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Diodes Incorporated D3Z30BF-7
- Part No.:
- D3Z30BF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
D3Z30BF-7.pdf
- Description:
- DIODE ZENER 29.94V 400MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:400
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Product details
Overview
D3Z30BF-7 from Diodes Incorporated is a precision 30 V Zener diode in SOD323F package, rated for 400 mW power dissipation on FR-4 PCB, with ±3.2% tolerance (29.19–30.69 V at 5 mA), 40 Ω dynamic impedance at 5 mA, and −23 mV/°C temperature coefficient. It serves as a stable voltage reference in low-power analog monitoring circuits.
For engineers reviewing the D3Z30BF-7 datasheet, D3Z30BF-7 pinout, D3Z30BF-7 application, or D3Z30BF-7 equivalent, key selection criteria include Zener voltage accuracy, thermal stability in compact layouts, low leakage (<0.05 μA at 23 V), and compatibility with automated SMT assembly on space-constrained boards.
Technical Context
This device operates in reverse-biased breakdown mode to maintain precise DC voltage regulation under varying load and temperature conditions. Its tight VZ tolerance and low temperature coefficient ensure minimal drift across −65°C to +150°C operating range.
The SOD323F package enables high-density placement while delivering 312.5°C/W junction-to-ambient thermal resistance on standard FR-4 PCBs. Cathode band marking and matte tin-plated terminals support reliable solderability per MIL-STD-202.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 29.19–30.69 V at 5 mA - defines regulated output voltage window for reference design |
| Power Dissipation (PD) | 400 mW on FR-4 - sets maximum continuous current limit (~13.3 mA at 30 V) |
| Zener Impedance (ZZT) | 40 Ω at 5 mA - determines output voltage variation under load transients |
| Reverse Leakage (IR) | <0.05 μA at 23 V - ensures negligible error current in high-impedance bias networks |
| Temp. Coefficient (TC) | −23 mV/°C - quantifies voltage drift per degree Celsius near room temperature |
| Total Capacitance | 17 pF at 0 V - impacts high-frequency noise coupling in filtering applications |
| Forward Voltage (VF) | 0.9 V at 10 mA - relevant for polarity-check or dual-direction protection use cases |
Pinout & Package
Package: SOD323F - surface-mount plastic package with cathode band marking, 0.01 g mass, UL 94V-0 rating, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during regulation |
| Cathode | Reverse breakdown terminal / Zener voltage output | Delivers regulated 30 V when biased above breakdown threshold |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage reference | ±3.2% VZ tolerance enables accurate analog sensing without trimming |
| Automated assembly compatibility | SOD323F footprint and matte tin terminals ensure consistent reflow yield |
| Thermal stability | −23 mV/°C TC minimizes calibration drift in industrial ambient ranges |
| Green compliance | Halogen- and antimony-free compound meets RoHS 3 and IATF 16949 automotive requirements |
Applications
| Industrial Sensor Signal Conditioning | Low-Power Microcontroller Reference |
|---|---|
Use Scenario: Stabilizing ADC reference voltage in battery-powered environmental sensors. IC Role / Device Role / Timing Role: Zener diode provides fixed 30 V reference for rail-to-rail op-amp gain stages. Use Value: Tight 3.2% tolerance and low 0.05 μA leakage preserve measurement accuracy over 10-year field life. | Use Scenario: Supplying clean bias voltage to analog comparators in smart metering SoCs. IC Role / Device Role / Timing Role: Voltage clamp establishes known threshold for overvoltage detection logic. Use Value: −23 mV/°C TC ensures trip point remains within ±1.2% across −40°C to +85°C operating range. |
| Automotive Cabin Control Panel | Medical Wearable Power Monitoring |
Use Scenario: Regulating supply to touch controller ICs in HVAC interface modules. IC Role / Device Role / Timing Role: Precision shunt regulator maintains stable 30 V for capacitive sensing front-end. Use Value: AEC-Q101 qualification readiness and 150°C max TJ support under-hood reliability. | Use Scenario: Calibrating battery voltage monitor in ECG patch devices. IC Role / Device Role / Timing Role: Low-capacitance (17 pF) Zener avoids signal distortion in high-impedance divider networks. Use Value: 17 pF capacitance prevents phase shift in 10 kHz sampling paths used for real-time battery health analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B30,115 | Same 30 V nominal, but ±5% tolerance (28.5–31.5 V); 300 mW rating; SOD323 package | Higher VZ uncertainty increases calibration overhead in metrology-grade designs | Prefer for cost-sensitive consumer applications where ±5% is acceptable |
| MMSZ5256ET1G | 30 V nominal, ±5% tolerance; 500 mW rating; SOD-123 package; higher 100 Ω ZZT | Larger SOD-123 footprint reduces board density; higher impedance degrades transient response | Choose only when higher power margin (>400 mW) is required and layout space permits |
Compared with BZX384-B30 and MMSZ5256ET1G, D3Z30BF-7 delivers tighter voltage control, lower thermal drift, and superior SMT process compatibility in ultra-compact layouts-making it optimal for high-accuracy, space-constrained embedded systems.
