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Nexperia USA Inc. BZX884-B51,315
- Part No.:
- BZX884-B51,315
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX884-B51,315.pdf
- Description:
- DIODE ZENER 51V 250MW DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:7,973
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Product details
Overview
BZX884-B51,315 from Nexperia is a ±2 % tolerance Zener voltage regulator diode in SOD882 (DFN1006-2) package, rated for 51 V nominal Zener voltage at 5 mA, 250 mW total power dissipation, and 90 Ω typical differential resistance. It serves as a precision voltage reference or overvoltage clamp in low-power analog and digital supply rails.
For engineers reviewing the BZX884-B51,315 datasheet, BZX884-B51,315 pinout, BZX884-B51,315 application, or BZX884-B51,315 equivalent, this page delivers verified Zener voltage, tolerance, thermal resistance, reverse leakage, and AEC-Q101 qualification status - all critical for automotive-grade voltage regulation and ESD protection design.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable voltage under varying current loads, with temperature coefficient of +51 mV/K at IZ = 5 mA. Its ultra-small DFN1006-2 footprint enables high-density PCB layouts while supporting high-frequency transient suppression due to low junction capacitance (40 pF at 0 V).
Designed for surface-mount assembly only, it features AEC-Q101 qualification for automotive use, 150 °C maximum junction temperature, and non-repetitive peak reverse current capability of 0.4 A at 100 µs pulse width - enabling robust surge handling in compact power management nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 49.98 V to 52.02 V at IZ = 5 mA - defines tight regulation window for 51 V reference applications |
| Tolerance | ±2 % - ensures predictable clamping threshold without post-production trimming |
| Differential Resistance (rdiff) | 90 Ω max at IZ = 5 mA - determines output impedance and load regulation sensitivity |
| Reverse Leakage (IR) | 50 nA max at VR = 0.7 × VZnom - guarantees minimal standby current in always-on circuits |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C on FR4 PCB - sets maximum continuous DC or pulsed power handling |
| Junction-to-Ambient Thermal Resistance (Rth(j-a)) | 500 K/W - informs thermal derating requirements for elevated ambient temperatures |
| Capacitance (Cd) | 40 pF at f = 1 MHz, VR = 0 V - supports high-frequency noise filtering and ESD response |
Pinout & Package
SOD882 (DFN1006-2) is a leadless ultra-small plastic package measuring 1.0 × 0.6 × 0.5 mm, with exposed copper terminals on the bottom and cathode marked by a bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (K) | Connected to regulated output node; polarity marker aligns with PCB silkscreen bar |
| 2 | Anode (A) | Connected to ground or lower-potential rail; forms reverse-biased junction for Zener operation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics including body control modules and sensor interfaces |
| Ultra-small DFN1006-2 package | Enables placement in space-constrained locations such as portable medical devices and wearables |
| Low 40 pF junction capacitance | Preserves signal integrity in high-speed data lines during ESD events |
| 150 °C maximum junction temperature | Supports operation in under-hood automotive environments without thermal shutdown |
| Non-repetitive peak reverse current: 0.4 A | Withstands IEC 61000-4-2 Level 4 ESD pulses (8 kV contact / 15 kV air) without degradation |
Applications
| Automotive Sensor Reference | Industrial Analog Input Protection |
|---|---|
Use Scenario: Providing stable 51 V bias for Hall-effect position sensors in EPS systems. IC Role / Device Role / Timing Role: Zener voltage reference establishing precise excitation voltage for ratiometric sensing. Use Value: ±2 % tolerance ensures sensor output accuracy remains within ASIL-B error bands across temperature. |
Use Scenario: Clamping overvoltage transients on 4–20 mA current loop inputs in PLC analog modules. IC Role / Device Role / Timing Role: Reverse-biased shunt protector limiting input voltage to safe levels during lightning-induced surges. Use Value: 250 mW rating and 500 K/W thermal resistance allow sustained clamping without thermal runaway at 70 °C ambient. |
| Portable Medical Device Power Rail Clamp | High-Frequency RF Front-End Biasing |
Use Scenario: Protecting lithium battery monitor ICs from voltage spikes during hot-plug events in infusion pumps. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp placed directly at IC supply pin. Use Value: 40 pF capacitance avoids loading sensitive ADC reference inputs while maintaining sub-100 ns response. |
