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Vishay General Semiconductor - Diodes Division BZX85C10-TR
- Part No.:
- BZX85C10-TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
BZX85C10-TR.pdf
- Description:
- DIODE ZENER 10V 1.3W DO204AL
- Quantity:
- Payment:
- Shipping:
Inventory:5,531
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Product details
Overview
BZX85C10-TR from Vishay is a silicon planar power Zener diode designed for voltage stabilization and clipping circuits, with a nominal Zener voltage of 10 V (9.4–10.6 V), 1.3 W power dissipation, and DO-41 glass package. It delivers stable regulation in industrial power supplies, overvoltage protection circuits, and reference voltage generation where ±5 % tolerance and low dynamic resistance (< 7 Ω at 7.5 mA) are required.
For engineers reviewing the BZX85C10-TR datasheet, BZX85C10-TR pinout, BZX85C10-TR application, or BZX85C10-TR equivalent, key selection criteria include its 10 V Zener voltage range, 1.3 W thermal rating, DO-41 mechanical outline, temperature coefficient of +0.04 %/°C, and suitability for high-reliability DC rail clamping and precision biasing in analog front-ends.
Technical Context
The BZX85C10-TR operates as a two-terminal voltage reference device relying on reverse-biased Zener breakdown. Its junction temperature is rated to 175 °C, and thermal resistance junction-to-ambient is 130 °C/W under standard lead-mount conditions (10 mm from case).
It exhibits a positive temperature coefficient (+0.04 %/°C) near its nominal 10 V operating point, indicating increasing Zener voltage with rising temperature - a critical factor when used in temperature-sensitive references or compensating circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 9.4–10.6 V at IZT = 7.5 mA - defines stable regulation window for 10 V rail conditioning |
| Power Dissipation (Ptot) | 1.3 W - maximum continuous power at Tamb = 25 °C with leads held at ambient |
| Dynamic Resistance (rZT) | < 7 Ω at IZT = 7.5 mA - ensures minimal output impedance and tight regulation under load variation |
| Temperature Coefficient (αVZ) | +0.04 %/°C at IZ = IZT - quantifies drift rate; enables thermal error budgeting in precision designs |
| Reverse Leakage Current | < 0.5 µA at VR = 7.5 V - guarantees negligible standby current in high-impedance bias networks |
| Junction Temperature (Tj) | 175 °C - sets upper thermal limit for reliable long-term operation in enclosed environments |
| Package | DO-41 glass case - industry-standard axial leaded package with 310 mg mass and JEDEC-compliant dimensions |
Pinout & Package
DO-41 glass axial package with cathode identified by a band; total length 26 mm min., diameter 2.6 mm max.; leads extend ≥10 mm from case for thermal derating compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener reference ground node | Connected to circuit common or lower-potential rail; forms return path during reverse breakdown |
| Cathode | Zener voltage output terminal / regulated node | Provides stabilized 10 V output relative to anode; marked with band for polarity identification |
Key Features
| Feature | Design Value |
|---|---|
| Silicon planar construction | Ensures consistent Zener characteristics, low parameter spread, and high reliability across production lots |
| E24-standard Zener grading | Enables precise voltage selection within 10 V nominal family without custom binning or calibration |
| 1.3 W power rating | Supports robust transient suppression and sustained regulation in 12 V system rails and industrial SMPS feedback paths |
| Low rZT < 7 Ω | Minimizes output voltage deviation under varying load currents - critical for analog sensor biasing |
| Positive αVZ (+0.04 %/°C) | Allows predictable compensation when paired with negative-coefficient components (e.g., transistors) in temperature-stable references |
Applications
| Industrial Power Supply Regulation | Overvoltage Protection Circuit |
|---|---|
Use Scenario: Stabilizing 10 V reference in isolated auxiliary supply of programmable logic controller (PLC) power module. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage regulator and error amplifier reference node. Use Value: Maintains ±1 % output accuracy over -40 to +85 °C ambient due to predictable +0.04 %/°C drift and low rZT. | Use Scenario: Clamping transient spikes on 12 V CAN bus power line during load dump events. IC Role / Device Role / Timing Role: Two-terminal shunt protector diverting excess energy to ground before downstream LDO input. Use Value: Withstands 1.3 W peak pulse power and limits voltage to ≤10.6 V, protecting 12 V-rated transceivers. |
| Precision Analog Biasing | DC Rail Monitoring Reference |
Use Scenario: Providing stable 10 V bias for op-amp input stage in high-resolution data acquisition front-end. IC Role / Device Role / Timing Role: Passive voltage reference establishing common-mode level for differential signal conditioning. Use Value: Low 0.5 µA leakage at 7.5 V ensures <10 nA error current into 10 MΩ bias network, preserving offset stability. | Use Scenario: Feeding comparator input for brown-out detection on microcontroller 10 V internal rail. IC Role / Device Role / Timing Role: Fixed threshold generator defining valid operating voltage window. Use Value: Tight 9.4–10.6 V tolerance ensures detection activates only below 9.4 V, avoiding false resets during ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4740A-T | Same 10 V nominal, but ±5 % tolerance, 1 W power rating, DO-41 package, rZT ≈ 17 Ω | Lower power handling and higher dynamic resistance reduce suitability for high-current regulation | Select when cost sensitivity outweighs thermal margin or regulation tightness requirements |
| BZX55C10-TR | Same 10 V nominal, ±5 % tolerance, but 500 mW rating, DO-35 package, rZT ≈ 15 Ω | Not suitable for >500 mW continuous dissipation; smaller package limits heatsinking | Choose only for space-constrained low-power biasing where 1.3 W capability is unnecessary |
Compared with BZX85C10-TR, the 1N4740A-T offers lower cost but sacrifices 23 % power headroom and nearly 2.4× higher dynamic resistance; the BZX55C10-TR trades significant thermal capacity and regulation performance for footprint reduction - making BZX85C10-TR optimal for industrial-grade 10 V stabilization demanding robustness and stability.
