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Nexperia USA Inc. BZV90-C18,115
- Part No.:
- BZV90-C18,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
BZV90-C18,115.pdf
- Description:
- DIODE ZENER 18V 1.5W SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:2,371
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Product details
Overview
BZV90-C18,115 from Nexperia is a medium-power Zener voltage regulator diode in SOT223 package, designed for precision DC voltage reference and stabilization in power supply rails. It delivers a nominal Zener voltage of 18 V at 5 mA test current, with ±5% tolerance, 10 Ω typical differential resistance, and −12.6 mV/K temperature coefficient. Used in industrial power supplies and analog sensor biasing circuits where stable 18 V regulation is required.
For engineers reviewing the BZV90-C18,115 datasheet, BZV90-C18,115 pinout, BZV90-C18,115 application, or BZV90-C18,115 equivalent, key selection considerations include Zener voltage accuracy at IZtest = 5 mA, thermal resistance (83.3 K/W), non-repetitive surge capability (12.6 A peak reverse current), and SOT223 thermal pad layout compatibility.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable voltage across its terminals under varying load and input conditions. Its design targets low dynamic impedance (10 Ω typ.) and predictable temperature drift (−12.6 mV/K) within the 25 °C to 150 °C junction range.
The SOT223 package integrates a large copper collector pad for enhanced thermal dissipation, enabling 1.5 W continuous power handling when mounted on 2 cm² double-sided FR4 PCB copper area. Surge capability is defined for 100 μs square-wave pulses up to 40 W peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 16.8 V to 19.1 V at IZtest = 5 mA - ensures stable 18 V reference with ±5% manufacturing tolerance. |
| Differential Resistance rdif | 10 Ω max. at IZtest = 5 mA - low impedance maintains regulation accuracy under load variation. |
| Temperature Coefficient SZ | −12.6 mV/K at IZtest = 5 mA - negative drift enables predictable compensation in temperature-sensitive designs. |
| Total Power Dissipation Ptot | 1500 mW at Tamb = 25 °C - supports continuous operation in compact industrial power stages. |
| Non-repetitive Peak Reverse Current IZSM | 12.6 A at tp = 100 μs - handles transient overvoltage events without failure. |
| Junction-to-Ambient Thermal Resistance Rth j-a | 83.3 K/W - defines minimum PCB copper area (2 cm²) needed for safe thermal management. |
| Reverse Current IR | 0.05 μA max. at VR = 13.5 V - ensures minimal leakage in high-impedance bias networks. |
Pinout & Package
SOT223 plastic surface-mount package with integrated thermal pad (lead 3); 4-terminal configuration optimized for heat transfer and board-level reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode | Primary anode connection; used for forward conduction path and thermal anchoring via internal bond wire. |
| 2, 4 | Cathode | Parallel cathode terminals; provide low-inductance, high-current return path during Zener conduction. |
| 3 | Anode (Thermal Pad) | Exposed copper pad tied internally to anode; must be soldered to PCB copper pour for thermal and mechanical stability. |
Key Features
| Feature | Design Value |
|---|---|
| ±5% Zener voltage tolerance (E24 series) | Enables direct replacement across 37 standard voltages (2.4 V–75 V) without custom calibration. |
| 1.5 W continuous power rating | Supports higher-current regulation than SOD-123 or DO-35 devices, reducing need for external pass transistors. |
| Low 10 Ω dynamic impedance | Maintains <±1% output deviation across 1–10 mA load current changes in feedback-sensing applications. |
| −12.6 mV/K temperature coefficient | Allows predictable drift modeling in temperature-compensated references or analog front-end biasing. |
| SOT223 thermal pad (Pin 3) | Reduces junction-to-board thermal resistance by ~40% vs. standard SOT-23, improving long-term reliability at 1.5 W. |
Applications
| Industrial Power Supply Regulation | Analog Sensor Bias Reference |
|---|---|
|
Use Scenario: Stabilizing 18 V rail for op-amp power domains and ADC reference buffers in PLC I/O modules. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed bias point for precision analog circuitry. Use Value: Maintains <±0.5% output stability over −40 °C to +85 °C ambient, minimizing sensor offset drift. |
Use Scenario: Generating accurate 18 V excitation voltage for strain-gauge Wheatstone bridges in load cells. IC Role / Device Role / Timing Role: Precision DC voltage source establishing known bridge excitation potential. Use Value: Low 10 Ω rdif ensures excitation voltage remains constant despite bridge impedance variations. |
| Overvoltage Protection Clamp | Microcontroller Reset Circuit |
|
Use Scenario: Clamping 24 V bus transients to protect downstream 18 V LDO inputs in factory automation controllers. IC Role / Device Role / Timing Role: Transient voltage suppressor limiting peak rail voltage during ESD or inductive kick events. Use Value: 12.6 A non-repetitive surge rating absorbs 40 W/100 μs pulses without degradation. |
