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Nexperia USA Inc. BZX384-B22,115
- Part No.:
- BZX384-B22,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
BZX384-B22,115.pdf
- Description:
- DIODE ZENER 22V 300MW SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,238
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Product details
Overview
BZX384-B22,115 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 22 V nominal breakdown voltage at 5 mA, 300 mW total power dissipation, and 150 °C maximum junction temperature. It provides stable reference voltage in low-power linear regulation, overvoltage clamping, and biasing circuits for industrial sensor interfaces and microcontroller I/O protection.
For engineers reviewing the BZX384-B22,115 datasheet, BZX384-B22,115 pinout, BZX384-B22,115 application, or BZX384-B22,115 equivalent, key selection criteria include its 22 V ±2 % Zener voltage tolerance, 250 mA forward current rating, 40 W non-repetitive peak reverse power capability, and thermal resistance of 415 K/W (junction-to-ambient).
Technical Context
This discrete Zener diode operates in reverse-biased breakdown mode to maintain a stable DC reference voltage across its terminals under varying load and supply conditions. Its differential resistance of ≤250 Ω at IZ = 5 mA ensures minimal voltage drift with current changes, while the −0.05 mV/K temperature coefficient near 22 V enables predictable thermal behavior in ambient ranges from −65 °C to +150 °C.
The device uses silicon planar epitaxial construction and is optimized for surface-mount reliability on FR4 PCBs with standard tin-plated copper footprints. It supports pulse operation up to 100 μs with 40 W surge capability and exhibits 60 μA maximum reverse leakage at 17.6 V (0.8 × VZ), confirming tight regulation performance in low-current bias networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 21.6 V to 22.4 V at IZ = 5 mA - defines precise regulation point with ±2 % tolerance for stable reference generation |
| Power Dissipation (Ptot) | 300 mW at Tamb ≤ 25 °C - sets continuous DC power limit for thermal design on standard FR4 PCB |
| Differential Resistance (rdif) | ≤250 Ω at IZ = 5 mA - determines output impedance and voltage variation under load current shifts |
| Reverse Leakage (IR) | ≤60 μA at VR = 17.6 V - confirms low standby current in clamping or standby bias applications |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - specifies conduction drop when used in forward-biased protection or logic-level detection |
| Non-repetitive Peak Power (PZSM) | 40 W at tp = 100 μs - enables transient overvoltage suppression without device failure |
| Junction Temperature (Tj) | −65 °C to +150 °C - defines full operational range for industrial and extended-temperature embedded systems |
Pinout & Package
Package: SOD323 (SC-76), surface-mount plastic package with 2 leads, 1.35 mm × 0.85 mm body size, cathode marked by bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-bias anode connection point for Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables tighter regulation than ±5 % variants (BZX384-C), reducing need for post-regulation trimming in precision analog stages |
| 300 mW total power rating | Supports continuous operation in space-constrained SMD designs without heatsinking on standard FR4 layouts |
| 415 K/W junction-to-ambient thermal resistance | Allows direct thermal modeling for ambient-limited derating curves in sealed enclosures or high-Tamb environments |
| 40 W non-repetitive peak power capability | Provides robust ESD and surge immunity per IEC 61000-4-2 Level 4 when placed at board-level I/O interfaces |
| SOD323 footprint compatibility | Ensures drop-in replacement with industry-standard reflow profiles and automated placement equipment (0402-equivalent land pattern) |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller I/O Protection |
|---|---|
|
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Zener reference diode providing 22 V regulated bias to Wheatstone bridge, replacing bulkier three-terminal regulators. Use Value: Delivers <±0.44 V regulation window (±2 %) with <250 Ω dynamic impedance, minimizing bridge output gain error due to supply variation. |
Use Scenario: Clamping 24 V field-side digital inputs to 3.3 V MCU GPIO pins via series resistor. IC Role / Device Role / Timing Role: Reverse-biased Zener acting as overvoltage clamp, shunting transients above 22 V to ground before reaching MCU ESD structures. Use Value: Withstands 40 W surge pulses (100 μs) and limits clamped voltage to ≤22.4 V, staying well below MCU absolute maximum ratings. |
| Low-Power Voltage Reference | Power Supply Rail Clamp |
|
Use Scenario: Generating stable 22 V reference for ADC reference buffer in battery-powered data loggers. IC Role / Device Role / Timing Role: Precision Zener operating at 5 mA, feeding low-input-bias op-amp buffer stage. Use Value: Achieves <0.05 mV/K tempco near 22 V and 60 μA max leakage at 17.6 V, enabling <0.1 % reference stability over −40 °C to +85 °C. |
