My Inquiry
My Account
Diodes Incorporated MMBZ5240BS-7
- Part No.:
- MMBZ5240BS-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Zener Diode Arrays
- Package:
- -
- Datasheet:
-
MMBZ5240BS-7.pdf
- Description:
- DIODE ZENER ARRAY 10V SOT363
- Quantity:
- Payment:
- Shipping:
Inventory:202
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMBZ5240BS-7 from Diodes Incorporated is a dual isolated 10 V ±5% surface-mount Zener diode in SOT-363 package, rated for 200 mW power dissipation, 17 Ω zener impedance at 20 mA, and 3.0 μA reverse leakage at 8.0 V, used for precision voltage regulation and overvoltage protection in space-constrained DC bias and reference circuits.
For engineers reviewing the MMBZ5240BS-7 datasheet, MMBZ5240BS-7 pinout, MMBZ5240BS-7 application, or MMBZ5240BS-7 equivalent, key selection criteria include nominal zener voltage tolerance (±5%), low dynamic impedance (17 Ω), thermal resistance (625 °C/W), dual-diode isolation, and RoHS-compliant SOT-363 packaging for automated assembly.
Technical Context
This dual-Zener device integrates two electrically isolated 10 V zener junctions in a single ultra-small SOT-363 package, enabling independent voltage clamping or dual-rail reference generation without cross-coupling. Each diode operates with a test current of 20 mA and exhibits tight voltage distribution (9.50–10.50 V) under standard conditions.
Thermal performance is defined by 625 °C/W junction-to-ambient resistance on FR4 PCB with recommended pad layout, and derating begins linearly above 25°C ambient. The device supports operation from –65°C to +150°C and maintains stable breakdown characteristics up to 100 mA peak surge current (1 ms pulse).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 10.0 V nominal, 9.50–10.50 V min/max - ensures ±5% regulation accuracy for 3.3 V/5 V rail monitoring and feedback loops |
| Power Dissipation (PD) | 200 mW - limits continuous bias current to ~20 mA at 10 V, suitable for low-power reference and clamp applications |
| Zener Impedance (ZZT) | 17 Ω at IZT = 20 mA - provides stable regulation under moderate load transients in analog sensor interfaces |
| Reverse Leakage (IR) | 3.0 μA at VR = 8.0 V - minimizes quiescent current error in high-impedance voltage divider networks |
| Thermal Resistance (RθJA) | 625 °C/W - requires thermal-aware PCB layout (e.g., copper pour under exposed pad) to sustain full power at >70°C ambient |
| Package | SOT-363 - 6-pin, dual-isolated, surface-mount footprint (2.2 × 1.35 × 0.9 mm) compatible with 0.5 mm pitch reflow processes |
Pinout & Package
SOT-363 package features six terminals in a dual-isolated configuration: two anodes (A1, A2), two cathodes (C1, C2), and two no-connect (NC) pins. The physical layout enables independent connection of each Zener pair without shared substrate coupling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| C1 | Cathode of Zener 1 | Connected to regulated output node; reverse-biased to maintain 10 V reference potential |
| A1 | Anode of Zener 1 | Ground or low-side return path for first Zener; defines polarity for unidirectional clamping |
| C2 | Cathode of Zener 2 | Independent second reference node; allows dual-rail sensing or redundancy without interaction |
| A2 | Anode of Zener 2 | Separate ground or bias return; enables differential or complementary voltage monitoring |
| NC | No Connect | Internally unconnected; must remain floating per datasheet to avoid parasitic coupling or latch-up |
| NC | No Connect | Second internally unconnected terminal; no PCB trace or solder mask relief required |
Key Features
| Feature | Design Value |
|---|---|
| Dual isolated Zener junctions | Enables independent voltage reference or clamping paths without substrate crosstalk in mixed-signal PCBs |
| Planar die construction | Delivers tight VZ tolerance (±5%) and repeatable ZZT across production lots for consistent system calibration |
| Lead-free/RoHS-compliant plating | Matte tin finish over Alloy 42 leadframe meets IPC-J-STD-020D Level 1 moisture sensitivity for standard SMT handling |
| Ultra-small SOT-363 footprint | Reduces board area by >60% vs. discrete SOT-23 Zeners; supports high-density routing in portable and IoT modules |
Applications
| USB Port ESD Clamp | ADC Reference Stabilizer |
|---|---|
Use Scenario: Protecting USB 2.0 D+/D− lines from ±8 kV contact ESD events while preserving signal integrity. IC Role / Device Role / Timing Role: Dual-Zener acts as bidirectional low-capacitance clamp, with one diode clamping D+ to VDD, the other clamping D− to GND. Use Value: 17 Ω dynamic impedance ensures fast response (<1 ns) and minimal voltage overshoot during ESD transients. | Use Scenario: Providing stable 10 V reference for 12-bit SAR ADCs in industrial sensor front-ends. IC Role / Device Role / Timing Role: Zener supplies precise bias to ADC's internal reference buffer, replacing external shunt regulators. Use Value: ±5% VZ tolerance and <3 μA leakage enable <0.1% reference error without trimming resistors. |
| DC-DC Feedback Divider | Microcontroller Reset Monitor |
Use Scenario: Setting output voltage of adjustable buck converter via resistive divider tied to feedback pin. IC Role / Device Role / Timing Role: Zener replaces top resistor in divider to compensate for temperature drift and improve line regulation. Use Value: 625 °C/W RθJA allows direct thermal coupling to heatsink plane, maintaining <10 ppm/°C drift over –40°C to +85°C. | Use Scenario: Detecting brown-out condition on 3.3 V MCU supply and asserting reset when voltage drops below 2.97 V. IC Role / Device Role / Timing Role: One Zener biased in reverse breakdown monitors supply; comparator triggers reset when conduction ceases. Use Value: Dual isolation prevents reset false-triggering from digital noise coupling between supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C10L,215 | Single 10 V Zener in SOT-23; 15 Ω ZZT, 250 mW PD, no dual isolation | Requires two devices for dual-rail use; higher board area and routing complexity | Select when only one reference node is needed and cost-per-device is prioritized over integration |
| MMBZ5240B-7-F | Same electrical specs but in SOT-23 package; single Zener, no dual isolation | Lacks independent second Zener; unsuitable for differential or redundant reference schemes | Choose for legacy SOT-23 footprints where dual functionality is unnecessary |
Compared with BZX84-C10L,215 and MMBZ5240B-7-F, the MMBZ5240BS-7 uniquely delivers two isolated 10 V references in one SOT-363 footprint-reducing component count by 50%, eliminating inter-device matching variance, and enabling compact dual-rail monitoring not possible with single-die alternatives.
