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Diodes Incorporated UDZ10B-7
- Part No.:
- UDZ10B-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
UDZ10B-7.pdf
- Description:
- DIODE ZENER 9.99V 200MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:4,752
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Product details
Overview
UDZ10B-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 9.77–10.21 V at 5 mA, 30 Ω dynamic impedance (ZZT), 0.1 µA maximum reverse leakage at 7.0 V, and 200 mW power dissipation in SOD323 package - used for voltage regulation and reference in low-power analog circuits.
For engineers reviewing the UDZ10B-7 datasheet, UDZ10B-7 pinout, UDZ10B-7 application, or UDZ10B-7 equivalent, key selection criteria include zener voltage tolerance (±2.2%), temperature coefficient (≈+0.06%/°C), thermal resistance (625°C/W), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a two-terminal voltage reference using controlled avalanche breakdown in silicon. Its sharp knee characteristic and tight ±2.2% VZ tolerance enable stable regulation in feedback loops and precision biasing networks.
Designed for operation at IZ = 5 mA, it delivers low dynamic impedance (30 Ω) and minimal temperature drift (+0.06%/°C typical), making it suitable for low-current reference applications where thermal self-heating must be minimized on FR-4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.77–10.21 V @ 5 mA - defines regulated output level with ±2.2% tolerance for accurate reference generation |
| Zener Impedance (ZZT) | 30 Ω @ 5 mA - ensures minimal output voltage variation under load current changes |
| Power Dissipation (PD) | 200 mW - limits continuous operating current to ~20 mA at 10 V, constraining use to low-power circuits |
| Reverse Leakage (IR) | 0.1 µA @ 7.0 V - enables high-impedance sensing nodes without significant error current |
| Thermal Resistance (RθJA) | 625 °C/W - requires careful PCB copper area design to avoid exceeding 150°C junction temperature |
| Temp. Coefficient (TCVZ) | +0.06 %/°C - supports stable reference over -65°C to +150°C ambient range |
| AEC-Q101 Qualified | Yes - validated for automotive electronics including infotainment power rails and sensor biasing |
Pinout & Package
Package: SOD323 - ultra-compact 1.3 mm × 1.7 mm surface-mount case with cathode band marking; weight 0.004 g; UL 94V-0 rated; moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode bias reference | Connected to lower potential node; reverse-biased during regulation |
| Cathode | Zener breakdown terminal / regulated output node | Marked with band; connected to higher potential; supplies stable VZ to load |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±2.2% (9.77–10.21 V) - eliminates need for post-calibration in factory-set references |
| Low dynamic impedance | 30 Ω @ 5 mA - maintains regulation stability across ±1 mA load shifts |
| AEC-Q101 qualification | Validated for automotive temperature cycling, HAST, and mechanical shock - suitable for under-hood ECUs |
| Green construction | Halogen- and antimony-free, RoHS-compliant - meets EU ELV and China RoHS requirements |
| Automated assembly compatibility | SOD323 footprint with matte tin finish - supports high-yield reflow soldering per J-STD-020D Level 1 |
Applications
| Automotive Sensor Biasing | Industrial Analog Reference |
|---|---|
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in engine coolant sensors. IC Role / Device Role / Timing Role: Two-terminal voltage reference supplying fixed 10 V bias to RTD bridge. Use Value: ±2.2% VZ tolerance and +0.06%/°C TCVZ ensure <±0.5% total error over -40°C to +125°C operating range. | Use Scenario: Setting reference voltage for 12-bit ADC input scaling in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision shunt reference establishing 10 V full-scale reference for op-amp gain stages. Use Value: 30 Ω ZZT minimizes code shift under varying signal conditioning load currents up to 1 mA. |
| USB-C Power Negotiation | Low-Power IoT Voltage Monitor |
Use Scenario: Generating 10 V threshold for USB PD sink detection circuitry in portable chargers. IC Role / Device Role / Timing Role: Zener clamp defining overvoltage trip point for CC line monitoring. Use Value: 0.1 µA IR at 7 V prevents false triggering during idle bus states while maintaining fast response. | Use Scenario: Monitoring battery voltage in BLE-enabled asset trackers using comparator hysteresis. IC Role / Device Role / Timing Role: Shunt reference enabling 10 V threshold detection with nanoamp-level quiescent current. Use Value: 200 mW PD allows direct connection to 3.7 V Li-ion cells via series resistor without thermal derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C10LT1G | ±5% VZ tolerance (9.5–10.5 V), 30 Ω ZZT, same SOD323 package | Lower accuracy; not AEC-Q101 qualified | Acceptable for cost-sensitive consumer designs where ±5% regulation suffices |
| MMSZ4686T1G | ±5% VZ (9.5–10.5 V), 30 Ω ZZT, SOD123 package (larger footprint) | Higher thermal resistance (800°C/W); no automotive qualification | Preferred when board space allows larger package and automotive compliance is unnecessary |
Compared with BZX84-C10LT1G and MMSZ4686T1G, UDZ10B-7 provides tighter voltage tolerance and AEC-Q101 validation - critical for automotive and industrial systems requiring long-term stability and qualification traceability.
