My Inquiry
My Account
Diodes Incorporated UDZ5V1B-7
- Part No.:
- UDZ5V1B-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
UDZ5V1B-7.pdf
- Description:
- DIODE ZENER 5.1V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:77,749
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UDZ5V1B-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 4.98–5.20 V, 200 mW power dissipation, 80 Ω zener impedance at 5 mA, and ±2% voltage tolerance. It operates from –65°C to +150°C and is AEC-Q101 qualified for automotive-grade reliability in voltage reference and overvoltage protection circuits.
For engineers reviewing the UDZ5V1B-7 datasheet, UDZ5V1B-7 pinout, UDZ5V1B-7 application, or UDZ5V1B-7 equivalent, key selection criteria include zener voltage tightness (±2%), low dynamic impedance (80 Ω @ 5 mA), SOD323 package compatibility with high-density PCB layouts, and automotive qualification status.
Technical Context
This Zener diode delivers stable voltage regulation via sharp reverse-breakdown characteristics under controlled current conditions. Its 5 mA test current (IZT) and 0.5 mA knee current (IZK) ensure predictable turn-on behavior across temperature and load variations.
The device exhibits a typical temperature coefficient near zero for 5.1 V variants (per Fig. 7), enabling stable reference performance in ambient ranges from –65°C to +150°C. Its 625 °C/W junction-to-ambient thermal resistance assumes FR-4 board mounting with recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.98–5.20 V @ IZT = 5 mA - defines regulated output voltage window under standard test condition |
| Power Dissipation (PD) | 200 mW - maximum continuous power handling on FR-4 board with specified pad layout |
| Zener Impedance (ZZT) | 80 Ω @ 5 mA - low dynamic resistance ensures minimal output voltage variation with current changes |
| Reverse Current (IR) | 2 µA @ VR = 1.5 V - specifies leakage level below breakdown, critical for low-power biasing |
| Operating Temperature | –65°C to +150°C - supports extended industrial and automotive under-hood environments |
| Thermal Resistance (RθJA) | 625 °C/W - quantifies self-heating impact; requires thermal-aware PCB layout for sustained 200 mW operation |
Pinout & Package
Package: SOD323 - ultra-small plastic surface-mount case (1.30 × 1.70 × 0.95 mm), UL 94V-0 rated, lead-free and halogen-free "Green" construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration |
| Cathode (marked with band) | Zener breakdown terminal | Connected to higher-potential node; voltage regulation occurs across cathode-to-anode |
Key Features
| Feature | Design Value |
|---|---|
| Very tight zener voltage tolerance | ±2% at 5 mA - enables accurate voltage references without post-calibration |
| Sharp breakdown knee | IZK = 0.5 mA, ZZK = 500 Ω - ensures stable regulation onset even at low bias currents |
| AEC-Q101 qualification | Qualified for automotive applications - meets stress-test requirements for temperature cycling, HTRB, and ESD |
| SOD323 footprint | 0.004 g weight, 1.30 × 1.70 mm outline - supports high-density routing and automated reflow assembly |
Applications
| Automotive Body Control Module | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 5.1 V reference for microcontroller ADC inputs and CAN transceiver biasing in BCMs. IC Role / Device Role / Timing Role: Precision voltage reference and overvoltage clamp for 5 V rail protection. Use Value: Maintains ADC accuracy across –40°C to +125°C ambient while surviving load-dump transients via low-impedance clamping. | Use Scenario: Regulating excitation voltage for bridge-based pressure/temperature sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-drift voltage reference source for ratiometric sensor interfaces. Use Value: ±2% initial tolerance and <0.05%/°C TC minimize offset drift, improving sensor linearity over wide temperature spans. |
| USB-C Power Delivery Monitor | Medical Portable Diagnostic Device |
Use Scenario: Clamping CC line voltage during USB-C negotiation to prevent controller damage from ESD or misinsertion. IC Role / Device Role / Timing Role: Fast-response overvoltage protector on low-capacitance data lines. Use Value: 2 µA leakage at 1.5 V preserves signal integrity; SOD323 size fits tight CC-line routing constraints. | Use Scenario: Supplying calibrated reference for analog front-end amplifiers in battery-powered ECG/SpO₂ modules. IC Role / Device Role / Timing Role: Low-power, stable voltage reference for precision analog signal chains. Use Value: 200 mW rating allows safe operation at 50 µA–5 mA bias, balancing noise performance and battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C5V1 | 5.1 V ±5%, 300 mW, SOD523 package | Higher power but looser tolerance; smaller footprint increases soldering sensitivity | Prefer when higher power margin is needed and ±5% tolerance is acceptable |
| MMSZ5231B | 5.1 V ±5%, 350 mW, SOD123 package | Larger SOD123 footprint; higher thermal mass improves power handling but reduces density | Choose for manual prototyping or where board space permits larger package |
Compared with BZX584C5V1 and MMSZ5231B, UDZ5V1B-7 offers tighter voltage tolerance (±2% vs. ±5%) and automotive qualification, making it optimal for safety-critical or high-accuracy reference designs where space and thermal constraints align with SOD323.