Availability
D3Z30BF-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, automotive cabin controls, and medical wearable power monitoring requiring stable component supply across extended product lifecycles.
Supply support for D3Z30BF-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, specializing in high-reliability components for industrial, automotive, and computing markets.
The D3Z series targets precision voltage reference applications demanding tight tolerances, low temperature coefficients, and robust SMT manufacturability in miniaturized designs.
FAQ
What is the maximum continuous Zener current for D3Z30BF-7 at 25°C?
The device supports up to 13.3 mA continuous Zener current at 25°C, calculated from its 400 mW power rating and typical 30 V breakdown voltage (IZ = PD/VZ). Derating is required above 25°C per the published power derating curve, reaching zero dissipation at 150°C ambient.
Does D3Z30BF-7 meet automotive qualification standards?
D3Z30BF-7 is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While not pre-qualified to AEC-Q101, Diodes offers automotive-grade variants of this series upon request with full stress testing and change control-contact Aetrix for qualified part numbers.
How does the −23 mV/°C temperature coefficient affect circuit performance?
A −23 mV/°C coefficient means the Zener voltage decreases by 23 mV per degree Celsius rise in junction temperature. Over a 100°C range (−25°C to +75°C), this results in ~2.3 V total drift-requiring compensation in high-precision references but acceptable for general-purpose regulation where ±5% tolerance suffices.
Can D3Z30BF-7 be used in bidirectional ESD protection?
No-D3Z30BF-7 is a unidirectional Zener diode optimized for reverse-bias voltage regulation. Its forward voltage is 0.9 V at 10 mA, but it lacks the symmetric clamping characteristics, low dynamic resistance, and specified ESD pulse handling of dedicated TVS diodes like the D3V3FQ-7.
D3Z30BF-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-90, SOD-323F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 29.94 V
- Tolerance:
- ±3%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 23 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 100 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323F
D3Z30BF-7 FAQ
1.How can I place an order for D3Z30BF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for D3Z30BF-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 D3Z30BF-7 reliable?
The price and inventory of D3Z30BF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D3Z30BF-7 is usually 5 days.
3.What payment methods are accepted for D3Z30BF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D3Z30BF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D3Z30BF-7?
D3Z30BF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D3Z30BF-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 D3Z30BF-7?
For technical support, including D3Z30BF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D3Z30BF-7 requirements.
6.How does Aetrix verify that D3Z30BF-7 is sourced from the original manufacturer or authorized distributors?
All D3Z30BF-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 D3Z30BF-7 meets industry standards.
7.What is the process for return or replacement of D3Z30BF-7?
All D3Z30BF-7 units undergo pre-shipment inspection (PSI). If there is an issue with D3Z30BF-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 D3Z30BF-7 part is unused and in its original packaging.
Return procedure for D3Z30BF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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