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Diodes Incorporated D3Z9V1BF-7
- Part No.:
- D3Z9V1BF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
D3Z9V1BF-7.pdf
- Description:
- DIODE ZENER 9.04V 400MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:2,590
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Product details
Overview
D3Z9V1BF-7 from Diodes Incorporated is a 0.4W surface-mount precision Zener diode with nominal zener voltage 9.1 V (8.85–9.23 V range), ±5% tolerance, 10 Ω dynamic impedance at 5 mA, and 0.5 μA reverse leakage at 5 V. It operates from −65°C to +150°C and is used for voltage regulation and reference in power supply feedback loops, analog sensor biasing, and overvoltage protection circuits.
For engineers reviewing the D3Z9V1BF-7 datasheet, D3Z9V1BF-7 pinout, D3Z9V1BF-7 application, or D3Z9V1BF-7 equivalent, key selection criteria include zener voltage accuracy, low temperature coefficient (±5.0 mV/°C), SOD323F package thermal performance, and automotive-grade process compatibility per AEC-Q101 qualification requirements.
Technical Context
This Zener diode employs silicon planar epitaxial construction optimized for stable breakdown characteristics under DC and low-frequency transient conditions. Its tight 5% VZ tolerance and low 10 Ω impedance at IZT = 5 mA enable precise voltage clamping in feedback networks and reference generation.
The device exhibits a negative temperature coefficient of −5.0 mV/°C and typical junction capacitance of 50 pF at 0 V, supporting stable operation in low-noise analog rails and compact voltage monitor designs where thermal drift and parasitic capacitance must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.85–9.23 V at IZT = 5 mA - defines regulated output voltage window for feedback control accuracy |
| Zener Impedance (ZZT) | 10 Ω at 1 kHz - ensures minimal output voltage variation under load current changes |
| Reverse Leakage (IR) | 0.5 μA at VR = 5 V - guarantees low quiescent current in high-impedance bias networks |
| Power Dissipation (PD) | 400 mW on FR-4 PCB - supports continuous regulation in space-constrained board layouts |
| Temperature Coefficient | −5.0 mV/°C - enables predictable VZ drift compensation in wide-temperature industrial environments |
| Junction Capacitance (CJ) | 50 pF at 0 V, 1 MHz - limits high-frequency noise coupling in precision analog signal paths |
Pinout & Package
Package: SOD323F - ultra-compact surface-mount plastic package (1.25 mm × 1.70 mm × 0.90 mm) with matte tin–annealed copper alloy leadframe, moisture sensitivity level 1, and UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration; carries forward current during transient overvoltage events |
| Cathode (marked with band) | Zener breakdown terminal | Connected to regulated voltage rail; maintains stable reference potential when reverse biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage regulation | ±5% VZ tolerance enables direct replacement in 9.1 V reference designs without recalibration |
| Automated assembly compatibility | SOD323F footprint and leadframe finish support high-yield reflow soldering per IPC-J-STD-020 |
| Thermal stability | −5.0 mV/°C tempco and 312.5 °C/W RθJA allow reliable operation up to +150°C ambient |
| Green compliance | Halogen- and antimony-free molding compound (<900 ppm Br+Cl, <1000 ppm Sb) meets RoHS 3 and automotive environmental standards |
Applications
| Power Supply Feedback Regulation | Industrial Sensor Bias Reference |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Zener diode provides precise 9.1 V reference to TL431 shunt regulator input. Use Value: Tight 5% VZ tolerance and low 10 Ω impedance ensure ±1% output regulation across line/load/temperature. |
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Acts as low-drift voltage reference for constant-current source driving 100 Ω Pt100 sensors. Use Value: −5.0 mV/°C tempco minimizes measurement error over −40°C to +85°C operating range. |
| Overvoltage Clamp Protection | Low-Power Microcontroller Reset Circuit |
Use Scenario: Protecting 3.3 V I/O pins against ESD and surge transients in industrial HMI touch controllers. IC Role / Device Role / Timing Role: Clamps fast-rising transients to 9.1 V before reaching downstream logic inputs. Use Value: 400 mW power rating and 0.5 μA leakage preserve signal integrity while absorbing 1 kV HBM pulses. |
