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Nexperia USA Inc. BZV55-B43,115
- Part No.:
- BZV55-B43,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
BZV55-B43,115.pdf
- Description:
- DIODE ZENER 43V 500MW LLDS
- Quantity:
- Payment:
- Shipping:
Inventory:2,001
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Product details
Overview
BZV55-B43,115 from Nexperia is a ±2 % tolerance, 43 V nominal Zener voltage regulator diode in a hermetically sealed glass SOD80C surface-mount package. It delivers 5 mA regulation current with 85 Ω typical differential resistance at 25 °C, supports non-repetitive 40 W surge power (100 µs square wave), and operates across −65 °C to +200 °C junction temperature. It serves as a precision reference or overvoltage clamp in low-power analog supply rails.
For engineers reviewing the BZV55-B43,115 datasheet, BZV55-B43,115 pinout, BZV55-B43,115 application, or BZV55-B43,115 equivalent, this page provides verified electrical parameters, thermal behavior, SOD80C footprint details, and validated alternative Zeners for voltage reference design, power rail stabilization, and transient suppression in industrial control and sensor signal conditioning.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable DC voltage under varying load or input conditions. Its 43 V nominal working voltage is specified at IZ = 5 mA, with a temperature coefficient of +45 mV/K and 40 pF capacitance at 1 MHz and 0 V reverse bias.
The device exhibits low differential resistance (85 Ω typ. at 5 mA) and high surge robustness: 40 W non-repetitive peak reverse power dissipation with 100 µs pulse width, and 400 mW total power dissipation at Tamb ≤ 50 °C on ceramic substrate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 43 V at IZ = 5 mA - defines regulated output level for reference and clamping circuits |
| Tolerance | ±2 % - ensures tight voltage accuracy for precision analog applications |
| Differential Resistance | 85 Ω typical at IZ = 5 mA - determines regulation stiffness and load-induced voltage drift |
| Non-repetitive Peak Power | 40 W (100 µs square wave) - enables transient overvoltage absorption without failure |
| Total Power Dissipation | 400 mW at Tamb ≤ 50 °C - sets continuous thermal limit on ceramic substrate |
| Junction-to-Ambient Rth | 380 K/W in free air - informs natural convection cooling requirements |
| Reverse Leakage | 50 nA at VR = 29.7 V (0.7 × VZ(nom)) - defines off-state current in high-impedance bias networks |
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 marking band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; reverse-biased terminal during Zener operation |
| 2 | Anode | Connected to ground or lower-potential rail; completes reverse-bias path |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass SMD construction | Ensures long-term stability and moisture resistance in harsh environments |
| Low differential resistance | 85 Ω typ. improves regulation accuracy under dynamic load changes |
| Wide operating temperature range | −65 °C to +200 °C junction enables use in automotive under-hood and industrial systems |
| Two tolerance series | ±2 % (B-series) and ±5 % (C-series) support cost-performance trade-offs in volume production |
Applications
| Industrial Sensor Signal Conditioning | Microcontroller Power Rail Clamping |
|---|---|
Use Scenario: Stabilizing reference voltage for 12-bit ADC inputs in temperature and pressure transmitters. IC Role / Device Role / Timing Role: Zener voltage reference providing fixed 43 V bias to op-amp gain-setting network. Use Value: ±2 % tolerance and low 85 Ω rdif minimize offset drift across −40 °C to +85 °C ambient, ensuring <0.5 LSB measurement error. |
Use Scenario: Protecting 3.3 V microcontroller I/O pins from ESD and supply rail overshoot in factory automation PLC modules. IC Role / Device Role / Timing Role: Overvoltage clamp limiting transient excursions above 43 V on isolated auxiliary supply lines. Use Value: 40 W non-repetitive surge rating absorbs 100 µs transients without degradation, preserving system-level immunity per IEC 61000-4-2 Level 4. |
| Programmable Logic Controller (PLC) Analog Input Protection | DC-DC Converter Feedback Reference |
Use Scenario: Safeguarding 0–10 V analog input channels against field-wiring faults and induced surges. IC Role / Device Role / Timing Role: Primary shunt regulator absorbing fault energy before it reaches precision instrumentation amplifier. Use Value: Hermetic SOD80C package prevents parameter shift due to humidity exposure in unsealed cabinet installations. |
Use Scenario: Providing stable feedback reference for isolated flyback converter regulating 24 V output in industrial power supplies. IC Role / Device Role / Timing Role: Secondary-side voltage reference setting output regulation point via optocoupler feedback loop. Use Value: +45 mV/K temperature coefficient allows predictable tracking of output drift, simplifying compensation in wide-temperature designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C43 | ±5 % tolerance, 43 V nominal, same SOD80C package, higher rdif (100 Ω max) | Lower accuracy; suitable where cost outweighs regulation precision | Select when ±5 % voltage tolerance is acceptable and BOM cost reduction is prioritized |
| MMSZ43ET1G | ±5 % tolerance, 43 V nominal, SOD-123 package, 500 mW Ptot, 100 Ω rdif max | Larger thermal resistance (400 K/W) limits power handling in confined layouts | Choose only if SOD-123 footprint compatibility is required and derating to 300 mW is acceptable |
Compared with BZV55-B43,115, BZX55C43 trades tighter tolerance for lower unit cost, while MMSZ43ET1G sacrifices thermal performance and accuracy for broader package availability-making the BZV55-B43,115 optimal for high-stability, space-constrained industrial references.
