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Taiwan Semiconductor Corporation BZT52C12-G RHG
- Part No.:
- BZT52C12-G RHG
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SOD-123
- Datasheet:
-
BZT52C12-G RHG.pdf
- Description:
- DIODE ZENER 12V 350MW SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:5,915
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Product details
Overview
BZT52C12-G RHG from Taiwan Semiconductor is a 12 V ±5% tolerance surface-mount Zener diode in SOD-123 package, rated for 350 mW power dissipation, with 25 Ω typical zener impedance at 5 mA test current and 0.1 µA leakage current at 8.0 V reverse bias. It serves as a precision voltage reference or overvoltage clamp in low-power regulation circuits.
For engineers reviewing the BZT52C12-G RHG datasheet, BZT52C12-G RHG pinout, BZT52C12-G RHG application, or BZT52C12-G RHG equivalent, key selection criteria include its 12 V nominal zener voltage, SOD-123 footprint compatibility, 150 °C maximum junction temperature, and RoHS/halogen-free compliance for industrial and consumer PCB designs.
Technical Context
The BZT52C12-G RHG operates as a single-die, cathode-banded Zener diode optimized for stable reverse-breakdown regulation at 12 V. Its electrical behavior is defined by a 5 mA zener test current (IZT), 25 Ω dynamic impedance (ZZT), and 0.1 µA leakage (IR) at VR = 8.0 V - all specified at TA = 25 °C.
Thermally, it features a junction-to-ambient thermal resistance of 357 °C/W and supports operation across –55 °C to +150 °C junction temperature range. The device meets JESD201 Class 1A whisker resistance and J-STD-020 Moisture Sensitivity Level 1 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.4–12.7 V @ IZT = 5 mA - defines tight 5% tolerance band for accurate voltage clamping |
| Power Dissipation (PD) | 350 mW - sets maximum continuous power handling in SOD-123 package without derating |
| Zener Impedance (ZZT) | 25 Ω @ IZT = 5 mA - determines regulation stability under load transients |
| Leakage Current (IR) | 0.1 µA @ VR = 8.0 V - ensures minimal standby current in high-impedance bias networks |
| Junction Temperature (TJ) | –55 °C to +150 °C - enables deployment in extended-temperature industrial environments |
| Forward Voltage (VF) | 0.9 V @ IF = 10 mA - confirms standard silicon diode conduction for polarity protection use cases |
Pinout & Package
Package: SOD-123 - surface-mount plastic case with cathode band marking, 10.55 mg weight, UL 94V-0 rated molding compound, matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener breakdown reference node | Connected to lower-potential side in regulation or clamp configuration |
| Cathode | Zener breakdown terminal / voltage reference output | Marked by band; supplies regulated 12 V when reverse-biased above VZ |
Key Features
| Feature | Design Value |
|---|---|
| 5% Zener voltage tolerance | Ensures predictable clamping within ±0.6 V of 12 V nominal for reliable circuit protection |
| SOD-123 surface-mount package | Enables automated placement and reflow compatibility with standard 0.95 mm pitch PCB footprints |
| J-STD-020 Level 1 moisture sensitivity | Eliminates bake requirements prior to assembly - supports immediate production use |
| RoHS and halogen-free compliance | Meets IEC 61249-2-21 and global environmental directives for commercial and industrial shipments |
Applications
| Overvoltage Protection in Sensor Interfaces | Low-Power Voltage Reference for ADC Biasing |
|---|---|
Use Scenario: Protects analog sensor outputs (e.g., thermistor bridges, RTD front-ends) from ESD or supply rail overshoot. IC Role / Device Role / Timing Role: Zener clamp placed between signal line and ground, conducting only during transient overvoltage events. Use Value: Limits voltage to ≤12.7 V with <0.1 µA leakage at 8 V, preserving signal integrity and preventing op-amp input damage. | Use Scenario: Provides stable 12 V reference for biasing precision ADC reference dividers or op-amp gain-setting networks. IC Role / Device Role / Timing Role: Reverse-biased Zener operating at 5 mA, delivering low-impedance DC reference point. Use Value: 25 Ω ZZT and 5% VZ tolerance ensure <±0.3 V drift across production units and temperature, improving measurement repeatability. |
| Power Supply Rail Clamp in IoT End Nodes | Reverse Polarity Protection Auxiliary Clamp |
Use Scenario: Clamps 12 V LDO output during load dump or hot-swap events in battery-powered gateways. IC Role / Device Role / Timing Role: Shunt regulator absorbing transient energy into ground path during overvoltage excursions. Use Value: 350 mW PD rating and 150 °C TJ max allow sustained clamping without thermal runaway in compact enclosures. | Use Scenario: Supplements primary reverse polarity protection by clamping reverse-bias leakage in series PMOS circuits. IC Role / Device Role / Timing Role: Anode tied to input rail, cathode to protected circuit - conducts only if reverse voltage exceeds 12 V. Use Value: 0.1 µA IR at 8 V ensures negligible quiescent current penalty while adding fail-safe voltage ceiling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5242B-7-F | 12 V nominal, ±5%, 350 mW, SOT-23 package, 30 Ω ZZT @ 20 mA | Higher test current (20 mA vs. 5 mA); slightly higher thermal resistance due to smaller die area | Preferred where board space allows SOT-23 and higher test-current regulation is acceptable |
| 1N4742A | 12 V nominal, ±5%, 1 W axial-leaded, 9 Ω ZZT @ 20 mA, TO-204AA package | Higher power rating but through-hole mounting; incompatible with automated SMT lines | Used in prototyping or legacy through-hole designs requiring higher surge capability |
Compared with MMBZ5242B-7-F and 1N4742A, the BZT52C12-G RHG offers optimal balance of SMT compatibility, tight 5 mA regulation point, and industry-standard SOD-123 footprint - making it ideal for space-constrained, high-volume consumer and industrial PCBs where lead-free reflow and moisture resilience are mandatory.