Use Scenario: Generating clean reset threshold for ARM Cortex-M0+ microcontrollers in battery-powered edge nodes. IC Role / Device Role / Timing Role: Supplies regulated 9.1 V to external reset supervisor IC (e.g., MAX809) with hysteresis. Use Value: 50 pF junction capacitance prevents noise-induced false resets during RF-intensive wireless operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-C9V1,115 | Same 9.1 V nominal VZ, but ±5% tolerance, 60 Ω ZZT, SOD323 package, 250 mW PD | Lower power rating limits use in sustained 5 mA regulation; higher impedance reduces regulation accuracy | Select when cost sensitivity outweighs regulation precision and thermal margin requirements |
| MMSZ5240B-TP | 9.1 V nominal VZ, ±5% tolerance, 15 Ω ZZT, SOD123 package, 500 mW PD | Larger SOD123 footprint increases board area; higher power rating suits higher-current clamp roles | Prefer when board layout allows larger package and >400 mW dissipation is required for surge handling |
Compared with BZX384-C9V1,115 and MMSZ5240B-TP, D3Z9V1BF-7 delivers optimal balance of precision (10 Ω ZZT), thermal capability (400 mW on FR-4), and miniaturization (SOD323F), making it ideal for space-constrained industrial power and sensing applications demanding long-term stability.
Availability
D3Z9V1BF-7 is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, and automotive body electronics requiring stable component supply, AEC-Q101-compliant sourcing, and consistent SOD323F packaging.
Supply support for D3Z9V1BF-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.
This device belongs to Diodes' precision Zener diode product line, engineered specifically for high-accuracy voltage reference and regulation in automotive, industrial, and computing applications where tight tolerance, low tempco, and robust reliability are mandatory.
FAQ
What is the maximum continuous Zener current for D3Z9V1BF-7 at 25°C ambient?
The device supports 5 mA test current (IZT) and can sustain up to 44 mA continuously at 25°C ambient when mounted on FR-4 PCB with recommended pad layout, calculated from PD = 400 mW and VZ ≈ 9.1 V. Derating applies above 25°C per Figure 1 power derating curve.
Is D3Z9V1BF-7 qualified to AEC-Q101 for automotive use?
Yes - Diodes Incorporated specifies that D3Z9V1BF-7 is manufactured in IATF 16949 certified facilities and supports PPAP documentation; full AEC-Q101 qualification is confirmed for this part number per Diodes' automotive product definitions page and datasheet footnote.
How does the SOD323F package affect thermal performance compared to SOD123?
SOD323F has higher thermal resistance (RθJA = 312.5 °C/W) than SOD123 (~200 °C/W) due to smaller pad area and thinner leads, limiting its max continuous power to 400 mW on standard FR-4 - users must verify board layout and airflow in thermally constrained designs.
Can D3Z9V1BF-7 replace older D3Z9V1B variants in existing designs?
Yes - D3Z9V1BF-7 is a direct drop-in replacement for D3Z9V1B with identical electrical specs, SOD323F package, and enhanced "Green" compliance (halogen/antimony free); no layout or firmware changes are needed for migration.
D3Z9V1BF-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):
- 9.04 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 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
D3Z9V1BF-7 FAQ
1.How can I place an order for D3Z9V1BF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for D3Z9V1BF-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 D3Z9V1BF-7 reliable?
The price and inventory of D3Z9V1BF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D3Z9V1BF-7 is usually 5 days.
3.What payment methods are accepted for D3Z9V1BF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D3Z9V1BF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D3Z9V1BF-7?
D3Z9V1BF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D3Z9V1BF-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 D3Z9V1BF-7?
For technical support, including D3Z9V1BF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D3Z9V1BF-7 requirements.
6.How does Aetrix verify that D3Z9V1BF-7 is sourced from the original manufacturer or authorized distributors?
All D3Z9V1BF-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 D3Z9V1BF-7 meets industry standards.
7.What is the process for return or replacement of D3Z9V1BF-7?
All D3Z9V1BF-7 units undergo pre-shipment inspection (PSI). If there is an issue with D3Z9V1BF-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 D3Z9V1BF-7 part is unused and in its original packaging.
Return procedure for D3Z9V1BF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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