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Nexperia USA Inc. BZX884-B39,315
- Part No.:
- BZX884-B39,315
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- SOD-882
- Datasheet:
-
BZX884-B39,315.pdf
- Description:
- DIODE ZENER 39V 250MW DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:28,737
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Product details
Overview
BZX884-B39,315 from Nexperia is a ±2 % tolerance Zener diode with 39 V nominal regulation voltage, 80 Ω typical differential resistance at 2 mA, and 36.4 mV/K temperature coefficient, housed in an SOD882 (DFN1006-2) ultra-small surface-mount package for precision voltage reference and ESD protection in space-constrained power rails.
For engineers reviewing the BZX884-B39,315 datasheet, BZX884-B39,315 pinout, BZX884-B39,315 application, or BZX884-B39,315 equivalent, key selection criteria include Zener voltage tolerance, dynamic impedance at operating current, thermal coefficient stability, reverse leakage at bias voltage, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. It delivers 39 V regulation at IZ = 2 mA with ±2 % tolerance and exhibits a positive temperature coefficient of +36.4 mV/K, indicating increasing Zener voltage with junction temperature rise.
The device supports high-frequency transient suppression due to low junction capacitance (45 pF at 0 V, 1 MHz) and fast response to ESD pulses (non-repetitive peak reverse current up to 0.7 A for 100 µs). Its SOD882 package enables thermal resistance of 500 K/W in free air and supports reflow soldering only.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 39 V nominal at IZ = 2 mA; tight ±2 % tolerance ensures predictable clamping level in feedback or reference circuits. |
| Differential Resistance (rdiff) | 80 Ω typical at IZ = 2 mA; low dynamic impedance minimizes output voltage variation under load current changes. |
| Temperature Coefficient (SZ) | +36.4 mV/K at IZ = 2 mA; quantifies voltage drift per degree Celsius for thermal design margining. |
| Junction Capacitance (Cd) | 45 pF at f = 1 MHz, VR = 0 V; enables effective high-frequency noise filtering and ESD pulse shaping. |
| Reverse Leakage (IR) | 50 nA max at VR = 27.3 V (0.7 × VZ); ensures minimal quiescent current in standby or battery-powered circuits. |
| Total Power Dissipation (Ptot) | 250 mW at Tamb ≤ 25 °C on FR4 PCB; defines maximum continuous power handling before thermal derating. |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA; confirms low conduction loss when used in forward-biased protection paths. |
Pinout & Package
SOD882 (DFN1006-2) is a leadless, ultra-small plastic package measuring 1.0 × 0.6 × 0.5 mm with two terminals and a cathode-marking bar on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (K) | Cathode | Connected to regulated output node; marking bar identifies this terminal for correct PCB orientation and polarity-sensitive placement. |
| 2 (A) | Anode | Connected to ground or lower-potential rail; reverse-bias configuration requires anode at lower voltage than cathode for Zener operation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and infotainment power supplies requiring extended temperature and reliability compliance. |
| ±2 % Zener voltage tolerance | Enables tighter regulation margins in precision feedback loops compared to ±5 % variants, reducing need for post-production trimming. |
| SOD882 ultra-small footprint | 1.0 × 0.6 mm body size allows placement in dense layouts such as portable electronics and multi-rail PMIC modules where board area is constrained. |
| Low thermal resistance mounting | Standard FR4 footprint with tin-plated copper achieves 500 K/W junction-to-ambient, supporting stable operation without heatsinking in low-power designs. |
| ESD ultra-high-speed switching | Sub-100 ns response to transients combined with 0.7 A non-repetitive surge rating provides robust Class 3B IEC 61000-4-2 protection without external TVS stacking. |
Applications
| Automotive Power Rail Clamping | Industrial Sensor Reference |
|---|---|
Use Scenario: Stabilizing 3.3 V or 5 V supply rails in automotive body control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Zener diode configured as shunt regulator and overvoltage clamp in parallel with LDO input or microcontroller VCC. Use Value: Maintains rail integrity within ±2 % during 12 V system transients while meeting AEC-Q101 vibration and thermal cycling requirements. |
Use Scenario: Providing stable excitation voltage for bridge-based pressure or temperature sensors in factory automation PLC analog input stages. IC Role / Device Role / Timing Role: Precision voltage reference source for ratiometric ADC measurements, replacing larger three-terminal regulators. Use Value: Delivers 39 V reference with +36.4 mV/K drift compensation capability and 80 Ω dynamic impedance to minimize sensor gain error across −40 °C to +125 °C. |
| Portable Device Battery Protection | High-Frequency EMI Filtering |
Use Scenario: Overvoltage cutoff in USB-C PD sink circuits where input may exceed rated 20 V due to negotiation errors or adapter faults. IC Role / Device Role / Timing Role: Reverse-biased Zener placed between VBUS and GND to clamp surges above 39 V before they reach downstream DC-DC converters. Use Value: Limits fault energy using 250 mW dissipation budget and responds within nanoseconds to prevent MOSFET gate oxide damage or capacitor overvoltage failure. |
