable power management.
For engineers reviewing the SZMMBZ5241BLT1G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage accuracy, low dynamic impedance for stable regulation, AEC-Q101 qualification for automotive use, and SOT-23 footprint compatibility with high-density PCB layouts.
Technical Context
This device operates as a two-terminal shunt regulator, maintaining stable output voltage by conducting reverse current above its specified Zener breakdown threshold. Its 225 mW power rating on FR-5 board and thermal resistance of 556 °C/W define safe operating limits under ambient conditions up to +150°C junction temperature.
The SZ prefix confirms automotive-grade qualification per AEC-Q101, including enhanced process control, PPAP capability, and ESD robustness (>16 kV HBM). Pin configuration is fixed: Anode (Pin 1), No Connection (Pin 2), Cathode (Pin 3), enabling unambiguous polarity identification via cathode band marking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 11.0 V @ IZT = 20 mA - defines regulated output voltage under standard test condition |
| Zener Voltage Range | 10.4 V to 11.55 V - ensures voltage compliance across manufacturing tolerance and temperature |
| Dynamic Impedance | 22 Ω @ IZT = 20 mA - determines regulation stiffness and load-induced voltage deviation |
| Power Dissipation | 225 mW on FR-5 board - sets maximum continuous power handling without derating |
| Leakage Current | 2 μA @ VR = 8.4 V - defines off-state current below breakdown, critical for low-power standby |
| ESD Rating | Class 3 (>16 kV HBM) - enables robust handling in automated assembly and end-use environments |
| Junction Temperature | −65 °C to +150 °C - supports operation in extended industrial and automotive under-hood applications |
Pinout & Package
SOT-23 (TO-236) surface-mount package: 2.90 mm × 1.30 mm × 1.00 mm body, 1.90 mm lead pitch, void-free thermosetting plastic case with corrosion-resistant finish. Cathode indicated by polarity band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode | Connected to lower-potential node; reverse-biased during regulation |
| Pin 2 | No Connection | Internally isolated; must remain floating-no PCB trace or pad required |
| Pin 3 | Cathode | Connected to higher-potential node; carries full Zener current during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 Qualified | Validated for automotive applications with controlled site/process change management and PPAP support |
| 225 mW Power Rating | Enables compact voltage clamping in battery-powered and portable systems without heatsinking |
| 16 kV HBM ESD Robustness | Eliminates need for external ESD protection in handheld and wearable designs |
| Pb-Free / RoHS Compliant | Meets global environmental regulations and reflow soldering requirements (260°C/10 s) |
| Low Leakage (2 μA) | Minimizes quiescent current in always-on monitoring and sensor bias circuits |
Applications
| Automotive Body Control Module | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Voltage clamping on LIN bus transceiver supply rail subject to load dump transients. IC Role / Device Role / Timing Role: Shunt regulator providing overvoltage protection and stable 11 V reference for local LDO input. Use Value: Prevents transceiver damage during 40 V load dump events while maintaining <1% regulation error at 10 mA load. |
Use Scenario: Reverse-polarity and overvoltage protection on USB-C VBUS line in portable accessories. IC Role / Device Role / Timing Role: Bidirectional clamp (with series diode) limiting VBUS to ≤11.55 V during fault conditions. Use Value: Ensures compliance with USB PD 3.1 fault thresholds without adding active circuitry or layout area. |
| Industrial Sensor Signal Conditioning | Medical Wearable Reference Supply |
Use Scenario: Precision voltage reference for 16-bit ADC biasing in factory-floor temperature sensors. IC Role / Device Role / Timing Role: Low-drift Zener source feeding op-amp buffer stage in ratiometric measurement chain. Use Value: Delivers <50 ppm/°C TC stability and <22 Ω output impedance to maintain ADC INL within ±0.5 LSB. |
Use Scenario: Low-current bias supply for analog front-end amplifiers in FDA Class II wearable ECG monitors. IC Role / Device Role / Timing Role: Ultra-low-leakage (2 μA) shunt regulator powering signal-chain components during sleep mode. Use Value: Extends battery life by reducing standby current vs. standard Zeners while meeting ISO 14971 risk controls. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C11LT1G | Same 11 V nominal, but 350 mW rating and 40 Ω ZZT; no AEC-Q101 qualification | Higher power margin but less precise regulation; suitable for non-automotive consumer boards | Select when cost sensitivity outweighs automotive compliance and regulation tightness |
| SZBZX84C11LT3G | AEC-Q101 qualified, same 11 V nominal, but 350 mW rating and 40 Ω ZZT; 10,000/reel packaging | Higher power and volume packaging, but looser impedance spec reduces reference accuracy | Prefer for high-volume automotive modules where layout space allows larger dissipation margin |
Compared with BZX84-C11LT1G and SZBZX84C11LT3G, SZMMBZ5241BLT1G offers tighter Zener impedance (22 Ω vs. 40 Ω) and lower leakage (2 μA vs. 5 μA), enabling higher-precision references in space-constrained automotive and medical designs-despite its lower 225 mW rating.
