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Diodes Incorporated MMBZ5241BT-7-F
- Part No.:
- MMBZ5241BT-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOT-523
- Datasheet:
-
MMBZ5241BT-7-F.pdf
- Description:
- DIODE ZENER 11V 150MW SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:8,051
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Product details
Overview
MMBZ5241BT-7-F from Diodes Incorporated is a 150 mW, 11 V ±5% surface-mount Zener diode in SOT-523 package, rated for 20 mA test current and 22 Ω dynamic impedance at 1 kHz, used for precision voltage regulation and overvoltage protection in low-power analog signal conditioning circuits.
For engineers reviewing the MMBZ5241BT-7-F datasheet, MMBZ5241BT-7-F pinout, MMBZ5241BT-7-F application, or MMBZ5241BT-7-F equivalent, key selection criteria include nominal Zener voltage tolerance (±5%), low leakage (<2.0 µA at 8.4 V), thermal resistance (833 °C/W), and compatibility with automated SMT assembly on FR-4 PCBs.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its planar die construction ensures consistent breakdown characteristics and low parameter drift across production lots.
Designed for general-purpose voltage clamping and regulation in space-constrained applications, it delivers specified Zener voltage (10.45–11.55 V) at 20 mA with maximum 22 Ω impedance and <2.0 µA reverse leakage at VR = 8.4 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11 V nominal, 10.45–11.55 V range at IZT = 20 mA - defines regulated output voltage window |
| Power Dissipation (PD) | 150 mW at TA = 25°C - limits continuous power handling on standard FR-4 layout |
| Zener Impedance (ZZT) | 22 Ω at f = 1 kHz, IZT = 20 mA - determines AC regulation stability under dynamic load |
| Reverse Leakage (IR) | ≤2.0 µA at VR = 8.4 V - ensures minimal quiescent current in standby bias networks |
| Thermal Resistance (RθJA) | 833 °C/W - requires careful thermal pad design to avoid junction overheating above ambient |
| Package | SOT-523 - 0.002 g ultra-small footprint compatible with 0.5 mm pitch pick-and-place equipment |
Pinout & Package
Package: SOT-523 - molded plastic case, UL 94V-0 rated, moisture sensitivity level 1, lead-free matte tin plating over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / cathode reference point in reverse-biased operation | Connected to lower-potential node when used as shunt regulator or clamp |
| Cathode | Zener breakdown terminal / voltage reference output | Provides stable 11 V reference relative to anode when reverse biased above VZ |
| Case / Exposed Pad | Non-electrical mechanical termination | No internal connection; serves only structural and thermal dissipation role |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SMT footprint | Enables placement in high-density layouts where board area is constrained to <1.0 mm² per device |
| Planar die construction | Delivers tight parametric consistency (±5% VZ) and low batch-to-batch variation in Zener knee characteristics |
| Lead-free and RoHS compliant | Meets global environmental compliance requirements without requiring special soldering profiles or exemptions |
| Automated assembly optimized | Marking code "KH1" and standardized SOT-523 geometry support reliable vision-based placement and AOI inspection |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature transmitters operating from 3.3 V rails. IC Role / Device Role / Timing Role: Shunt Zener regulator providing 11 V reference for op-amp biasing and sensor excitation circuitry. Use Value: Maintains <0.5% reference drift over –40°C to +85°C due to low tempco and 22 Ω ZZT, improving measurement accuracy. | Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events in portable medical devices. IC Role / Device Role / Timing Role: Reverse-biased voltage clamp limiting VBUS to ≤11.55 V during ESD or load-dump events. Use Value: Absorbs up to 150 mW surge energy while holding clamped voltage within USB 2.0 specification limits. |
| Low-Power IoT Node Power Management | Automotive Body Control Module (BCM) Bias Network |
