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Diodes Incorporated MMBZ5246BW-7-F
- Part No.:
- MMBZ5246BW-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
MMBZ5246BW-7-F.pdf
- Description:
- DIODE ZENER 16V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,700
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Product details
Overview
MMBZ5246BW-7-F from Diodes Incorporated is a 16 V, 200 mW surface-mount Zener diode in SOT323 package, with nominal zener voltage 16.0 V (min 15.2 V, max 16.8 V), test current 7.8 mA, and zener impedance 17 Ω at 7.8 mA. It provides precision voltage regulation in low-power analog signal conditioning and power rail clamping circuits.
For engineers reviewing the MMBZ5246BW-7-F datasheet, MMBZ5246BW-7-F pinout, MMBZ5246BW-7-F application, or MMBZ5246BW-7-F equivalent, key selection criteria include zener voltage tolerance (±5%), low leakage (<0.1 µA at 12 V), thermal resistance (625 °C/W), AEC-Q101 qualification, and RoHS/Green compliance for automotive and industrial PCB designs.
Technical Context
This device operates as a reverse-biased voltage reference with sharp breakdown at 16 V under 7.8 mA test current. Its 17 Ω dynamic impedance ensures stable regulation across load variations, while 0.1 µA maximum reverse leakage at VR = 12 V supports high-impedance bias networks.
Designed for surface-mount assembly on FR4 PCBs using recommended pad layout AP02001, it delivers 200 mW power dissipation at 25 °C ambient, derating linearly to zero at 150 °C per Fig. 1. The SOT323 package enables compact placement in space-constrained analog front-ends and sensor interface modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage | 16.0 V (15.2–16.8 V range); sets precise clamp/reference level for 15–17 V rails |
| Power Dissipation | 200 mW; supports continuous operation in low-current biasing and protection circuits |
| Zener Impedance | 17 Ω @ 7.8 mA; maintains <100 mV output variation under ±2 mA load change |
| Reverse Leakage | ≤0.1 µA @ 12 V; avoids loading of high-Z feedback or reference nodes |
| Thermal Resistance | 625 °C/W; requires minimal copper area for thermal management on standard FR4 |
| Operating Temp | −65 to +150 °C; qualified for under-hood automotive and industrial environments |
| AEC-Q101 | Qualified; meets stress testing requirements for automotive electronics reliability |
Pinout & Package
Package: SOT323 - 3-terminal plastic surface-mount package with matte tin-plated Alloy 42 leadframe, moisture sensitivity level 1, and 0.006 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node in reverse-bias configuration; used for cathode-referenced clamping |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to regulated/protected node; defines 16 V reference potential when reverse biased |
| NC / Case (Pin 3) | Non-connected internal tie | No electrical connection; serves mechanical anchoring only; must remain unconnected in layout |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD tests |
| Halogen- and antimony-free "Green" compound | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb; meets global environmental compliance mandates |
| SOT323 small-outline package | 2.1 mm × 1.3 mm footprint; enables high-density routing in portable and sensor modules |
| Lead-free and RoHS compliant | No purposely added lead; fully compliant with EU Directive 2011/65/EU and J-STD-020D Level 1 |
Applications
| Automotive Sensor Signal Conditioning | Industrial PLC Input Protection |
|---|---|
Use Scenario: Stabilizing reference voltage for analog-to-digital conversion of engine coolant temperature sensor outputs. IC Role / Device Role / Timing Role: Zener diode providing 16 V rail clamp and precision bias for op-amp input stage. Use Value: Prevents ADC saturation during transients while maintaining <0.5% voltage error over −40 to +125 °C. | Use Scenario: Protecting 24 V digital input channels from ESD and overvoltage events in factory automation controllers. IC Role / Device Role / Timing Role: Low-leakage shunt regulator clamping induced surges before they reach FPGA I/O pins. Use Value: Limits transient voltage to ≤16.8 V with <0.1 µA standby current, preserving logic-level integrity. |
| Medical Wearable Battery Monitoring | Consumer IoT Power Rail Regulation |
