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Taiwan Semiconductor Corporation BZD27C51PWH
- Part No.:
- BZD27C51PWH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
BZD27C51PWH.pdf
- Description:
- DIODE ZENER 51V 1W SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:5,885
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Product details
Overview
BZD27C51PWH from Taiwan Semiconductor is a 1 W, 51 V ±5% tolerance AEC-Q101 qualified silicon Zener diode in SOD-123W package, designed for precision voltage regulation and transient overvoltage protection in automotive and industrial power rails. It delivers 51 V nominal Zener voltage at 10 mA test current, 70.8 V clamping voltage under 10/1000 µs surge, and exhibits low leakage (≤1.0 µA at VR = 39 V) with ±0.08%/°C temperature coefficient.
For engineers reviewing the BZD27C51PWH datasheet, BZD27C51PWH pinout, BZD27C51PWH application, or BZD27C51PWH equivalent, key selection criteria include its 1 W steady-state dissipation, 300 W non-repetitive pulse rating (100 µs), SOD-123W thermal resistance (RθJA = 85 °C/W), and AEC-Q101 qualification for under-hood automotive use.
Technical Context
The BZD27C51PWH operates as a single-die, cathode-banded Zener diode optimized for stable reverse-bias regulation. Its design integrates low-profile SOD-123W packaging with matte tin-plated leads compliant to J-STD-002 solderability and JESD201 Class 2 whisker resistance.
It supports two distinct surge ratings: 300 W for 100 µs square pulses and 150 W for 10/1000 µs waveforms (applicable to BZD27C11PWH–BZD27C100PWH variants). Junction temperature range spans −55 °C to +175 °C, enabling operation in harsh environments without derating below 80 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 48.5 V (min) to 53.6 V (max) at IZT = 10 mA - ensures tight 51 V regulation across production lot and temperature |
| Power Dissipation Ptot | 1.0 W at TA = 25 °C on 5 mm × 5 mm Cu pad - defines continuous thermal limit for PCB layout |
| Clamping Voltage VC | 70.8 V at IRSM (10/1000 µs) - specifies maximum transient voltage seen by protected circuit |
| Zener Impedance ZZT | 60 Ω max at IZT = 10 mA - determines regulation accuracy under dynamic load changes |
| Leakage Current IR | ≤1.0 µA at VR = 39 V - guarantees minimal standby power loss in high-impedance reference paths |
| Temp. Coefficient αVZ | +0.08 %/°C to +0.13 %/°C - enables predictable drift compensation in temperature-critical references |
| Junction Temp. Range | −55 °C to +175 °C - supports operation in engine control units and industrial motor drives |
Pinout & Package
Package: SOD-123W - low-profile surface-mount case with moisture sensitivity level 1 (J-STD-020), UL 94V-0 molding compound, and cathode band polarity indicator.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to system ground or lower-potential node; forms reference return path during regulation |
| Cathode | Zener breakdown terminal / regulated output node | Connected to voltage rail requiring stabilization; sinks current to maintain 51 V under overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Low leakage current | ≤1.0 µA at 39 V reverse bias - preserves battery life in always-on vehicle modules |
| High surge capability | 150 W peak pulse (10/1000 µs) - protects CAN/LIN transceivers and microcontroller I/O against ISO 7637-2 transients |
| Stable Zener impedance | 60 Ω max at 10 mA - minimizes output voltage variation during load step changes in feedback loops |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive - meets global environmental compliance requirements |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Analog Input Module |
|---|---|
|
Use Scenario: Stabilizing 5V reference rail for ADC sampling in engine knock sensor interface. IC Role / Device Role / Timing Role: Precision voltage reference and transient suppressor for front-end signal conditioning circuitry. Use Value: Maintains ≤±2% reference accuracy across −40°C to +125°C ambient while clamping ISO 7637-2 Pulse 5a surges to <71 V. |
Use Scenario: Protecting 24V DC input stage of analog input card from field-wiring induced transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp and secondary regulation element in multi-stage protection network. Use Value: Limits transient voltage to 70.8 V within 1 µs response time, preventing damage to downstream TVS arrays and linear regulators. |
| Telecom Power Supply Monitoring | Medical Infusion Pump Power Management |
|
Use Scenario: Providing stable 51 V bias for optocoupler feedback in isolated AC/DC adapter. IC Role / Device Role / Timing Role: Secondary-side Zener reference for voltage loop stability and fault detection threshold. Use Value: Delivers 51 V ±2.5% tolerance with <0.13%/°C drift, enabling accurate overvoltage lockout at 53.6 V. |
Use Scenario: Regulating auxiliary 5V rail powering microcontroller and motor driver logic in battery-operated infusion pump. IC Role / Device Role / Timing Role: Low-leakage voltage regulator ensuring <1 µA standby current draw during sleep mode. Use Value: Enables >72-hour battery runtime in standby by limiting reference circuit current to sub-microamp level. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BZT52-C51S | Same 51 V nominal, SOD-323 package, 500 mW rating, no AEC-Q101 qualification | Limited to commercial-temperature industrial use; unsuitable for under-hood automotive | Select when cost sensitivity outweighs automotive qualification and higher power handling |
| Vishay BZX84-C51-TP | 51 V nominal, SOT-23 package, 350 mW rating, AEC-Q101 qualified, higher ZZT (100 Ω) | Lower surge capability (100 W PRSM); requires larger board area for thermal relief | Prefer where SOT-23 footprint compatibility is mandatory and 1 W dissipation is not required |
Compared with BZD27C51PWH, the BZT52-C51S offers lower cost but lacks automotive qualification and thermal robustness, while the BZX84-C51-TP matches AEC-Q101 but sacrifices 3× steady-state power and surge margin - making BZD27C51PWH optimal for high-reliability 1 W regulation in constrained SOD-123W layouts.
