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Nexperia USA Inc. BZX884S-B56-QYL
- Part No.:
- BZX884S-B56-QYL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX884S-B56-QYL.pdf
- Description:
- DIODE ZENER 56V 365MW DFN1006BD
- Quantity:
- Payment:
- Shipping:
Inventory:940
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Product details
Overview
BZX884S-B56-QYL from Nexperia is a ±2 % tolerance Zener voltage regulator diode in a DFN1006BD-2 (SOD882BD) leadless SMD package, designed for precision voltage reference and overvoltage protection in automotive-grade circuits. It delivers a nominal 56 V Zener voltage at 2 mA test current, with 100 Ω typical differential resistance, 70 μA max reverse leakage at 45.4 V, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the BZX884S-B56-QYL datasheet, BZX884S-B56-QYL pinout, BZX884S-B56-QYL application, or BZX884S-B56-QYL equivalent, this page provides verified electrical parameters, thermal performance data, side-wettable flank soldering guidance, and automotive-compliant selection criteria - all derived from Nexperia's official Rev. 2 product data sheet dated 5 May 2021.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage regulation across load and line variations. Its 56 V nominal working voltage is specified at IZ = 2 mA, with temperature coefficient of +52.2 mV/K and 100 Ω typical dynamic impedance - enabling predictable clamping behavior in transient suppression and reference circuits.
The device uses planar epitaxial construction with side-wettable flanks for automated optical solder-joint inspection. Its ultra-small 1.0 mm × 0.6 mm footprint and 0.47 mm height support high-density PCB layouts while meeting AEC-Q101 stress testing requirements for humidity, temperature cycling, and mechanical shock.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 54.9 V to 57.1 V at IZ = 2 mA - ensures tight regulation window for 56 V rail monitoring |
| Differential Resistance rdif | 100 Ω typical at IZ = 2 mA - low impedance improves voltage stability under varying load current |
| Reverse Leakage IR | ≤ 0.05 μA at VR = 45.4 V - minimizes standby power loss in always-on automotive modules |
| Power Dissipation Ptot | 365 mW on FR4 PCB with 70 μm copper - defines maximum continuous clamping energy without derating |
| Junction Temperature Tj | −55 °C to +150 °C - supports operation in engine control units and ADAS sensor housings |
| Thermal Resistance Rth(j-a) | 340 K/W - determines temperature rise above ambient under full power dissipation |
Pinout & Package
DFN1006BD-2 (SOD882BD) ultra-small leadless package: 1.0 mm × 0.6 mm × 0.47 mm body, 0.65 mm pitch, side-wettable flanks for automated solder-joint inspection. Cathode identified by marking bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; accepts reverse bias for Zener conduction |
| 2 | Anode (A) | Connected to ground or lower-potential reference; completes bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including engine control, body electronics, and ADAS sensors |
| Side-wettable flanks | Enables automated optical inspection (AOI) of solder joints without X-ray imaging |
| ±2 % voltage tolerance | Reduces need for post-assembly trimming in precision reference designs |
| Low 0.05 μA leakage at VR = 45.4 V | Extends battery life in always-on vehicle subsystems such as telematics and alarm controllers |
| 150 °C max junction temperature | Supports placement near heat sources like power converters and motor drivers |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Clamping 56 V supply rail transients induced by alternator load dump in diesel ECU power stage. IC Role / Device Role / Timing Role: Zener-based overvoltage protector placed between main 56 V rail and downstream LDO input. Use Value: Limits voltage excursion to ≤57.1 V during 100 ms load-dump events, preventing damage to 60 V-rated regulators. |
Use Scenario: Protecting 24 V analog input channel of modular PLC against field-wiring faults and inductive kickback. IC Role / Device Role / Timing Role: Precision shunt clamp referenced to system ground, absorbing fault energy before signal conditioning ICs. Use Value: Maintains ≤100 Ω dynamic impedance at 2 mA, ensuring <1 V deviation during 100 mA surge events per IEC 61000-4-5. |
| Automotive Infotainment Power Sequencing | Medical Diagnostic Equipment Reference |
Use Scenario: Providing stable 56 V reference for power sequencing logic in head-unit DC-DC controller startup sequence. IC Role / Device Role / Timing Role: Voltage reference element feeding comparator input that enables downstream buck converter enable signal. Use Value: ±2 % tolerance and +52.2 mV/K tempco allow accurate timing margin calculation across −40 °C to +125 °C operating range. |
Use Scenario: Stabilizing high-voltage bias supply for photomultiplier tube (PMT) amplifiers in portable X-ray analyzers. IC Role / Device Role / Timing Role: Low-noise Zener reference generating precise 56 V bias for PMT gain control circuitry. Use Value: 0.05 μA max leakage at 45.4 V prevents drift in ultra-low-current feedback paths critical for sub-1% measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX884S-C56-Q | ±5 % tolerance (52 V–60 V range) vs. ±2 % for BZX884S-B56-QYL | Acceptable where cost sensitivity outweighs precision requirement | Select when budget constraints dominate and 56 V ±4 V regulation is sufficient |
| MMSZ5255B-TP | Same 56 V nominal, but SOD-123 package (2.7 mm × 1.6 mm), higher 500 mW Ptot | Requires larger PCB area; better suited for non-automotive industrial use | Choose if higher power handling is needed and AEC-Q101 is not required |
Compared with BZX884S-C56-Q, the BZX884S-B56-QYL offers tighter voltage control essential for automotive safety-critical functions; versus MMSZ5255B-TP, it trades package size and power rating for AEC-Q101 compliance and AOI-compatible side-wettable flanks in space-constrained modules.
