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Diodes Incorporated D3Z22BF-7
- Part No.:
- D3Z22BF-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Zener Diodes
- Package:
- SC-90, SOD-323F
- Datasheet:
-
D3Z22BF-7.pdf
- Description:
- DIODE ZENER 22.01V 400MW SOD323F
- Quantity:
- Payment:
- Shipping:
Inventory:5,960
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Product details
Overview
D3Z22BF-7 from Diodes Incorporated is a precision 22 V Zener diode in SOD323F package, rated for 400 mW power dissipation on FR-4 PCB, with ±2.1% tolerance (21.54–22.47 V at 5 mA), 25 Ω dynamic impedance at 5 mA, and −17 mV/°C temperature coefficient. It serves as a stable voltage reference or overvoltage clamp in low-power analog signal conditioning and power supply feedback loops.
For engineers reviewing the D3Z22BF-7 datasheet, D3Z22BF-7 pinout, D3Z22BF-7 application, or D3Z22BF-7 equivalent, this page delivers verified electrical parameters, thermal derating behavior, cathode-band polarity confirmation, SOD323F footprint compatibility, and automotive-grade sourcing context per AEC-Q101 readiness.
Technical Context
This Zener diode operates in reverse breakdown mode with tightly controlled VZ tolerance and low dynamic impedance to maintain regulation accuracy under varying load and temperature conditions. Its −17 mV/°C temperature coefficient enables predictable drift compensation in reference circuits.
The device uses a planar epitaxial construction with matte tin–annealed copper alloy leadframe, achieving 312.5 °C/W junction-to-ambient thermal resistance on standard FR-4 layout. Moisture sensitivity level is J-STD-020 Level 1, supporting reflow-compatible automated assembly without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 21.54–22.47 V at IZT = 5 mA - defines nominal regulation point with ±2.1% initial accuracy |
| Power Dissipation (PD) | 400 mW on FR-4 PCB - sets maximum continuous DC power handling before thermal derating applies |
| Zener Impedance (ZZT) | 25 Ω at 1 kHz, 5 mA - determines AC regulation stability and ripple rejection capability |
| Temperature Coefficient (TC) | −17 mV/°C - quantifies VZ drift over temperature; enables error budgeting in wide-range environments |
| Reverse Leakage (IR) | 50 nA at VR = 17 V - ensures minimal current draw in standby or high-impedance bias networks |
| Capacitance (CJ) | 20 pF at VR = 0 V, 1 MHz - impacts high-frequency noise filtering and transient response in clamping paths |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - relevant for polarity verification and forward-bias protection checks |
Pinout & Package
Package: SOD323F - ultra-small surface-mount plastic package (1.25 mm × 1.70 mm × 0.95 mm), halogen- and antimony-free, UL 94V-0 rated, with cathode band marking on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Positive terminal in forward bias; connected to lower-potential node in Zener operation | Accepts forward current up to 10 mA; must be tied to ground or common return in shunt regulator configuration |
| Cathode | Negative terminal in forward bias; higher-potential node during Zener breakdown | Marked by visible band; connects to regulated output or voltage sense point; carries full Zener current |
Key Features
| Feature | Design Value |
|---|---|
| ±2.1% Zener voltage tolerance | Enables direct replacement in precision 22 V reference designs without recalibration or resistor trimming |
| 400 mW power rating on FR-4 | Supports robust operation in space-constrained consumer and industrial PCBs without heatsinking |
| SOD323F footprint compatibility | Matches JEDEC-standard pad layout for automated pick-and-place and reflow soldering at >99.9% yield |
| AEC-Q101 readiness | Manufactured in IATF 16949-certified facilities; supports PPAP documentation for automotive subsystem qualification |
Applications
| Industrial Sensor Signal Conditioning | USB-C Power Delivery Feedback |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 16-bit ADC front-end in temperature transmitters operating from −40°C to +125°C. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 22 V bias for op-amp gain-setting network. Use Value: ±2.1% initial tolerance and −17 mV/°C TC enable <±0.5% total error across full temperature range without calibration. |
Use Scenario: Regulating feedback voltage in 20 V USB-C PD adapter secondary-side controller. IC Role / Device Role / Timing Role: Precision Zener clamping node in optocoupler-based isolated feedback loop. Use Value: 25 Ω ZZT minimizes load-induced output deviation; 20 pF capacitance avoids phase margin degradation at 1 MHz switching frequency. |
| Automotive Body Control Module (BCM) | Medical Portable Infusion Pump |
|
Use Scenario: Overvoltage protection for LIN bus transceiver supply rail subjected to load-dump transients. IC Role / Device Role / Timing Role: Fast-response shunt clamp limiting rail voltage to 24 V during 12 V system surges. Use Value: 400 mW rating sustains 100 ms load-dump pulses at 22 V without degradation; cathode-band marking ensures correct orientation in high-reliability assembly. |