Availability
BZD27C51PWH is available at Aetrix Electronics and suitable for automotive ECU designs, industrial PLC analog input protection, telecom power supply monitoring, and medical infusion pump power management requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZD27C51PWH 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 power devices, analog ICs, and protection components for automotive, industrial, and consumer markets.
The BZD27C series was developed to deliver AEC-Q101 qualified Zener diodes with enhanced surge robustness and thermal performance in compact SOD-123W packages for next-generation automotive power management and industrial control systems.
FAQ
What is the Zener voltage tolerance of BZD27C51PWH?
The BZD27C51PWH has a Zener voltage range of 48.5 V (minimum) to 53.6 V (maximum) at IZT = 10 mA, corresponding to a ±5% tolerance around the nominal 51 V rating. This tolerance is guaranteed across operating temperature and production lots per Taiwan Semiconductor's B2203 specification revision.
Does BZD27C51PWH meet automotive reliability standards?
Yes, the BZD27C51PWH is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and electrostatic discharge (ESD) per JS-001. This certification confirms suitability for automotive powertrain and body electronics applications per the official Taiwan Semiconductor datasheet Version B2203.
What is the maximum clamping voltage for BZD27C51PWH under surge conditions?
The BZD27C51PWH clamps to a maximum of 70.8 V under a 10/1000 µs waveform at rated surge current, as specified in the Electrical Specifications table of the Taiwan Semiconductor datasheet. This value is measured at IRSM, ensuring predictable overvoltage protection for downstream circuitry.
Can BZD27C51PWH be used in high-temperature environments?
Yes, the BZD27C51PWH supports junction temperatures from −55 °C to +175 °C and maintains full electrical specifications up to +150 °C ambient when mounted on a 5 mm × 5 mm copper pad. Its RθJA of 85 °C/W allows reliable operation in engine bay and industrial motor drive enclosures.
What is the leakage current specification for BZD27C51PWH?
The BZD27C51PWH exhibits a maximum reverse leakage current of 1.0 µA at VR = 39 V (80% of nominal Zener voltage), as confirmed in the Electrical Specifications table. This low leakage supports energy-efficient designs in battery-powered and always-on automotive modules.
BZD27C51PWH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123W
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 51 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 60 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 39 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 200 mA
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
BZD27C51PWH FAQ
1.How can I place an order for BZD27C51PWH through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27C51PWH 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 BZD27C51PWH reliable?
The price and inventory of BZD27C51PWH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZD27C51PWH is usually 5 days.
3.What payment methods are accepted for BZD27C51PWH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27C51PWH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27C51PWH?
BZD27C51PWH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27C51PWH 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 BZD27C51PWH?
For technical support, including BZD27C51PWH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27C51PWH requirements.
6.How does Aetrix verify that BZD27C51PWH is sourced from the original manufacturer or authorized distributors?
All BZD27C51PWH 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 BZD27C51PWH meets industry standards.
7.What is the process for return or replacement of BZD27C51PWH?
All BZD27C51PWH units undergo pre-shipment inspection (PSI). If there is an issue with BZD27C51PWH, 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 BZD27C51PWH part is unused and in its original packaging.
Return procedure for BZD27C51PWH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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