My Inquiry
My Account
Diodes Incorporated MMSZ5230BS-7
- Part No.:
- MMSZ5230BS-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
MMSZ5230BS-7.pdf
- Description:
- DIODE ZENER 4.7V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,310
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MMSZ5230BS-7 from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 4.7 V, ±5% tolerance (4.47–4.94 V), 200 mW power dissipation, and 19 Ω dynamic impedance at 20 mA test current. It operates from –65 °C to +150 °C and is used for precision voltage regulation and reference in low-power analog circuits, such as sensor biasing and ADC reference stabilization.
For engineers reviewing the MMSZ5230BS-7 datasheet, MMSZ5230BS-7 pinout, MMSZ5230BS-7 application, or MMSZ5230BS-7 equivalent, key selection factors include its SOD-323 package footprint, 5 µA reverse leakage at 2.0 V, 0.9 V forward voltage at 10 mA, thermal resistance of 625 °C/W, and RoHS-compliant lead-free plating.
Technical Context
This Zener diode employs planar die construction for stable breakdown characteristics and tight voltage tolerance across temperature. Its 200 mW power rating and 625 °C/W junction-to-ambient thermal resistance are defined under JEDEC-standard FR-4 PCB mounting with recommended pad layout (AP02001).
The device delivers 4.7 V regulation with 19 Ω impedance at IZT = 20 mA and maintains ≤5 µA reverse leakage at VR = 2.0 V - enabling use in low-current reference nodes where stability and minimal loading matter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (Nominal) | 4.7 V - precise DC reference point for analog signal conditioning and voltage clamping |
| Voltage Tolerance | ±5% (4.47–4.94 V) - ensures predictable regulation within industrial-grade accuracy |
| Power Dissipation | 200 mW - supports continuous operation in space-constrained SOD-323 packages without forced cooling |
| Zener Impedance | 19 Ω @ 20 mA - low dynamic resistance minimizes output voltage variation under load changes |
| Reverse Leakage | 5.0 µA @ 2.0 V - negligible current draw in standby, critical for battery-powered reference circuits |
| Forward Voltage | 0.9 V @ 10 mA - enables use as low-drop rectifier or ESD clamp in bidirectional protection schemes |
| Operating Temp | –65 °C to +150 °C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
Package: SOD-323 - ultra-compact 2-pin surface-mount plastic case (2.3–2.7 mm length, 1.2–1.4 mm width, 0.25–0.35 mm thickness), UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration; enables current flow during forward bias or ESD events |
| Cathode (banded end) | Zener breakdown terminal | Connected to higher-potential node; defines polarity for stable 4.7 V reverse breakdown and voltage reference generation |
Key Features
| Feature | Design Value |
|---|---|
| Planar die construction | Ensures repeatable Zener voltage distribution and long-term parameter stability over temperature cycling |
| SOD-323 package | Enables high-density PCB layouts and compatibility with standard 0805-sized pick-and-place equipment |
| Lead-free & RoHS compliant | Meets global environmental regulations without compromising solderability or thermal performance |
| Halogen- and antimony-free "Green" design | Contains <900 ppm Br, <900 ppm Cl, and <1000 ppm Sb - satisfies stringent eco-materials requirements |
Applications
| Industrial Sensor Signal Conditioning | Low-Power ADC Reference |
|---|---|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Zener diode providing fixed 4.7 V reference to op-amp bias network and ratiometric scaling circuitry. Use Value: Tight ±5% voltage tolerance and low 19 Ω impedance ensure <0.1% gain error contribution under varying load currents up to 5 mA. | Use Scenario: Supplying reference voltage to 12-bit SAR ADCs in portable data loggers powered by coin cells. IC Role / Device Role / Timing Role: Low-leakage (5 µA @ 2 V) Zener acting as passive reference source replacing active voltage references to reduce quiescent current. Use Value: Enables sub-10 µA total reference circuit current while maintaining 4.7 V accuracy - extending battery life beyond 5 years. |
| USB Port Overvoltage Clamp | Microcontroller I/O Protection |
Use Scenario: Protecting 5 V USB data lines against transient surges from hot-plug or ESD events. IC Role / Device Role / Timing Role: Bidirectional clamping device using forward conduction (0.9 V) and reverse breakdown (4.7 V) to limit line voltage swing. Use Value: Fast response (<1 ns) and low capacitance (~30 pF) prevent signal integrity degradation on full-speed USB 1.1 lines. | Use Scenario: Safeguarding 3.3 V GPIO pins of ARM Cortex-M microcontrollers against accidental 5 V misconnection. IC Role / Device Role / Timing Role: Shunt regulator absorbing fault current when external voltage exceeds 4.7 V, preventing latch-up or oxide damage. Use Value: 200 mW rating sustains 42 mA fault current for >100 ms - sufficient time for system-level fault detection and shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B4V7,115 (Nexperia) | Same 4.7 V nominal, ±5%, SOD-323, but 300 mW rating and 40 Ω ZZT | Higher power margin suits intermittent surge clamping; higher impedance reduces reference precision | Select when robustness to short-duration transients outweighs reference accuracy needs |
| MMBZ5230BS-7-F (Diodes Inc.) | Identical electrical specs, but SOT-23 package (larger footprint, better thermal dissipation) | Preferred for manual rework or higher ambient temperatures (>85 °C) | Choose when board assembly allows larger footprint and thermal management is prioritized over miniaturization |
Compared with BZX384-B4V7,115 and MMBZ5230BS-7-F, the MMSZ5230BS-7 offers optimal balance of size, precision (19 Ω ZZT), and low leakage for space-constrained reference designs - whereas alternatives trade either accuracy, footprint, or thermal capability.