Availability
BZX884S-B56-QYL is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, infotainment power sequencing, and medical diagnostic equipment requiring stable component supply with AEC-Q101 assurance.
Supply support for BZX884S-B56-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 high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and advanced packaging technologies.
The BZX884S-Q series belongs to Nexperia's automotive-grade Zener diode portfolio, engineered specifically for precision voltage regulation and transient protection in harsh-environment electronic control modules.
FAQ
What is the maximum forward current rating for BZX884S-B56-QYL?
The absolute maximum forward current is 200 mA per Table 5 (Limiting Values). However, forward conduction is not its intended operating mode - the device is optimized for reverse-bias Zener regulation. Continuous forward current above 10 mA risks thermal overstress due to its 365 mW total power limit and 340 K/W junction-to-ambient thermal resistance.
Does BZX884S-B56-QYL require a heatsink in standard PCB mounting?
No heatsink is required when mounted on a standard FR4 PCB with single-sided 70 μm copper and tin plating, as specified in the datasheet. At full 365 mW dissipation, the calculated junction temperature rise is 124 K (340 K/W × 0.365 W), resulting in Tj = 149 °C at 25 °C ambient - within the 150 °C absolute maximum rating. Derating is advised above 75 °C ambient.
How does the side-wettable flank feature impact reflow soldering process?
The side-wettable flanks enable reliable solder joint formation and automated optical inspection (AOI) without X-ray. Reflow must follow Nexperia's recommended profile for DFN1006BD-2: peak temperature 260 °C, time above liquidus 60–150 s, and ramp rates per JEDEC J-STD-020. The 0.02 mm max solder protrusion limit ensures coplanarity for fine-pitch placement.
Can BZX884S-B56-QYL replace older BZX84-C56 variants in existing designs?
Yes, with validation: BZX884S-B56-QYL matches the electrical characteristics of BZX84-C56 but adds AEC-Q101 qualification, side-wettable flanks, and tighter ±2 % tolerance. Mechanical compatibility requires confirming pad layout matches the DFN1006BD-2 footprint (1.0 mm × 0.6 mm, 0.65 mm pitch), not the legacy SOT-23 outline.
BZX884S-B56-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):
- 56 V
- Tolerance:
- ±1.96%
- Power - Max:
- 365 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 39.2 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-B56-QYL FAQ
1.How can I place an order for BZX884S-B56-QYL through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX884S-B56-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-B56-QYL reliable?
The price and inventory of BZX884S-B56-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-B56-QYL is usually 5 days.
3.What payment methods are accepted for BZX884S-B56-QYL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX884S-B56-QYL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX884S-B56-QYL?
BZX884S-B56-QYL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX884S-B56-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-B56-QYL?
For technical support, including BZX884S-B56-QYL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX884S-B56-QYL requirements.
6.How does Aetrix verify that BZX884S-B56-QYL is sourced from the original manufacturer or authorized distributors?
All BZX884S-B56-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-B56-QYL meets industry standards.
7.What is the process for return or replacement of BZX884S-B56-QYL?
All BZX884S-B56-QYL units undergo pre-shipment inspection (PSI). If there is an issue with BZX884S-B56-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-B56-QYL part is unused and in its original packaging.
Return procedure for BZX884S-B56-QYL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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