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Taiwan Semiconductor Corporation BZY55B10 RBG
- Part No.:
- BZY55B10 RBG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- 0805 (2012 Metric)
- Datasheet:
-
BZY55B10 RBG.pdf
- Description:
- DIODE ZENER 10V 500MW 805
- Quantity:
- Payment:
- Shipping:
Inventory:3,379
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Product details
Overview
BZY55B10 RBG from Taiwan Semiconductor is a surface-mount Zener diode with nominal zener voltage 10.00 V, ±2% tolerance, 500 mW power dissipation, and 5 mA test current-designed for precision low-voltage stabilization in DC/DC converters and lighting control circuits.
For engineers reviewing the BZY55B10 RBG datasheet, BZY55B10 RBG pinout, BZY55B10 RBG application, or BZY55B10 RBG equivalent, key selection criteria include zener voltage accuracy (9.80–10.20 V), dynamic impedance (15 Ω at 5 mA), leakage current (≤0.1 µA at 7.5 V), and 0805 ceramic package compatibility with automated SMT assembly.
Technical Context
This Zener diode operates in reverse breakdown to maintain stable reference voltage under regulated current conditions. It features tight ±2% VZ tolerance, low dynamic impedance (15 Ω at IZT = 5 mA), and guaranteed leakage current ≤0.1 µA at 7.5 V.
Designed for surface-mount use in space-constrained applications, the BZY55B10 RBG uses a single-die 0805 ceramic package with cathode band polarity marking, JESD201 Class 1A whisker resistance, and UL 94HB-compliant molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ @ IZT | 9.80–10.20 V (±2% tolerance at 5 mA; enables precise voltage clamping in feedback loops) |
| IZT | 5 mA (standard test current; defines operating point for specified VZ and ZZT) |
| ZZT | 15 Ω (dynamic impedance at 5 mA; determines regulation sensitivity to load current changes) |
| PD | 500 mW (maximum steady-state power dissipation; sets upper limit for safe continuous operation) |
| IR @ VR | ≤0.1 µA at 7.5 V (reverse leakage; ensures minimal quiescent current in high-impedance reference nodes) |
| TJ Range | −55 °C to +150 °C (operating junction temperature; supports industrial and automotive ambient conditions) |
Pinout & Package
Package: 0805 (2.00 × 1.25 mm ceramic body) with cathode indicated by visible band; RoHS-compliant, moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to lower-potential side in reverse-bias configuration; forms reference ground return path |
| Cathode | Zener breakdown terminal / voltage clamp input | Connected to higher-potential rail; maintains regulated output voltage across load when reverse-biased |
Key Features
| Feature | Design Value |
|---|---|
| ±2% Zener voltage tolerance | Enables direct replacement in 10 V reference designs without recalibration or resistor trimming |
| 0805 ceramic surface-mount package | Supports high-density PCB layouts and reflow-compatible automated assembly with JEDEC-standard footprint |
| 15 Ω dynamic impedance at 5 mA | Delivers stable regulation under varying load currents typical in feedback networks of switching regulators |
| ≤0.1 µA leakage at 7.5 V | Minimizes error contribution in high-impedance voltage divider or op-amp reference circuits |
Applications
| DC/DC Converter Feedback | LED Driver Reference |
|---|---|
Use Scenario: Voltage sensing node in secondary-side feedback loop of isolated flyback or buck converter. IC Role / Device Role / Timing Role: Precision 10 V reference source for optocoupler or TL431-based error amplifier. Use Value: Tight ±2% VZ and low ZZT ensure <1% output voltage drift across line/load/temperature variations. | Use Scenario: Current-setting reference in constant-current LED driver IC bias network. IC Role / Device Role / Timing Role: Stable voltage reference for setting LED string current via sense resistor scaling. Use Value: Low leakage (<0.1 µA) prevents reference error accumulation in high-gain current-sense amplifiers. |
| Low-Voltage Adapter Regulation | Industrial Sensor Signal Conditioning |
Use Scenario: Overvoltage clamp and local regulation in wall adapter secondary-side circuitry. IC Role / Device Role / Timing Role: Shunt regulator protecting downstream LDOs or microcontrollers from transient overvoltage. Use Value: 500 mW power rating allows sustained clamping during 100 ms surges up to 12 V without thermal runaway. | Use Scenario: Biasing and offset compensation in analog front-end circuits for RTD or thermistor interfaces. IC Role / Device Role / Timing Role: Stable 10 V reference for ADC reference buffer or instrumentation amplifier gain-setting network. Use Value: −55 °C to +150 °C operating range ensures reliability in unheated industrial enclosures and outdoor sensor housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5240B-7-F | Same 10 V nominal VZ, but ±5% tolerance and 350 mW PD; SOT-23 package | Higher thermal resistance; unsuitable for high-power or high-temperature PCB locations | Select only if board space permits SOT-23 and ±5% tolerance is acceptable in system-level calibration |
| 1N4740A | Through-hole DO-41 package; 10 V ±5%, 1 W PD; no moisture sensitivity rating | Not compatible with automated SMT lines; requires wave soldering or hand assembly | Choose only for prototyping, legacy repair, or non-SMT production environments |
Compared with MMBZ5240B-7-F and 1N4740A, the BZY55B10 RBG provides tighter voltage tolerance, higher power density in 0805 format, and J-STD-020 Level 1 moisture handling-making it optimal for high-volume, thermally demanding SMT applications where reference stability is critical.
