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Diodes Incorporated DZ9F20S92-7
- Part No.:
- DZ9F20S92-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SOD-923
- Datasheet:
-
DZ9F20S92-7.pdf
- Description:
- DIODE ZENER 20V 200MW SOD923
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
DZ9F20S92-7 from Diodes Incorporated is a surface-mount Zener diode with nominal 20V zener voltage (19.0–21.0V range), 5mA test current, 55Ω maximum zener impedance at 5mA, ±0.1µA maximum reverse leakage at 15.4V, and 200mW power dissipation in SOD923 package. It provides precision voltage regulation in space-constrained power management and reference circuits.
For engineers reviewing the DZ9F20S92-7 datasheet, DZ9F20S92-7 pinout, DZ9F20S92-7 application, or DZ9F20S92-7 equivalent, this page delivers verified electrical parameters, thermal derating behavior, SOD923 terminal mapping, and direct-fit alternatives for low-voltage rail clamping and analog reference design.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its −3.5 to +14.4 mV/°C temperature coefficient ensures predictable drift over −65°C to +150°C operating range, and its 55pF capacitance at 1MHz supports high-frequency noise suppression without signal distortion.
The device uses an exposed-terminal SOD923 package with 0.2mm lead width and matte tin–annealed Alloy 42 leadframe, enabling reliable solder joint inspection without X-ray and delivering 625°C/W junction-to-ambient thermal resistance on FR-4 PCB with recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20V nominal, 19.0–21.0V range at 5mA - defines regulated output voltage tolerance in feedback or clamp circuits |
| Zener Impedance (ZZT) | 55Ω max at 5mA - determines voltage regulation stability under dynamic load changes |
| Reverse Leakage (IR) | 0.1µA max at 15.4V - ensures minimal quiescent current draw in battery-powered references |
| Power Dissipation (PD) | 200mW at 25°C, derated 2.0mW/°C above - sets maximum continuous power handling on standard FR-4 layout |
| Thermal Resistance (RθJA) | 625°C/W - quantifies junction temperature rise per watt dissipated, critical for thermal margin analysis |
| Capacitance (CT) | 55pF at 1MHz, 0V - limits high-frequency bypass effectiveness and affects transient response in filtering applications |
| Operating Temperature | −65°C to +150°C - enables deployment in automotive engine control units and industrial sensor interfaces |
Pinout & Package
Package: SOD923 (1.0 × 0.6 × 0.37 mm), ultra-small flat-lead thermally efficient surface-mount case with exposed terminals and cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node; forms reference return path in shunt regulator topology |
| Cathode | Zener breakdown terminal / voltage regulation input | Connected to unregulated supply or signal node; maintains fixed voltage drop relative to anode during reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small SOD923 footprint | 1.0 × 0.6 mm area saves >60% board space vs. SOD-123 in portable power modules |
| Exposed terminals | Enables visual solder joint inspection-eliminates need for X-ray in high-reliability manufacturing |
| Lead-free & halogen-free construction | Meets RoHS 2 (2011/65/EU) and JEDEC J-STD-020 Level 1 moisture sensitivity requirements |
| Thermally efficient leadframe | Alloy 42 base with matte tin anneal ensures MIL-STD-202-compliant solderability and low thermal resistance |
Applications
| USB Power Delivery Clamp | Industrial Sensor Reference |
|---|---|
Use Scenario: Clamping 20V auxiliary rails in USB PD sink adapters to prevent overvoltage damage to downstream DC-DC converters. IC Role / Device Role / Timing Role: Shunt voltage regulator providing precise 20V threshold protection against transient surges. Use Value: 55Ω zener impedance ensures <±0.3V regulation shift under 10mA load transients, maintaining compliance with USB PD 3.0 voltage tolerance. | Use Scenario: Generating stable 20V reference for 16-bit ADC front-end in factory-floor pressure transmitters. IC Role / Device Role / Timing Role: Precision voltage reference source with low leakage (<0.1µA) minimizing offset error in ratiometric measurement paths. Use Value: −3.5 to +14.4 mV/°C tempco allows calibration compensation over −40°C to +85°C operating range without active trimming. |
| Automotive Body Control Module | Medical Infusion Pump Supply Monitor |
Use Scenario: Monitoring 24V battery-derived 20V logic rail in BCM microcontroller power domain for brown-out detection. IC Role / Device Role / Timing Role: Reverse-biased voltage monitor feeding comparator input to trigger reset or fault flag. Use Value: 625°C/W RθJA enables operation up to +125°C ambient without derating loss, meeting AEC-Q200 Grade 2 thermal requirements. | Use Scenario: Regulating auxiliary 20V supply for motor driver ICs in battery-operated infusion pumps requiring IEC 60601-1 compliance. IC Role / Device Role / Timing Role: Low-power shunt regulator stabilizing isolated DC-DC output before safety-critical actuator interface. Use Value: 0.001g mass and SOD923 footprint reduce mechanical stress on flex PCBs in compact wearable medical enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX584C20 | 20V nominal, 100Ω ZZT, SOD-523 package (1.2 × 0.8 mm) | Higher impedance reduces regulation accuracy under load; larger footprint increases board area use | Select when legacy SOD-523 layout compatibility is required over tight regulation performance |
| MMSZ5248B | 20V nominal, 23Ω ZZT, SOD-123 package (3.7 × 1.6 mm) | Lower impedance improves load regulation but 3.7× larger footprint limits miniaturized designs | Choose for cost-sensitive industrial controls where board space is not constrained and tighter regulation is prioritized |
Compared with BZX584C20 and MMSZ5248B, DZ9F20S92-7 uniquely balances ultra-compact size (SOD923), moderate impedance (55Ω), and low leakage (0.1µA), making it optimal for next-generation wearables and automotive ECUs where volume and thermal reliability are co-constrained.
