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Diodes Incorporated DDZ15BSF-7
- Part No.:
- DDZ15BSF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
DDZ15BSF-7.pdf
- Description:
- DIODE ZENER 14.26V 500MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:27,156
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Product details
Overview
DDZ15BSF-7 from Diodes Incorporated is a precision 0.5W surface-mount Zener diode with nominal zener voltage of 14.25 V (min 13.89 V, max 14.62 V) at 10 mA test current, 40 Ω maximum zener impedance, and ±0.07 µA reverse leakage at 13.2 V. It delivers tight voltage tolerance for voltage regulation and reference applications in power supply feedback loops and analog sensing circuits.
For engineers reviewing the DDZ15BSF-7 datasheet, DDZ15BSF-7 pinout, DDZ15BSF-7 application, or DDZ15BSF-7 equivalent, this device is selected for stable low-power voltage reference design where thermal stability (TC ≈ +3.5 mV/°C), SOD323F footprint compatibility, and AEC-Q200-readiness are critical.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable reference voltage across its cathode–anode terminals under controlled current conditions. Its 10 mA zener test current and 40 Ω dynamic impedance ensure predictable regulation behavior in low-current bias networks.
The device exhibits a positive temperature coefficient (~+3.5 mV/°C near 15 V), enabling predictable drift compensation in multi-device references. Its SOD323F package supports automated placement and provides 250°C/W junction-to-ambient thermal resistance on standard FR-4 PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.89 V to 14.62 V @ IZT = 10 mA - defines regulation window for feedback or reference use |
| Zener Impedance (ZZT) | ≤ 40 Ω @ 1 kHz - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | ≤ 0.07 µA @ VR = 13.2 V - guarantees negligible error current in high-impedance reference nodes |
| Power Dissipation (PD) | 500 mW on FR-4 - supports continuous operation up to ~35 mA at 14.25 V without derating |
| Thermal Resistance (RθJA) | 250 °C/W - enables thermal design with ≤ 12.5°C rise at full rated power on standard layout |
| Package | SOD323F - 1.25 mm × 1.70 mm surface-mount outline compatible with 0402-class pick-and-place |
| Operating Temperature | −65°C to +150°C - suitable for under-hood automotive and industrial ambient environments |
Pinout & Package
Package: SOD323F - ultra-compact plastic-molded surface-mount package with matte tin–annealed copper alloy leadframe, moisture sensitivity level 1, and UL 94V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to lower potential in Zener regulation | Provides return path for bias current; must be tied to ground or common reference in shunt regulator topology |
| Cathode | Current exit terminal in forward bias; higher-potential terminal in Zener operation | Connected to regulated node; voltage at this terminal is clamped to VZ when reverse-biased above breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±2.5% typical (13.89–14.62 V range) - reduces need for external trimming in voltage reference designs |
| Low dynamic impedance | ≤40 Ω at 10 mA - maintains regulation accuracy under varying load currents in feedback paths |
| Automated assembly compatibility | SOD323F footprint with cathode band marking - supports high-yield reflow and vision-based placement verification |
| Environmental compliance | Lead-free, halogen-free, antimony-free per RoHS 3 and IATF 16949 manufacturing - meets automotive and industrial sustainability requirements |
| Thermal performance | 250°C/W RθJA on FR-4 - allows direct thermal modeling without heatsinking in space-constrained layouts |
Applications
| Switching Power Supply Feedback | Industrial Sensor Reference |
|---|---|
|
Use Scenario: Regulating output voltage in isolated flyback converters via optocoupler-coupled feedback network. IC Role / Device Role / Timing Role: Shunt voltage reference providing precise 14.25 V threshold to TL431-like control IC input. Use Value: Enables ±1% output regulation accuracy by stabilizing reference point against input line and load variations. |
Use Scenario: Providing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Low-drift voltage reference source for ratiometric ADC biasing and offset calibration. Use Value: Limits sensor measurement error to <0.1% FS due to <0.07 µA leakage and +3.5 mV/°C TC matching. |
| Automotive Body Control Unit | Medical Instrumentation Bias |
|
Use Scenario: Overvoltage protection and rail monitoring in 12 V battery-supplied BCM microcontroller power domains. IC Role / Device Role / Timing Role: Clamping diode in supervisor circuit detecting >14.6 V battery faults. Use Value: Triggers fault flag within 10 µs due to fast 40 Ω impedance response and −65°C to +150°C operational range. |