Availability
BZY55B10 RBG is available at Aetrix Electronics and suitable for DC/DC converter feedback, LED driver reference, and low-voltage adapter regulation requiring stable component supply across industrial and consumer production programs.
Supply support for BZY55B10 RBG 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 BZY55B series belongs to TSC's precision Zener diode product line, engineered specifically for surface-mount voltage reference and stabilization in compact power management circuits where accuracy, thermal stability, and SMT process compatibility are essential.
FAQ
What is the exact zener voltage range for BZY55B10 RBG?
The BZY55B10 RBG has a guaranteed zener voltage range of 9.80 V to 10.20 V at 5 mA test current and 25 °C ambient, reflecting its ±2% tolerance specification. This range is verified per Taiwan Semiconductor's D2301 datasheet revision and applies under pulse-test conditions (10 ms duration). The BZY55B10 RBG maintains this tolerance across its full operating temperature range of −55 °C to +150 °C.
Does BZY55B10 RBG support reflow soldering per J-STD-020?
Yes, the BZY55B10 RBG is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it can be subjected to unlimited floor life and standard lead-free reflow profiles without baking. Its 0805 ceramic package and UL 94HB-compliant molding compound are qualified for peak reflow temperatures up to 260 °C, making the BZY55B10 RBG fully compatible with high-volume SMT assembly processes.
What is the maximum reverse leakage current for BZY55B10 RBG?
The BZY55B10 RBG exhibits a maximum reverse leakage current of 0.1 µA when biased at 7.5 V, as specified in the Electrical Specifications table. This value is measured at 25 °C and remains valid across the full operating temperature range. The low leakage ensures minimal error injection in high-impedance reference paths, a key requirement for the BZY55B10 RBG in precision analog circuits.
Can BZY55B10 RBG replace BZY55C10 in existing designs?
No-the BZY55B10 RBG and BZY55C10 differ in voltage tolerance: B-series offers ±2%, while C-series is ±5%. Substituting BZY55B10 RBG for BZY55C10 improves reference accuracy but may require validation of downstream circuit margin, especially in feedback loops sensitive to VZ shift. The BZY55B10 RBG shares identical package, pinout, and thermal specs, so mechanical integration is seamless.
What is the thermal resistance from junction to ambient for BZY55B10 RBG?
The BZY55B10 RBG has a junction-to-ambient thermal resistance (RθJA) of 300 °C/W, measured on a standard JEDEC 2S2P test board. This value assumes natural convection and defines the temperature rise above ambient per milliwatt of dissipated power. At its full 500 mW rating, the BZY55B10 RBG junction may rise up to 150 °C above ambient-consistent with its 150 °C maximum junction temperature rating.
BZY55B10 RBG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 0805 (2012 Metric)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 10 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 7.5 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.5 V @ 10 mA
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 0805
BZY55B10 RBG FAQ
1.How can I place an order for BZY55B10 RBG through Aetrix?
Please submit a Request for Quotation (RFQ) for BZY55B10 RBG 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 BZY55B10 RBG reliable?
The price and inventory of BZY55B10 RBG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZY55B10 RBG is usually 5 days.
3.What payment methods are accepted for BZY55B10 RBG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZY55B10 RBG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZY55B10 RBG?
BZY55B10 RBG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZY55B10 RBG 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 BZY55B10 RBG?
For technical support, including BZY55B10 RBG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZY55B10 RBG requirements.
6.How does Aetrix verify that BZY55B10 RBG is sourced from the original manufacturer or authorized distributors?
All BZY55B10 RBG 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 BZY55B10 RBG meets industry standards.
7.What is the process for return or replacement of BZY55B10 RBG?
All BZY55B10 RBG units undergo pre-shipment inspection (PSI). If there is an issue with BZY55B10 RBG, 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 BZY55B10 RBG part is unused and in its original packaging.
Return procedure for BZY55B10 RBG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
BZY55B10 RBG Tags
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