Use Scenario: Generating stable 51 V bias for GaN FET gate drivers in 5G base station power amplifiers. IC Role / Device Role / Timing Role: Low-noise DC voltage source replacing bulkier LDO solutions in RF subsystems. Use Value: 90 Ω differential resistance minimizes ripple coupling into RF signal paths during modulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BZT52-B51 | Same ±2 % tolerance and 51 V nominal Zener voltage, but in SOD-123 package (2.7 × 1.6 mm); 400 mW Ptot | Larger footprint limits use in ultra-dense layouts; higher power rating suits higher-current clamping | Select when board space permits and >250 mW dissipation is required |
| Vishay PLZ51B | ±5 % tolerance, same SOD882 package, 500 mW Ptot, 100 Ω rdiff; not AEC-Q101 qualified | Looser voltage tolerance reduces precision in reference applications; higher power supports longer surge events | Select for cost-sensitive industrial designs where AEC-Q101 is unnecessary |
Compared with BZX884-B51,315, BZT52-B51 trades miniaturization for higher power and larger footprint, while PLZ51B sacrifices tolerance and automotive qualification for cost and surge margin - making the Nexperia part optimal for space-constrained, AEC-Q101–compliant 51 V reference designs.
Availability
BZX884-B51,315 is available at Aetrix Electronics and suitable for automotive sensor reference, industrial analog input protection, portable medical device power rail clamp, and high-frequency RF front-end biasing requiring stable component supply across production lifecycles.
Supply support for BZX884-B51,315 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 essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET devices with emphasis on reliability and manufacturability.
The BZX884 series belongs to Nexperia's general-purpose Zener diode product line, engineered specifically for precision voltage regulation and ESD protection in space-constrained, high-reliability applications including automotive and industrial electronics.
FAQ
What is the maximum reverse current before breakdown for BZX884-B51,315?
At VR = 0.7 × VZnom (35.7 V), the maximum reverse leakage current is 50 nA. This ultra-low leakage ensures negligible quiescent power draw in always-on monitoring circuits and preserves battery life in portable systems.
Can BZX884-B51,315 be used in reflow soldering processes?
Yes - the SOD882 package is qualified exclusively for reflow soldering per JEDEC J-STD-020. Recommended profile uses peak temperature ≤ 260 °C for ≤ 30 seconds, with no hand-soldering or wave soldering permitted due to thermal stress risks on the ultra-thin leadframe.
How does the +51 mV/K temperature coefficient affect regulation stability?
The positive temperature coefficient means VZ increases by ~51 mV per °C rise in junction temperature. At 5 mA bias, this yields ~1.5 V drift over a 30 °C ambient range - acceptable for non-critical clamping but requires compensation in precision reference designs.
Is the marking code 'CD' confirmed for BZX884-B51,315?
Yes - Table 4 confirms 'CD' as the marking code for BZX884-B51. The cathode is identified by a bar adjacent to pin 1 on the top surface, consistent with SOD882 mechanical drawing Figure 11 and Nexperia's standard orientation convention.
BZX884-B51,315 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):
- 51 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 180 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 35.7 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-B51,315 FAQ
1.How can I place an order for BZX884-B51,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX884-B51,315 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-B51,315 reliable?
The price and inventory of BZX884-B51,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX884-B51,315 is usually 5 days.
3.What payment methods are accepted for BZX884-B51,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX884-B51,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX884-B51,315?
BZX884-B51,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX884-B51,315 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-B51,315?
For technical support, including BZX884-B51,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX884-B51,315 requirements.
6.How does Aetrix verify that BZX884-B51,315 is sourced from the original manufacturer or authorized distributors?
All BZX884-B51,315 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-B51,315 meets industry standards.
7.What is the process for return or replacement of BZX884-B51,315?
All BZX884-B51,315 units undergo pre-shipment inspection (PSI). If there is an issue with BZX884-B51,315, 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-B51,315 part is unused and in its original packaging.
Return procedure for BZX884-B51,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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