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Diodes Incorporated D3Z15BF-7
- Part No.:
- D3Z15BF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
D3Z15BF-7.pdf
- Description:
- DIODE ZENER 14.66V 400MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:10,295
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Product details
Overview
D3Z15BF-7 from Diodes Incorporated is a precision 15 V Zener diode in SOD323F package, designed for voltage regulation and reference applications with ±2.2% tolerance (14.34–14.98 V at 5 mA), 400 mW power dissipation on FR-4 PCB, and low 28 pF capacitance-used in power supply feedback loops, ADC reference buffers, and overvoltage protection circuits.
For engineers reviewing the D3Z15BF-7 datasheet, D3Z15BF-7 pinout, D3Z15BF-7 application, or D3Z15BF-7 equivalent, key selection criteria include Zener voltage tolerance, thermal resistance (312.5 °C/W), reverse leakage (≤50 nA at 11 V), temperature coefficient (+12.1 mV/°C), and SOD323F footprint compatibility with high-density PCB layouts.
Technical Context
This discrete Zener diode operates in reverse breakdown mode to maintain stable DC voltage under varying load and temperature conditions. Its tight 2.2% VZ tolerance and +12.1 mV/°C temperature coefficient enable accurate voltage referencing in analog signal chains and feedback networks.
The device exhibits low dynamic impedance (15 Ω at 5 mA) and minimal junction capacitance (28 pF), supporting stable regulation in switching power supplies and noise-sensitive sensor interfaces. Thermal performance is defined for FR-4 PCB mounting with 35 mm × 25 mm pad layout per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 14.34–14.98 V at IZT = 5 mA - defines regulated output range for feedback or reference use |
| Power Dissipation (PD) | 400 mW on FR-4 PCB - sets maximum continuous power handling without derating below 25°C |
| Zener Impedance (ZZT) | 15 Ω at 5 mA - determines regulation stiffness against load current variation |
| Reverse Leakage (IR) | ≤50 nA at VR = 11 V - ensures minimal error current in high-impedance reference nodes |
| Temperature Coefficient | +12.1 mV/°C - quantifies VZ drift over operating temperature range (−65 to +150°C) |
| Junction Capacitance | 28 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise coupling in precision analog paths |
Pinout & Package
Package: SOD323F - surface-mount plastic package with cathode band marking, 0.01 g weight, 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 in shunt regulation configuration |
| Cathode | Zener breakdown terminal / regulated output node | Connected to input voltage source; maintains stable voltage relative to anode during reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage regulation | ±2.2% VZ tolerance enables <1% error in 12-bit ADC references |
| Low thermal resistance | 312.5 °C/W allows operation up to +150°C ambient with 400 mW dissipation |
| Automated assembly compatibility | SOD323F footprint supports standard pick-and-place and reflow processes |
| Green material compliance | Halogen- and antimony-free molding compound meets RoHS 3 and automotive green standards |
Applications
| Power Supply Feedback | ADC Reference Buffer |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback or buck-boost converters via optocoupler-coupled feedback loop. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 15 V threshold to TL431 or similar error amplifier. Use Value: Tight 2.2% VZ tolerance ensures ±0.3% output regulation accuracy across line/load/temperature. |
Use Scenario: Stabilizing reference voltage for 12-bit SAR ADCs in industrial data acquisition systems. IC Role / Device Role / Timing Role: Low-noise, low-capacitance voltage reference source decoupled from noisy digital supply rails. Use Value: 28 pF capacitance and 15 Ω impedance minimize settling time and reference error in multiplexed sampling. |
| Overvoltage Clamp | Microcontroller Reset Circuit |
|
Use Scenario: Protecting 15 V logic inputs or analog front-ends from transient surges exceeding 16 V. IC Role / Device Role / Timing Role: Fast-acting shunt clamp diverting excess current when input exceeds Zener breakdown threshold. Use Value: 400 mW rating sustains 26.7 mA clamping current continuously, enabling robust surge immunity. |
Use Scenario: Generating clean reset signal for ARM Cortex-M microcontrollers during brown-out conditions. IC Role / Device Role / Timing Role: Precision threshold detector triggering external reset IC (e.g., MAX809) at 14.6 V nominal. Use Value: +12.1 mV/°C tempco ensures reset threshold remains within 150 mV over −40 to +85°C industrial range. |
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 |
|---|---|---|---|
| BZX84-C15LT1G | 15 V nominal, ±5% tolerance (14.25–15.75 V), 350 mW PD, 40 Ω ZZT | Higher VZ uncertainty and impedance reduce accuracy in precision references | Acceptable for non-critical clamping where cost is prioritized over regulation stability |
| MMSZ5245B-7-F | 15 V nominal, ±5% tolerance, 500 mW PD, 17 Ω ZZT, SOD-123 package | Larger SOD-123 footprint requires PCB redesign; higher power rating unnecessary for 400 mW use cases | Preferred only when higher power margin or legacy SOD-123 compatibility is required |
Compared with BZX84-C15LT1G and MMSZ5245B-7-F, D3Z15BF-7 delivers tighter voltage tolerance and lower capacitance in a smaller SOD323F package-making it optimal for space-constrained, high-accuracy regulation where thermal and layout efficiency matter.
