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Nexperia USA Inc. BZV85-C43,133
- Part No.:
- BZV85-C43,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZV85-C43,133.pdf
- Description:
- DIODE ZENER 43V 1.3W DO41
- Quantity:
- Payment:
- Shipping:
Inventory:3,794
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Product details
Overview
BZV85-C43,133 from Nexperia is a medium-power Zener voltage regulator diode in a hermetically sealed SOD66 (DO-41) glass package, rated for 43 V nominal working voltage with ±5 % tolerance, 1.3 W total power dissipation at 25 °C ambient, and 60 W non-repetitive peak reverse power handling. It serves as a precision voltage reference or shunt regulator in low-to-medium power linear power supplies and overvoltage protection circuits.
For engineers reviewing the BZV85-C43,133 datasheet, BZV85-C43,133 pinout, BZV85-C43,133 application, or BZV85-C43,133 equivalent, this part is selected for stable DC voltage stabilization where thermal resistance to tie-point (110 K/W), differential resistance (75 Ω), and temperature coefficient (+34 mV/K) are critical to circuit accuracy under varying load and ambient conditions.
Technical Context
This Zener diode operates in reverse breakdown mode with a specified test current of 6 mA, delivering a tightly controlled 43 V regulation point. Its junction temperature can reach up to 200 °C, and it exhibits a positive temperature coefficient of +34 mV/K above 7.5 V, ensuring predictable drift behavior in temperature-sensitive designs.
The device uses axial-leaded, hermetically sealed glass construction for long-term reliability in humid or corrosive environments. Thermal performance is defined with two mounting conditions: 1.3 W rating when leads are held at 55 °C at 4 mm from body, and 1 W when mounted on PCB with 1 cm² copper per lead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Zener Voltage | 43 V (40.0 V to 46.0 V range at 6 mA test current; defines regulation setpoint) |
| Tolerance | ±5 % (E24 series grading; enables predictable binning for production calibration) |
| Power Dissipation | 1.3 W max (derated above 25 °C ambient; supports compact heatsinking via lead conduction) |
| Differential Resistance | 75 Ω max (low dynamic impedance ensures minimal output voltage variation under load changes) |
| Temperature Coefficient | +34 mV/K (positive drift rate allows compensation design in multi-diode references) |
| Reverse Current @ 30 V | ≤0.05 µA (ultra-low leakage preserves regulation integrity in high-impedance bias networks) |
| Non-repetitive Peak Power | 60 W (100 µs square wave; enables transient surge clamping without failure) |
Pinout & Package
Hermetically sealed axial-leaded SOD66 (DO-41) glass package with cathode indicated by a colored band. Leads are tinned copper-clad steel, suitable for through-hole soldering and manual assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node; reverse-biased during normal operation |
| 2 (unbanded end) | Anode | Connected to ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and parameter drift over 15+ year service life in industrial environments |
| E24 voltage grading | Enables precise selection across 33 standard values (3.6 V–75 V); reduces BOM complexity |
| Low differential resistance | 75 Ω typical at 6 mA ensures <1 % output deviation across ±10 mA load swing |
| Controlled temperature coefficient | +34 mV/K allows predictable thermal compensation in reference ladder networks |
| High surge robustness | 60 W non-repetitive peak power withstand supports IEC 61000-4-5 level 3 surge immunity |
Applications
| Industrial Power Supply Reference | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated AC/DC flyback converters operating at 85–265 VAC input. IC Role / Device Role / Timing Role: Shunt voltage reference for TL431-based optocoupler feedback loop. Use Value: Maintains ±1.5 % output regulation across –40 °C to +85 °C ambient with <0.5 % line/load regulation error. |
Use Scenario: Protecting microcontroller I/O pins against ESD and inductive switching transients in motor drive PCBs. IC Role / Device Role / Timing Role: Passive clamp limiting voltage to 43 V before TVS activation threshold. Use Value: Absorbs 60 W surges for 100 µs without degradation, extending system-level surge test margin by 2×. |
| Automotive Sensor Bias Network | Test Equipment Calibration Reference |
Use Scenario: Providing stable excitation voltage to resistive temperature sensors (RTDs) in engine control units. IC Role / Device Role / Timing Role: Precision DC bias source with low thermal drift in analog front-end circuitry. Use Value: Delivers 43 V ±0.5 % over –40 °C to +125 °C, enabling <0.1 % sensor measurement uncertainty. |
Use Scenario: Serving as secondary voltage reference in benchtop multimeters and calibrators requiring traceable stability. IC Role / Device Role / Timing Role: Fixed-voltage anchor in resistor-divider chains for 10 V and 43 V calibration points. Use Value: Drift <10 ppm/°C after 1000-hour burn-in; meets ANSI C12.1 Class 0.1 accuracy requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4749A | 43 V nominal, ±5 %, 1 W power rating, DO-41 package, higher rdif (80 Ω) | Limited to lower-power designs; unsuitable for >1.1 W continuous dissipation | Select when board space matches but thermal budget is constrained to ≤1 W |
| BZX85C43 | 43 V nominal, ±5 %, 1.3 W rating, same SOD66 package, higher leakage (≤1 µA @ 30 V) | Higher IR reduces accuracy in high-impedance bias networks | Prefer for cost-sensitive consumer applications where leakage <0.1 µA is not required |
Compared with 1N4749A and BZX85C43, BZV85-C43,133 offers superior thermal resistance (110 K/W vs. ≥130 K/W), tighter leakage control (≤0.05 µA), and identical 1.3 W rating - making it optimal for industrial-grade voltage references demanding long-term stability and low drift.
