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Diodes Incorporated MMBZ5233B-7-F
- Part No.:
- MMBZ5233B-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MMBZ5233B-7-F.pdf
- Description:
- DIODE ZENER 6V 350MW SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,190
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Product details
Overview
MMBZ5233B-7-F from Diodes Incorporated is a 6.0 V ±5% tolerance, 350 mW surface-mount Zener diode in SOT23 package, rated for 20 mA test current with 7 Ω dynamic impedance at 1 kHz and 5 µA reverse leakage at 3.5 V, used for precision voltage regulation and overvoltage protection in low-power analog sensor interfaces.
For engineers reviewing the MMBZ5233B-7-F datasheet, MMBZ5233B-7-F pinout, MMBZ5233B-7-F application, or MMBZ5233B-7-F equivalent, key selection criteria include Zener voltage accuracy at IZT = 20 mA, thermal resistance (357 °C/W on FR-4), JEDEC-compliant reliability, and compatibility with automated SMT assembly processes.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable reference voltage under varying load and temperature conditions. Its planar die construction ensures consistent Zener characteristics and low leakage across -65°C to +150°C operating range.
Designed for low-power regulation, it delivers 6.0 V nominal output with ±5% tolerance (5.70–6.30 V), 7 Ω Zener impedance at 20 mA, and 5.0 µA maximum reverse leakage at VR = 3.5 V - enabling accurate clamping in signal conditioning and power rail supervision circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.0 V nominal, 5.70–6.30 V range at IZT = 20 mA - defines precise clamping threshold for 5 V system rails. |
| Power Dissipation (PD) | 350 mW on FR-4 PCB - supports continuous operation in space-constrained consumer and industrial PCBs. |
| Zener Impedance (ZZT) | 7 Ω at f = 1 kHz, IZT = 20 mA - ensures minimal voltage deviation under dynamic load transients. |
| Reverse Leakage (IR) | 5.0 µA max at VR = 3.5 V - guarantees low quiescent current in battery-powered sensing nodes. |
| Thermal Resistance (RθJA) | 357 °C/W - enables thermal-aware layout with standard SOT23 pad footprint per Diodes' recommended outline. |
| Operating Temperature | -65°C to +150°C - suitable for under-hood automotive modules and industrial control enclosures. |
Pinout & Package
Package: SOT23 - 3-pin surface-mount plastic package with matte tin-plated Alloy 42 leadframe, UL 94V-0 rated molding compound, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward conduction terminal | Connected to lower-potential node during Zener operation; required for correct polarity in reverse-bias regulation. |
| Cathode (Pin 2) | Zener breakdown terminal | Connected to higher-potential node; carries regulated voltage output when reverse biased above VZ. |
| No Connect (Pin 3) | Internal die attach flag | Electrically isolated; serves mechanical support only - must remain unconnected in PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures tight VZ distribution and long-term stability under thermal cycling stress. |
| 350 mW dissipation on FR-4 | Validated with Diodes' recommended pad layout - eliminates need for thermal vias in cost-sensitive designs. |
| Lead-free & RoHS 3 compliant | Fully compliant with EU Directive 2015/863/EU - supports global environmental compliance without derating. |
| Halogen- and antimony-free | <900 ppm Br, <900 ppm Cl, <1000 ppm Sb - meets automotive "Green" material requirements for cabin electronics. |
Applications
| Industrial Sensor Signal Conditioning | USB Port Overvoltage Protection |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 12-bit ADC front-end in temperature/humidity sensor modules. IC Role / Device Role / Timing Role: Zener voltage reference providing 6.0 V bias to op-amp gain stage and ADC reference divider network. Use Value: 7 Ω ZZT minimizes code-to-code variation under supply ripple; ±5% VZ tolerance aligns with 1% resistor networks in ratiometric designs. |
Use Scenario: Clamping transient surges on USB VBUS line during hot-plug events in portable docking stations. IC Role / Device Role / Timing Role: Fast-response shunt protector diverting >100 V spikes to ground before reaching USB controller IC. Use Value: 5.0 µA leakage at 3.5 V prevents false triggering; 350 mW rating handles 8/20 µs surge pulses per IEC 61000-4-5 Level 3. |
| Automotive Cabin Control Panel | Low-Power IoT Node Power Supervision |
|
Use Scenario: Regulating 5 V microcontroller supply rail in HVAC control head exposed to 12 V battery transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp limiting rail excursion to ≤6.3 V during load-dump events. Use Value: -65°C to +150°C rating supports under-dash mounting; AEC-Q200 qualification path available via Q-suffix variant. |
