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Nexperia USA Inc. BZV85-C51,113
- Part No.:
- BZV85-C51,113
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZV85-C51,113.pdf
- Description:
- DIODE ZENER 51V 1.3W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:14,736
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Product details
Overview
BZV85-C51,113 from Nexperia is a medium-power Zener voltage regulator 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 handling. It serves as a precision DC voltage reference or shunt regulator in low-to-medium power linear power supplies and overvoltage protection circuits.
For engineers reviewing the BZV85-C51,113 datasheet, BZV85-C51,113 pinout, BZV85-C51,113 application, or BZV85-C51,113 equivalent, this part is selected for stable 51 V regulation under transient surges, thermal design with PCB copper heatsinking, and compatibility with axial-leaded through-hole assembly in industrial control and instrumentation systems.
Technical Context
This Zener diode operates in reverse breakdown to maintain a stable 51 V reference across its terminals under controlled current conditions. Its differential resistance is 125 Ω at test current (Itest = 4 mA), and it exhibits a positive temperature coefficient of +40.8 mV/K at Itest, enabling predictable drift compensation in temperature-sensitive references.
Designed for mounting on PCBs with ≥1 cm² copper per lead, it achieves Rth(j-a) = 175 K/W (lead length 10 mm) and Rth(j-t) = 110 K/W (lead length 4 mm), supporting thermal management in compact board-level designs without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage (VZ) | 51 V (min 48 V, max 54 V at Itest = 4 mA - defines regulated output level) |
| Differential Resistance (rdif) | 125 Ω (at Itest = 4 mA - determines regulation stiffness against load current changes) |
| Temperature Coefficient (SZ) | +40.8 mV/K (at Itest = 4 mA - quantifies voltage drift per °C rise in junction temperature) |
| Total Power Dissipation (Ptot) | 1.3 W (at Ttp = 55 °C, 4 mm from body - sets maximum steady-state thermal load) |
| Non-repetitive Peak Reverse Power (PZSM) | 60 W (100 µs square wave - supports surge suppression in transient protection stages) |
| Reverse Current (IR) | 0.05 µA (at VR = 36.7 V - ensures minimal leakage below knee voltage) |
| Forward Voltage (VF) | 1 V (at IF = 50 mA - relevant for polarity-check or dual-use forward conduction paths) |
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 terminal during Zener operation |
| 2 (non-banded end) | Anode | Connected to ground or lower-potential rail; completes bias path for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Stable ±5 % voltage tolerance | Ensures predictable regulation across production lots without post-assembly trimming |
| 1.3 W continuous power rating | Supports direct shunt regulation in 5–10 mA bias applications without external heatsinking |
| 60 W surge capability (100 µs) | Enables use in transient voltage suppression for 51 V rail protection without additional TVS devices |
| Hermetic glass SOD66 package | Guarantees long-term parameter stability and moisture resistance in harsh environments |
| Positive temperature coefficient (+40.8 mV/K) | Allows series combination with negative-coefficient devices for temperature-compensated references |
Applications
| Industrial Power Supply Reference | Overvoltage Protection Circuit |
|---|---|
|
Use Scenario: Providing stable 51 V reference for feedback loop in isolated AC/DC converter secondary-side regulation. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise output voltage setpoint via optocoupler feedback network. Use Value: Maintains ±1.5 % output accuracy over -40 °C to +105 °C ambient due to known temperature coefficient and low rdif. |
Use Scenario: Clamping transient spikes on 48 V telecom distribution bus during hot-swap or lightning-induced surges. IC Role / Device Role / Timing Role: Passive shunt protector diverting excess energy to ground when bus exceeds 51 V threshold. Use Value: Absorbs 60 W for 100 µs without degradation, eliminating need for larger TVS arrays in space-constrained modules. |
| Test Equipment Voltage Calibration | Automotive ECU Sensor Biasing |
|
Use Scenario: Generating traceable 51 V calibration point in portable multimeter reference subsystems. IC Role / Device Role / Timing Role: Precision Zener element in buffered reference ladder with temperature-compensating resistor network. Use Value: Delivers <10 ppm/°C effective TC when paired with −40.8 mV/K compensation, meeting Class II metrology requirements. |