Availability
D3Z15BF-7 is available at Aetrix Electronics and suitable for power supply feedback loops, ADC reference buffering, overvoltage clamping, and microcontroller reset circuits requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for D3Z15BF-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.
D3Z15BF-7 belongs to the D3Z series of precision Zener diodes engineered specifically for high-stability voltage reference and regulation in automotive, industrial, and communications equipment where tight tolerance and low temperature drift are critical.
FAQ
What is the maximum continuous Zener current for D3Z15BF-7 at 25°C?
The device is rated for 400 mW power dissipation at 25°C ambient. At 15 V nominal Zener voltage, this corresponds to a maximum continuous Zener current of 26.7 mA (400 mW ÷ 15 V). Derating applies above 25°C per the published power derating curve.
Does D3Z15BF-7 meet AEC-Q200 requirements for automotive use?
No-D3Z15BF-7 is not AEC-Q200 qualified. While manufactured in IATF 16949 certified facilities and fully RoHS-compliant, it lacks formal stress testing and qualification documentation required for automotive-grade components. Diodes offers AEC-Q200 variants under separate part numbering.
How does the +12.1 mV/°C temperature coefficient affect regulation accuracy over temperature?
Over a −40°C to +85°C range (125°C ΔT), the coefficient causes ~1.51 V total VZ shift (12.1 mV/°C × 125°C). However, since VZ is 14.66 V typical, this represents ~10.3 ppm/°C drift-within acceptable limits for most industrial references but requiring compensation in metrology-grade designs.
Can D3Z15BF-7 be used in place of a 1N4744A in existing designs?
No-1N4744A is a through-hole DO-41 device rated for 1 W and 14 V nominal. D3Z15BF-7 is a 400 mW, 15 V SOD323F surface-mount part with different thermal behavior, footprint, and tighter tolerance. Direct substitution requires PCB redesign, thermal analysis, and validation of regulation stability under load transients.
D3Z15BF-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):
- 14.66 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 11 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
D3Z15BF-7 FAQ
1.How can I place an order for D3Z15BF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for D3Z15BF-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 D3Z15BF-7 reliable?
The price and inventory of D3Z15BF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D3Z15BF-7 is usually 5 days.
3.What payment methods are accepted for D3Z15BF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D3Z15BF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D3Z15BF-7?
D3Z15BF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D3Z15BF-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 D3Z15BF-7?
For technical support, including D3Z15BF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D3Z15BF-7 requirements.
6.How does Aetrix verify that D3Z15BF-7 is sourced from the original manufacturer or authorized distributors?
All D3Z15BF-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 D3Z15BF-7 meets industry standards.
7.What is the process for return or replacement of D3Z15BF-7?
All D3Z15BF-7 units undergo pre-shipment inspection (PSI). If there is an issue with D3Z15BF-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 D3Z15BF-7 part is unused and in its original packaging.
Return procedure for D3Z15BF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
D3Z15BF-7 Tags
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