Use Scenario: Protecting 24 V DC power rail against inductive switching spikes in motor control PCBs. IC Role / Device Role / Timing Role: Parallel-connected Zener absorbing energy from L×di/dt events on main supply line. Use Value: Limits rail overshoot to ≤22.4 V with 250 Ω dynamic impedance, preventing damage to downstream 24 V-rated ICs and capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B22,215 | Same electrical specs; differs only in tape-and-reel packaging (10,000 pcs/reel vs. 3,000 pcs/reel for ,115) | No functional difference; identical use in circuit design and layout | Select ,215 for high-volume automated assembly requiring larger reel quantities |
| MMBZ5248BS-7-F | 22 V ±5 % tolerance, 200 mW Ptot, SOT-323 package; higher rdif (≤300 Ω), lower surge rating (25 W) | Less precise regulation and lower surge margin; suitable only where cost or legacy footprint drives selection | Choose only if existing SOT-323 layout prohibits SOD323 rework and ±5 % tolerance is acceptable |
Compared with BZX384-B22,115, the ,215 variant offers identical performance in a different packaging format ideal for volume production, while MMBZ5248BS-7-F trades regulation accuracy and surge robustness for legacy footprint compatibility-making the BZX384-B22,115 optimal for new designs demanding ±2 % stability and 40 W transient handling.
Availability
BZX384-B22,115 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, microcontroller I/O protection, and low-power voltage reference applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for BZX384-B22,115 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.
The BZX384 series belongs to Nexperia's precision Zener diode product line, engineered specifically for stable voltage reference and overvoltage protection in space-constrained, cost-sensitive industrial and consumer electronics.
FAQ
What is the maximum reverse voltage this diode can withstand before breakdown?
The BZX384-B22,115 has a nominal Zener voltage of 22 V with ±2 % tolerance, meaning breakdown occurs between 21.6 V and 22.4 V at 5 mA test current. Its absolute maximum non-repetitive peak reverse voltage is not specified independently, but it sustains 40 W surges at 100 μs duration-corresponding to ~13.3 V at 3 A or ~22.4 V at 1.79 A-within safe operating area limits defined by its thermal and electrical characteristics.
Can this Zener diode be used in forward-bias mode?
Yes, the BZX384-B22,115 functions as a standard silicon diode in forward bias, with a typical forward voltage of 0.9 V at 10 mA and 1.1 V at 100 mA. This allows dual-use applications such as polarity protection or logic-level detection, though its primary design intent and characterization focus remain reverse-bias Zener regulation.
How does the SOD323 package affect thermal performance?
The SOD323 package delivers a junction-to-ambient thermal resistance of 415 K/W on standard FR4 PCBs and 110 K/W to solder point, enabling reliable 300 mW operation only with proper copper pour and layout. Derating begins above 25 °C ambient, reaching zero power at ~105 °C ambient-requiring thermal simulation or measurement for enclosure-integrated deployments.
Is this part qualified for automotive applications?
No, the BZX384-B22,115 is explicitly designated as non-automotive qualified per Nexperia's revision history (Rev. 4, January 2023). It lacks AEC-Q101 qualification, automotive-grade screening, and guaranteed operation across −40 °C to +125 °C. For automotive use, engineers must select the BZX384-Q series variants, which undergo additional stress testing and process controls.
BZX384-B22,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- BZX384
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±2%
- Power - Max:
- 300 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 15.4 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-323
BZX384-B22,115 FAQ
1.How can I place an order for BZX384-B22,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX384-B22,115 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 BZX384-B22,115 reliable?
The price and inventory of BZX384-B22,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX384-B22,115 is usually 5 days.
3.What payment methods are accepted for BZX384-B22,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX384-B22,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX384-B22,115?
BZX384-B22,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX384-B22,115 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 BZX384-B22,115?
For technical support, including BZX384-B22,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX384-B22,115 requirements.
6.How does Aetrix verify that BZX384-B22,115 is sourced from the original manufacturer or authorized distributors?
All BZX384-B22,115 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 BZX384-B22,115 meets industry standards.
7.What is the process for return or replacement of BZX384-B22,115?
All BZX384-B22,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZX384-B22,115, 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 BZX384-B22,115 part is unused and in its original packaging.
Return procedure for BZX384-B22,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX384-B22,115 Tags
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