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Diodes Incorporated MMBZ5232B-7-F
- Part No.:
- MMBZ5232B-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ5232B-7-F.pdf
- Description:
- DIODE ZENER 5.6V 350MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,698
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Product details
Overview
MMBZ5232B-7-F from Diodes Incorporated is a 5.6V, 350mW surface-mount Zener diode in SOT23 package, designed for precision voltage regulation and transient overvoltage clamping in low-power analog and digital circuits. It delivers ±5% nominal Zener voltage tolerance (5.32–5.88V), 11Ω dynamic impedance at 20mA test current, and 5µA reverse leakage at 3.0V, enabling stable reference generation in power supply feedback loops and I/O protection networks.
For engineers reviewing the MMBZ5232B-7-F datasheet, MMBZ5232B-7-F pinout, MMBZ5232B-7-F application, or MMBZ5232B-7-F equivalent, key selection criteria include Zener voltage accuracy, low dynamic impedance at rated test current, thermal derating behavior on FR-4 PCB, and compatibility with automated SMT assembly processes under RoHS and halogen-free requirements.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its terminals under controlled current conditions. Its planar die construction ensures consistent breakdown characteristics and low parameter drift over temperature (-65°C to +150°C operating range).
It is characterized at 20mA test current (IZT) with 11Ω Zener impedance (ZZT) and exhibits 5µA reverse leakage (IR) at VR = 3.0V - critical for low-quiescent-current biasing and high-impedance sensing nodes where leakage-induced error must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nominal) | 5.6 V - precise DC reference for feedback networks and voltage monitoring |
| Zener Voltage Range | 5.32–5.88 V - ±5% tolerance ensures predictable clamping threshold in production |
| Zener Impedance (ZZT) | 11 Ω @ 20 mA - low dynamic resistance maintains regulation stability under load variation |
| Power Dissipation | 350 mW on FR-4 PCB - defines maximum continuous power handling before thermal derating applies |
| Reverse Leakage Current | 5 µA @ 3.0 V - minimal parasitic current preserves accuracy in high-impedance reference paths |
| Thermal Resistance (RθJA) | 357 °C/W - quantifies junction-to-ambient thermal path for board-level thermal design |
| Operating Temperature | -65°C to +150°C - supports industrial and automotive under-hood applications |
Pinout & Package
Package: SOT23 - compact 3-pin surface-mount plastic package with matte tin-plated alloy 42 leadframe, UL 94V-0 rated molding compound, and moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal / cathode reference ground | Connected to system ground or lower-potential node during Zener operation |
| Cathode (Pin 2) | Zener breakdown terminal / regulated output node | Provides stable 5.6V reference when reverse-biased above breakdown threshold |
| No Connection (Pin 3) | Internal die attach flag / mechanical support | Not electrically connected; serves structural role in SOT23 leadframe assembly |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable Zener voltage distribution and long-term parametric stability |
| 350mW dissipation on FR-4 | Enables use in space-constrained consumer and industrial PCBs without heatsinking |
| Lead-free & RoHS 3 compliant | Meets global environmental regulations including EU Directive 2015/863/EU |
| Halogen- and antimony-free | Contains <900ppm Br, <900ppm Cl (<1500ppm total Br+Cl), <1000ppm Sb |
| SOT23 tape-and-reel packaging | Supports high-speed pick-and-place assembly with 3,000-unit reels (-7-F suffix) |
Applications
| Power Supply Feedback | IO Port ESD Protection |
|---|---|
|
Use Scenario: Regulating output voltage in adjustable linear regulators (e.g., TL431-based supplies) and switching converter feedback dividers. IC Role / Device Role / Timing Role: Precision voltage reference element providing stable 5.6V threshold for error amplifier comparison. Use Value: Maintains ±1% output regulation over line/load/temperature with minimal external components. |
Use Scenario: Clamping transient voltages on microcontroller GPIO, UART, and I²C lines exposed to ESD events. IC Role / Device Role / Timing Role: Low-capacitance shunt protector that activates at 5.6V to divert surge current away from sensitive inputs. Use Value: Limits peak voltage to ≤6.0V during 8kV HBM ESD strikes while adding <2pF capacitance to signal path. |
| Reference Voltage Source | Overvoltage Detection Circuit |
|
Use Scenario: Generating stable bias points for op-amp comparators, ADC references, and sensor excitation circuits. IC Role / Device Role / Timing Role: Low-drift DC reference node with 5µA leakage ensuring minimal loading on high-Z sources. Use Value: Delivers 5.6V ±5% accuracy without trimming, reducing BOM count and calibration steps. |
