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Nexperia USA Inc. BZX884-B18,315
- Part No.:
- BZX884-B18,315
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX884-B18,315.pdf
- Description:
- DIODE ZENER 18V 250MW DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:10,976
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Product details
Overview
BZX884-B18,315 from Nexperia is a ±2 % tolerance Zener diode optimized for precision voltage regulation and ESD protection in ultra-compact SOD882 (DFN1006-2) surface-mount packages. It delivers a nominal 18 V Zener voltage at 5 mA test current, 50 Ω typical differential resistance, and 14.4 mV/K temperature coefficient - enabling stable reference performance in space-constrained power rails and I/O protection circuits.
For engineers reviewing the BZX884-B18,315 datasheet, BZX884-B18,315 pinout, BZX884-B18,315 application, or BZX884-B18,315 equivalent, key selection criteria include Zener voltage tolerance, dynamic impedance at operating current, thermal coefficient behavior across temperature, and SOD882 package compatibility with high-density PCB layouts.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 17.64–18.36 V output across 1–10 mA bias currents, with low 50 Ω typical differential resistance ensuring minimal voltage shift under load variation. Its AEC-Q101 qualification confirms suitability for automotive-grade transient suppression and reference functions.
The device exhibits a +14.4 mV/K temperature coefficient at 5 mA, indicating predictable positive drift with junction temperature - critical for compensating thermal effects in analog sensing and feedback loops. Reverse leakage remains ≤1.5 nA at 12.6 V (0.7 × VZnom) and ≤100 nA at 15.3 V, supporting low-power standby integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 17.64 V to 18.36 V at IZ = 5 mA - defines tight ±2 % regulation window for precision reference use |
| Differential Resistance (rdiff) | 50 Ω typical at IZ = 5 mA - ensures <100 mV output shift over ±2 mA load change |
| Temperature Coefficient (SZ) | +14.4 mV/K at IZ = 5 mA - enables predictable thermal compensation in voltage references |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - supports low-loss anode-cathode conduction during forward-biased operation |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous power handling in standard layout |
| Reverse Leakage (IR) | ≤100 nA at VR = 15.3 V - guarantees negligible quiescent current in high-impedance bias networks |
| Package | SOD882 (DFN1006-2), 1.0 × 0.6 × 0.5 mm - enables 0201-class board area usage with solderable side terminals |
Pinout & Package
SOD882 (DFN1006-2) is a leadless, ultra-small plastic surface-mount package with two terminals and a transparent top view. The cathode is marked by a bar on the package surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; reverse-biased terminal during Zener operation |
| 2 | Anode (A) | Connected to ground or lower-potential rail; defines polarity for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables direct replacement in 18 V reference designs without recalibration or resistor trimming |
| AEC-Q101 qualification | Validates reliability for automotive power supply monitoring, infotainment I/O protection, and body control modules |
| 250 mW power rating | Supports sustained 5 mA Zener current with margin for transient surges in 12 V/24 V systems |
| Low 50 Ω dynamic impedance | Maintains regulation stability under fast load transients common in microcontroller reset circuits |
| SOD882 footprint compatibility | Aligns with IPC-7351B DFN1006-2 land pattern for automated assembly and reflow process control |
Applications
| Power Supply Reference | ESD Protection |
|---|---|
|
Use Scenario: Providing stable 18 V reference for ADC voltage dividers and op-amp biasing in industrial sensor nodes. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp and regulate reference node voltage. Use Value: ±2 % tolerance and +14.4 mV/K coefficient allow predictable thermal tracking without external compensation components. |
Use Scenario: Protecting USB 2.0 data lines against IEC 61000-4-2 Level 4 ESD events in portable medical devices. IC Role / Device Role / Timing Role: Fast-switching Zener clamping element shunting transient energy to ground during electrostatic discharge. Use Value: Sub-1 ns response time and ≤100 nA leakage preserve signal integrity while meeting automotive ESD immunity requirements. |
| Automotive Sensor Biasing | High-Frequency Signal Clamping |
|
Use Scenario: Biasing Hall-effect position sensors in electric power steering (EPS) control units. IC Role / Device Role / Timing Role: Precision voltage reference establishing stable excitation voltage for magnetic field measurement circuitry. Use Value: AEC-Q101 qualification and 150 °C max junction temperature ensure operation in under-hood environments. |
Use Scenario: Limiting RF envelope peaks in 2.4 GHz ISM-band receiver front-ends for wireless sensor networks. IC Role / Device Role / Timing Role: Low-capacitance (≤80 pF) Zener acting as amplitude limiter to prevent LNA saturation. Use Value: 80 pF capacitance at 0 V bias minimizes signal distortion while providing robust overvoltage clamping. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX884-C18,315 | ±5 % tolerance (17.1–18.9 V), higher 225 Ω max rdiff, identical SOD882 package | Acceptable where cost sensitivity outweighs regulation precision; less suitable for feedback references | Select when budget constraints dominate and ±5 % voltage error is acceptable in non-critical biasing |
| MMSZ5245B-7-F | ±5 % tolerance (17.1–18.9 V), SOD-123 package (2.7 × 1.6 mm), 500 mW Ptot | Requires larger PCB area but supports higher continuous power in legacy designs | Choose when existing SOD-123 footprints exist or >250 mW dissipation is required in non-space-constrained layouts |
Compared with BZX884-C18,315, the BZX884-B18,315 offers tighter voltage control and lower impedance for precision analog use; versus MMSZ5245B-7-F, it trades power headroom for 60 % smaller board area and automotive qualification.
