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Nexperia USA Inc. BZX884-B20,315
- Part No.:
- BZX884-B20,315
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX884-B20,315.pdf
- Description:
- DIODE ZENER 20V 250MW DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:8,200
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Product details
Overview
BZX884-B20,315 from Nexperia is a Zener voltage regulator diode in the BZX884 series, designed for precision voltage reference and overvoltage protection in compact SMD designs. It delivers a nominal 20 V Zener voltage at 5 mA with ±2 % tolerance, 60 Ω typical differential resistance, and 16.4 mV/K temperature coefficient - enabling stable regulation in automotive-grade circuits operating from −55 °C to +150 °C.
For engineers reviewing the BZX884-B20,315 datasheet, BZX884-B20,315 pinout, BZX884-B20,315 application, or BZX884-B20,315 equivalent, key selection criteria include its AEC-Q101 qualification, ultra-small DFN1006-2 (SOD882) package, 250 mW power rating, low reverse leakage (<100 nA at 14 V), and ESD protection capability in high-frequency signal paths.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable reference voltage under varying load and temperature conditions. Its 20 V nominal Zener voltage is specified at IZ = 5 mA, with a tight ±2 % tolerance and low 60 Ω differential resistance ensuring minimal voltage shift across current changes.
The device features an AEC-Q101 qualification, junction temperature range of −55 °C to +150 °C, and thermal resistance of 500 K/W (junction-to-ambient, free air). Its 1.0 × 0.6 × 0.5 mm SOD882 package supports high-density PCB layouts while maintaining reliable thermal performance under pulsed surge conditions up to 1.5 A (100 µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19.6 V to 20.4 V at IZ = 5 mA - ensures precise voltage clamping within ±2 % tolerance for reference and protection circuits |
| Differential Resistance (rdiff) | 60 Ω typical at IZ = 5 mA - minimizes output voltage variation under dynamic load current changes |
| Temperature Coefficient (SZ) | +16.4 mV/K at IZ = 5 mA - enables predictable, linear voltage drift over temperature for compensated designs |
| Reverse Leakage (IR) | <100 nA at VR = 14 V - guarantees low standby power loss and high impedance in off-state signal paths |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C on FR4 PCB - defines maximum continuous DC power handling in standard mounting |
| Non-repetitive Peak Reverse Current (IZSM) | 1.5 A at tp = 100 µs - supports transient suppression of short-duration ESD or surge events |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - confirms low conduction loss when used in forward-biased ESD clamp configurations |
Pinout & Package
Package: DFN1006-2 (SOD882), leadless ultra-small surface-mount plastic package measuring 1.0 × 0.6 × 0.5 mm; cathode identified by marking bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (A) | Anode | Connected to ground or lower-potential rail; completes bias path for reverse conduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use, including engine control units and infotainment power rails |
| ±2 % Zener voltage tolerance | Enables tighter system-level voltage margining than ±5 % variants, reducing need for post-regulation trimming |
| Ultra-small SOD882 footprint | 1.0 × 0.6 mm body allows placement in space-constrained areas such as sensor modules and portable IoT devices |
| Low 100 nA reverse leakage at 14 V | Minimizes quiescent current draw in always-on monitoring circuits and battery-backed systems |
| 1.5 A non-repetitive surge capability | Provides robust ESD immunity per IEC 61000-4-2 Level 4 without external TVS augmentation |
Applications
| Automotive Sensor Reference | USB Port ESD Clamp |
|---|---|
|
Use Scenario: Providing stable 20 V reference for analog front-end circuitry in engine coolant temperature sensors. IC Role / Device Role / Timing Role: Zener voltage reference diode maintaining excitation voltage accuracy across −40 °C to +125 °C ambient. Use Value: ±2 % tolerance and +16.4 mV/K temperature coefficient enable <1 % total error over full automotive temperature range without calibration. |
Use Scenario: Protecting USB 2.0 data lines against contact ESD events in automotive head units. IC Role / Device Role / Timing Role: Ultra-fast ESD clamp placed between D+ and D− lines and chassis ground. Use Value: 1.5 A peak surge rating and sub-100 ns response time suppress 8 kV/15 kV contact discharges without signal distortion. |
| Industrial PLC Input Protection | DC-DC Converter Feedback Divider |
|
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring transients. IC Role / Device Role / Timing Role: Overvoltage clamp limiting input voltage to 20 V before downstream optocoupler or MCU GPIO. Use Value: 250 mW continuous dissipation and AEC-Q101 reliability ensure long-term operation in harsh industrial environments. |
Use Scenario: Setting precise feedback threshold in isolated flyback converters delivering 20 V output. IC Role / Device Role / Timing Role: Precision Zener element in secondary-side voltage divider network. Use Value: 60 Ω differential resistance maintains regulation accuracy despite load-induced current variations in feedback loop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX884-C20,315 | Same 20 V nominal voltage but ±5 % tolerance and higher 70 Ω rdiff | Acceptable where cost sensitivity outweighs regulation precision; less suitable for closed-loop feedback | Select for cost-driven industrial controls where ±5 % voltage margin is acceptable |
| MMSZ5249B-7-F | 20 V nominal, ±5 %, SOD-123 package (2.7 × 1.6 mm), 500 mW Ptot, 25 Ω rdiff | Larger footprint and higher power allow higher surge handling but reduce board density | Choose when higher continuous power (500 mW) or lower dynamic impedance is required in non-space-constrained designs |
Compared with BZX884-C20,315, the BZX884-B20,315 offers tighter voltage control and lower impedance for precision references; versus MMSZ5249B-7-F, it trades power and impedance for 60 % smaller area and AEC-Q101 compliance - making it optimal for automotive and miniaturized industrial applications.
