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Diodes Incorporated MMBZ5245BW-7
- Part No.:
- MMBZ5245BW-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
MMBZ5245BW-7.pdf
- Description:
- DIODE ZENER 15V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,767
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Product details
Overview
MMBZ5245BW-7 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 dynamic 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 circuits.
For engineers reviewing the MMBZ5245BW-7 datasheet, MMBZ5245BW-7 pinout, MMBZ5245BW-7 application, or MMBZ5245BW-7 equivalent, key selection criteria include nominal Zener voltage tolerance (±5%), thermal resistance (625 °C/W), AEC-Q101 qualification, green molding compound compliance, and SOT323 footprint compatibility with automated assembly.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and temperature conditions. Its 15 V nominal Zener voltage is specified at 8.5 mA test current, with tight ±5% tolerance (14.25–15.75 V) and low dynamic impedance (16 Ω at 1 kHz) ensuring minimal voltage deviation during transient current changes.
Designed for high-reliability applications, it meets AEC-Q101 stress testing requirements and features halogen- and antimony-free "Green" packaging with UL 94V-0 flammability rating. The SOT323 case uses matte tin-plated Alloy 42 leads and achieves 0.006 g weight with moisture sensitivity level 1 per J-STD-020D.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nominal) | 15 V - Stable voltage reference point at 8.5 mA test current |
| Zener Voltage Range | 14.25–15.75 V - ±5% tolerance band ensures predictable clamping behavior |
| Power Dissipation | 200 mW - Maximum continuous power handling on FR4 PCB with recommended pad layout |
| Zener Impedance | 16 Ω @ 1 kHz - Low dynamic resistance minimizes output voltage variation under load transients |
| Reverse Leakage Current | 0.1 μA @ 11 V - Ultra-low leakage preserves accuracy in high-impedance bias networks |
| Thermal Resistance | 625 °C/W - Junction-to-ambient value defines derating curve above +25°C ambient |
| Package | SOT323 - 3-pin surface-mount outline with 2.10 mm × 1.30 mm footprint and 0.65 mm pitch |
Pinout & Package
Package: SOT323 - ultra-small plastic surface-mount case with matte tin-plated terminals, 0.006 g mass, and UL 94V-0 flammability rating. Polarity is marked by cathode band on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to higher-potential node; voltage referenced to this pin during regulation |
| Case / Heat Sink (Pin 3) | Thermal path only | Non-electrical; serves as mechanical anchor and minor thermal relief path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HAST, and ESD testing |
| Halogen- and antimony-free "Green" compound | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - meets environmental compliance without compromising mold integrity |
| Moisture Sensitivity Level 1 | No floor life limitation - safe for reflow without baking prior to assembly |
| Lead-free and RoHS compliant | No intentionally added lead; fully compliant with EU Directive 2011/65/EU |
Applications
| Automotive Sensor Biasing | Industrial Analog Signal Conditioning |
|---|---|
Use Scenario: Providing stable 15 V reference for MEMS pressure sensor excitation in engine control units. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage regulator for analog front-end bias network. Use Value: Maintains sensor linearity across -40°C to +125°C ambient due to tight 14.25–15.75 V tolerance and AEC-Q101 qualification. | Use Scenario: Clamping input voltage to protect 16-bit ADC reference buffer from transient overvoltage. IC Role / Device Role / Timing Role: Reverse-biased Zener limiting rail excursion during ESD events or supply coupling. Use Value: 0.1 μA leakage at 11 V prevents loading of high-Z reference dividers; 16 Ω impedance ensures fast recovery post-clamp. |
| Portable Medical Instrument Power Supervision | IoT Node Battery Voltage Monitoring |
Use Scenario: Monitoring 15 V intermediate rail in portable ultrasound transducer driver module. IC Role / Device Role / Timing Role: Precision Zener used in comparator-based undervoltage lockout circuit. Use Value: ±5% voltage tolerance enables accurate trip-point setting; SOT323 footprint saves space in compact handheld enclosure. | Use Scenario: Scaling Li-ion battery voltage (3.0–4.2 V) to 15 V Zener-regulated reference for ADC measurement. IC Role / Device Role / Timing Role: Zener diode configured as voltage reference in resistive divider feedback path. Use Value: Low 200 mW power dissipation extends battery life; green compound supports medical/environmental certifications. |
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 | Same 15 V nominal, but 300 mW rating and SOT23 package; 20 Ω Zzt vs. 16 Ω | Higher power margin allows use in higher-current bias networks; larger SOT23 footprint may require PCB redesign | Select when >200 mW dissipation is needed or existing SOT23 layout exists |
| MMSZ5245ET1G | Same 15 V, 200 mW, SOD-123 package; 20 Ω Zzt, 0.1 μA IR, but not AEC-Q101 qualified | Lacks automotive qualification; suitable for commercial/industrial use only | Select for cost-sensitive non-automotive designs where AEC-Q101 is not required |
Compared with BZX84-C15LT1G and MMSZ5245ET1G, MMBZ5245BW-7 uniquely combines AEC-Q101 qualification, SOT323 miniaturization, and lowest Zener impedance (16 Ω) in its 200 mW class-making it optimal for space-constrained automotive and industrial voltage reference nodes requiring high stability.
Availability
MMBZ5245BW-7 is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial analog signal conditioning, and portable medical instrument power supervision requiring stable component supply and long-term lifecycle support.
Supply support for MMBZ5245BW-7 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' standard Zener diode product line, engineered specifically for high-reliability, low-power voltage regulation and protection in automotive, industrial, and portable electronics.
FAQ
What is the maximum operating temperature for MMBZ5245BW-7?
The MMBZ5245BW-7 has an operating junction temperature range of –65°C to +150°C, with derating beginning at +25°C ambient per the published power derating curve. At +85°C ambient, maximum allowable power dissipation drops to 125 mW based on its 625 °C/W thermal resistance.
Is MMBZ5245BW-7 suitable for automotive applications?
Yes-MMBZ5245BW-7 is explicitly qualified to AEC-Q101 standards, including stress tests for temperature cycling, high-accelerated temperature/humidity stress, and human-body-model ESD. Its green molding compound and lead-free plating meet automotive supply chain requirements.
How does the SOT323 package affect PCB layout?
The SOT323 package measures 2.10 mm × 1.30 mm with 0.65 mm pin pitch and requires a specific pad layout (per Diodes AP02001) to ensure solder joint reliability and thermal performance. Its small size supports high-density layouts but demands precise stencil design and placement accuracy.
What is the significance of the "-7-F" suffix in the part number?
The "-7-F" suffix denotes tape-and-reel packaging: "-7" indicates 3000 units per reel in SOT323 carrier tape, and "-F" confirms full RoHS and halogen-free compliance. This suffix is mandatory for ordering and distinguishes it from bulk or other packaging variants.
MMBZ5245BW-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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 FAQ
1.How can I place an order for MMBZ5245BW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5245BW-7 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 reliable?
The price and inventory of MMBZ5245BW-7 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 is usually 5 days.
3.What payment methods are accepted for MMBZ5245BW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5245BW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5245BW-7?
MMBZ5245BW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5245BW-7 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?
For technical support, including MMBZ5245BW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5245BW-7 requirements.
6.How does Aetrix verify that MMBZ5245BW-7 is sourced from the original manufacturer or authorized distributors?
All MMBZ5245BW-7 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 meets industry standards.
7.What is the process for return or replacement of MMBZ5245BW-7?
All MMBZ5245BW-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5245BW-7, 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 part is unused and in its original packaging.
Return procedure for MMBZ5245BW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ5245BW-7 Tags
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