Availability
BZV55-B43,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable logic controller (PLC) analog input protection, and isolated DC-DC converter feedback circuits requiring stable component supply and long-lifecycle continuity.
Supply support for BZV55-B43,115 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 delivering high-performance, reliable discrete, logic, and MOSFET devices with focus on efficiency, reliability, and miniaturization.
The BZV55 series belongs to Nexperia's precision Zener voltage regulator portfolio, engineered for stable reference and clamping in industrial, automotive, and consumer power management systems where accuracy and ruggedness are critical.
FAQ
What is the maximum continuous forward current for BZV55-B43,115?
The absolute maximum forward current is 250 mA per the datasheet limiting values table. However, sustained forward conduction is not its intended operating mode; the device is designed for reverse-bias Zener regulation. Forward voltage is specified at 10 mA (≤0.9 V), and prolonged forward bias above 100 mA risks thermal overstress due to low thermal resistance to ambient (380 K/W).
Can BZV55-B43,115 be used in parallel for higher power dissipation?
No-Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, but the BZV55-B43,115 has a +45 mV/K coefficient, causing current hogging if paralleled without individual ballast resistors. Even with balancing, mismatched rdif (85 Ω typ.) and VZ tolerance (±2 %) prevent uniform current sharing, risking thermal runaway and premature failure.
What is the recommended PCB pad layout for SOD80C reflow soldering?
The official Nexperia reflow footprint specifies two 0.90 mm × 2.30 mm solder lands spaced 1.70 mm center-to-center, with 4.30 mm overall land length and 4.55 mm occupied area width. Thermal relief is not required due to low power, but solder mask defined pads are advised to prevent bridging during 4 mm pitch tape-and-reel placement.
How does the 43 V Zener voltage change with temperature?
At IZ = 5 mA, the temperature coefficient is +45 mV/K, meaning VZ increases by approximately 45 mV per 1 K rise in junction temperature. Over −40 °C to +125 °C ambient (assuming 25 °C rise to junction), VZ shifts by roughly +6.8 V-verified in Figure 4 of the datasheet, which shows monotonic positive drift across the full working current range.
BZV55-B43,115 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):
- 43 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 150 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 30.1 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-B43,115 FAQ
1.How can I place an order for BZV55-B43,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZV55-B43,115 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-B43,115 reliable?
The price and inventory of BZV55-B43,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV55-B43,115 is usually 5 days.
3.What payment methods are accepted for BZV55-B43,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV55-B43,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZV55-B43,115?
BZV55-B43,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZV55-B43,115 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-B43,115?
For technical support, including BZV55-B43,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV55-B43,115 requirements.
6.How does Aetrix verify that BZV55-B43,115 is sourced from the original manufacturer or authorized distributors?
All BZV55-B43,115 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-B43,115 meets industry standards.
7.What is the process for return or replacement of BZV55-B43,115?
All BZV55-B43,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZV55-B43,115, 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-B43,115 part is unused and in its original packaging.
Return procedure for BZV55-B43,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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