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Diodes Incorporated MMBZ5245BW-7-F
- Part No.:
- MMBZ5245BW-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
MMBZ5245BW-7-F.pdf
- Description:
- DIODE ZENER 15V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:10,367
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Product details
Overview
MMBZ5245BW-7-F from Diodes Incorporated is a 15 V, 200 mW surface-mount Zener diode in SOT323 package, rated for 8.5 mA test current, 16 Ω zener impedance at 1 kHz, and 0.1 μA reverse leakage at 11 V, used for precision voltage regulation and overvoltage protection in low-power analog sensor interfaces.
For engineers reviewing the MMBZ5245BW-7-F datasheet, MMBZ5245BW-7-F pinout, MMBZ5245BW-7-F application, or MMBZ5245BW-7-F equivalent, key selection criteria include nominal zener voltage tolerance (±5%), thermal resistance (625 °C/W), AEC-Q101 qualification, green RoHS compliance, and SOT323 footprint compatibility with automated assembly.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. It features a tight 14.25–15.75 V zener voltage range at 8.5 mA, with low dynamic impedance (16 Ω) ensuring minimal output variation across current changes.
Designed for high-reliability applications, it meets AEC-Q101 stress testing requirements and uses halogen- and antimony-free molding compound. Its 0.006 g mass and SOT323 footprint support compact, lightweight PCB layouts in space-constrained modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nominal) | 15 V - Stable regulation point for biasing or clamping circuits |
| Zener Voltage Range | 14.25–15.75 V - ±5% tolerance ensures predictable performance across production lots |
| Test Current (IZT) | 8.5 mA - Operating point where zener voltage and impedance are specified |
| Zener Impedance (ZZT) | 16 Ω @ 1 kHz - Low dynamic resistance minimizes voltage shift under load transients |
| Power Dissipation | 200 mW - Maximum continuous power at 25°C ambient; derates linearly above 25°C |
| Reverse Leakage (IR) | 0.1 μA @ 11 V - Ultra-low leakage preserves accuracy in high-impedance reference paths |
| Thermal Resistance (RθJA) | 625 °C/W - Requires careful PCB copper area planning to avoid junction overheating |
Pinout & Package
Package: SOT323 - 3-terminal surface-mount plastic package with matte tin-plated Alloy 42 leadframe, moisture sensitivity level 1, UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node during normal operation; reverse-biased for regulation |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to higher-potential node; defines regulated voltage drop relative to anode |
| Case / Heat Sink (Pin 3) | Thermal path only | Internally connected to cathode in standard SOT323 Zener configuration per Diodes Inc. marking diagram |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Green RoHS compliant | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb), fully lead-free per EU directives |
| SOT323 package | 0.006 g weight and 2.1 mm × 1.3 mm footprint enable high-density layout in portable electronics |
| Low leakage & tight tolerance | 0.1 μA IR at 11 V and ±5% VZ support precision references in battery-powered sensors |
Applications
| Industrial Sensor Signal Conditioning | Automotive Cabin Control Module |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADCs in temperature/humidity transmitters. IC Role / Device Role / Timing Role: Zener diode provides fixed 15 V rail for op-amp biasing and ADC reference divider networks. Use Value: ±5% VZ tolerance and 16 Ω impedance ensure <0.5% full-scale error contribution to measurement chain. | Use Scenario: Overvoltage clamp on LIN bus interface supply line exposed to load-dump transients. IC Role / Device Role / Timing Role: Shunts excess energy above 15 V to protect downstream 3.3 V LDO and microcontroller I/O. Use Value: AEC-Q101 qualification and 200 mW rating allow reliable transient suppression without derating in 125°C under-hood environments. |
| Portable Medical Pulse Oximeter | Smart Home Smoke Detector MCU Power Rail |
Use Scenario: Generating stable bias for photodiode transimpedance amplifier in battery-operated wearable device. IC Role / Device Role / Timing Role: Zener regulates virtual ground and reference nodes in ultra-low-power analog front-end. Use Value: 0.1 μA reverse leakage prevents measurable current drain on coin-cell battery during multi-year standby. | Use Scenario: Clamping 5 V USB-charged rail to prevent brownout-induced MCU reset during surge events. IC Role / Device Role / Timing Role: Acts as fast-acting shunt regulator to hold rail within 15 V ±0.5 V during 100 ms surges. Use Value: SOT323 thermal mass and 625 °C/W RθJA permit safe dissipation of 200 mW without heatsink in sealed enclosure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C15LT1G | 15 V nominal, ±5% tolerance, 300 mW rating, SOT23 package, 20 Ω ZZT | Higher power rating but larger footprint; not AEC-Q101 qualified | Select when higher surge margin is needed and automotive qualification is not required |