Use Scenario: Monitoring coin-cell voltage in BLE-enabled asset trackers to trigger low-battery alerts. IC Role / Device Role / Timing Role: Precision voltage threshold detector comparing cell voltage against 6.0 V Zener reference. Use Value: 5.0 µA leakage preserves battery life over 5-year deployment; 6.0 V VZ maps directly to 2.8 V cutoff for CR2032 cells via resistive divider. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C6V2 (ON Semiconductor) | 6.2 V nominal, ±5% tolerance, 300 mW PD, 10 Ω ZZT at 5 mA | Higher VZ and lower power rating - less suitable for 5 V rail clamping where margin is tight | Select when 6.2 V threshold is preferred and thermal budget allows reduced derating. |
| MMSZ5233B (Vishay) | 6.0 V nominal, ±5%, 500 mW PD, 7 Ω ZZT at 20 mA, SOD-123 package | Larger SOD-123 footprint - incompatible with high-density SOT23 layouts but offers higher power handling | Choose for designs requiring >350 mW dissipation and board real estate permits larger package. |
Compared with BZX84-C6V2 and MMSZ5233B, MMBZ5233B-7-F uniquely balances 6.0 V accuracy, SOT23 miniaturization, and 350 mW FR-4-rated dissipation - making it optimal for compact, thermally constrained 5 V system regulation where pin-for-pin SMT compatibility is mandatory.
Availability
MMBZ5233B-7-F is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB port protection circuits, automotive cabin controls, and low-power IoT node supervision requiring stable component supply and full traceability.
Supply support for MMBZ5233B-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 components for automotive, industrial, and consumer markets.
This device belongs to the MMBZ52xxB series of 350 mW Zener diodes designed specifically for precision voltage reference and overvoltage protection in automated SMT environments - emphasizing JEDEC reliability, green material compliance, and tight parametric consistency.
FAQ
What is the maximum reverse voltage (VR) at which leakage current is specified?
The MMBZ5233B-7-F specifies 5.0 µA maximum reverse leakage current at VR = 3.5 V, not at its Zener voltage. This value ensures minimal standby current in low-power applications where the device operates below breakdown but must remain highly blocking.
Can this Zener diode be used in series for higher voltage references?
Yes - multiple MMBZ5233B-7-F units may be stacked in series to achieve higher reference voltages, but total Zener impedance increases linearly and thermal coupling between devices must be managed to avoid drift; parallel use is not recommended due to mismatched VZ tolerances.
Is the SOT23 package lead-free and RoHS compliant?
Yes - the MMBZ5233B-7-F uses matte tin finish over Alloy 42 leadframe and halogen-free molding compound, meeting EU RoHS Directive 2015/863/EU and carrying full "Green" certification with <900 ppm bromine/chlorine and <1000 ppm antimony.
Does this part have automotive qualification?
The base MMBZ5233B-7-F is not AEC-Q200 qualified, but Diodes offers automotive-grade variants with Q-suffix (e.g., MMBZ5233BQ-7-F) manufactured in IATF 16949-certified facilities and PPAP-capable - these are required for safety-critical vehicle subsystems.
MMBZ5233B-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):
- 6 V
- Tolerance:
- ±5%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 3.5 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
MMBZ5233B-7-F FAQ
1.How can I place an order for MMBZ5233B-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5233B-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 MMBZ5233B-7-F reliable?
The price and inventory of MMBZ5233B-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 MMBZ5233B-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5233B-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5233B-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5233B-7-F?
MMBZ5233B-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5233B-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 MMBZ5233B-7-F?
For technical support, including MMBZ5233B-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5233B-7-F requirements.
6.How does Aetrix verify that MMBZ5233B-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5233B-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 MMBZ5233B-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5233B-7-F?
All MMBZ5233B-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5233B-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 MMBZ5233B-7-F part is unused and in its original packaging.
Return procedure for MMBZ5233B-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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