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Taiwan Semiconductor Corporation BZT52C56-G RHG
- Part No.:
- BZT52C56-G RHG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SOD-123F
- Datasheet:
-
BZT52C56-G RHG.pdf
- Description:
- DIODE ZENER 56V 500MW SOD123F
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
BZT52C56-G RHG from Taiwan Semiconductor is a 56 V ±5% tolerance surface-mount Zener diode in SOD-123 package, rated for 350 mW power dissipation, with 200 Ω dynamic impedance at 2 mA test current and 0.25 µA leakage at 43 V reverse bias. It serves as a precision voltage reference or overvoltage clamp in low-power DC regulation circuits.
For engineers reviewing the BZT52C56-G RHG datasheet, BZT52C56-G RHG pinout, BZT52C56-G RHG application, or BZT52C56-G RHG equivalent, key selection criteria include nominal Zener voltage (56 V), tight 5% tolerance, SOD-123 footprint compatibility, thermal resistance (357 °C/W), and low leakage performance at rated reverse voltage.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or input conditions. Its 56 V nominal Zener voltage is specified at 2 mA test current (IZT), with dynamic impedance of 200 Ω and knee impedance of 1400 Ω at 0.25 mA.
The device features a junction temperature range of –55 °C to +150 °C, moisture sensitivity level 1 per J-STD-020, and RoHS-compliant, halogen-free construction. Polarity is indicated by a cathode band on the SOD-123 case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 53.2–58.8 V at IZT = 2 mA - defines regulated output voltage window under standard test condition |
| Power Dissipation (PD) | 350 mW - maximum continuous power handling at 25 °C ambient; derates linearly above 25 °C |
| Zener Impedance (ZZT) | 200 Ω at IZT = 2 mA - indicates voltage regulation stability under small-signal AC variation |
| Leakage Current (IR) | 0.1 µA at VR = 43 V - ensures minimal standby current in high-impedance bias networks |
| Junction Temperature (TJ) | –55 °C to +150 °C - supports operation in industrial and automotive under-hood environments |
| Forward Voltage (VF) | 0.9 V at IF = 10 mA - enables use as low-drop rectifier or ESD protection element in forward bias |
| Thermal Resistance (RθJA) | 357 °C/W - determines junction-to-ambient temperature rise under steady-state power dissipation |
Pinout & Package
Package: SOD-123 - surface-mount plastic case with matte tin-plated leads, polarity marked by cathode band, weight ≈10.55 mg, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse breakdown reference node | Connected to lower-potential side of regulated circuit; forms reference ground for Zener biasing |
| Cathode | Forward current exit / Zener voltage output node | Provides stabilized 56 V output when reverse-biased; marked by visible band on SOD-123 body |
Key Features
| Feature | Design Value |
|---|---|
| 5% Zener voltage tolerance | Ensures predictable regulation within ±2.8 V of 56 V nominal, critical for accurate reference design |
| SOD-123 surface-mount package | Enables high-density PCB layout with JEDEC-standard footprint and J-STD-002 solderability |
| Moisture sensitivity level 1 | Eliminates need for dry-packaging or bake-out prior to reflow, reducing manufacturing overhead |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 and global environmental directives without compromising electrical performance |
| Junction temperature range –55 °C to +150 °C | Supports reliable operation in extended-temperature industrial control and power supply applications |
Applications
| Overvoltage Protection in Sensor Signal Conditioning | Low-Power Voltage Reference for ADC Bias Networks |
|---|---|
Use Scenario: Clamps transient spikes on 4–20 mA current loop sensor outputs during ESD events or line surges. IC Role / Device Role / Timing Role: Zener clamping diode placed between signal line and ground, conducting only above 56 V threshold. Use Value: Prevents damage to downstream op-amps or microcontroller analog inputs while maintaining signal integrity below 56 V. |
Use Scenario: Provides stable 56 V reference for high-voltage ADC front-end scaling resistors in battery monitoring systems. IC Role / Device Role / Timing Role: Passive voltage reference element establishing known potential for resistor-divider ratio calibration. Use Value: Enables accurate measurement of 0–60 V battery strings with <±2.8 V absolute error due to 5% Zener tolerance. |
| DC Power Rail Clamp in Industrial PLC Modules | Reverse Polarity Protection Auxiliary Element |
Use Scenario: Limits 24 V DC supply rail excursions caused by inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Shunt regulator connected across rail and ground, absorbing excess energy during transients. Use Value: Maintains rail voltage within safe operating range for 3.3 V logic ICs using 350 mW power rating and 200 Ω ZZT. |
Use Scenario: Paired with series MOSFET to detect and block reverse-connected power supplies in field-replaceable modules. IC Role / Device Role / Timing Role: Cathode tied to input, anode to protected system; conducts only if polarity is inverted beyond 56 V threshold. Use Value: Adds fail-safe reverse-voltage detection without active circuitry, leveraging inherent Zener breakdown asymmetry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5256B-7-F (Diodes Inc.) | Same 56 V nominal, 5% tolerance, SOD-123 package; higher IZK = 0.25 mA, ZZK = 1500 Ω | Marginally higher knee impedance may reduce low-current regulation accuracy | Preferred where tighter ZZK spec is not required and Diodes Inc. supply chain is prioritized |
| SZBZX84-C56LT1G (ON Semiconductor) | 56 V nominal, 5% tolerance, SOT-23 package; PD = 300 mW, ZZT = 190 Ω at 5 mA | Different footprint requires PCB redesign; higher test current shifts regulation point | Consider only when SOT-23 layout is already standardized and 5 mA bias is available |
Compared with MMBZ5256B-7-F and SZBZX84-C56LT1G, the BZT52C56-G RHG offers optimal balance of SOD-123 compatibility, 2 mA test current alignment with legacy designs, and lowest leakage (0.1 µA) among 56 V Zeners in this form factor.