Use Scenario: Providing clean 18 V reset threshold for brown-out detection in ARM Cortex-M based edge gateways. IC Role / Device Role / Timing Role: Voltage threshold element triggering POR/BOR logic via comparator input. Use Value: 0.05 μA max. leakage at 13.5 V prevents false resets during low-power sleep modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C18 | Same 18 V nominal Zener voltage but in SOT-23 package; lower Ptot = 300 mW; rdif = 40 Ω typ. | Limited to low-power signal conditioning; unsuitable for >100 mA regulation loads or surge clamping. | Select when board space is critical and thermal/power demands are ≤300 mW. |
| MMBZ5245B | 18 V Zener in SOT-23; tighter ±5% tolerance but only 200 mW Ptot; no thermal pad; rdif = 35 Ω. | Not rated for surge clamping; higher impedance limits regulation accuracy in variable-load scenarios. | Prefer for cost-sensitive consumer-grade biasing where thermal performance is secondary. |
Compared with BZX84-C18 and MMBZ5245B, the BZV90-C18,115 provides 5× higher continuous power, 4× lower dynamic impedance, and integrated thermal pad-making it the only option among the three qualified for industrial 1.5 W regulation and 40 W transient suppression.
Availability
BZV90-C18,115 is available at Aetrix Electronics and suitable for industrial power supply regulation, analog sensor bias reference, and overvoltage protection clamp applications requiring stable component supply and long-lifecycle support.
Supply support for BZV90-C18,115 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 leader in discrete semiconductors, formed in 2017 from the former NXP Standard Products division, specializing in high-volume, high-reliability components for automotive, industrial, and computing markets.
The BZV90 series belongs to Nexperia's precision Zener diode product line, engineered for stable voltage reference and regulation in thermally demanding environments where SOT223 thermal performance is essential.
FAQ
What is the maximum continuous power dissipation for BZV90-C18,115?
The BZV90-C18,115 has a total power dissipation rating of 1500 mW at ambient temperature of 25 °C, measured with the device mounted on an FR4 double-sided PCB with 2 cm² copper area. Derating is required above 25 °C per the 83.3 K/W thermal resistance specification.
How does the SOT223 package improve thermal performance over SOT-23 alternatives?
The SOT223 package incorporates a large exposed anode thermal pad (Pin 3) that must be soldered to PCB copper, reducing thermal resistance by ~40% versus SOT-23. This enables reliable 1.5 W operation where SOT-23 devices are limited to ≤300 mW.
What is the significance of the −12.6 mV/K temperature coefficient?
The negative temperature coefficient means the Zener voltage decreases by 12.6 mV per Kelvin rise in junction temperature. This value is specified at 5 mA test current and allows designers to model and compensate for thermal drift in precision reference circuits.
Can BZV90-C18,115 be used for transient voltage suppression?
Yes-it is rated for non-repetitive peak reverse power dissipation of 40 W at 100 μs pulse width, corresponding to 12.6 A peak current. This makes it suitable for clamping short-duration surges in industrial 24 V systems, provided duty cycle remains non-repetitive.
BZV90-C18,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 18 V
- Tolerance:
- ±5%
- Power - Max:
- 1.5 W
- Impedance (Max) (Zzt):
- 45 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 50 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-223
BZV90-C18,115 FAQ
1.How can I place an order for BZV90-C18,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZV90-C18,115 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 BZV90-C18,115 reliable?
The price and inventory of BZV90-C18,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV90-C18,115 is usually 5 days.
3.What payment methods are accepted for BZV90-C18,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV90-C18,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZV90-C18,115?
BZV90-C18,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZV90-C18,115 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 BZV90-C18,115?
For technical support, including BZV90-C18,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV90-C18,115 requirements.
6.How does Aetrix verify that BZV90-C18,115 is sourced from the original manufacturer or authorized distributors?
All BZV90-C18,115 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 BZV90-C18,115 meets industry standards.
7.What is the process for return or replacement of BZV90-C18,115?
All BZV90-C18,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZV90-C18,115, 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 BZV90-C18,115 part is unused and in its original packaging.
Return procedure for BZV90-C18,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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