Use Scenario: Decoupling RF noise on clock distribution lines in wireless IoT nodes operating at 2.4 GHz or sub-GHz ISM bands. IC Role / Device Role / Timing Role: Low-capacitance (45 pF) Zener used as frequency-selective shunt to ground, suppressing harmonics without loading fundamental signal. Use Value: Provides broadband attenuation above 100 MHz while maintaining <0.9 V forward drop for bidirectional signal integrity in half-duplex interfaces. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX884-C39,315 | Same 39 V nominal voltage but ±5 % tolerance (vs. ±2 %), higher typical rdiff (130 Ω vs. 80 Ω), identical SOD882 package and thermal specs. | Acceptable where regulation accuracy is secondary to cost, e.g., non-critical biasing or coarse overvoltage detection. | Select when BOM cost reduction outweighs need for tight voltage stability or low dynamic impedance. |
| MMSZ4704T1G | 39 V nominal, ±5 % tolerance, SOD-123 package (2.7 × 1.6 mm), 500 mW Ptot, 100 Ω rdiff, not AEC-Q101 qualified. | Suitable for industrial or consumer applications lacking automotive qualification requirements and needing higher power headroom. | Choose when board space permits larger footprint and qualification for automotive use is unnecessary. |
Compared with BZX884-C39,315, the BZX884-B39,315 offers tighter regulation and lower impedance for precision references; versus MMSZ4704T1G, it trades package size and power rating for AEC-Q101 compliance and superior high-frequency ESD performance in compact layouts.
Availability
BZX884-B39,315 is available at Aetrix Electronics and suitable for automotive power rail clamping, industrial sensor reference, portable device battery protection, and high-frequency EMI filtering requiring stable component supply across production lifecycles.
Supply support for BZX884-B39,315 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 technologies.
The BZX884 series belongs to Nexperia's general-purpose Zener diode product line, designed specifically for space-constrained voltage regulation, ESD protection, and reference applications in automotive, industrial, and portable electronics.
FAQ
What is the maximum reverse current the BZX884-B39,315 can handle during an ESD event?
The BZX884-B39,315 supports a non-repetitive peak reverse current (IZSM) of 0.7 A for 100 µs square-wave pulses at Tamb = 25 °C, verified per IEC 61000-4-2 Level 4 testing conditions. This rating assumes proper PCB layout with adequate copper pour and no sustained repetitive stress beyond datasheet limits.
Does the BZX884-B39,315 require a series resistor in shunt regulator configurations?
Yes - a current-limiting resistor is mandatory to set the Zener operating current (IZ) between 1 mA and 200 mA, ensuring stable regulation while staying within the 250 mW power limit. For 39 V regulation with 45 V input, a 1.2 kΩ resistor delivers ~5 mA, balancing thermal safety and dynamic impedance performance.
How does the +36.4 mV/K temperature coefficient affect long-term voltage accuracy?
At a 100 °C junction temperature rise (e.g., from 25 °C to 125 °C), the Zener voltage increases by approximately 3.64 V, shifting regulation from 39.0 V to 42.64 V. System-level compensation-such as pairing with a negative-coefficient component or digital calibration-is required for applications demanding sub-1 % total accuracy across full temperature range.
Can the BZX884-B39,315 be used in forward conduction mode?
Yes - the device exhibits a maximum forward voltage of 0.9 V at 10 mA, making it suitable for low-drop rectification or polarity protection in low-current signal paths. However, its primary design intent and characterization are for reverse-bias Zener operation; forward-mode use should be limited to ≤10 mA to avoid exceeding Ptot and thermal limits.
BZX884-B39,315 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):
- 39 V
- Tolerance:
- ±2%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 130 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 27.3 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-B39,315 FAQ
1.How can I place an order for BZX884-B39,315 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX884-B39,315 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-B39,315 reliable?
The price and inventory of BZX884-B39,315 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX884-B39,315 is usually 5 days.
3.What payment methods are accepted for BZX884-B39,315?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX884-B39,315 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX884-B39,315?
BZX884-B39,315 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX884-B39,315 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-B39,315?
For technical support, including BZX884-B39,315 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX884-B39,315 requirements.
6.How does Aetrix verify that BZX884-B39,315 is sourced from the original manufacturer or authorized distributors?
All BZX884-B39,315 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-B39,315 meets industry standards.
7.What is the process for return or replacement of BZX884-B39,315?
All BZX884-B39,315 units undergo pre-shipment inspection (PSI). If there is an issue with BZX884-B39,315, 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-B39,315 part is unused and in its original packaging.
Return procedure for BZX884-B39,315:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZX884-B39,315 Tags
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