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Diodes Incorporated DDZ5V1B-7
- Part No.:
- DDZ5V1B-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
DDZ5V1B-7.pdf
- Description:
- DIODE ZENER 5.1V 470MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:69,127
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Product details
Overview
DDZ5V1B-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 5.1 V, ±2.5% tolerance (4.94–5.20 V), 17 Ω dynamic impedance at 20 mA test current, and 1 µA maximum reverse leakage at 1.5 V. It operates in SOD123 package, supports 470 mW power dissipation at 25°C ambient, and is optimized for voltage reference and regulation in low-power analog circuits.
For engineers reviewing the DDZ5V1B-7 datasheet, DDZ5V1B-7 pinout, DDZ5V1B-7 application, or DDZ5V1B-7 equivalent, key selection criteria include tight VZ tolerance, low ZZT, stable temperature coefficient (≈−0.02%/°C near 5.1 V), and SOD123 footprint compatibility with automated PCB assembly.
Technical Context
This Zener diode functions as a two-terminal shunt voltage reference, maintaining stable output voltage across varying load currents by operating in reverse breakdown. Its low 17 Ω zener impedance at IZT = 20 mA ensures minimal voltage deviation under moderate current changes.
The device exhibits a near-zero temperature coefficient (~−0.02%/°C) at 5.1 V, minimizing drift over −65°C to +150°C operating range. Its SOD123 package provides thermal resistance of 266°C/W (Note 7 layout) and moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.94–5.20 V at IZT = 20 mA - enables precise 5.1 V reference with ±2.5% initial accuracy |
| Zener Impedance (ZZT) | 17 Ω at f = 1 kHz, IZT = 20 mA - ensures <17 mV output shift per 1 mA load change |
| Reverse Leakage (IR) | 5 µA max at VR = 1.5 V - guarantees low quiescent current in standby reference circuits |
| Power Dissipation (PD) | 470 mW at TA = +25°C (FR-4, 1 in² copper) - supports continuous operation up to ~94 mA at 5.1 V |
| Thermal Resistance (RθJA) | 266°C/W - requires minimal board copper area for thermal management in space-constrained designs |
| Operating Temperature | −65°C to +150°C - suitable for industrial and automotive under-hood environments |
| Package | SOD123 - 2.65 mm × 1.55 mm × 1.05 mm footprint compatible with standard pick-and-place equipment |
Pinout & Package
DDZ5V1B-7 uses a 2-terminal SOD123 surface-mount package with cathode indicated by a band on the body. Terminals are matte tin-annealed alloy 42 leads, solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit ground or lower-potential rail; defines reference return path |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 5.1 V output when reverse-biased; marked with cathode band |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±2.5% (4.94–5.20 V) - reduces need for post-calibration in voltage reference designs |
| Low dynamic impedance | 17 Ω at 20 mA - maintains regulation stability under dynamic load transients |
| Near-zero TC at 5.1 V | ≈−0.02%/°C - minimizes output drift across industrial temperature range |
| Automated assembly compatibility | SOD123 package with J-STD-020 Level 1 moisture rating - eliminates bake requirements before reflow |
| Green, RoHS-compliant construction | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) - meets automotive and industrial environmental mandates |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Reference |
|---|---|
|
Use Scenario: Providing stable bias voltage for op-amp input stages in 4–20 mA loop-powered temperature transmitters. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise 5.1 V common-mode level for signal amplification and ADC interface. Use Value: Tight 4.94–5.20 V tolerance and low 17 Ω ZZT ensure <±1 LSB error in 12-bit sensor digitization over −40°C to +85°C. |
Use Scenario: Generating accurate 5 V reference for USB-C PD controller feedback divider in portable chargers. IC Role / Device Role / Timing Role: Precision voltage reference setting VBUS regulation threshold in buck-boost power stage control loop. Use Value: Near-zero TC and 1 µA leakage at 1.5 V prevent reference drift during intermittent load switching, maintaining ±5% VBUS compliance. |
| Automotive Body Control Module (BCM) | Medical Wearable Battery Monitor |
|
Use Scenario: Supplying reference voltage for LIN bus transceiver supply monitoring in door module ECUs. IC Role / Device Role / Timing Role: Zener clamp and reference source for undervoltage lockout (UVLO) comparator input. Use Value: AEC-Q101 qualification and −65°C to +150°C operation ensure reliable UVLO triggering across cold-cranking and engine-off thermal soak conditions. |