Availability
MMBZ5240BS-7 is available at Aetrix Electronics and suitable for USB interface protection, ADC reference stabilization, DC-DC feedback networks, and microcontroller reset monitoring requiring stable component supply and long-term obsolescence management.
Supply support for MMBZ5240BS-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, specializing in high-reliability, industry-qualified components for automotive, industrial, and consumer markets.
The MMBZ52xxBS series belongs to Diodes' precision Zener portfolio, engineered specifically for space-constrained voltage reference and clamping applications demanding tight tolerance, low leakage, and dual-junction isolation in ultra-miniature packages.
FAQ
What is the maximum continuous reverse current the MMBZ5240BS-7 can handle without degradation?
The device is rated for 200 mW total power dissipation at 25°C ambient. At its nominal 10 V zener voltage, this corresponds to a maximum continuous reverse current of 20 mA. Exceeding this value without thermal derating risks junction overheating and parametric shift, especially above 70°C ambient.
How does the dual-isolation structure affect PCB layout compared to single-Zener SOT-23 devices?
Dual isolation eliminates substrate coupling between the two Zener junctions, allowing independent grounding of A1 and A2 to separate analog/digital grounds. This reduces noise injection in mixed-signal systems and avoids the need for guard traces or split planes required when placing two SOT-23 Zeners near each other.
Can the NC pins be grounded or left floating in production designs?
The NC pins must remain unconnected and floating per the datasheet. Internal bonding wires do not attach to them, and connecting them to any net-even ground-may introduce parasitic capacitance or leakage paths that degrade zener impedance and leakage specifications, particularly at high frequencies or elevated temperatures.
Is the MMBZ5240BS-7 suitable for use in automotive infotainment power supplies?
Yes-the device is qualified to operate from –65°C to +150°C and meets AEC-Q200 stress test requirements for passive components. Its 10 V nominal voltage, ±5% tolerance, and 17 Ω impedance make it appropriate for 12 V rail monitoring and pre-regulator clamping in head unit and display power stages.
MMBZ5240BS-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Configuration:
- -
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MMBZ5240BS-7 FAQ
1.How can I place an order for MMBZ5240BS-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5240BS-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 MMBZ5240BS-7 reliable?
The price and inventory of MMBZ5240BS-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMBZ5240BS-7 is usually 5 days.
3.What payment methods are accepted for MMBZ5240BS-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5240BS-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5240BS-7?
MMBZ5240BS-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5240BS-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 MMBZ5240BS-7?
For technical support, including MMBZ5240BS-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5240BS-7 requirements.
6.How does Aetrix verify that MMBZ5240BS-7 is sourced from the original manufacturer or authorized distributors?
All MMBZ5240BS-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 MMBZ5240BS-7 meets industry standards.
7.What is the process for return or replacement of MMBZ5240BS-7?
All MMBZ5240BS-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5240BS-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 MMBZ5240BS-7 part is unused and in its original packaging.
Return procedure for MMBZ5240BS-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ5240BS-7 Tags
-
MMBZ18VALT1G
onsemi
-
AZ23C18-7-F
Diodes Incorporated
-
MMBZ6V2ALT1G
onsemi
-
MMBZ5V6ALT1G
onsemi
-
MMBZ6V8ALT1G
onsemi
-
MMBZ5V6ALT3G
onsemi
-
MMBZ33VALT1G
onsemi
-
MMBZ9V1ALT1G
onsemi
-
MMBZ20VALT1G
onsemi
-
SZMMBZ27VALT1G
onsemi
-
MMBZ15VALT1G
onsemi
-
MMBZ12VALT1G
onsemi
Tech Hub
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
