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Diodes Incorporated DDZ10BSF-7
- Part No.:
- DDZ10BSF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
DDZ10BSF-7.pdf
- Description:
- DIODE ZENER 9.66V 500MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:7,596
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Product details
Overview
DDZ10BSF-7 from Diodes Incorporated is a precision 9.41–9.90 V, 500 mW surface-mount Zener diode in SOD323F package, designed for voltage regulation and reference applications in space-constrained PCBs. It delivers ±5% zener voltage tolerance at 20 mA test current, 30 Ω dynamic impedance at 1 kHz, and maintains stable operation from –65°C to +150°C ambient.
For engineers reviewing the DDZ10BSF-7 datasheet, DDZ10BSF-7 pinout, DDZ10BSF-7 application, or DDZ10BSF-7 equivalent, this device is selected for low-power analog references, overvoltage clamping in sensor interfaces, and precision biasing in automotive and industrial signal conditioning circuits where tight VZ tolerance and thermal stability are critical.
Technical Context
This Zener diode operates in reverse breakdown mode with a nominal zener voltage of 9.66 V (typical), specified at IZT = 20 mA. Its temperature coefficient is +8.94 mV/°C, indicating positive drift with rising temperature - a key design consideration for high-accuracy references across wide thermal ranges.
The device uses a planar epitaxial construction with cathode band marking, optimized for automated placement on FR-4 boards. Thermal resistance is 250°C/W (junction-to-ambient), and power derating begins linearly above +25°C per Figure 1, reaching zero dissipation at +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.41–9.90 V @ IZT = 20 mA - defines regulated output range under standard test conditions |
| Zener Impedance (ZZT) | 30 Ω @ f = 1 kHz - determines AC ripple rejection and load regulation sensitivity |
| Power Dissipation (PD) | 500 mW on FR-4 (10 mm × 10 mm pad) - sets maximum continuous DC or pulsed power handling |
| Reverse Leakage (IR) | 7.5 µA @ VR = 8.94 V - quantifies off-state current affecting high-impedance bias networks |
| Thermal Resistance (RθJA) | 250°C/W - enables junction temperature estimation for reliability analysis under real PCB layout |
| Operating Temperature | –65°C to +150°C - supports extended-range deployment in under-hood automotive and industrial environments |
| Package | SOD323F - 2-pin surface-mount outline with 0.25–0.35 mm lead width, compatible with standard reflow profiles |
Pinout & Package
Package: SOD323F - ultra-compact plastic molded case (2.50 mm height, 1.70 mm width, 1.25 mm length), matte tin-plated copper alloy leadframe, moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit common or lower potential node; reverse-biased operation requires cathode at higher potential |
| Cathode | Zener breakdown terminal / voltage reference output | Marked with visible band; supplies regulated voltage when reverse-biased above VZ threshold |
Key Features
| Feature | Design Value |
|---|---|
| Precision Zener voltage tolerance | ±5% (9.41–9.90 V range) - reduces calibration burden in analog front-ends and reference dividers |
| Low dynamic impedance | 30 Ω at 1 kHz - improves regulation against varying load currents and noise coupling |
| Automated assembly compatibility | SOD323F footprint with standardized tape-and-reel packaging (3,000 pcs/reel) - supports high-throughput SMT line integration |
| Environmental compliance | Fully RoHS 3 compliant, halogen- and antimony-free ("Green") - meets automotive and industrial regulatory requirements without exemptions |
| Thermal robustness | Rated for –65°C to +150°C operation - enables use in engine control units, motor drives, and outdoor infrastructure |
Applications
| Industrial Sensor Signal Conditioning | Automotive Body Control Module Reference |
|---|---|
|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors (e.g., pressure, temperature) in PLC analog input modules. IC Role / Device Role / Timing Role: Precision voltage reference source for ADC biasing and ratiometric measurement scaling. Use Value: Tight ±5% VZ tolerance minimizes gain error across temperature, reducing system-level calibration steps. |
Use Scenario: Providing stable 9.66 V reference for microcontroller reset supervision and CAN transceiver bias in BCMs. IC Role / Device Role / Timing Role: Zener-based voltage monitor and clamp protecting low-voltage logic rails during load-dump transients. Use Value: 500 mW rating and 250°C/W RθJA allow transient energy absorption without thermal runaway in confined enclosures. |
| Portable Medical Instrument Biasing | Smart Meter Power Supply Regulation |
|
Use Scenario: Generating clean, low-noise bias for op-amps and instrumentation amplifiers in handheld ECG monitors. IC Role / Device Role / Timing Role: Low-impedance shunt reference replacing larger three-terminal regulators in battery-powered designs. Use Value: 30 Ω ZZT ensures <1 mV ripple on reference rail under dynamic load, preserving signal integrity in µV-level measurements. |