Availability
BZT52C12-G RHG is available at Aetrix Electronics and suitable for overvoltage protection, low-power voltage reference, and reverse polarity auxiliary clamp applications requiring stable component supply and full RoHS/halogen-free compliance.
Supply support for BZT52C12-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, automotive, and consumer markets.
The BZT52C series is part of TSC's precision Zener diode portfolio designed specifically for surface-mount voltage regulation and protection in space-constrained, high-reliability applications.
FAQ
What is the exact zener voltage range for BZT52C12-G RHG?
The BZT52C12-G RHG has a guaranteed zener voltage range of 11.4 V to 12.7 V at 5 mA test current (IZT), reflecting its ±5% tolerance specification. This range is validated per Taiwan Semiconductor's C2007 datasheet revision and applies under standard ambient conditions (TA = 25 °C). The BZT52C12-G RHG maintains this tolerance across its qualified operating temperature span.
Is BZT52C12-G RHG compatible with lead-free reflow soldering processes?
Yes, the BZT52C12-G RHG is fully compatible with lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 solderability requirements, and its SOD-123 package is rated for Moisture Sensitivity Level 1 per J-STD-020 - meaning no baking is required prior to assembly. The BZT52C12-G RHG withstands peak reflow temperatures up to 260 °C per JEDEC standards.
What is the maximum reverse leakage current for BZT52C12-G RHG?
The maximum reverse leakage current for BZT52C12-G RHG is 0.1 µA at a reverse voltage (VR) of 8.0 V, as specified in the Electrical Specifications table. This value is measured at TA = 25 °C and reflects the device's ability to maintain high-impedance blocking behavior below its zener knee - critical for low-power bias networks. The BZT52C12-G RHG exhibits consistent leakage performance across its –55 °C to +150 °C junction temperature range.
Does BZT52C12-G RHG have halogen-free certification?
Yes, the BZT52C12-G RHG is certified halogen-free in accordance with IEC 61249-2-21. This compliance is explicitly stated in the product documentation and verified through material composition analysis. The BZT52C12-G RHG contains no bromine, chlorine, fluorine, iodine, or astatine above threshold limits, supporting environmentally responsible manufacturing and end-of-life processing.
What is the thermal resistance (RθJA) of BZT52C12-G RHG?
The junction-to-ambient thermal resistance (RθJA) of BZT52C12-G RHG is 357 °C/W, measured on a standard FR-4 PCB with minimum copper pad area per JEDEC 51-3 guidelines. This value defines the steady-state temperature rise above ambient per watt of dissipated power. For reliable operation, the BZT52C12-G RHG must be operated within its 350 mW power limit and 150 °C maximum junction temperature - both validated under this thermal condition.
BZT52C12-G RHG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±5%
- Power - Max:
- 350 mW
- Impedance (Max) (Zzt):
- 25 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
BZT52C12-G RHG FAQ
1.How can I place an order for BZT52C12-G RHG through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT52C12-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 BZT52C12-G RHG reliable?
The price and inventory of BZT52C12-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 BZT52C12-G RHG is usually 5 days.
3.What payment methods are accepted for BZT52C12-G RHG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT52C12-G RHG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT52C12-G RHG?
BZT52C12-G RHG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT52C12-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 BZT52C12-G RHG?
For technical support, including BZT52C12-G RHG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT52C12-G RHG requirements.
6.How does Aetrix verify that BZT52C12-G RHG is sourced from the original manufacturer or authorized distributors?
All BZT52C12-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 BZT52C12-G RHG meets industry standards.
7.What is the process for return or replacement of BZT52C12-G RHG?
All BZT52C12-G RHG units undergo pre-shipment inspection (PSI). If there is an issue with BZT52C12-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 BZT52C12-G RHG part is unused and in its original packaging.
Return procedure for BZT52C12-G RHG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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