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Nexperia USA Inc. BZV55-B39,115
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- Part No.:
- BZV55-B39,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
BZV55-B39,115.pdf
- Description:
- DIODE ZENER 39V 500MW LLDS
- Quantity:
- Payment:
- Shipping:
Inventory:1,010
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Product details
Overview
BZV55-B39,115 from Nexperia is a low-power Zener voltage regulator diode in a hermetically sealed glass SOD80C surface-mount package, rated for 39 V nominal regulation at 5 mA with ±2 % tolerance, 80 Ω typical differential resistance, and −2.5 mV/K temperature coefficient. It delivers stable reference voltage in power supply feedback loops, overvoltage protection circuits, and precision biasing networks for analog sensor interfaces.
For engineers reviewing the BZV55-B39,115 datasheet, BZV55-B39,115 pinout, BZV55-B39,115 application, or BZV55-B39,115 equivalent, key selection criteria include its 39 V Zener voltage tolerance, 500 mW total power dissipation limit, SOD80C thermal resistance (Rth(j-a) = 380 K/W), non-repetitive surge capability (40 W, 100 µs), and cathode/anode polarity marking per IEC standard.
Technical Context
This device operates as a reverse-biased silicon Zener diode, maintaining a stable DC output voltage across its terminals when reverse current exceeds the knee threshold. Its regulation relies on avalanche breakdown above ~6 V, confirmed by a positive temperature coefficient slope of −2.5 mV/K at IZ = 5 mA - indicating improved thermal stability versus lower-voltage Zeners.
The SOD80C package enables surface-mount assembly with defined solder land geometry (2.30 mm × 4.30 mm footprint) and thermal path to PCB copper. Junction-to-ambient thermal resistance is 380 K/W in free air, limiting continuous power handling to 400 mW at Tamb ≤ 50 °C per derating curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 38.2 V to 39.8 V at IZ = 5 mA - ensures tight 39 V reference with ±2 % tolerance for precision feedback paths |
| Differential Resistance (rdif) | 80 Ω typical at IZ = 5 mA - determines load regulation error: ΔVZ ≈ 80 Ω × ΔIZ |
| Temperature Coefficient (SZ) | −2.5 mV/K at IZ = 5 mA - quantifies drift: −0.0975 V/°C over 39 °C ambient rise |
| Total Power Dissipation (Ptot) | 500 mW maximum at Tamb ≤ 50 °C - sets upper bound for steady-state heat generation in PCB layout |
| Non-repetitive Peak Power (PZSM) | 40 W for 100 µs square wave - defines transient overvoltage clamping capability without failure |
| Reverse Leakage (IR) | 50 nA max at VR = 0.7 × VZ(nom) - ensures minimal quiescent current in high-impedance bias networks |
| Forward Voltage (VF) | 0.9 V max at IF = 10 mA - relevant for forward-conduction protection or LED driver biasing |
Pinout & Package
Hermetically sealed glass SOD80C package: 3.3–3.7 mm length, 1.45–1.60 mm width, 0.3 mm height; cathode indicated by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; reverse-bias terminal where Zener breakdown occurs |
| 2 | Anode | Connected to ground or lower-potential rail; completes reverse-current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| ±2 % Zener voltage tolerance | Enables accurate voltage references without post-production trimming in industrial power supplies |
| Low differential resistance (80 Ω typ.) | Minimizes output voltage variation under load current changes up to ±10 mA |
| Hermetic glass SMD package | Provides long-term reliability in humid or chemically aggressive environments vs. plastic packages |
| 40 W non-repetitive surge rating | Clamps ESD transients and line surges without degradation in telecom interface protection |
| −2.5 mV/K temperature coefficient | Reduces thermal drift in temperature-sensitive instrumentation front-ends operating from −40 °C to +125 °C |
Applications
| Power Supply Feedback Regulation | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing output voltage in isolated flyback converters using optocoupler feedback. IC Role / Device Role / Timing Role: Zener diode provides precise 39 V reference to TL431 shunt regulator input, setting secondary-side feedback threshold. Use Value: ±2 % VZ tolerance ensures ±1.5 % output voltage accuracy across production batches without calibration. | Use Scenario: Protecting microcontroller I/O pins from 48 V DC field bus transients. IC Role / Device Role / Timing Role: Placed between I/O line and ground to clamp spikes exceeding 39 V before they reach sensitive CMOS inputs. Use Value: 40 W peak power rating absorbs 100 µs surges up to 1.0 A without parametric shift or failure. |
| Sensor Bias Voltage Reference | Current Source Setpoint |