Use Scenario: Generating stable bias for op-amp front-end stages in portable ECG signal conditioning. IC Role / Device Role / Timing Role: Low-noise DC reference for instrumentation amplifier gain-setting network. Use Value: Reduces baseline drift to <2 µV/°C by minimizing self-heating and leveraging tight VZ tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C15LT1G | 15 V nominal (14.3–15.7 V), 30 Ω ZZT, SOT-23 package, 350 mW rating | Larger footprint, higher thermal resistance (350°C/W), lower power handling | Select when board space permits larger package and lower power dissipation suffices |
| MMSZ5245B-TP | 15 V nominal (14.25–15.75 V), 17 Ω ZZT, SOD-123 package, 500 mW rating | Wider VZ tolerance, lower impedance, but 1.8 mm × 1.4 mm body vs. SOD323F's 1.25 mm × 1.70 mm | Choose for tighter impedance-critical references where SOD-123 layout is acceptable |
Compared with BZX84-C15LT1G and MMSZ5245B-TP, DDZ15BSF-7 offers superior voltage tolerance control (±2.5% vs. ±5–6.7%) and optimized thermal performance in the smallest footprint, making it preferred for high-density automotive and medical PCBs requiring long-term stability.
Availability
DDZ15BSF-7 is available at Aetrix Electronics and suitable for switching power supplies, industrial sensor interfaces, automotive body control units, and portable medical instrumentation requiring stable component supply and AEC-Q200-aligned manufacturing traceability.
Supply support for DDZ15BSF-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 the Americas.
The DDZ series targets precision voltage reference and regulation in space-constrained, thermally demanding applications-designed specifically for automotive, industrial, and medical systems needing tight VZ tolerance and robust environmental compliance.
FAQ
What is the maximum continuous reverse current this Zener can handle without exceeding its 500 mW rating?
At its nominal zener voltage of 14.25 V, DDZ15BSF-7 supports up to 35.1 mA continuous reverse current (500 mW ÷ 14.25 V) before reaching thermal limits on a standard FR-4 PCB. Derating begins above 25°C ambient per the published power derating curve, reaching zero dissipation at 150°C.
Does this part meet AEC-Q200 stress testing requirements?
DDZ15BSF-7 is manufactured in IATF 16949-certified facilities and qualified to AEC-Q200 for passive components. While not explicitly marked "AEC-Q200 qualified" in the datasheet, Diodes confirms this series is PPAP-capable and intended for automotive applications requiring change control and traceability.
How does the temperature coefficient affect regulation accuracy over −40°C to +125°C?
With a typical TC of +3.5 mV/°C near 14.25 V, DDZ15BSF-7 exhibits ~0.31% VZ drift over a 90°C span (−40°C to +125°C). This translates to ±45 mV absolute shift, which is accounted for in system-level calibration routines used in automotive and medical designs.
Can this Zener be used in series or parallel configurations for higher voltage or current capability?
Series connection is viable for higher reference voltages (e.g., two DDZ15BSF-7 yield ~28.5 V), but requires matched units to avoid imbalance. Parallel use is not recommended due to negative resistance characteristics and thermal runaway risk-external current balancing resistors would be mandatory.
DDZ15BSF-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):
- 14.26 V
- Tolerance:
- ±3%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 40 Ohms
- Current - Reverse Leakage @ Vr:
- 70 nA @ 13.2 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-323F
DDZ15BSF-7 FAQ
1.How can I place an order for DDZ15BSF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ15BSF-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 DDZ15BSF-7 reliable?
The price and inventory of DDZ15BSF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ15BSF-7 is usually 5 days.
3.What payment methods are accepted for DDZ15BSF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ15BSF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ15BSF-7?
DDZ15BSF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ15BSF-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 DDZ15BSF-7?
For technical support, including DDZ15BSF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ15BSF-7 requirements.
6.How does Aetrix verify that DDZ15BSF-7 is sourced from the original manufacturer or authorized distributors?
All DDZ15BSF-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 DDZ15BSF-7 meets industry standards.
7.What is the process for return or replacement of DDZ15BSF-7?
All DDZ15BSF-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ15BSF-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 DDZ15BSF-7 part is unused and in its original packaging.
Return procedure for DDZ15BSF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DDZ15BSF-7 Tags
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