My Inquiry
My Account
Diodes Incorporated MMBZ5230BW-7-F
- Part No.:
- MMBZ5230BW-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
MMBZ5230BW-7-F.pdf
- Description:
- DIODE ZENER 4.7V 200MW SOT323
- Quantity:
- Payment:
- Shipping:
Inventory:2,302
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMBZ5230BW-7-F from Diodes Incorporated is a 4.7 V, 200 mW surface-mount Zener diode in SOT323 package, with nominal Zener voltage tolerance ±5%, dynamic impedance 19 Ω at 20 mA test current, and maximum reverse leakage of 5.0 μA at 2.0 V. It provides precision voltage regulation in low-power signal conditioning and power rail clamping circuits.
For engineers reviewing the MMBZ5230BW-7-F datasheet, MMBZ5230BW-7-F pinout, MMBZ5230BW-7-F application, or MMBZ5230BW-7-F equivalent, key selection criteria include Zener voltage accuracy, low dynamic impedance at rated test current, thermal resistance (625 °C/W), RoHS-compliant lead-free plating, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable voltage across its terminals under varying load or supply conditions. Its 4.7 V nominal Zener voltage is specified at 20 mA test current, with tight 4.47–4.94 V min/max range and 19 Ω dynamic impedance measured at 1 kHz.
Designed for surface-mount assembly on FR4 PCBs using recommended pad layout AP02001, it features matte tin-plated Alloy 42 leads, moisture sensitivity level 1, and UL 94V-0 mold compound. Thermal derating begins above +25°C ambient per Figure 1, with full 200 mW dissipation only at TA ≤ +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nom) | 4.7 V - stable regulation point at 20 mA test current |
| Zener Voltage Range | 4.47–4.94 V - ±5% tolerance band defining usable regulation window |
| Power Dissipation | 200 mW - max continuous DC power at TA = +25°C on FR4 board |
| Zener Impedance | 19 Ω @ 20 mA - low dynamic resistance ensures minimal voltage shift under load variation |
| Reverse Leakage | 5.0 μA @ 2.0 V - low off-state current preserves signal integrity in high-impedance bias networks |
| Thermal Resistance | 625 °C/W - junction-to-ambient value used to calculate temperature rise under actual power dissipation |
| Package | SOT323 - 3-pin small-outline transistor outline, 2.1 mm × 1.3 mm footprint |
Pinout & Package
Package: SOT323 - ultra-compact plastic surface-mount package with gull-wing leads, 0.65 mm pitch, 0.006 g weight, and UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / cathode reference | Connected to lower potential side in Zener operation; defines polarity for correct reverse-bias mounting |
| Cathode | Breakdown voltage reference terminal | Connected to higher potential side; voltage measured relative to anode during regulation |
| Case / Heat Sink | Non-electrical mechanical termination | No internal connection; serves only structural role-no thermal or electrical function |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics applications requiring high-reliability stress testing |
| Lead-free & RoHS compliant | Meets EU Directive 2011/65/EU with <900 ppm Br/Cl and <1000 ppm Sb compounds |
| Low Zener impedance | 19 Ω enables stable regulation under dynamic load transients up to 20 mA |
| SOT323 package | Enables high-density PCB layouts and compatibility with standard pick-and-place equipment |
Applications
| Automotive Sensor Signal Conditioning | Industrial PLC Input Protection |
|---|---|
Use Scenario: Clamping analog sensor outputs (e.g., thermistor bridges) against ESD and overvoltage events in engine control modules. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage clamp on signal line, referenced to ground. Use Value: Limits transient excursions to ≤4.94 V, protecting downstream ADC inputs without loading the sensor source. | Use Scenario: Protecting 24 V digital input channels in programmable logic controllers from field-wiring surges. IC Role / Device Role / Timing Role: Reverse-biased Zener providing overvoltage clamping at 4.7 V reference node tied to optocoupler LED anode. Use Value: Absorbs surge energy while maintaining logic threshold margin above 2.0 V reverse leakage cutoff. |
| Consumer Power Supply Feedback | Medical Instrument Reference Stabilization |
Use Scenario: Providing precise 4.7 V reference for TL431-based feedback loop in isolated AC/DC adapters. IC Role / Device Role / Timing Role: Secondary-side Zener establishing stable bias for error amplifier reference divider. Use Value: Tight ±5% voltage tolerance ensures consistent output regulation across production batches. | Use Scenario: Stabilizing bias voltage for low-noise instrumentation amplifiers in portable ECG front-ends. IC Role / Device Role / Timing Role: Low-leakage (5.0 μA @ 2.0 V) Zener supplying clean reference to op-amp gain-setting network. Use Value: Minimizes input offset drift caused by reference current injection into high-impedance nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C4V7 | Same 4.7 V nominal Zener, but 350 mW rating and SOT23 package; higher thermal resistance (450 °C/W) | Higher power handling supports larger transient absorption, but larger footprint limits high-density designs | Select when surge robustness outweighs board space constraints |
| MMBZ5230BS | Identical electrical specs, but SOD-323 package (0.8 mm × 1.6 mm vs. SOT323's 1.3 mm × 2.1 mm); same 200 mW rating | Smaller footprint allows tighter routing in space-constrained wearables or hearing aids | Select when PCB area is critical and thermal budget permits smaller case size |
Compared with BZX84-C4V7 and MMBZ5230BS, MMBZ5230BW-7-F offers optimal balance of AEC-Q101 qualification, SOT323 manufacturability, and 200 mW regulation stability-making it preferred for automotive and industrial surface-mount systems where reliability and assembly yield are prioritized.
