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Nexperia USA Inc. BZX884S-C18-QYL
- Part No.:
- BZX884S-C18-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX884S-C18-QYL.pdf
- Description:
- DIODE ZENER 18V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:9,839
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Product details
Overview
BZX884S-C18-QYL from Nexperia is a Zener voltage regulator diode in the BZX884S-Q series, designed for precision voltage reference and overvoltage protection in compact automotive and industrial circuits. It delivers a nominal 18 V Zener voltage (±5 % tolerance), 365 mW power dissipation, 0.9 V forward voltage at 10 mA, and operates across −55 °C to +150 °C ambient temperature - validated per AEC-Q101 for under-hood automotive use.
For engineers reviewing the BZX884S-C18-QYL datasheet, BZX884S-C18-QYL pinout, BZX884S-C18-QYL application, or BZX884S-C18-QYL equivalent, key selection criteria include its DFN1006BD-2 side-wettable flank package, low thermal resistance (340 K/W), tight 18 V regulation with 12.6 mV/K temperature coefficient at 5 mA, and suitability for space-constrained ECU power rail clamping and sensor biasing.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage across load variations and supply fluctuations. Its 18 V nominal Zener voltage is specified at 5 mA test current, with differential resistance of 50 Ω (typ) and reverse current ≤0.05 μA at 13.8 V.
The device uses silicon planar technology with side-wettable flanks for automated optical solder-joint inspection. Its thermal design supports operation up to 150 °C junction temperature when mounted on FR4 PCB with 70 μm copper, enabling reliable performance in high-temperature automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18 V nominal, ±5 % tolerance - ensures predictable clamping level for 12 V/24 V system rail protection |
| Power Dissipation (Ptot) | 365 mW - enables sustained regulation without heatsinking on standard FR4 PCB |
| Forward Voltage (VF) | 0.9 V at 10 mA - defines minimal conduction loss during forward-biased transient events |
| Differential Resistance (rdif) | 50 Ω typical at IZ = 5 mA - determines output impedance and regulation sensitivity to current changes |
| Temperature Coefficient (SZ) | +12.6 mV/K at IZ = 5 mA - quantifies voltage drift with temperature, critical for high-accuracy references |
| Reverse Current (IR) | ≤0.05 μA at VR = 13.8 V - guarantees low leakage below breakdown, preserving battery life in always-on systems |
| Junction Temperature (Tj) | 150 °C maximum - supports continuous operation in engine control units and ADAS modules |
Pinout & Package
Package: DFN1006BD-2 (SOD882BD), ultra-small leadless plastic package measuring 1.0 mm × 0.6 mm × 0.47 mm with side-wettable flanks for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; marking bar on top surface identifies this terminal |
| 2 | Anode (A) | Connected to ground or lower-potential rail; completes reverse-bias path for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine management and body electronics |
| Side-wettable flanks | Enables automated X-ray and AOI inspection of solder joints without requiring underfill |
| Ultra-small footprint | DFN1006BD-2 package saves >60 % board area vs. traditional SOD-323 packages |
| Wide operating temperature | −55 °C to +150 °C ambient range supports deployment in under-hood and powertrain modules |
| Low thermal resistance | 340 K/W junction-to-ambient enables stable regulation without derating at elevated temperatures |
Applications
| Automotive ECU Power Rail Clamping | Industrial Sensor Bias Reference |
|---|---|
|
Use Scenario: Protects microcontroller I/O and analog front-end inputs from load-dump transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Zener diode configured in parallel with rail to clamp voltage spikes above 18 V. Use Value: Prevents latch-up or damage to downstream ICs by limiting peak rail voltage to 18.9 V (max) during ISO 7637-2 Pulse 5a events. |
Use Scenario: Provides stable bias voltage for analog pressure or temperature sensors in factory automation PLCs. IC Role / Device Role / Timing Role: Precision shunt reference supplying fixed 18 V to sensor excitation circuitry. Use Value: Maintains <±0.5 % output stability over −40 °C to +85 °C due to low tempco and low dynamic impedance. |
| USB-C Port Overvoltage Protection | DC-DC Converter Feedback Divider Clamp |
|
Use Scenario: Safeguards USB-C PD controller ICs against accidental 20 V adapter misconnection. IC Role / Device Role / Timing Role: Reverse-biased Zener placed between VBUS and GND to absorb excess energy. Use Value: Responds within nanoseconds to clamp VBUS to ≤18.9 V, preventing damage to 20 V-rated controller pins. |
Use Scenario: Limits feedback node voltage in isolated flyback converters to prevent optocoupler saturation. IC Role / Device Role / Timing Role: Shunt element across upper resistor in feedback divider network. Use Value: Ensures feedback voltage never exceeds 18 V, maintaining stable regulation even during startup overshoot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX884B-C18-Q | ±2 % tolerance (vs. ±5 %); 40 Ω typical rdif (vs. 50 Ω) | Higher precision required in metrology-grade references or closed-loop feedback | Select when tighter voltage accuracy and lower dynamic impedance outweigh cost and availability trade-offs |
| MMSZ5245B-TP | SOD-123 package (2.7 mm × 1.4 mm); 500 mW Ptot; 18 V ±5 %; no AEC-Q101 rating | Preferred for non-automotive industrial designs where board space is less constrained | Choose for legacy designs using SOD-123 footprints or where higher power margin is needed without automotive qualification |
Compared with BZX884S-C18-QYL, the BZX884B-C18-Q offers tighter tolerance and lower impedance but lacks side-wettable flanks for AOI; MMSZ5245B-TP provides higher power handling in a larger package but omits automotive qualification and compactness.