Availability
DZ9F20S92-7 is available at Aetrix Electronics and suitable for USB Power Delivery clamp circuits, industrial sensor references, automotive body control modules, and medical infusion pump supply monitors requiring stable component supply and full RoHS/Green compliance.
Supply support for DZ9F20S92-7 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.
The DZ9F series belongs to Diodes' ultra-miniature Zener diode product line, engineered specifically for space-constrained voltage regulation and precision reference applications in portable, automotive, and industrial electronics.
FAQ
What is the maximum reverse voltage rating before breakdown for DZ9F20S92-7?
The DZ9F20S92-7 has no separate "maximum reverse voltage" rating-it is designed to operate in controlled reverse breakdown. Its specified zener voltage is 20V nominal (19.0–21.0V) at 5mA test current. The absolute maximum reverse voltage is defined by its power limit: at 25°C, 200mW dissipation corresponds to ~10mA at 20V, beyond which thermal runaway may occur without proper heat sinking.
Does DZ9F20S92-7 require special PCB layout considerations for thermal performance?
Yes. Diodes Incorporated specifies that the 625°C/W junction-to-ambient thermal resistance assumes use of their recommended SOD923 pad layout on FR-4 PCB, including minimum copper area and thermal vias. Deviating from the published pad dimensions (e.g., reducing copper pour or omitting thermal relief) increases thermal resistance and risks exceeding 150°C junction temperature at rated power.
Can DZ9F20S92-7 be used in place of a 20V TVS diode for ESD protection?
No. While both are silicon diodes, DZ9F20S92-7 is a precision Zener optimized for voltage regulation-not transient suppression. Its 200mW power rating and 55Ω impedance make it unsuitable for absorbing ESD pulses (e.g., IEC 61000-4-2), which require sub-nanosecond response and kilowatt-level peak power handling. Use dedicated TVS devices like PESD5V0S1BA for such applications.
Is the cathode band orientation consistent across all DZ9F-series parts in SOD923 packaging?
Yes. All DZ9F-series Zener diodes-including DZ9F20S92-7-use identical SOD923 packaging with cathode indicated by a visible band at one end of the package. The band aligns with the cathode terminal, and the opposite end is the anode. This marking is standardized per Diodes Incorporated's SOD923 outline drawing and confirmed in the DS37439 datasheet top-view diagram.
DZ9F20S92-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-923
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 20 V
- Tolerance:
- ±5%
- Power - Max:
- 200 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 15.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-923
DZ9F20S92-7 FAQ
1.How can I place an order for DZ9F20S92-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DZ9F20S92-7 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 DZ9F20S92-7 reliable?
The price and inventory of DZ9F20S92-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DZ9F20S92-7 is usually 5 days.
3.What payment methods are accepted for DZ9F20S92-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DZ9F20S92-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DZ9F20S92-7?
DZ9F20S92-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DZ9F20S92-7 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 DZ9F20S92-7?
For technical support, including DZ9F20S92-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DZ9F20S92-7 requirements.
6.How does Aetrix verify that DZ9F20S92-7 is sourced from the original manufacturer or authorized distributors?
All DZ9F20S92-7 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 DZ9F20S92-7 meets industry standards.
7.What is the process for return or replacement of DZ9F20S92-7?
All DZ9F20S92-7 units undergo pre-shipment inspection (PSI). If there is an issue with DZ9F20S92-7, 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 DZ9F20S92-7 part is unused and in its original packaging.
Return procedure for DZ9F20S92-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DZ9F20S92-7 Tags
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