Availability
BZX884-B18,315 is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial voltage reference design, and high-frequency ESD protection requiring stable component supply and full traceability.
Supply support for BZX884-B18,315 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 components and advanced packaging.
The BZX884 series belongs to Nexperia's precision Zener diode product line, engineered specifically for space-constrained voltage regulation and ESD protection in automotive, industrial, and consumer electronics.
FAQ
What is the maximum reverse current the BZX884-B18,315 can handle in surge conditions?
The BZX884-B18,315 supports a non-repetitive peak reverse current (IZSM) of 1.5 A for 100 µs pulses at 25 °C ambient, as defined in Table 5 of the datasheet. This rating assumes proper PCB thermal design per SOD882 mounting guidelines and is validated for single-event ESD clamping, not continuous operation.
How does the +14.4 mV/K temperature coefficient affect long-term voltage stability?
The +14.4 mV/K coefficient means the Zener voltage increases by ~14.4 mV per degree Celsius rise in junction temperature at 5 mA. Over a −40 °C to +125 °C range, this results in a total shift of ~2.36 V - a known, linear effect that can be compensated in system-level calibration or used intentionally in temperature-sensing circuits.
Is the SOD882 package compatible with standard reflow soldering profiles?
Yes - Nexperia specifies reflow soldering as the only recommended method for SOD882. The device complies with JEDEC J-STD-020 moisture sensitivity level 1 and supports peak temperatures up to 260 °C. Figure 12 provides the exact solder paste stencil and land pattern dimensions for reliable attachment.
Can BZX884-B18,315 replace older Zener diodes like 1N4746A in existing designs?
Direct replacement requires verification of package compatibility (SOD882 vs. DO-41), thermal derating (250 mW vs. 1 W), and circuit impedance. While electrical parameters align closely, the smaller SOD882 footprint and lower power rating mean board layout and power dissipation must be re-evaluated before substitution.
BZX884-B18,315 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- SOD-882
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 18 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 45 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 12.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1006-2
BZX884-B18,315 FAQ
1.How can I place an order for BZX884-B18,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX884-B18,315 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 BZX884-B18,315 reliable?
The price and inventory of BZX884-B18,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX884-B18,315 is usually 5 days.
3.What payment methods are accepted for BZX884-B18,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX884-B18,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX884-B18,315?
BZX884-B18,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX884-B18,315 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 BZX884-B18,315?
For technical support, including BZX884-B18,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX884-B18,315 requirements.
6.How does Aetrix verify that BZX884-B18,315 is sourced from the original manufacturer or authorized distributors?
All BZX884-B18,315 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 BZX884-B18,315 meets industry standards.
7.What is the process for return or replacement of BZX884-B18,315?
All BZX884-B18,315 units undergo pre-shipment inspection (PSI). If there is an issue with BZX884-B18,315, 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 BZX884-B18,315 part is unused and in its original packaging.
Return procedure for BZX884-B18,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX884-B18,315 Tags
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MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
onsemi
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SMAJ4744A-TP
Micro Commercial Co
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BZT52C3V6LP-7
Diodes Incorporated
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SMAZ12-13-F
Diodes Incorporated
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