Availability
BZX85C10-TR is available at Aetrix Electronics and suitable for industrial power supplies, overvoltage protection circuits, and precision analog biasing requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for BZX85C10-TR 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
Vishay Semiconductor GmbH is a global leader in discrete semiconductors and passive components, headquartered in Germany, with vertically integrated manufacturing and strict environmental compliance.
The BZX85-Series is engineered for high-power voltage regulation and transient clamping in harsh industrial and automotive environments, emphasizing thermal robustness, parameter consistency, and long-term reliability.
FAQ
What is the Zener voltage tolerance of BZX85C10-TR?
The BZX85C10-TR has a Zener voltage range of 9.4 V to 10.6 V at test current IZT = 7.5 mA, corresponding to a ±5 % tolerance per the E24 standard. This tolerance is confirmed in the Electrical Characteristics table of Vishay Document Number 85607, Rev. 1.7, and applies specifically to the "C" suffix variant - distinct from the tighter ±2 % "B" version (BZX85B10).
What is the maximum power dissipation of BZX85C10-TR and under what conditions?
The BZX85C10-TR has a maximum power dissipation (Ptot) of 1.3 W at Tamb = 25 °C, provided leads are maintained at ambient temperature at a distance of 10 mm from the case. Derating is required above 25 °C per the curve in Figure 5 of the datasheet, with thermal resistance junction-to-ambient (RthJA) specified as 130 °C/W under those same lead-mount conditions.
Does BZX85C10-TR have a positive or negative temperature coefficient?
The BZX85C10-TR exhibits a positive temperature coefficient of +0.04 %/°C at IZ = IZT, meaning its Zener voltage increases with rising junction temperature. This value is explicitly listed in the Electrical Characteristics table for the BZX85C10 row and is typical for Zener diodes in the 8–12 V range due to dominant avalanche breakdown contribution.
What is the package type and marking convention for BZX85C10-TR?
The BZX85C10-TR uses the DO-41 glass axial package per JEDEC standards, with cathode identified by a single painted band. Mechanical dimensions are defined in Figure 8 of the datasheet: 26 mm minimum length, 2.6 mm maximum diameter, and 0.86 mm maximum lead diameter. The "-TR" suffix denotes tape-and-reel packaging (5 k per 13″ reel).
What is the dynamic resistance of BZX85C10-TR and why does it matter?
The dynamic resistance (rZT) of BZX85C10-TR is less than 7 Ω at IZT = 7.5 mA, measured at 1 kHz. This low value directly determines regulation quality: it limits output voltage change (ΔVZ = rZT × ΔIZ) under varying load or ripple current, making BZX85C10-TR suitable for applications requiring stable references in noisy or dynamically loaded circuits.
BZX85C10-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- BZX85
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 10 V
- Tolerance:
- ±5%
- Power - Max:
- 1.3 W
- Impedance (Max) (Zzt):
- 7 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 7.5 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -55°C ~ 175°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AL (DO-41)
BZX85C10-TR FAQ
1.How can I place an order for BZX85C10-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZX85C10-TR 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 BZX85C10-TR reliable?
The price and inventory of BZX85C10-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZX85C10-TR is usually 5 days.
3.What payment methods are accepted for BZX85C10-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZX85C10-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZX85C10-TR?
BZX85C10-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZX85C10-TR 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 BZX85C10-TR?
For technical support, including BZX85C10-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZX85C10-TR requirements.
6.How does Aetrix verify that BZX85C10-TR is sourced from the original manufacturer or authorized distributors?
All BZX85C10-TR 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 BZX85C10-TR meets industry standards.
7.What is the process for return or replacement of BZX85C10-TR?
All BZX85C10-TR units undergo pre-shipment inspection (PSI). If there is an issue with BZX85C10-TR, 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 BZX85C10-TR part is unused and in its original packaging.
Return procedure for BZX85C10-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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