Use Scenario: Establishing reference for fuel gauge IC's battery voltage measurement in Bluetooth-enabled ECG patches. IC Role / Device Role / Timing Role: Low-power shunt reference enabling <1 µA quiescent current in always-on battery monitoring path. Use Value: 5 µA max reverse leakage at 1.5 V and 0.01 g weight minimize parasitic drain, extending 7-day wearable runtime by >3%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C5V1 | ±5% VZ tolerance (4.8–5.4 V), 60 Ω ZZT at 5 mA, SOT-23 package | Higher impedance and looser tolerance reduce accuracy in precision references | Select when cost sensitivity outweighs regulation stability; verify layout thermal relief for 350 mW derating |
| MMSZ5222BS | ±5% VZ, 17 Ω ZZT at 20 mA, but rated only to +150°C junction (not storage), SOD-123 | Lacks AEC-Q101 qualification and halogen-free certification | Acceptable for commercial-grade consumer devices; avoid in automotive or medical BOMs requiring full compliance traceability |
Compared with BZX84-C5V1 and MMSZ5222BS, DDZ5V1B-7 delivers tighter tolerance, lower leakage, and full automotive qualification-making it preferred for safety-critical voltage references where long-term stability and regulatory compliance are mandatory.
Availability
DDZ5V1B-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C power delivery reference, automotive body control modules, and medical wearable battery monitoring requiring stable component supply and full RoHS/halogen-free compliance.
Supply support for DDZ5V1B-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 facilities across Asia and the Americas.
The DDZ series targets high-precision, low-drift voltage reference applications in automotive, industrial, and medical systems-designed specifically for tight-tolerance Zener performance in compact SOD123 packaging.
FAQ
What is the maximum reverse current specification for DDZ5V1B-7 at 1.5 V?
The maximum reverse current (IR) for DDZ5V1B-7 is 5 µA at VR = 1.5 V, per Electrical Characteristics Table on page 2 of DS30407 Rev. 21-2. This low leakage ensures minimal power loss in always-on reference circuits and supports ultra-low-quiescent-current designs.
Is DDZ5V1B-7 qualified for automotive use?
DDZ5V1B-7 is the commercial-grade version; the automotive-qualified variant is DDZ5V1BQ-7. The Q-suffix part is AEC-Q101 qualified, PPAP capable, and manufactured in IATF16949-certified facilities-required for functional safety applications in vehicle ECUs.
How does the SOD123 package affect thermal performance?
In the SOD123 package, DDZ5V1B-7 achieves RθJA = 266°C/W on a 1 in² FR-4 copper pad (Note 7). With 470 mW rated power at 25°C, this allows ~125°C junction rise at full load-requiring no additional heatsinking in typical low-power reference layouts.
What is the temperature coefficient behavior near 5.1 V?
Per Figure 16 in DS30407, DDZ5V1B exhibits a temperature coefficient of approximately −0.02%/°C at 5.1 V. This near-zero TC minimizes output voltage drift across −65°C to +150°C, making it ideal for applications demanding stable reference over wide ambient ranges.
DDZ5V1B-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- ±3%
- Power - Max:
- 470 mW
- Impedance (Max) (Zzt):
- 17 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1.5 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:
- SOD-123
DDZ5V1B-7 FAQ
1.How can I place an order for DDZ5V1B-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ5V1B-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 DDZ5V1B-7 reliable?
The price and inventory of DDZ5V1B-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ5V1B-7 is usually 5 days.
3.What payment methods are accepted for DDZ5V1B-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ5V1B-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ5V1B-7?
DDZ5V1B-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ5V1B-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 DDZ5V1B-7?
For technical support, including DDZ5V1B-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ5V1B-7 requirements.
6.How does Aetrix verify that DDZ5V1B-7 is sourced from the original manufacturer or authorized distributors?
All DDZ5V1B-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 DDZ5V1B-7 meets industry standards.
7.What is the process for return or replacement of DDZ5V1B-7?
All DDZ5V1B-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ5V1B-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 DDZ5V1B-7 part is unused and in its original packaging.
Return procedure for DDZ5V1B-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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