Use Scenario: Generating stable bias for RF transceiver LDO enable logic in battery-powered NB-IoT modules. IC Role / Device Role / Timing Role: Low-leakage (≤2.0 µA) Zener reference enabling microamp-level sleep current budgets. Use Value: Enables 1.8 µA system standby current by minimizing parasitic discharge through regulation path. | Use Scenario: Providing regulated 11 V supply for CAN transceiver bias in 12 V automotive BCMs. IC Role / Device Role / Timing Role: Pre-regulator stage stabilizing input to downstream linear regulators under wide battery voltage swings (9–16 V). Use Value: Ensures consistent transceiver operation despite cold-crank dips and load-dump spikes via fast-clamp response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C11LT1G | Same 11 V nominal, but SOD-523 package (slightly larger footprint); 20 Ω ZZT; 100 mW PD | Lower power rating reduces surge margin in transient clamp use cases | Select when board layout allows SOD-523 and thermal budget permits reduced derating |
| MMSZ5241ET1G | SOD-123 package; 11 V nominal; 22 Ω ZZT; 500 mW PD; higher leakage (5 µA @ 8.4 V) | Higher power enables longer-duration clamping but increases leakage in ultra-low-power designs | Select when higher surge energy absorption is required and leakage tolerance >5 µA exists |
Compared with BZX584C11LT1G and MMSZ5241ET1G, MMBZ5241BT-7-F uniquely balances ultra-compact SOT-523 size, 150 mW capability, and sub-2 µA leakage-making it optimal for space- and current-constrained industrial and portable applications.
Availability
MMBZ5241BT-7-F is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB port overvoltage protection, and low-power IoT node power management requiring stable component supply and full RoHS compliance.
Supply support for MMBZ5241BT-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The MMBZ52xxBT series belongs to Diodes' general-purpose Zener diode product line, engineered specifically for high-volume, cost-sensitive applications demanding tight voltage tolerance, low leakage, and full SMT automation compatibility.
FAQ
What is the maximum reverse leakage current for MMBZ5241BT-7-F and at what voltage is it measured?
The maximum reverse leakage current is 2.0 µA, measured at a reverse voltage (VR) of 8.4 V and ambient temperature of 25°C. This value is specified in the Electrical Characteristics table and reflects worst-case leakage under typical bias conditions before breakdown onset.
Can MMBZ5241BT-7-F be used in place of a 12 V Zener diode in a voltage reference circuit?
No - MMBZ5241BT-7-F has a nominal Zener voltage of 11 V (10.45–11.55 V range), not 12 V. Substituting it for a 12 V part would result in ~9% lower reference voltage, potentially causing system-level calibration errors or undervoltage lockout in regulated supplies.
Is the SOT-523 package of MMBZ5241BT-7-F compatible with standard reflow profiles for lead-free soldering?
Yes - the device is qualified for lead-free reflow per J-STD-020D Level 1 moisture sensitivity, and its matte tin finish over Alloy 42 leadframe supports standard Pb-free SAC305 peak temperatures up to 260°C with appropriate time-above-liquidus control.
How does thermal resistance affect the usable power dissipation of MMBZ5241BT-7-F at 85°C ambient?
With RθJA = 833 °C/W, junction temperature rise at 150 mW is 125°C - exceeding max TJ = 150°C when TA = 85°C. Derating is required: maximum safe PD at 85°C ambient is ~78 mW to maintain TJ ≤ 150°C.
MMBZ5241BT-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 11 V
- Tolerance:
- ±5%
- Power - Max:
- 150 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-523
MMBZ5241BT-7-F FAQ
1.How can I place an order for MMBZ5241BT-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5241BT-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 MMBZ5241BT-7-F reliable?
The price and inventory of MMBZ5241BT-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 MMBZ5241BT-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5241BT-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5241BT-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5241BT-7-F?
MMBZ5241BT-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5241BT-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 MMBZ5241BT-7-F?
For technical support, including MMBZ5241BT-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5241BT-7-F requirements.
6.How does Aetrix verify that MMBZ5241BT-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5241BT-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 MMBZ5241BT-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5241BT-7-F?
All MMBZ5241BT-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5241BT-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 MMBZ5241BT-7-F part is unused and in its original packaging.
Return procedure for MMBZ5241BT-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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