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Nexperia USA Inc. BZV55-B33,115
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- Part No.:
- BZV55-B33,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
BZV55-B33,115.pdf
- Description:
- DIODE ZENER 33V 500MW LLDS
- Quantity:
- Payment:
- Shipping:
Inventory:5,976
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Product details
Overview
BZV55-B33,115 from Nexperia is a low-power Zener voltage regulator diode in a hermetically sealed glass SOD80C surface-mount package, rated for 33 V nominal regulation at 5 mA with ±2 % tolerance, 75 Ω typical differential resistance, and −2.4 mV/K temperature coefficient. It delivers stable reference voltage in low-current bias networks, power supply feedback paths, and overvoltage protection circuits.
For engineers reviewing the BZV55-B33,115 datasheet, BZV55-B33,115 pinout, BZV55-B33,115 application, or BZV55-B33,115 equivalent, this page provides verified electrical parameters, thermal behavior under transient surge (40 W, 100 µs), SOD80C footprint details, and validated alternatives for precision voltage reference design.
Technical Context
This device operates as a reverse-biased Zener diode, maintaining a stable 32.3–33.7 V breakdown voltage across its cathode-anode terminals when biased at IZ = 5 mA. Its low 75 Ω typical differential resistance ensures minimal output voltage variation under load current shifts.
Thermal performance is defined by Rth(j-a) = 380 K/W (free air) and Rth(j-sp) = 300 K/W (solder point), supporting operation up to +200 °C junction temperature. The −2.4 mV/K temperature coefficient indicates predictable, linear drift over temperature-critical for compensated reference designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 33 V at IZ = 5 mA - defines precise regulation point for feedback and clamping |
| Voltage Tolerance | ±2 % - enables tight reference accuracy without post-calibration |
| Differential Resistance (rdif) | 75 Ω typ. at IZ = 5 mA - limits output voltage shift to ≤0.375 V per 5 mA load change |
| Temperature Coefficient (SZ) | −2.4 mV/K - allows predictable compensation in wide-temperature industrial environments |
| Non-repetitive Peak Power (PZSM) | 40 W for 100 µs - supports transient overvoltage suppression in surge-prone inputs |
| Total Power Dissipation (Ptot) | 500 mW at Tamb ≤ 50 °C - sets maximum continuous DC bias capability |
| Reverse Leakage (IR) | 50 nA at VR = 23.1 V - ensures negligible current draw in high-impedance sensing nodes |
Pinout & Package
Hermetically sealed glass SOD80C package: 3.3–3.7 mm length, 1.45–1.60 mm width, 0.3 mm height; cathode marked by band; optimized for reflow and wave soldering per IPC-7351B.
| 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 bias path for regulation current |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic Glass SMD Construction | Ensures long-term stability and moisture resistance in harsh environments without conformal coating |
| ±2 % Tight Voltage Tolerance | Reduces need for external trimming in precision analog references and ADC/DAC bias networks |
| Low 75 Ω Differential Resistance | Maintains regulation accuracy under varying load conditions in feedback loops and sensor excitation |
| −2.4 mV/K Temperature Coefficient | Enables predictable thermal drift modeling for compensation in industrial temperature ranges (−40 to +125 °C) |
| 40 W Non-repetitive Surge Rating | Provides robustness against ESD and line transients without requiring additional TVS devices |
Applications
| Power Supply Feedback Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Used in the optocoupler feedback path of isolated DC-DC converters to regulate output voltage within ±1 %. IC Role / Device Role / Timing Role: Zener diode provides stable 33 V reference to TL431 shunt regulator input. Use Value: Enables accurate secondary-side regulation without primary-side sensing, reducing component count and improving safety isolation. | Use Scenario: Placed across microcontroller I/O pins to clamp fast-rising ESD events on industrial fieldbus lines. IC Role / Device Role / Timing Role: Acts as a passive voltage clamp limiting pin voltage to 33 V during 15 kV HBM transients. Use Value: Prevents latch-up and gate oxide damage while adding <1 ns response latency-no active circuitry required. |
| Sensor Excitation Bias | ADC Reference Stabilization |