Use Scenario: Clamping auxiliary supply rail in single-phase smart meters exposed to grid surges and lightning-induced transients. IC Role / Device Role / Timing Role: Overvoltage protection element limiting rail voltage to 9.9 V during 100 V/1 µs surge events. Use Value: Fast response (<40 ms VZ measurement window) and 7.5 µA leakage at 8.94 V enable reliable clamping without standby current penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C10LT1G | VZ = 9.8–10.2 V (±5%), ZZT = 30 Ω @ 5 mA, PD = 300 mW, SOT-23 package | Lower power rating and different test current reduce regulation stability under >10 mA loads | Select when board space allows SOT-23 and thermal budget restricts to ≤300 mW continuous dissipation |
| MMSZ4689T1G | VZ = 9.1–9.5 V (±5%), ZZT = 40 Ω @ 5 mA, PD = 500 mW, SOD-123 package | Wider VZ min/max spread and higher impedance degrade reference accuracy in precision circuits | Choose only for cost-sensitive non-critical biasing where ±0.5 V VZ variation is acceptable |
Compared with BZX84-C10LT1G and MMSZ4689T1G, DDZ10BSF-7 offers superior regulation stability at 20 mA operating point, tighter thermal coefficient consistency, and SOD323F's smaller footprint - making it preferred for high-density, thermally constrained, and accuracy-critical applications.
Availability
DDZ10BSF-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive body control module reference, portable medical instrument biasing, and smart meter power supply regulation requiring stable component supply across multi-year production cycles.
Supply support for DDZ10BSF-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 automotive, industrial, and consumer markets with ISO/TS 16949 and IATF 16949 certified facilities.
This device belongs to Diodes' DDZxxBSF precision Zener series, engineered specifically for stable voltage referencing in space-constrained, thermally demanding applications where tight tolerance and low impedance are mandatory.
FAQ
What is the maximum continuous reverse current DDZ10BSF-7 can sustain without degradation?
DDZ10BSF-7 is rated for 20 mA zener test current (IZT) and 500 mW power dissipation. Sustained reverse current must be limited to ensure junction temperature stays below +150°C - typically ≤15 mA at +85°C ambient on standard FR-4, calculated using RθJA = 250°C/W and VZ ≈ 9.66 V.
Does DDZ10BSF-7 meet AEC-Q101 qualification for automotive use?
DDZ10BSF-7 is not individually AEC-Q101 qualified; however, Diodes states that automotive-grade versions of this family (with PPAP capability and IATF 16949 manufacturing) are available upon request. Standard DDZ10BSF-7 is suitable for non-safety-critical automotive subsystems meeting internal stress screening requirements.
How does the SOD323F package affect solder joint reliability compared to SOD-123?
SOD323F has shorter leads (L1 = 0.40 mm typ.) and narrower body (1.25 mm L × 1.70 mm W) than SOD-123, resulting in lower mechanical stress during thermal cycling. Its matte tin finish and J-STD-020 Level 1 moisture rating also support robust reflow yield and long-term intermetallic stability in humid environments.
Can DDZ10BSF-7 replace a 10 V Zener in an existing design using DDZ10ASF?
Yes - DDZ10BSF-7 (9.41–9.90 V) and DDZ10ASF (9.12–9.59 V) share identical SOD323F package, thermal specs, and test conditions. The B-grade offers tighter distribution within the 10 V nominal band and improved consistency for new designs, though legacy DDZ10ASF may require recalibration if substituted without verification.
DDZ10BSF-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):
- 9.66 V
- Tolerance:
- ±3%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 7.5 µA @ 8.94 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
DDZ10BSF-7 FAQ
1.How can I place an order for DDZ10BSF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DDZ10BSF-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 DDZ10BSF-7 reliable?
The price and inventory of DDZ10BSF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DDZ10BSF-7 is usually 5 days.
3.What payment methods are accepted for DDZ10BSF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DDZ10BSF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DDZ10BSF-7?
DDZ10BSF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DDZ10BSF-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 DDZ10BSF-7?
For technical support, including DDZ10BSF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DDZ10BSF-7 requirements.
6.How does Aetrix verify that DDZ10BSF-7 is sourced from the original manufacturer or authorized distributors?
All DDZ10BSF-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 DDZ10BSF-7 meets industry standards.
7.What is the process for return or replacement of DDZ10BSF-7?
All DDZ10BSF-7 units undergo pre-shipment inspection (PSI). If there is an issue with DDZ10BSF-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 DDZ10BSF-7 part is unused and in its original packaging.
Return procedure for DDZ10BSF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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