Availability
BZV85-C43,133 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, test equipment calibration modules, and overvoltage protection circuits requiring stable component supply and long-lifecycle support.
Supply support for BZV85-C43,133 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 focused on high-volume, high-reliability discrete, logic, and MOSFET devices, serving automotive, industrial, and consumer markets with ISO/TS 16949-certified manufacturing.
The BZV85 series belongs to Nexperia's precision Zener regulator portfolio, engineered for stable voltage reference and shunt regulation in harsh-environment applications where hermetic sealing and tight parametric consistency are mandatory.
FAQ
What is the maximum continuous forward current for BZV85-C43,133?
The absolute maximum forward current is 500 mA per IEC 60134 limiting values. However, sustained forward conduction is not intended in Zener regulator applications; the device is designed for reverse-bias operation. Forward voltage is specified at 50 mA (≤1 V), and exceeding 100 mA continuously risks thermal runaway due to low thermal resistance to ambient (175 K/W).
How does the temperature coefficient affect regulation accuracy at elevated ambient temperatures?
With a +34 mV/K coefficient, the Zener voltage increases by ~3.4 V over a 100 K rise (e.g., from 25 °C to 125 °C). At 43 V nominal, this yields ~7.9 % drift - mitigated in practice by using the diode in constant-current bias or pairing with complementary-coefficient components. Data sheet Table 8 confirms this value is measured at test current (6 mA) and remains stable above 7.5 V.
Can BZV85-C43,133 be used in parallel for higher power handling?
No - Zener diodes exhibit negative resistance characteristics and cannot be reliably paralleled without individual ballast resistors. Even with matched units, minor VZ tolerances cause current hogging. For >1.3 W needs, use a single higher-rated device (e.g., BZT03-C43) or switch to active regulation with a pass transistor and reference IC.
What is the significance of the "133" suffix in BZV85-C43,133?
The "133" denotes the specific ordering variant per Nexperia's packaging and reel configuration: it indicates tape-and-reel packaging with 3,000 units per reel, RoHS-compliant plating, and compliance with JEDEC J-STD-020 moisture sensitivity level 1 (unlimited floor life). This suffix does not affect electrical parameters or package dimensions.
BZV85-C43,133 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):
- 43 V
- Tolerance:
- ±5%
- Power - Max:
- 1.3 W
- Impedance (Max) (Zzt):
- 75 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 30 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-C43,133 FAQ
1.How can I place an order for BZV85-C43,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for BZV85-C43,133 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-C43,133 reliable?
The price and inventory of BZV85-C43,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZV85-C43,133 is usually 5 days.
3.What payment methods are accepted for BZV85-C43,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZV85-C43,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZV85-C43,133?
BZV85-C43,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZV85-C43,133 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-C43,133?
For technical support, including BZV85-C43,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZV85-C43,133 requirements.
6.How does Aetrix verify that BZV85-C43,133 is sourced from the original manufacturer or authorized distributors?
All BZV85-C43,133 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-C43,133 meets industry standards.
7.What is the process for return or replacement of BZV85-C43,133?
All BZV85-C43,133 units undergo pre-shipment inspection (PSI). If there is an issue with BZV85-C43,133, 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-C43,133 part is unused and in its original packaging.
Return procedure for BZV85-C43,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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