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Taiwan Semiconductor Corporation BZX85C47 R0G
- Part No.:
- BZX85C47 R0G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZX85C47 R0G.pdf
- Description:
- DIODE ZENER 47V 1.3W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:6,095
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Product details
Overview
BZX85C47 R0G from Taiwan Semiconductor is a 47 V ±5% Zener diode in DO-41 package, rated for 1.3 W power dissipation and operating up to +200°C junction temperature. It delivers stable voltage regulation in low-power DC/DC converters, lighting circuits, and adapter designs where precision reference and thermal robustness are required.
For engineers reviewing the BZX85C47 R0G datasheet, BZX85C47 R0G pinout, BZX85C47 R0G application, or BZX85C47 R0G equivalent, key selection criteria include nominal Zener voltage (47 V), test current (4 mA), dynamic impedance (90 Ω at IZT), leakage current (0.5 µA at 33 V), and hermetically sealed glass DO-41 packaging.
Technical Context
This discrete Zener diode operates in reverse breakdown to maintain a stable reference voltage across its terminals under controlled current conditions. Its 47 V nominal Zener voltage is specified at 4 mA test current with ±5% tolerance, and exhibits 90 Ω dynamic impedance at that condition.
The device features a single-die construction in a hermetically sealed DO-41 glass package with pure tin-plated leads compliant with J-STD-002 solderability. Junction temperature range spans −65°C to +200°C, supporting operation in harsh thermal environments without derating below 25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ Nominal | 47 V - precise voltage reference point at 4 mA test current |
| VZ Tolerance | ±5% - ensures 44.0–50.0 V regulation window under production conditions |
| PD | 1.3 W - maximum continuous power dissipation at 25°C ambient |
| ZZT @ IZT | 90 Ω - dynamic impedance defining voltage stability under small-signal AC variation |
| IR @ VR | 0.5 µA at 33 V - low leakage preserves accuracy in high-impedance bias networks |
| TJ Max | +200°C - enables reliable operation in enclosed or thermally constrained enclosures |
| RθJA | 130°C/W - thermal resistance from junction to ambient, critical for heatsinking decisions |
Pinout & Package
DO-41 axial-leaded glass package with cathode indicated by a painted band. Leads are pure tin-plated and solderable per J-STD-002. Total weight ≈242 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Reference ground node | Connected to lower-potential side of circuit; establishes reference return path |
| Cathode | Zener breakdown terminal / Voltage regulation output | Connected to regulated voltage rail; maintains 47 V relative to anode under reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| Hermetically sealed glass construction | Prevents moisture ingress and long-term parameter drift in humid or industrial environments |
| ±5% Zener voltage tolerance | Enables predictable regulation without post-production trimming in cost-sensitive applications |
| 1.3 W power rating | Supports higher-current shunt regulation than standard 400 mW Zeners, reducing need for external series resistors |
| −65°C to +200°C operating range | Eliminates derating requirements in automotive under-hood or industrial control cabinet deployments |
| RoHS-compliant green compound | Meets environmental compliance mandates without sacrificing thermal or electrical performance |
Applications
| Low-Voltage Stabilizers | On-Board DC/DC Converters |
|---|---|
Use Scenario: Providing stable bias voltage for op-amp references or microcontroller reset circuits in battery-powered IoT nodes. IC Role / Device Role / Timing Role: Voltage reference element establishing fixed threshold for comparator or supervisor IC activation. Use Value: 47 V rating allows direct use as secondary-side reference in isolated flyback feedback networks with optocoupler interface. | Use Scenario: Regulating auxiliary supply rails in telecom power modules where primary DC bus exceeds 48 V. IC Role / Device Role / Timing Role: Shunt regulator clamping feedback node voltage to stabilize output during transient load steps. Use Value: 90 Ω ZZT ensures minimal output deviation (<0.4 V) under 4 mA ±1 mA ripple current. |
| Lighting Applications | Adapters |
Use Scenario: Overvoltage protection and reference stabilization in LED driver constant-current loops with wide input range (e.g., 12–48 V). IC Role / Device Role / Timing Role: Clamping diode limiting gate drive voltage to protect MOSFETs during surge events. Use Value: 200°C max junction temperature supports operation near heat-generating LED arrays without thermal shutdown. | Use Scenario: Output voltage regulation in wall-mounted AC/DC adapters powering consumer electronics with variable line input. IC Role / Device Role / Timing Role: Precision Zener reference setting feedback divider ratio for TL431-based secondary-side regulation. Use Value: ±5% tolerance aligns with typical adapter output spec of ±5%, avoiding overdesign of feedback network. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4750A | Same 47 V nominal, ±5% tolerance, but rated 1 W (vs. 1.3 W); DO-41 package; higher ZZT = 100 Ω | Limited to lower-power shunt loads; less margin in thermally dense PCB layouts | Select when legacy design uses 1N4750A footprint and thermal load remains ≤1 W |
| BZX55C47 | Same 47 V, ±5%, DO-35 package (smaller, 0.5 W rating); ZZT = 100 Ω; lower thermal mass | Suitable only for signal-level references; not recommended for power regulation above 200 mW | Choose for space-constrained PCBs where power dissipation is <200 mW and size outweighs thermal capability |
Compared with 1N4750A and BZX55C47, BZX85C47 R0G provides 30% higher power handling and lower dynamic impedance in the same DO-41 footprint-enabling more robust shunt regulation in industrial adapters and DC/DC converters without layout change.