Use Scenario: Regulating reference voltage for lithium-ion cell voltage measurement in compact health monitors. IC Role / Device Role / Timing Role: Precision 16 V Zener establishing stable reference for 12-bit battery gauge IC. Use Value: Enables ±10 mV absolute accuracy over full temperature range without trimming. | Use Scenario: Providing stable 16 V supply for RF front-end LNA biasing in smart home gateways. IC Role / Device Role / Timing Role: Low-impedance voltage source replacing larger 3-pin regulators in space-limited layouts. Use Value: Delivers 7.8 mA test current capability with 17 Ω impedance, reducing board area by >60% vs. SOIC alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C16LT1G | Same 16 V nominal, but 300 mW rating and SOT23 package; 40 Ω Zzt vs. 17 Ω | Higher power handling suits higher-current biasing; larger footprint limits ultra-compact designs | Select when >200 mW dissipation or legacy SOT23 compatibility is required |
| MMSZ5246T1G | Same 16 V rating, 500 mW rating, SOD-123 package; 20 Ω Zzt; 0.1 µA IR same | Higher power and thermal mass support sustained 10 mA operation; less suitable for fine-pitch automated assembly | Choose for industrial power supplies needing margin above 200 mW or where SOD-123 is standardized |
Compared with BZX84-C16LT1G and MMSZ5246T1G, MMBZ5246BW-7-F offers the lowest zener impedance (17 Ω) in the smallest footprint (SOT323), making it optimal for high-precision, space-constrained analog regulation where thermal budget is tightly controlled at ≤200 mW.
Availability
MMBZ5246BW-7-F is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC input protection, and medical wearable battery monitoring requiring stable component supply and long-term lifecycle assurance.
Supply support for MMBZ5246BW-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 components for automotive, industrial, and consumer markets.
The MMBZ52xxBW series targets cost-sensitive, high-volume applications demanding AEC-Q101 qualification, green packaging, and tight zener voltage tolerances in miniature SMT packages.
FAQ
What is the maximum reverse leakage current for MMBZ5246BW-7-F at 12 V?
The maximum reverse leakage current is 0.1 µA at VR = 12 V and TA = +25°C, as specified in the Electrical Characteristics table. This ultra-low leakage preserves signal integrity in high-impedance bias networks and reference dividers, especially critical in battery-powered sensor nodes where standby current must be minimized.
Is MMBZ5246BW-7-F suitable for automotive applications?
Yes - it is qualified to AEC-Q101 standards, including temperature cycling, high-temperature reverse bias, and ESD testing. Its operating temperature range of −65 to +150 °C and green, halogen-free construction meet automotive electronics requirements for under-hood and cabin modules.
How does the SOT323 package affect thermal performance?
With a thermal resistance of 625 °C/W (junction-to-ambient on FR4), the SOT323 requires minimal copper pour for 200 mW operation at room temperature. Derating begins at 25 °C, reaching zero dissipation at 150 °C, so thermal design must follow Diodes' AP02001 recommended pad layout for reliable performance.
Can MMBZ5246BW-7-F replace older through-hole Zeners like 1N4744A?
No - while both regulate at ~16 V, the MMBZ5246BW-7-F is a 200 mW SMT device with different impedance (17 Ω vs. 10 Ω), leakage (0.1 µA vs. 5 µA), and package. It replaces legacy SMT Zeners like BZX84-C16, not axial-leaded types, due to differing power handling and thermal paths.
MMBZ5246BW-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):
- 16 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 17 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 12 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-323
MMBZ5246BW-7-F FAQ
1.How can I place an order for MMBZ5246BW-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5246BW-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 MMBZ5246BW-7-F reliable?
The price and inventory of MMBZ5246BW-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 MMBZ5246BW-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5246BW-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5246BW-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5246BW-7-F?
MMBZ5246BW-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5246BW-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 MMBZ5246BW-7-F?
For technical support, including MMBZ5246BW-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5246BW-7-F requirements.
6.How does Aetrix verify that MMBZ5246BW-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5246BW-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 MMBZ5246BW-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5246BW-7-F?
All MMBZ5246BW-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5246BW-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 MMBZ5246BW-7-F part is unused and in its original packaging.
Return procedure for MMBZ5246BW-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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