Availability
UDZ10B-7 is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial analog reference design, and low-power IoT voltage monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for UDZ10B-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 and manufacturing operations across Asia and the Americas.
The UDZ series belongs to Diodes' precision Zener diode product line, engineered specifically for high-stability voltage reference and regulation in space-constrained, thermally demanding environments such as automotive control units and industrial instrumentation.
FAQ
What is the maximum reverse voltage (VR) that UDZ10B-7 can withstand before breakdown?
UDZ10B-7 has a specified maximum reverse current (IR) of 0.1 µA at VR = 7.0 V. This means it maintains negligible leakage up to 7.0 V; breakdown begins near its nominal 9.77–10.21 V range at 5 mA test current. Operation above 7.0 V but below VZ is safe and non-dissipative.
Can UDZ10B-7 be used in series or parallel configurations for higher voltage or current handling?
No - UDZ10B-7 is not designed for series or parallel operation. Its tight VZ tolerance and matched temperature coefficients are not guaranteed across units. For higher voltage, select UDZ12B or UDZ13B; for higher current, use a Zener driver transistor or dedicated shunt regulator IC.
Is the SOD323 package compatible with standard reflow profiles for lead-free soldering?
Yes - UDZ10B-7's matte tin finish and SOD323 package comply with J-STD-020D Level 1 moisture sensitivity and support standard IPC/JEDEC J-STD-020 lead-free reflow profiles (peak 260°C). No pre-bake is required due to its Level 1 rating.
Does UDZ10B-7 exhibit significant capacitance that could affect high-frequency noise filtering?
At 10 V nominal zener voltage, typical total capacitance is ~2.5 pF (per Fig. 6). This low value makes it suitable for DC and low-frequency (<1 MHz) reference applications but unsuitable as an RF bypass or EMI filter - use dedicated ceramic capacitors instead.
UDZ10B-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):
- 9.99 V
- Tolerance:
- ±2.2%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 7 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
UDZ10B-7 FAQ
1.How can I place an order for UDZ10B-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for UDZ10B-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 UDZ10B-7 reliable?
The price and inventory of UDZ10B-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UDZ10B-7 is usually 5 days.
3.What payment methods are accepted for UDZ10B-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UDZ10B-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UDZ10B-7?
UDZ10B-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UDZ10B-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 UDZ10B-7?
For technical support, including UDZ10B-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UDZ10B-7 requirements.
6.How does Aetrix verify that UDZ10B-7 is sourced from the original manufacturer or authorized distributors?
All UDZ10B-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 UDZ10B-7 meets industry standards.
7.What is the process for return or replacement of UDZ10B-7?
All UDZ10B-7 units undergo pre-shipment inspection (PSI). If there is an issue with UDZ10B-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 UDZ10B-7 part is unused and in its original packaging.
Return procedure for UDZ10B-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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