Availability
BZX884-B20,315 is available at Aetrix Electronics and suitable for automotive sensor reference, USB port ESD protection, and industrial PLC input protection requiring stable component supply, AEC-Q101 qualification, and ultra-compact SMD packaging.
Supply support for BZX884-B20,315 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, reliable discrete and logic devices for automotive, industrial, and consumer markets.
The BZX884 series belongs to Nexperia's precision Zener diode product line, engineered specifically for space-constrained, high-reliability voltage regulation and ESD protection in automotive and industrial applications.
FAQ
What is the maximum continuous reverse current this diode can handle?
The BZX884-B20,315 has no defined maximum continuous reverse current; instead, its safe operating limit is governed by power dissipation. At 20 V Zener voltage, the maximum continuous reverse current is 12.5 mA (250 mW ÷ 20 V), assuming ambient temperature ≤25 °C and standard FR4 PCB mounting. Derating applies above 25 °C per the 500 K/W thermal resistance.
Is this diode suitable for bidirectional ESD protection?
No - the BZX884-B20,315 is a unidirectional Zener diode with cathode/anode polarity. For bidirectional ESD protection, two devices must be connected in series opposition (anode-to-anode or cathode-to-cathode), or a dedicated bidirectional TVS like PESD5V0S1BA should be used. Its single-polarity structure limits clamping to one voltage polarity only.
How does the temperature coefficient affect regulation accuracy over temperature?
With a +16.4 mV/K temperature coefficient, the Zener voltage increases by approximately 1.64 V over a 100 °C rise (e.g., from 25 °C to 125 °C). This results in ~8.2 % deviation from nominal 20 V - a critical factor in wide-temperature applications. Designers must either compensate in firmware, select a lower-coefficient variant (e.g., BZX884-B6V8 at +3.0 mV/K), or constrain operating temperature range.
Can this part replace older BZX85 or BZX79 series diodes?
No direct replacement - the BZX884-B20,315 uses a leadless DFN1006-2 package (1.0 × 0.6 mm), whereas BZX85/BZX79 are through-hole DO-35 or SMD SOD-123 packages. Pin compatibility, thermal behavior, and surge response differ significantly. Migration requires PCB redesign, layout validation, and requalification of surge performance due to the smaller thermal mass and different parasitic capacitance.
BZX884-B20,315 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):
- 20 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 14 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-B20,315 FAQ
1.How can I place an order for BZX884-B20,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX884-B20,315 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-B20,315 reliable?
The price and inventory of BZX884-B20,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX884-B20,315 is usually 5 days.
3.What payment methods are accepted for BZX884-B20,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX884-B20,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX884-B20,315?
BZX884-B20,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX884-B20,315 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-B20,315?
For technical support, including BZX884-B20,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX884-B20,315 requirements.
6.How does Aetrix verify that BZX884-B20,315 is sourced from the original manufacturer or authorized distributors?
All BZX884-B20,315 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-B20,315 meets industry standards.
7.What is the process for return or replacement of BZX884-B20,315?
All BZX884-B20,315 units undergo pre-shipment inspection (PSI). If there is an issue with BZX884-B20,315, 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-B20,315 part is unused and in its original packaging.
Return procedure for BZX884-B20,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX884-B20,315 Tags
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