Availability
UDZ5V1B-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, USB-C PD monitoring circuits, and portable medical diagnostics requiring stable component supply and long-term lifecycle support.
Supply support for UDZ5V1B-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, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The UDZ series belongs to Diodes' precision Zener diode product line, engineered specifically for high-stability voltage reference and overvoltage protection in space-constrained, thermally demanding applications including automotive and industrial electronics.
FAQ
What is the maximum reverse voltage (VR) that UDZ5V1B-7 can block before breakdown?
UDZ5V1B-7 blocks up to 1.5 V in reverse bias while maintaining ≤2 µA leakage current, as specified in the Electrical Characteristics table. This non-breakdown voltage defines its safe operating range below the zener knee and is critical for use in signal-line clamping where sub-threshold isolation is required.
Is UDZ5V1B-7 suitable for use in high-frequency signal path protection?
Yes - with typical total capacitance of ~12 pF at 5 V (per Fig. 6), UDZ5V1B-7 introduces minimal loading on signal lines up to ~100 MHz. Its fast response and low capacitance make it appropriate for protecting USB, I²C, and other low-voltage digital interfaces from ESD and transient overvoltages.
How does the SOD323 package affect thermal performance in continuous operation?
The SOD323 package delivers 625 °C/W junction-to-ambient thermal resistance on FR-4 with recommended pads. At full 200 mW dissipation, this yields ~125°C junction rise above ambient - requiring derating above 25°C ambient or limiting average power in enclosed, high-temperature environments.
Does UDZ5V1B-7 require external current-limiting resistors in all applications?
Yes - like all Zener diodes, UDZ5V1B-7 must be biased with a series resistor to limit current to within its 200 mW power rating and avoid thermal runaway. For 5 mA regulation, a minimum 1 kΩ resistor is typical with a 10 V supply; exact value depends on supply voltage, load current, and desired regulation stability.
UDZ5V1B-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- ±2%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 1.5 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
UDZ5V1B-7 FAQ
1.How can I place an order for UDZ5V1B-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for UDZ5V1B-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 UDZ5V1B-7 reliable?
The price and inventory of UDZ5V1B-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UDZ5V1B-7 is usually 5 days.
3.What payment methods are accepted for UDZ5V1B-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UDZ5V1B-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UDZ5V1B-7?
UDZ5V1B-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UDZ5V1B-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 UDZ5V1B-7?
For technical support, including UDZ5V1B-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UDZ5V1B-7 requirements.
6.How does Aetrix verify that UDZ5V1B-7 is sourced from the original manufacturer or authorized distributors?
All UDZ5V1B-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 UDZ5V1B-7 meets industry standards.
7.What is the process for return or replacement of UDZ5V1B-7?
All UDZ5V1B-7 units undergo pre-shipment inspection (PSI). If there is an issue with UDZ5V1B-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 UDZ5V1B-7 part is unused and in its original packaging.
Return procedure for UDZ5V1B-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UDZ5V1B-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…