Availability
BZX85C47 R0G is available at Aetrix Electronics and suitable for low-voltage stabilizers, on-board DC/DC converters, and lighting applications requiring stable component supply with full traceability and RoHS compliance.
Supply support for BZX85C47 R0G 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, computing, and consumer markets since 1979.
The BZX85C series was developed to deliver high-reliability, glass-encapsulated Zener diodes with extended thermal range and tight voltage tolerance for mission-critical voltage reference and protection functions in power conversion systems.
FAQ
What is the Zener voltage tolerance for BZX85C47 R0G?
The BZX85C47 R0G has a nominal Zener voltage of 47 V with a standard tolerance of ±5%, meaning the actual measured voltage falls between 44.0 V and 50.0 V when tested at 4 mA DC current under pulse conditions. This tolerance is confirmed in the Electrical Specifications table of the official Taiwan Semiconductor datasheet (Version H2301), and applies across the full operating temperature range.
What is the maximum power dissipation of BZX85C47 R0G?
The BZX85C47 R0G is rated for 1.3 W maximum power dissipation at 25°C ambient temperature. Derating is required above 25°C per the thermal resistance specification (RθJA = 130°C/W). At 75°C ambient, the usable power drops to approximately 0.85 W. This rating is validated in the Absolute Maximum Ratings section of the Taiwan Semiconductor datasheet.
Is BZX85C47 R0G RoHS compliant?
Yes, BZX85C47 R0G is RoHS compliant and uses green compound encapsulation as stated in the Mechanical Data and Ordering Information sections of the Taiwan Semiconductor datasheet. The device meets EU Directive 2011/65/EU requirements, with lead content below 1000 ppm and no restricted substances above threshold limits.
What package type does BZX85C47 R0G use?
BZX85C47 R0G uses the DO-41 axial-leaded glass package, as confirmed in the Mechanical Data, Ordering Information, and Package Outline Dimensions sections of the Taiwan Semiconductor datasheet. Dimensions include body diameter 2.80 mm, length ≥25.40 mm, and lead diameter 0.86 mm, with cathode polarity marked by a painted band.
What is the Zener impedance of BZX85C47 R0G at its test current?
The Zener impedance (ZZT) of BZX85C47 R0G is 90 Ω, measured at the specified test current of 4 mA. This value reflects the dynamic resistance in the breakdown region and directly impacts voltage regulation stability under varying load or ripple conditions. It is documented in the Electrical Specifications table for part BZX85C47 in the official datasheet.
BZX85C47 R0G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 1.3 W
- Impedance (Max) (Zzt):
- 90 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 33 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 10 mA
- Operating Temperature:
- -65°C ~ 200°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZX85C47 R0G FAQ
1.How can I place an order for BZX85C47 R0G through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX85C47 R0G 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 BZX85C47 R0G reliable?
The price and inventory of BZX85C47 R0G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX85C47 R0G is usually 5 days.
3.What payment methods are accepted for BZX85C47 R0G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX85C47 R0G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX85C47 R0G?
BZX85C47 R0G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX85C47 R0G 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 BZX85C47 R0G?
For technical support, including BZX85C47 R0G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX85C47 R0G requirements.
6.How does Aetrix verify that BZX85C47 R0G is sourced from the original manufacturer or authorized distributors?
All BZX85C47 R0G 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 BZX85C47 R0G meets industry standards.
7.What is the process for return or replacement of BZX85C47 R0G?
All BZX85C47 R0G units undergo pre-shipment inspection (PSI). If there is an issue with BZX85C47 R0G, 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 BZX85C47 R0G part is unused and in its original packaging.
Return procedure for BZX85C47 R0G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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