Use Scenario: Detecting input overvoltage conditions in battery-powered equipment and USB-C PD adapters. IC Role / Device Role / Timing Role: Threshold detector triggering shutdown logic when supply exceeds safe 5.6V limit. Use Value: Enables fast response (<100ns) to overvoltage transients with no external active components required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C5V6 | Same 5.6V nominal Zener, but 300mW rating and higher ZZT (20Ω @ 5mA) | Lower power margin and reduced regulation precision under varying load current | Acceptable for cost-sensitive non-critical biasing where 350mW headroom is not required |
| MMBZ5232BS-7-F | SOT-23 variant with same electrical specs but optimized for enhanced moisture resistance (MSL 1 confirmed) | Identical functional performance; preferred for high-humidity or reflow-intensive manufacturing | Select when extended storage life or multiple reflow cycles are required in production |
Compared with BZX84-C5V6 and MMBZ5232BS-7-F, the MMBZ5232B-7-F offers superior power handling (350mW vs. 300mW), lower dynamic impedance (11Ω vs. 20Ω), and guaranteed halogen-free compliance - making it optimal for thermally constrained, high-accuracy, and environmentally regulated designs.
Availability
MMBZ5232B-7-F is available at Aetrix Electronics and suitable for power supply feedback networks, IO port protection circuits, precision reference generation, and overvoltage detection systems requiring stable component supply and full traceability.
Supply support for MMBZ5232B-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, industry-standard components for power management, signal integrity, and protection applications.
This device belongs to the MMBZ52xxB series of 350mW Zener diodes, engineered specifically for automated SMT assembly and high-volume consumer, industrial, and automotive electronics requiring consistent voltage regulation and robust environmental compliance.
FAQ
What is the maximum continuous Zener current for MMBZ5232B-7-F at 25°C ambient?
The absolute maximum Zener current is derived from its 350mW power rating and 5.6V nominal voltage: IMAX = 350mW ÷ 5.6V ≈ 62.5mA. However, sustained operation above 20mA requires thermal derating per Figure 1, and long-term reliability is optimized below 50mA with adequate PCB copper area.
Does MMBZ5232B-7-F meet AEC-Q200 stress testing requirements?
No - this part is not automotive-qualified. Diodes Incorporated offers Q-suffix variants (e.g., MMBZ5232BQ-7-F) qualified to AEC-Q200, manufactured in IATF 16949 certified facilities, and PPAP capable. The -7-F version is intended for commercial and industrial applications.
How does the 11Ω Zener impedance affect regulation accuracy under load variation?
At 20mA test current, 11Ω impedance means a 1mA change in Zener current causes ~11mV output shift. This enables tight regulation in feedback loops where current variation remains within ±2mA - typical in TL431 or op-amp comparator configurations with stable bias resistors.
Can MMBZ5232B-7-F be used in bidirectional TVS configurations?
No - it is a unidirectional Zener diode optimized for reverse-bias regulation only. For bidirectional transient suppression, Diodes Incorporated recommends dedicated TVS arrays like D24Z5.6M or SMAJ5.0A, which provide symmetrical clamping in both polarities with defined peak pulse power ratings.
MMBZ5232B-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.6 V
- Tolerance:
- ±5%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 11 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3 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-23-3
MMBZ5232B-7-F FAQ
1.How can I place an order for MMBZ5232B-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5232B-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 MMBZ5232B-7-F reliable?
The price and inventory of MMBZ5232B-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 MMBZ5232B-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5232B-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5232B-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5232B-7-F?
MMBZ5232B-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5232B-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 MMBZ5232B-7-F?
For technical support, including MMBZ5232B-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5232B-7-F requirements.
6.How does Aetrix verify that MMBZ5232B-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5232B-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 MMBZ5232B-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5232B-7-F?
All MMBZ5232B-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5232B-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 MMBZ5232B-7-F part is unused and in its original packaging.
Return procedure for MMBZ5232B-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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