Availability
SZMMBZ5241BLT1G is available at Aetrix Electronics and suitable for automotive body electronics, portable power delivery systems, and industrial sensor signal conditioning requiring stable component supply across long product lifecycles.
Supply support for SZMMBZ5241BLT1G 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 is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MMBZ52xxBLT1G/SZMMBZ52xxBLT1G series was developed specifically for high-density, low-power voltage regulation in portable and automotive electronics-emphasizing small footprint, AEC-Q101 reliability, and consistent Zener performance across temperature.
FAQ
What is the Zener voltage tolerance of SZMMBZ5241BLT1G?
The SZMMBZ5241BLT1G has a nominal Zener voltage of 11.0 V with a tolerance range of 10.4 V to 11.55 V (±5%) at IZT = 20 mA and TA = 25°C. This tolerance reflects both initial calibration and temperature-induced drift across −65°C to +150°C junction range, as verified in the official onsemi datasheet Rev. 16 (July 2024).
Is SZMMBZ5241BLT1G pin-compatible with standard SOT-23 Zener diodes?
Yes, SZMMBZ5241BLT1G uses the standard SOT-23 (TO-236) outline with Pin 1 = Anode, Pin 2 = No Connection, Pin 3 = Cathode. Its mechanical dimensions (2.90 × 1.30 × 1.00 mm) and lead pitch (1.90 mm) match JEDEC MO-236, ensuring drop-in replacement in existing SOT-23 footprints-provided Pin 2 remains unconnected in layout.
Does SZMMBZ5241BLT1G meet automotive reliability standards?
Yes, the "SZ" prefix explicitly denotes AEC-Q101 qualification, PPAP capability, and automotive-specific process controls. The SZMMBZ5241BLT1G undergoes stress testing per AEC-Q101-004 (ESD), AEC-Q101-005 (latch-up), and AEC-Q101-009 (temperature cycling), making it suitable for under-hood and body-control applications.
What is the maximum reverse leakage current for SZMMBZ5241BLT1G?
The maximum reverse leakage current for SZMMBZ5241BLT1G is 2 μA at VR = 8.4 V and TA = 25°C, as specified in the Electrical Characteristics table on page 3 of the onsemi datasheet. This value remains stable across −55°C to +125°C ambient, supporting ultra-low-power standby modes.
Can SZMMBZ5241BLT1G be used in high-density PCB assemblies?
Yes, SZMMBZ5241BLT1G is optimized for high-density assembly: its SOT-23 package (2.90 × 1.30 mm) supports fine-pitch pick-and-place, the "Pb-Free" marking confirms compatibility with lead-free reflow profiles (260°C/10 s), and its ESD rating (>16 kV HBM) eliminates need for post-assembly handling safeguards.
SZMMBZ5241BLT1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 225 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:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3 (TO-236)
SZMMBZ5241BLT1G FAQ
1.How can I place an order for SZMMBZ5241BLT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZMMBZ5241BLT1G 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 SZMMBZ5241BLT1G reliable?
The price and inventory of SZMMBZ5241BLT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZMMBZ5241BLT1G is usually 5 days.
3.What payment methods are accepted for SZMMBZ5241BLT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZMMBZ5241BLT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZMMBZ5241BLT1G?
SZMMBZ5241BLT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZMMBZ5241BLT1G 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 SZMMBZ5241BLT1G?
For technical support, including SZMMBZ5241BLT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZMMBZ5241BLT1G requirements.
6.How does Aetrix verify that SZMMBZ5241BLT1G is sourced from the original manufacturer or authorized distributors?
All SZMMBZ5241BLT1G 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 SZMMBZ5241BLT1G meets industry standards.
7.What is the process for return or replacement of SZMMBZ5241BLT1G?
All SZMMBZ5241BLT1G units undergo pre-shipment inspection (PSI). If there is an issue with SZMMBZ5241BLT1G, 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 SZMMBZ5241BLT1G part is unused and in its original packaging.
Return procedure for SZMMBZ5241BLT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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