Use Scenario: Supplies constant 33 V bias to resistive temperature detector (RTD) bridge arms in precision temperature measurement modules. IC Role / Device Role / Timing Role: Provides low-noise, thermally stable excitation voltage independent of supply rail fluctuations. Use Value: Reduces measurement error from supply ripple and ambient temperature drift, enabling <0.1 °C resolution. | Use Scenario: Buffers and stabilizes reference voltage for 16-bit SAR ADCs in data acquisition systems operating from unregulated 3.3 V/5 V rails. IC Role / Device Role / Timing Role: Zener-based reference buffer stage preceding op-amp follower driving ADC REF+ pin. Use Value: Suppresses reference noise and improves PSRR, achieving effective ENOB > 14.5 bits in noisy industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C33 (Vishay) | ±5 % tolerance, 80 Ω rdif, −2.5 mV/K SZ, same SOD80C package | Lower accuracy; higher differential resistance increases regulation error under load variation | Select when cost sensitivity outweighs precision requirements and thermal drift is acceptable |
| MMSZ5257B (ON Semiconductor) | ±5 % tolerance, 30 Ω rdif, +2.0 mV/K SZ, SOD-123 package | Opposite temperature coefficient sign; smaller package reduces board area but lowers surge rating (20 W) | Choose for space-constrained designs needing lower dynamic impedance, accepting positive TC trade-off |
Compared with BZV55-B33,115, BZX55C33 sacrifices accuracy and regulation stiffness for lower cost, while MMSZ5257B trades thermal drift direction and surge resilience for compact size and tighter dynamic regulation-each suited to distinct design priorities.
Availability
BZV55-B33,115 is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, and embedded system protection circuits requiring stable component supply and long-lifecycle availability.
Supply support for BZV55-B33,115 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 logic, discrete, and MOSFET solutions, with manufacturing rooted in process control and automotive-grade quality systems.
The BZV55 series belongs to Nexperia's precision Zener diode product line, engineered specifically for stable voltage reference and clamping in cost-sensitive industrial, consumer, and communications equipment where hermetic reliability and tight tolerances are essential.
FAQ
What is the maximum continuous forward current for BZV55-B33,115?
The absolute maximum forward current is 250 mA per datasheet Table 5. However, forward conduction is not its intended operating mode; it is designed for reverse-bias Zener regulation. Continuous forward bias above 10 mA risks thermal overstress due to low VF (~0.9 V) and limited power dissipation capacity.
Can BZV55-B33,115 be used in place of a 33 V TVS diode for surge protection?
No-it is not rated for repetitive surge events. While its 40 W non-repetitive peak power (100 µs) supports single transient clamping, it lacks the robust avalanche energy rating and low clamping voltage (VC) of dedicated TVS diodes. Use only for low-energy, infrequent overvoltage suppression-not line-level surge immunity.
How does the −2.4 mV/K temperature coefficient affect regulation accuracy over −40 °C to +125 °C?
Across that range, the Zener voltage shifts by approximately −387 mV (−2.4 mV/K × 165 K), resulting in a final VZ of ~32.61 V at +125 °C and ~33.39 V at −40 °C. This 780 mV total span must be accounted for in closed-loop systems where absolute voltage accuracy matters, such as precision ADC references.
Is the SOD80C package compatible with standard reflow profiles for lead-free assembly?
Yes-the device is qualified for Pb-free reflow per J-STD-020. Its glass body withstands peak temperatures up to 260 °C for ≤60 seconds. Recommended profile uses ramp-to-spike rate ≤3 °C/s, peak at 245–260 °C for 30–60 s, and cooling rate ≤6 °C/s to avoid thermal shock cracking.
BZV55-B33,115 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):
- 33 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 23.1 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-B33,115 FAQ
1.How can I place an order for BZV55-B33,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZV55-B33,115 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-B33,115 reliable?
The price and inventory of BZV55-B33,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV55-B33,115 is usually 5 days.
3.What payment methods are accepted for BZV55-B33,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV55-B33,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZV55-B33,115?
BZV55-B33,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZV55-B33,115 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-B33,115?
For technical support, including BZV55-B33,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV55-B33,115 requirements.
6.How does Aetrix verify that BZV55-B33,115 is sourced from the original manufacturer or authorized distributors?
All BZV55-B33,115 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-B33,115 meets industry standards.
7.What is the process for return or replacement of BZV55-B33,115?
All BZV55-B33,115 units undergo pre-shipment inspection (PSI). If there is an issue with BZV55-B33,115, 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-B33,115 part is unused and in its original packaging.
Return procedure for BZV55-B33,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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