Availability
BZT52C56-G RHG is available at Aetrix Electronics and suitable for overvoltage protection, precision voltage reference, and DC rail clamping applications requiring stable component supply and full traceability.
Supply support for BZT52C56-G RHG 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 semiconductor manufacturer specializing in discrete devices, analog ICs, and power management solutions for industrial and consumer markets.
The BZT52C56-G RHG belongs to TSC's BZT52C series of general-purpose Zener diodes, designed specifically for cost-sensitive, high-volume voltage regulation and protection functions in space-constrained SMT applications.
FAQ
What is the Zener voltage tolerance of BZT52C56-G RHG?
The BZT52C56-G RHG has a ±5% Zener voltage tolerance, meaning its actual breakdown voltage falls between 53.2 V and 58.8 V when tested at 2 mA. This tolerance is guaranteed per the manufacturer's datasheet revision C2007 and applies across the full operating temperature range of –55 °C to +150 °C. The BZT52C56-G RHG achieves this specification using tightly controlled diffusion and metallization processes during wafer fabrication.
Is BZT52C56-G RHG compatible with lead-free reflow soldering?
Yes, the BZT52C56-G RHG is fully compatible with lead-free reflow soldering per J-STD-002. Its matte tin-plated leads meet solderability requirements, and its SOD-123 package is rated for moisture sensitivity level 1 per J-STD-020-meaning it can be stored indefinitely at ambient conditions without baking prior to assembly. The BZT52C56-G RHG also complies with RoHS and halogen-free standards (IEC 61249-2-21).
What is the maximum power dissipation of BZT52C56-G RHG at 75°C ambient?
At 75 °C ambient temperature, the BZT52C56-G RHG's maximum power dissipation is derated to approximately 245 mW. This is calculated using its 357 °C/W junction-to-ambient thermal resistance and 150 °C maximum junction temperature: PD(TA) = (TJMAX – TA) / RθJA = (150 – 75) / 357 ≈ 0.210 W. The BZT52C56-G RHG datasheet provides a linear derating curve confirming this value.
Does BZT52C56-G RHG have a specified temperature coefficient?
Yes, the BZT52C56-G RHG has a typical temperature coefficient of +52.2 mV/°C at 2 mA test current (IZTC). This positive coefficient means its Zener voltage increases by ~52.2 mV per degree Celsius rise in junction temperature. The value is measured per the manufacturer's test method in the BZT52C2V4-G–BZT52C75-G datasheet (Version C2007, Page 2), and is critical for temperature-stable reference designs.
Can BZT52C56-G RHG be used in forward-bias applications?
Yes, the BZT52C56-G RHG exhibits a forward voltage of 0.9 V at 10 mA forward current, making it usable as a low-voltage drop rectifier or ESD protection diode in forward conduction mode. However, its primary design intent is reverse-bias Zener regulation. The BZT52C56-G RHG's forward characteristics are fully specified and tested per JESD201 Class 1A whisker requirements and J-STD-002 solderability standards.
BZT52C56-G RHG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123F
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 56 V
- Tolerance:
- ±5%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 200 Ohms
- Current - Reverse Leakage @ Vr:
- 45 nA @ 39.2 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123F
BZT52C56-G RHG FAQ
1.How can I place an order for BZT52C56-G RHG through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C56-G RHG 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 BZT52C56-G RHG reliable?
The price and inventory of BZT52C56-G RHG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT52C56-G RHG is usually 5 days.
3.What payment methods are accepted for BZT52C56-G RHG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C56-G RHG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C56-G RHG?
BZT52C56-G RHG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C56-G RHG 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 BZT52C56-G RHG?
For technical support, including BZT52C56-G RHG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C56-G RHG requirements.
6.How does Aetrix verify that BZT52C56-G RHG is sourced from the original manufacturer or authorized distributors?
All BZT52C56-G RHG 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 BZT52C56-G RHG meets industry standards.
7.What is the process for return or replacement of BZT52C56-G RHG?
All BZT52C56-G RHG units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C56-G RHG, 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 BZT52C56-G RHG part is unused and in its original packaging.
Return procedure for BZT52C56-G RHG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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