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Diodes Incorporated MMBZ5241BW-7-F
- Part No.:
- MMBZ5241BW-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
MMBZ5241BW-7-F.pdf
- Description:
- DIODE ZENER 11V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:7,617
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Product details
Overview
MMBZ5241BW-7-F from Diodes Incorporated is a 11 V, 200 mW surface-mount Zener diode in SOT323 package, with nominal Zener voltage 11.0 V (min 10.45 V, max 11.55 V), test current 20 mA, and maximum Zener impedance 22 Ω at 20 mA. It provides precision voltage regulation in low-power signal conditioning and reference circuits.
For engineers reviewing the MMBZ5241BW-7-F datasheet, MMBZ5241BW-7-F pinout, MMBZ5241BW-7-F application, or MMBZ5241BW-7-F equivalent, key selection criteria include Zener voltage tolerance, dynamic impedance at rated test current, reverse leakage at 8.4 V, thermal resistance (625 °C/W), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load or supply conditions. Its 200 mW power rating and 625 °C/W junction-to-ambient thermal resistance define safe continuous operation on standard FR4 PCBs with recommended pad layout.
The device exhibits 2.0 μA maximum reverse leakage at VR = 8.4 V and 22 Ω dynamic impedance at IZT = 20 mA, enabling accurate voltage clamping in analog front-ends and overvoltage protection circuits where tight regulation and low noise are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 11.0 V - precise reference voltage at 20 mA test current |
| Zener Voltage Range | 10.45 V to 11.55 V - ±5% tolerance band defining regulation window |
| Test Current (IZT) | 20 mA - operating point where Zener voltage and impedance are specified |
| Zener Impedance (ZZT) | 22 Ω - dynamic resistance affecting regulation accuracy under load variation |
| Max Reverse Leakage (IR) | 2.0 μA @ VR = 8.4 V - ensures minimal quiescent current in standby protection circuits |
| Power Dissipation | 200 mW - maximum continuous DC power handling on FR4 board |
| Thermal Resistance | 625 °C/W - defines temperature rise per watt; requires thermal-aware PCB layout |
Pinout & Package
Package: SOT323 - ultra-small plastic surface-mount case (2.10 mm × 1.30 mm × 0.90 mm), lead-free, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Reverse-biased cathode connection point | Connected to lower-potential node in Zener clamp configuration |
| Cathode (Pin 2) | Reverse-biased anode connection point | Connected to higher-potential node; voltage referenced to this terminal |
| Case / Pin 3 | Non-functional mechanical tie | Internally unconnected; serves only as structural support and thermal path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control and body electronics |
| Green molding compound | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) meeting environmental compliance |
| SOT323 footprint | Enables high-density PCB layouts and compatibility with automated pick-and-place assembly |
| Matte tin lead finish | Ensures reliable solderability per MIL-STD-202, Method 208 without lead contamination |
Applications
| Automotive Sensor Signal Conditioning | Industrial Analog Input Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for temperature or pressure sensor ADC inputs in engine control units. IC Role / Device Role / Timing Role: Zener voltage reference and overvoltage clamp protecting downstream op-amps and converters. Use Value: Maintains 11 V reference stability within ±5% across temperature, preventing ADC saturation during transients. | Use Scenario: Protecting 0–10 V analog input channels in PLC modules from ESD and line surges. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp limiting input voltage to 11.55 V before damage threshold. Use Value: Limits leakage to ≤2.0 μA at 8.4 V, preserving signal integrity while absorbing up to 200 mW surge energy. |
| USB Port Overvoltage Clamp | Low-Power Microcontroller Reset Circuit |
Use Scenario: Clamping VBUS transient spikes on USB 2.0 data lines in portable medical devices. IC Role / Device Role / Timing Role: Fast-response Zener clamp placed between D+ and ground to suppress >11.55 V excursions. Use Value: 22 Ω dynamic impedance ensures rapid voltage stabilization without loading the data line. | Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers using resistor-divider + Zener feedback. IC Role / Device Role / Timing Role: Precision 11 V reference feeding comparator input to trigger reset at defined supply drop. Use Value: Tight 10.45–11.55 V tolerance enables repeatable reset activation across production batches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C11LT1G | Same 11 V nominal Zener, but 350 mW rating and SOT23 package; higher thermal resistance (450 °C/W) | Higher power handling supports longer surge events but requires larger PCB footprint | Select when >200 mW pulse energy must be absorbed without derating |
| MMSZ5241ET1G | Same 11 V rating, 500 mW rating, SOD-123 package; 15 Ω Zener impedance at 20 mA | Larger package improves thermal performance but reduces board density | Choose for improved regulation accuracy (lower ZZT) and higher continuous dissipation margin |
Compared with BZX84-C11LT1G and MMSZ5241ET1G, MMBZ5241BW-7-F offers optimal balance of ultra-small SOT323 size, AEC-Q101 qualification, and 22 Ω impedance-making it preferred for space-constrained automotive and industrial sensors where footprint and reliability are prioritized over peak power.