Availability
MMSZ5230BS-7 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable data acquisition systems, USB peripheral protection, and microcontroller I/O safeguarding requiring stable component supply and consistent parametric performance across production lots.
Supply support for MMSZ5230BS-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, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The MMSZ52xxBS series belongs to Diodes' general-purpose Zener diode product line, engineered specifically for compact, low-power voltage regulation and reference applications where SOD-323 footprint, tight tolerance, and green material compliance are essential.
FAQ
What is the maximum reverse voltage this Zener can withstand before breakdown?
The MMSZ5230BS-7 has a nominal Zener voltage of 4.7 V with a guaranteed range of 4.47 V to 4.94 V at 20 mA test current. Breakdown occurs within this band - it is not rated for sustained reverse voltage above 4.94 V. Exceeding this risks irreversible avalanche degradation if power dissipation exceeds 200 mW.
Can this device be used in place of a 5.1 V Zener like MMSZ5231BS?
No - the MMSZ5230BS-7 is specified at 4.7 V (4.47–4.94 V), while MMSZ5231BS is 5.1 V (4.85–5.36 V). Substituting them alters reference voltage by >8%, which exceeds typical analog system tolerances. Circuit recalibration or redesign would be required to maintain accuracy.
Is the SOD-323 package compatible with standard reflow profiles?
Yes - the MMSZ5230BS-7 is qualified for lead-free reflow per J-STD-020D Level 1 moisture sensitivity. Its matte tin finish and Alloy 42 leadframe support peak temperatures up to 260 °C. Recommended profile uses ramp rate ≤3 °C/s, preheat 150–200 °C for 60–120 s, and time above liquidus 60–90 s at 235–245 °C.
Does this Zener diode have specified capacitance for high-frequency applications?
Yes - typical total capacitance is ~30 pF at 0 V bias and 1 MHz (per Figure 4 in DS31038). This value increases slightly with applied reverse voltage. For RF bypass or high-speed clamping, this capacitance must be accounted for in impedance matching and signal integrity analysis.
MMSZ5230BS-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- SOD-323
MMSZ5230BS-7 FAQ
1.How can I place an order for MMSZ5230BS-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for MMSZ5230BS-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 MMSZ5230BS-7 reliable?
The price and inventory of MMSZ5230BS-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MMSZ5230BS-7 is usually 5 days.
3.What payment methods are accepted for MMSZ5230BS-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MMSZ5230BS-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MMSZ5230BS-7?
MMSZ5230BS-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MMSZ5230BS-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 MMSZ5230BS-7?
For technical support, including MMSZ5230BS-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MMSZ5230BS-7 requirements.
6.How does Aetrix verify that MMSZ5230BS-7 is sourced from the original manufacturer or authorized distributors?
All MMSZ5230BS-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 MMSZ5230BS-7 meets industry standards.
7.What is the process for return or replacement of MMSZ5230BS-7?
All MMSZ5230BS-7 units undergo pre-shipment inspection (PSI). If there is an issue with MMSZ5230BS-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 MMSZ5230BS-7 part is unused and in its original packaging.
Return procedure for MMSZ5230BS-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MMSZ5230BS-7 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…