Use Scenario: Biasing high-voltage sensor interface circuitry (e.g., battery pack monitoring) in 48 V mild-hybrid vehicle ECUs. IC Role / Device Role / Timing Role: Stable voltage clamp protecting ADC input and isolator driver stages from supply transients. Use Value: Survives automotive load-dump pulses (ISO 7637-2 Pulse 5a) due to 200 °C max junction temperature rating and robust glass package. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5239B | 51 V nominal, ±5 %, but only 0.5 W Ptot, higher rdif (175 Ω), no specified PZSM | Limited to low-power references; unsuitable for surge clamping or >10 mA bias loads | Select only for space-constrained PCBs where thermal budget is ≤0.5 W and surge immunity is not required |
| BZX85C51 | 51 V nominal, ±5 %, 1.3 W Ptot, but plastic DO-35 package (lower reliability, higher leakage IR = 0.1 µA) | Higher humidity sensitivity and parameter drift over time in humid environments | Prefer for cost-sensitive consumer applications where hermeticity is not critical |
Compared with 1N5239B and BZX85C51, BZV85-C51,113 offers superior surge resilience (60 W vs none or unspecified), hermetic stability for long-life industrial use, and tighter thermal resistance control (Rth(j-t) = 110 K/W), making it optimal for mission-critical 51 V regulation where reliability and transient response are prioritized.
Availability
BZV85-C51,113 is available at Aetrix Electronics and suitable for industrial power supplies, telecom surge protection circuits, test equipment calibration subsystems, and automotive ECU sensor biasing requiring stable component supply and long-term parametric consistency.
Supply support for BZV85-C51,113 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 components with focus on efficiency, reliability, and miniaturization.
The BZV85 series belongs to Nexperia's precision Zener regulator portfolio, engineered for stable voltage reference and shunt protection in industrial, automotive, and instrumentation applications demanding hermetic reliability and defined surge performance.
FAQ
What is the recommended test current for BZV85-C51,113 to achieve nominal 51 V regulation?
The datasheet specifies a test current (Itest) of 4 mA for VZ measurement. At this current, the device delivers 51 V ±5 % with differential resistance of 125 Ω. Operating outside 1–10 mA may increase rdif or cause excessive self-heating, degrading regulation accuracy.
Can BZV85-C51,113 be used in parallel for higher power dissipation?
No - Zener diodes exhibit manufacturing spread in VZ and rdif, causing current imbalance. Parallel connection risks thermal runaway in one device. For >1.3 W needs, use a single higher-rated Zener or active regulation with a pass transistor.
How does the +40.8 mV/K temperature coefficient impact circuit design?
This positive coefficient means VZ increases ~2.1 V over a 50 °C junction rise. Designers compensate by pairing with negative-TC devices (e.g., forward-biased diodes) or using it intentionally in temperature-sensing bias networks where predictable drift is advantageous.
Is the SOD66 (DO-41) package compatible with standard through-hole reflow or wave soldering?
Yes - the hermetic glass SOD66 package is qualified for wave soldering with peak temperatures ≤260 °C and 10 s dwell time. Preheating to 150 °C minimizes thermal shock. Avoid localized hot-air rework exceeding 300 °C to prevent seal integrity loss.
BZV85-C51,113 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- 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-C51,113 FAQ
1.How can I place an order for BZV85-C51,113 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZV85-C51,113 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-C51,113 reliable?
The price and inventory of BZV85-C51,113 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV85-C51,113 is usually 5 days.
3.What payment methods are accepted for BZV85-C51,113?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV85-C51,113 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZV85-C51,113?
BZV85-C51,113 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZV85-C51,113 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-C51,113?
For technical support, including BZV85-C51,113 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV85-C51,113 requirements.
6.How does Aetrix verify that BZV85-C51,113 is sourced from the original manufacturer or authorized distributors?
All BZV85-C51,113 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-C51,113 meets industry standards.
7.What is the process for return or replacement of BZV85-C51,113?
All BZV85-C51,113 units undergo pre-shipment inspection (PSI). If there is an issue with BZV85-C51,113, 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-C51,113 part is unused and in its original packaging.
Return procedure for BZV85-C51,113:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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