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Nexperia USA Inc. BZV85-C51,133
- Part No.:
- BZV85-C51,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZV85-C51,133.pdf
- Description:
- DIODE ZENER 51V 1.3W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:3,643
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Product details
Overview
BZV85-C51,133 from Nexperia is a medium-power axial-leaded Zener diode in a hermetically sealed SOD66 (DO-41) glass package, rated for 51 V nominal working voltage with ±5 % tolerance, 1.3 W total power dissipation at Ttp = 55 °C, and 60 W non-repetitive peak reverse power. It delivers stable voltage regulation in low-to-medium current bias circuits, such as power supply reference rails and overvoltage protection clamps.
For engineers reviewing the BZV85-C51,133 datasheet, BZV85-C51,133 pinout, BZV85-C51,133 application, or BZV85-C51,133 equivalent, this page provides verified Zener voltage, thermal resistance, differential resistance, temperature coefficient, and PCB-mounting thermal derating data - all critical for precision analog reference design and transient suppression validation.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified test current of 36 mA, delivering a typical differential resistance of 125 Ω and a positive temperature coefficient of +0.5 mV/K at nominal regulation voltage. Its junction-to-tie-point thermal resistance is 110 K/W (lead length 4 mm), enabling predictable thermal performance under pulsed surge conditions.
The device complies with IEC 60134 absolute maximum ratings, supports non-repetitive peak reverse currents up to 36 A (100 µs square wave), and maintains stable regulation across −65 °C to +200 °C storage and operating junction temperatures - suitable for industrial-grade DC bias stabilization where long-term drift and thermal cycling are design constraints.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 48.0 V to 54.0 V at IZ = 36 mA - defines precise DC reference point for feedback networks |
| Differential Resistance rdif | 125 Ω max - determines output impedance and load regulation sensitivity |
| Temperature Coefficient SZ | +0.5 mV/K - enables predictable drift compensation in temperature-stable references |
| Total Power Dissipation Ptot | 1.3 W at Ttp = 55 °C (4 mm from body) - sets continuous DC bias limit on PCB with thermal relief |
| Non-repetitive Peak Power PZSM | 60 W (100 µs square wave) - supports transient overvoltage clamping without failure |
| Reverse Current IR | 0.05 µA max at VR = 38.3 V - ensures minimal leakage in high-impedance sensing paths |
| Forward Voltage VF | 1.0 V max at IF = 50 mA - relevant for polarity-check and ESD-diode-series configurations |
Pinout & Package
Hermetically sealed axial-leaded SOD66 (DO-41) glass package with 2 mm diameter body and 25.4 mm overall length; cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node; reverse-biased during Zener operation |
| 2 (non-banded end) | Anode | Connected to ground or lower-potential rail; establishes reference return path |
Key Features
| Feature | Design Value |
|---|---|
| E24-standardized voltage grading | 51 V nominal with ±5 % tolerance - simplifies BOM rationalization across 33-voltage family |
| Hermetic glass sealing | Guarantees long-term parameter stability and moisture immunity in harsh environments |
| Low leakage current | <0.05 µA at 75 % VZ - preserves accuracy in high-impedance voltage divider and sensor bias applications |
| Pulsed surge capability | 36 A peak reverse current (100 µs) - enables use as cost-effective transient voltage suppressor in low-energy interfaces |
| Thermal derating clarity | Explicit Rth(j-t) = 110 K/W and Rth(j-a) = 175 K/W values - supports accurate PCB copper area planning |
Applications
| Power Supply Reference | Overvoltage Clamp |
|---|---|
|
Use Scenario: Stabilizing feedback voltage in linear regulator error amplifiers or switching converter voltage sense networks. IC Role / Device Role / Timing Role: Provides fixed DC reference against which output voltage is compared. Use Value: 125 Ω differential resistance and +0.5 mV/K temperature coefficient enable <1 % total drift over −40 °C to +85 °C ambient. |
Use Scenario: Limiting transient spikes on 48 V DC bus lines in industrial control modules. IC Role / Device Role / Timing Role: Shunts excess energy to ground when voltage exceeds 51 V threshold. Use Value: 60 W non-repetitive peak power rating absorbs 100 µs surges up to 36 A without parametric shift. |
| Sensor Bias Network | Signal-Level Clamping |
|
Use Scenario: Generating stable excitation voltage for resistive bridge sensors in automotive pressure transducers. IC Role / Device Role / Timing Role: Supplies low-noise, low-drift bias to Wheatstone bridge top rail. Use Value: 0.05 µA max reverse leakage prevents loading errors in >1 MΩ bridge arms. |
Use Scenario: Protecting ADC input pins from ESD-induced overshoot in data acquisition front-ends. IC Role / Device Role / Timing Role: Acts as fast-acting clamp between signal line and ground. Use Value: Sub-10 ns turn-on delay (inherent to Zener structure) limits voltage excursion to ≤54 V during 2 kV HBM events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A | 51 V nominal, ±5 %, 1 W Ptot, DO-41 package, but higher rdif (17 Ω typ vs. 125 Ω max) | Lower dynamic impedance suits higher-current references; less suitable for ultra-low-leakage bias | Select for higher bias current (>10 mA) and tighter regulation under load variation |
| BZX85C51 | 51 V nominal, ±5 %, 1.3 W Ptot, but plastic DO-35 package - no hermetic seal, higher leakage (≤5 µA) | Cost-sensitive consumer designs where moisture resistance is non-critical | Select only when environmental reliability is secondary to unit cost and volume procurement |
Compared with 1N4733A and BZX85C51, BZV85-C51,133 offers superior long-term parameter stability via hermetic glass packaging and guaranteed low leakage, making it preferred for industrial and automotive reference circuits where calibration integrity over 10+ years is required.