Availability
BZX884S-C18-QYL is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, and USB-C overvoltage protection circuits requiring stable component supply with AEC-Q101 compliance and ultra-small footprint.
Supply support for BZX884S-C18-QYL 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 efficiency-driven, high-volume logic, discrete, and MOSFET solutions with strong automotive and industrial market presence.
The BZX884S-Q series belongs to Nexperia's automotive-qualified Zener diode portfolio, engineered specifically for space-constrained, high-reliability voltage regulation in harsh-environment electronic control units.
FAQ
What is the maximum reverse voltage this Zener can withstand before breakdown?
The BZX884S-C18-QYL has a nominal Zener voltage of 18 V with ±5 % tolerance, meaning breakdown occurs between 17.1 V and 18.9 V at 5 mA test current. Its absolute maximum reverse voltage is not defined separately - operation beyond 18.9 V risks exceeding power limits and thermal runaway.
Can this diode be used in series or parallel configurations for higher voltage or current handling?
Series connection is feasible for higher voltage clamping but requires matched units to avoid uneven voltage distribution; parallel use is strongly discouraged due to mismatched Zener characteristics causing current hogging and thermal instability. Derating and thermal coupling analysis are mandatory in either case.
Does the side-wettable flank feature require special stencil or reflow profile adjustments?
No special stencil is required - standard DFN1006BD-2 footprint (1.3 mm × 0.8 mm pads, 0.4 mm solder mask opening) suffices. Reflow must follow JEDEC J-STD-020 profile for MSAL3 moisture sensitivity level, with peak temperature ≤260 °C and time above liquidus 60–90 seconds.
How does the temperature coefficient affect long-term voltage stability in a 125 °C environment?
At 125 °C ambient and 5 mA bias, the +12.6 mV/K coefficient causes ~1.26 V upward shift from 25 °C baseline (100 K ΔT), resulting in ~19.26 V regulation. This is within safe operating limits but must be accounted for in precision reference designs using temperature compensation networks.
BZX884S-C18-QYL 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:
- ±2.22%
- Power - Max:
- 365 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:
- 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN1006BD-2
BZX884S-C18-QYL FAQ
1.How can I place an order for BZX884S-C18-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX884S-C18-QYL 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 BZX884S-C18-QYL reliable?
The price and inventory of BZX884S-C18-QYL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX884S-C18-QYL is usually 5 days.
3.What payment methods are accepted for BZX884S-C18-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX884S-C18-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX884S-C18-QYL?
BZX884S-C18-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX884S-C18-QYL 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 BZX884S-C18-QYL?
For technical support, including BZX884S-C18-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX884S-C18-QYL requirements.
6.How does Aetrix verify that BZX884S-C18-QYL is sourced from the original manufacturer or authorized distributors?
All BZX884S-C18-QYL 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 BZX884S-C18-QYL meets industry standards.
7.What is the process for return or replacement of BZX884S-C18-QYL?
All BZX884S-C18-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX884S-C18-QYL, 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 BZX884S-C18-QYL part is unused and in its original packaging.
Return procedure for BZX884S-C18-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX884S-C18-QYL Tags
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MMBZ5240B-7-F
Diodes Incorporated
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BZT52C5V6T-7
Diodes Incorporated
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MMSZ5231B-7-F
Diodes Incorporated
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BZT52C15-7-F
Diodes Incorporated
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BZX84C3V3LT1G
onsemi
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MMSZ5245BS-7-F
Diodes Incorporated
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MMSZ4682T1G
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BZT52C15S-7-F
Diodes Incorporated
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MM5Z5V1ST1G
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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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