Availability
MMBZ5241BW-7-F is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial analog input protection, and USB port overvoltage clamping requiring stable component supply and long-term lifecycle assurance.
Supply support for MMBZ5241BW-7-F 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, industry-qualified components for automotive, industrial, and consumer markets.
The MMBZ52xxBW series targets compact, high-stability Zener regulation in space-constrained applications-designed specifically for AEC-Q101 compliance and green manufacturing requirements in modern electronics.
FAQ
What is the maximum reverse voltage this Zener can safely clamp without damage?
The MMBZ5241BW-7-F is rated for 8.4 V reverse voltage (VR) at which leakage remains ≤2.0 μA. Its absolute maximum non-repetitive peak reverse voltage is not explicitly specified, but sustained operation above 11.55 V risks thermal runaway beyond its 200 mW limit. For reliable clamping, design with VR ≤ 8.4 V and transient peaks limited by series impedance to stay within power derating curves.
Is this part suitable for use in automotive environments?
Yes-MMBZ5241BW-7-F is qualified to AEC-Q101 standards, tested for temperature cycling, humidity, mechanical shock, and high-temperature operating life. Its -65°C to +150°C operating range, green molding compound, and lead-free plating meet automotive electronics requirements for under-hood and cabin modules.
How does the SOT323 package affect thermal performance compared to SOT23?
The SOT323 package has higher thermal resistance (625 °C/W vs. ~450 °C/W for SOT23), meaning it heats up faster at the same power dissipation. This requires careful PCB layout-using minimum 10 mm² copper pour on both sides connected to pins-and limits continuous power to ≤150 mW above +70°C ambient per the derating curve in Figure 1.
Can this Zener be used in place of a 10 V or 12 V variant in an existing design?
No-MMBZ5241BW-7-F is specifically 11 V (10.45–11.55 V). Substituting with 10 V (MMBZ5240BW) or 12 V (MMBZ5242BW) changes regulation threshold by ≥0.45 V, potentially causing incorrect trip points in protection or reference circuits. Always verify voltage tolerance, impedance, and leakage match before cross-referencing.
MMBZ5241BW-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 200 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
MMBZ5241BW-7-F FAQ
1.How can I place an order for MMBZ5241BW-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5241BW-7-F 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 MMBZ5241BW-7-F reliable?
The price and inventory of MMBZ5241BW-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ5241BW-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5241BW-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5241BW-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5241BW-7-F?
MMBZ5241BW-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5241BW-7-F 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 MMBZ5241BW-7-F?
For technical support, including MMBZ5241BW-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5241BW-7-F requirements.
6.How does Aetrix verify that MMBZ5241BW-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5241BW-7-F 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 MMBZ5241BW-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5241BW-7-F?
All MMBZ5241BW-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5241BW-7-F, 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 MMBZ5241BW-7-F part is unused and in its original packaging.
Return procedure for MMBZ5241BW-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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