Availability
BZV85-C51,133 is available at Aetrix Electronics and suitable for industrial power supply references, automotive sensor bias networks, industrial overvoltage clamps, and precision analog signal conditioning requiring stable component supply and traceable sourcing.
Supply support for BZV85-C51,133 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 specializing in high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified components and energy-efficient solutions.
BZV85-C51,133 belongs to the BZV85 series of hermetic Zener diodes designed specifically for stable voltage reference and transient suppression in industrial, automotive, and telecom infrastructure applications demanding long-term parameter consistency.
FAQ
What is the maximum continuous forward current for BZV85-C51,133?
The absolute maximum forward current is 500 mA per IEC 60134 limiting values. However, sustained forward conduction is not its intended operating mode; the device is optimized for reverse-bias Zener regulation. Forward voltage remains ≤1.0 V at 50 mA, but extended forward bias above 100 mA risks thermal runaway due to lack of thermal shutdown circuitry.
Can BZV85-C51,133 be used in parallel for higher power handling?
No - Zener diodes exhibit negative temperature coefficients below ~5 V and positive above, but even within the same batch, VZ matching tolerance (±5 %) causes current hogging. Parallel connection without individual ballast resistors leads to thermal instability and premature failure of the lowest-VZ unit. Use a single higher-rated device or external current-sharing design instead.
How does thermal derating work for PCB-mounted BZV85-C51,133?
At ambient temperature, full 1.3 W dissipation is allowed only if tie-point temperature at 4 mm from body is held at 55 °C. With standard 10 mm lead length and no copper pour, derating begins at 25 °C ambient: power must be reduced by 11.5 mW/°C above 25 °C, reaching zero at 150 °C ambient. Thermal relief pads significantly improve this curve.
Is the 51 V Zener voltage measured at DC or AC conditions?
The 48.0–54.0 V specification is measured under DC conditions at IZ = 36 mA, Tj = 25 °C. For AC-coupled applications, differential resistance (125 Ω max) dominates small-signal impedance, and dynamic impedance increases with frequency due to junction capacitance (≤0.5 pF at VR = 0 V). No AC voltage gain or phase response is characterized in the datasheet.
BZV85-C51,133 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 51 V
- Tolerance:
- ±5%
- Power - Max:
- 1.3 W
- Impedance (Max) (Zzt):
- 125 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 36 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 50 mA
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
BZV85-C51,133 FAQ
1.How can I place an order for BZV85-C51,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZV85-C51,133 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 BZV85-C51,133 reliable?
The price and inventory of BZV85-C51,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV85-C51,133 is usually 5 days.
3.What payment methods are accepted for BZV85-C51,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV85-C51,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZV85-C51,133?
BZV85-C51,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZV85-C51,133 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 BZV85-C51,133?
For technical support, including BZV85-C51,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV85-C51,133 requirements.
6.How does Aetrix verify that BZV85-C51,133 is sourced from the original manufacturer or authorized distributors?
All BZV85-C51,133 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 BZV85-C51,133 meets industry standards.
7.What is the process for return or replacement of BZV85-C51,133?
All BZV85-C51,133 units undergo pre-shipment inspection (PSI). If there is an issue with BZV85-C51,133, 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 BZV85-C51,133 part is unused and in its original packaging.
Return procedure for BZV85-C51,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZV85-C51,133 Tags
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