Availability
MMBZ5230BW-7-F is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC input protection, and consumer power supply feedback circuits requiring stable component supply and long-term lifecycle support.
Supply support for MMBZ5230BW-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, headquartered in Plano, Texas, with design and manufacturing operations across Asia and the Americas.
This part belongs to the MMBZ52xxBW series of 200 mW Zener diodes, designed specifically for precision voltage regulation and overvoltage protection in space-constrained, high-reliability surface-mount applications.
FAQ
What is the maximum reverse voltage before breakdown for MMBZ5230BW-7-F?
The device exhibits sharp reverse breakdown at its nominal Zener voltage of 4.7 V, with guaranteed regulation between 4.47 V (min) and 4.94 V (max) when tested at 20 mA. Below 2.0 V reverse bias, leakage remains ≤5.0 μA-no defined "maximum non-breakdown" voltage is specified, as Zener operation is intentional in this region.
Can MMBZ5230BW-7-F be used in place of a 5.1 V Zener diode?
No-it is not a drop-in replacement for 5.1 V Zeners like MMBZ5231BW. Its 4.47–4.94 V regulation range does not overlap the 4.85–5.36 V range of the 5.1 V part. Substituting would cause incorrect biasing or regulation failure in circuits dependent on precise 5.1 V reference.
Is the SOT323 package compatible with reflow soldering per J-STD-020?
Yes-the device is rated for moisture sensitivity level 1 and qualified for standard Pb-free reflow profiles. Its matte tin finish meets MIL-STD-202 Method 208 solderability requirements, and the "Green" molding compound withstands peak temperatures up to 260°C per JEDEC J-STD-020D.
Does MMBZ5230BW-7-F have polarity markings on the package?
Yes-the SOT323 package uses a molded cathode band (visible as a dark stripe near one end) to identify the cathode terminal. The top-view schematic in the datasheet confirms cathode placement adjacent to the larger leadframe tab, consistent with industry-standard SOT323 polarity orientation.
MMBZ5230BW-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.7 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 19 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 2 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
MMBZ5230BW-7-F FAQ
1.How can I place an order for MMBZ5230BW-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for MMBZ5230BW-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 MMBZ5230BW-7-F reliable?
The price and inventory of MMBZ5230BW-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 MMBZ5230BW-7-F is usually 5 days.
3.What payment methods are accepted for MMBZ5230BW-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMBZ5230BW-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMBZ5230BW-7-F?
MMBZ5230BW-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMBZ5230BW-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 MMBZ5230BW-7-F?
For technical support, including MMBZ5230BW-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMBZ5230BW-7-F requirements.
6.How does Aetrix verify that MMBZ5230BW-7-F is sourced from the original manufacturer or authorized distributors?
All MMBZ5230BW-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 MMBZ5230BW-7-F meets industry standards.
7.What is the process for return or replacement of MMBZ5230BW-7-F?
All MMBZ5230BW-7-F units undergo pre-shipment inspection (PSI). If there is an issue with MMBZ5230BW-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 MMBZ5230BW-7-F part is unused and in its original packaging.
Return procedure for MMBZ5230BW-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMBZ5230BW-7-F Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
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…