Use Scenario: Providing stable excitation voltage to resistive temperature detectors (RTDs) in HVAC control modules. IC Role / Device Role / Timing Role: Supplies regulated 39 V to constant-current source driving 1 kΩ RTD bridge, minimizing self-heating error. Use Value: −2.5 mV/K tempco limits bias voltage drift to < ±0.1 V over −25 °C to +70 °C operating range. | Use Scenario: Setting reference voltage for LM334-based 100 µA current source in gas sensor analog front-end. IC Role / Device Role / Timing Role: Acts as precision voltage reference for op-amp comparator controlling MOSFET gate drive in current mirror circuit. Use Value: 80 Ω rdif ensures current setpoint remains within ±0.8 % despite ±8 mA load variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C39 | ±5 % tolerance, 90 Ω rdif, same SOD80C package | Lower cost but reduced regulation accuracy and higher dynamic impedance | Select when ±5 % output tolerance is acceptable and cost sensitivity outweighs precision needs |
| MMSZ5240B | ±5 % tolerance, 17 Ω rdif, SOD-123 package, 500 mW rating | Lower impedance improves load regulation but requires different PCB footprint and has higher leakage | Choose for tighter load regulation in space-constrained designs where SOD-123 layout is feasible |
Compared with BZV55-B39,115, BZX55C39 trades regulation accuracy for cost, while MMSZ5240B offers superior dynamic performance in a smaller package but demands revised thermal and layout design due to differing Rth(j-a) and footprint.
Availability
BZV55-B39,115 is available at Aetrix Electronics and suitable for industrial power supplies, telecom surge protection circuits, sensor bias networks, and analog signal conditioning requiring stable component supply with traceable lot history and full RoHS compliance.
Supply support for BZV55-B39,115 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 and industrial-grade components.
The BZV55 series belongs to Nexperia's precision Zener diode product line, engineered for stable voltage reference and clamping in cost-sensitive, high-reliability industrial and consumer power systems.
FAQ
What is the maximum continuous reverse current for reliable operation?
The BZV55-B39,115 supports up to 10.3 mA continuous reverse current at 39 V to stay within its 400 mW derated power limit at 50 °C ambient. Exceeding this draws >400 mW, risking thermal runaway unless PCB copper area reduces Rth(j-a) below 380 K/W.
How does the −2.5 mV/K temperature coefficient affect long-term stability?
This coefficient means VZ decreases by 2.5 mV per °C rise in junction temperature. At 100 °C junction temperature (75 °C above 25 °C test point), VZ drops by 187.5 mV - a −0.48 % shift from 39 V - which is fully specified and repeatable, not drift.
Can BZV55-B39,115 replace BZX55C39 in existing designs?
Yes, electrically and mechanically - both use SOD80C, share identical pinout and thermal specs. However, BZV55-B39,115's ±2 % tolerance improves regulation accuracy by 1.5 % absolute versus BZX55C39's ±5 %, requiring no layout change but offering tighter system-level voltage control.
What is the significance of the '115' suffix in the part number?
The '115' denotes the packing method: 10,000 units per reel in 4 mm pitch, 8 mm tape - per Nexperia's ordering code convention. It does not affect electrical characteristics or package dimensions, only logistics and reel configuration.
BZV55-B39,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- DO-213AC, MINI-MELF, SOD-80
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 39 V
- Tolerance:
- ±2%
- Power - Max:
- 500 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 ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LLDS; MiniMelf
BZV55-B39,115 FAQ
1.How can I place an order for BZV55-B39,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZV55-B39,115 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 BZV55-B39,115 reliable?
The price and inventory of BZV55-B39,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV55-B39,115 is usually 5 days.
3.What payment methods are accepted for BZV55-B39,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV55-B39,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZV55-B39,115?
BZV55-B39,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZV55-B39,115 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 BZV55-B39,115?
For technical support, including BZV55-B39,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV55-B39,115 requirements.
6.How does Aetrix verify that BZV55-B39,115 is sourced from the original manufacturer or authorized distributors?
All BZV55-B39,115 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 BZV55-B39,115 meets industry standards.
7.What is the process for return or replacement of BZV55-B39,115?
All BZV55-B39,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZV55-B39,115, 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 BZV55-B39,115 part is unused and in its original packaging.
Return procedure for BZV55-B39,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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