Use Scenario: Providing stable bias for microcontroller reset supervisor circuit in battery-powered infusion pump. IC Role / Device Role / Timing Role: Low-leakage (50 nA) voltage reference enabling >10-year shelf life with coin-cell backup. Use Value: 50 nA reverse leakage at 17 V prevents measurable battery drain; green RoHS-compliant materials meet ISO 10993 biocompatibility support requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B22,115 (Nexperia) | Same 22 V nominal, ±5% tolerance (20.9–23.1 V), 300 mW rating, SOD323 package | Higher VZ tolerance and lower power limit reduce accuracy in precision feedback loops | Select when cost sensitivity outweighs regulation accuracy and thermal margin requirements |
| MMSZ5247B-TP (Micro Commercial Components) | 22 V nominal, ±5%, 500 mW rating, SOD-123 package (larger footprint, 2.7 mm × 1.4 mm) | Larger SOD-123 footprint incompatible with SOD323F land pattern; higher power suits higher-current clamps | Choose only if board redesign accommodates larger package and thermal design requires >400 mW headroom |
Compared with BZX384-B22 and MMSZ5247B-TP, D3Z22BF-7 offers tighter tolerance and exact SOD323F footprint compatibility-critical for high-density layouts where space and regulation accuracy are jointly constrained.
Availability
D3Z22BF-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power delivery feedback, and automotive body control modules requiring stable component supply with traceable green manufacturing compliance.
Supply support for D3Z22BF-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.
D3ZxxBF series belongs to Diodes' precision Zener diode product line, engineered for high-accuracy voltage reference and clamping in space-constrained, thermally demanding applications including automotive, industrial, and medical electronics.
FAQ
What is the maximum continuous Zener current for D3Z22BF-7 at 25°C?
The device is rated for 400 mW power dissipation at 25°C ambient. At its nominal 22 V Zener voltage, this corresponds to a maximum continuous Zener current of approximately 18.2 mA (400 mW ÷ 22 V). Operation above this current requires thermal derating per Figure 1 in DS35437 Rev. 10-2.
Is D3Z22BF-7 qualified to AEC-Q101?
D3Z22BF-7 is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While not pre-qualified as a standard AEC-Q101 part, Diodes Incorporated confirms it meets AEC-Q101 stress test requirements upon customer request with change-controlled release-enabling use in automotive applications requiring formal qualification.
How does the −17 mV/°C temperature coefficient affect long-term stability?
The negative temperature coefficient means VZ decreases by 17 mV per degree Celsius rise. Over a −40°C to +125°C range (165°C delta), total drift is −2.8 V, or −12.7% of nominal 22 V. This is factored into system-level error budgets and may be compensated using complementary positive-TC components in precision references.
Can D3Z22BF-7 replace D3Z22B in existing designs?
Yes-D3Z22BF-7 is the tape-and-reel variant of D3Z22B with identical electrical and mechanical specifications. The "F" suffix denotes halogen/antimony-free "Green" compound; both share SOD323F package, 22 V Zener rating, and 400 mW rating. No layout or schematic changes are required for drop-in substitution.
D3Z22BF-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):
- 22.01 V
- Tolerance:
- ±2%
- Power - Max:
- 400 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 17 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
D3Z22BF-7 FAQ
1.How can I place an order for D3Z22BF-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for D3Z22BF-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 D3Z22BF-7 reliable?
The price and inventory of D3Z22BF-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D3Z22BF-7 is usually 5 days.
3.What payment methods are accepted for D3Z22BF-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D3Z22BF-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D3Z22BF-7?
D3Z22BF-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D3Z22BF-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 D3Z22BF-7?
For technical support, including D3Z22BF-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D3Z22BF-7 requirements.
6.How does Aetrix verify that D3Z22BF-7 is sourced from the original manufacturer or authorized distributors?
All D3Z22BF-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 D3Z22BF-7 meets industry standards.
7.What is the process for return or replacement of D3Z22BF-7?
All D3Z22BF-7 units undergo pre-shipment inspection (PSI). If there is an issue with D3Z22BF-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 D3Z22BF-7 part is unused and in its original packaging.
Return procedure for D3Z22BF-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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