| MMSZ5245ET1G | 15 V nominal, ±5% tolerance, 350 mW rating, SOD-123 package, 17 Ω ZZT | Larger package (3.7 × 1.6 mm), higher thermal resistance (833 °C/W), no AEC-Q101 | Choose for cost-sensitive industrial designs where board space allows larger footprint |
Compared with BZX84-C15LT1G and MMSZ5245ET1G, MMBZ5245BW-7-F offers AEC-Q101 qualification and SOT323 miniaturization at 200 mW-making it optimal for space-constrained automotive and portable medical applications requiring certified reliability.
Availability
MMBZ5245BW-7-F is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive cabin control modules, and portable medical pulse oximeters requiring stable component supply with consistent parametric performance across production batches.
Supply support for MMBZ5245BW-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 MMBZ52xxBW series belongs to Diodes' precision Zener diode product line, engineered specifically for voltage reference, regulation, and overvoltage protection in automotive, industrial, and portable electronics where AEC-Q101 reliability and green compliance are mandatory.
FAQ
What is the maximum reverse voltage this Zener can safely clamp without damage?
The MMBZ5245BW-7-F is rated for 11 V reverse voltage (VR) at which leakage remains ≤0.1 μA. Its absolute maximum non-repetitive peak surge power is 1 W for 10 ms pulses (per Fig. 6), but continuous clamping must stay within 200 mW derated by ambient temperature using the curve in Fig. 1.
Is this part suitable for use in automotive engine control units?
No-while MMBZ5245BW-7-F is AEC-Q101 qualified and suitable for cabin, body, and infotainment modules, it is not rated for under-hood engine control units due to its 150°C max operating temperature limit and lack of extended temperature grade (-40°C to +175°C) certification required for ECU placement.
How does the SOT323 package affect thermal performance compared to SOD-123?
The SOT323 package has a thermal resistance of 625 °C/W (junction-to-ambient), significantly lower than SOD-123's typical 833 °C/W. This enables more efficient heat dissipation in compact layouts, allowing the MMBZ5245BW-7-F to sustain full 200 mW power at higher ambient temperatures without exceeding 150°C junction limit.
Can this Zener be used as a voltage reference for a 16-bit DAC?
Not directly-its ±5% initial tolerance and 16 Ω dynamic impedance introduce too much error for 16-bit accuracy. However, it can serve as a coarse pre-regulator feeding a precision shunt reference (e.g., TL431) in two-stage reference architectures where long-term stability and tempco are managed downstream.
MMBZ5245BW-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):
- 15 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 16 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 11 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
MMBZ5245BW-7-F FAQ
1.How can I place an order for MMBZ5245BW-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5245BW-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 MMBZ5245BW-7-F reliable?
The price and inventory of MMBZ5245BW-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 MMBZ5245BW-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5245BW-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5245BW-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5245BW-7-F?
MMBZ5245BW-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5245BW-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 MMBZ5245BW-7-F?
For technical support, including MMBZ5245BW-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5245BW-7-F requirements.
6.How does Aetrix verify that MMBZ5245BW-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5245BW-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 MMBZ5245BW-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5245BW-7-F?
All MMBZ5245BW-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5245BW-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 MMBZ5245BW-7-F part is unused and in its original packaging.
Return procedure for MMBZ5245BW-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ5245BW-7-F Tags
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