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Diodes Incorporated MMBZ5234BT-7-F
- Part No.:
- MMBZ5234BT-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOT-523
- Datasheet:
-
MMBZ5234BT-7-F.pdf
- Description:
- DIODE ZENER 6.2V 150MW SOT523
- Quantity:
- Payment:
- Shipping:
Inventory:5,824
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Product details
Overview
MMBZ5234BT-7-F from Diodes Incorporated is a 6.2 V, 150 mW surface-mount Zener diode in SOT-523 package, with nominal zener voltage tolerance ±5%, 7.0 Ω dynamic impedance at 20 mA test current, and 5.0 µA reverse leakage at 4.0 V. It provides precision voltage regulation in low-power signal conditioning and power rail clamping circuits.
For engineers reviewing the MMBZ5234BT-7-F datasheet, MMBZ5234BT-7-F pinout, MMBZ5234BT-7-F application, or MMBZ5234BT-7-F equivalent, key selection criteria include zener voltage accuracy, low dynamic impedance for stable regulation, thermal resistance (833 °C/W), RoHS-compliant lead-free plating, and SOT-523 footprint compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its terminals under varying load and supply conditions. Its planar die construction ensures consistent voltage regulation and low leakage, while the ultra-small SOT-523 package supports automated placement in space-constrained applications.
The device delivers 6.2 V nominal regulation at 20 mA test current, with dynamic impedance of 7.0 Ω and maximum reverse leakage of 5.0 µA at 4.0 V. Power dissipation is rated at 150 mW at 25 °C ambient, derating linearly above 25 °C per the published curve (833 °C/W junction-to-ambient thermal resistance).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.2 V nominal, 5.89–6.51 V range at 20 mA - defines precise clamping threshold for overvoltage protection |
| Power Dissipation (PD) | 150 mW at TA = 25 °C - limits continuous regulation capability in compact layouts |
| Zener Impedance (ZZT) | 7.0 Ω at IZT = 20 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 5.0 µA at VR = 4.0 V - guarantees low quiescent current in standby or sensing circuits |
| Thermal Resistance (RθJA) | 833 °C/W - dictates required copper area and airflow for thermal management on FR-4 boards |
| Package | SOT-523 - 1.6 mm × 0.8 mm footprint enables high-density routing in portable electronics |
Pinout & Package
SOT-523 is a 3-terminal ultra-small plastic surface-mount package with anode and cathode leads and no exposed pad. Polarity is marked by a cathode band on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Current entry terminal in forward bias | Connected to lower-potential node during regulation; determines polarity of clamping action |
| Cathode (Pin 2) | Current exit terminal in forward bias; zener breakdown terminal in reverse bias | Connected to regulated node; voltage referenced to this terminal during operation |
| No-Connect (Pin 3) | Non-functional mechanical support lead | Not electrically connected internally; omitted in schematic symbol but present physically for mechanical stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SOT-523 footprint | Enables placement in <1.0 mm² board area - critical for wearables and hearing aids |
| Planar die construction | Delivers tight VZ tolerance (±5%) and repeatable breakdown characteristics across production lots |
| 150 mW power rating | Supports regulation in low-current analog rails (e.g., sensor bias, ADC reference buffers) without heatsinking |
| Lead-free / RoHS-compliant plating | Matte tin finish over Alloy 42 leadframe meets IPC-J-STD-020D Level 1 moisture sensitivity for reflow compatibility |
Applications
| Portable Sensor Biasing | USB Interface ESD Clamp |
|---|---|
Use Scenario: Providing stable 6.2 V bias to MEMS pressure sensor ICs in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Zener voltage reference and rail clamp protecting sensor analog front-end from supply ripple. Use Value: Maintains sensor offset accuracy within ±1.5 mV over temperature due to low dynamic impedance (7.0 Ω) and tight VZ tolerance. | Use Scenario: Clamping D+ and D− lines to 6.2 V against ESD transients in USB 2.0 peripheral designs. IC Role / Device Role / Timing Role: Low-capacitance (<2 pF typical) transient voltage suppressor placed directly at connector. Use Value: Limits line voltage to safe levels during ±8 kV contact discharge without distorting 480 Mbps data signals. |
| Low-Power Microcontroller Reset Circuit | Industrial Analog Signal Conditioning |
Use Scenario: Generating clean reset threshold for 3.3 V microcontrollers using resistor divider + Zener clamp. IC Role / Device Role / Timing Role: Precision voltage reference defining logic-high reset release point. Use Value: Ensures reliable reset assertion across -40 to +85 °C with <±0.1 V drift, enabled by low tempco and 5 µA leakage. | Use Scenario: Stabilizing reference voltage for 12-bit SAR ADCs in programmable logic controllers. IC Role / Device Role / Timing Role: Low-noise shunt regulator supplying ADC internal reference buffer. Use Value: Reduces reference-induced INL error by >3 LSB through 7.0 Ω impedance limiting current noise coupling. |
Availability
MMBZ5234BT-7-F is available at Aetrix Electronics and suitable for portable sensor biasing, USB interface ESD clamp, and low-power microcontroller reset circuit applications requiring stable component supply and full traceability.
Supply support for MMBZ5234BT-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, cost-optimized components for consumer, industrial, and automotive markets.
The MMBZ52xxBT series belongs to Diodes' general-purpose Zener diode product line, engineered for precision voltage regulation and transient suppression in space-constrained, low-power electronic systems.
FAQ
What is the maximum reverse voltage before breakdown for MMBZ5234BT-7-F?
The nominal zener voltage is 6.2 V, with guaranteed minimum and maximum values of 5.89 V and 6.51 V respectively at 20 mA test current. Breakdown begins gradually below 5.89 V, but stable regulation occurs only within the specified range under defined current conditions.
Can MMBZ5234BT-7-F be used in place of a 5.6 V Zener diode?
No - MMBZ5234BT-7-F is specifically rated for 6.2 V regulation and is not interchangeable with 5.6 V devices like MMBZ5232BT. Substituting alters clamping thresholds, potentially causing overvoltage stress or premature shutdown in sensitive circuits.
Is the SOT-523 package compatible with standard pick-and-place equipment?
Yes - the SOT-523 package is designed for automated assembly, with JEDEC-standard tape-and-reel packaging (3000 units per reel) and lead geometry compliant with MIL-STD-202 solderability requirements for high-yield placement.
Does MMBZ5234BT-7-F require external heat sinking?
No - with a thermal resistance of 833 °C/W and 150 mW power rating, it operates safely without heatsinking when mounted on standard FR-4 PCBs using the recommended pad layout. Derating applies above 25 °C ambient per the published power curve.
MMBZ5234BT-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):
- 6.2 V
- Tolerance:
- ±5%
- Power - Max:
- 150 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 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
MMBZ5234BT-7-F FAQ
1.How can I place an order for MMBZ5234BT-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5234BT-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 MMBZ5234BT-7-F reliable?
The price and inventory of MMBZ5234BT-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 MMBZ5234BT-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5234BT-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5234BT-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5234BT-7-F?
MMBZ5234BT-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5234BT-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 MMBZ5234BT-7-F?
For technical support, including MMBZ5234BT-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5234BT-7-F requirements.
6.How does Aetrix verify that MMBZ5234BT-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5234BT-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 MMBZ5234BT-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5234BT-7-F?
All MMBZ5234BT-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5234BT-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 MMBZ5234BT-7-F part is unused and in its original packaging.
Return procedure for MMBZ5234BT-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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