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Taiwan Semiconductor Corporation BZD27C47PW
- Part No.:
- BZD27C47PW
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
BZD27C47PW.pdf
- Description:
- DIODE ZENER 47V 1W SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:7,532
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Product details
Overview
BZD27C47PW from Taiwan Semiconductor is a 1 W, 47 V ±5% zener diode in SOD-123W package, designed for precision voltage regulation and transient overvoltage protection in power supply rails and reference circuits. It delivers 44.7–49.4 V zener voltage at 10 mA test current, 65.5 V clamping voltage under 10/1000 µs surge, and exhibits low leakage (≤2.3 µA at 36 V) with ±0.08%/°C temperature coefficient.
For engineers reviewing the BZD27C47PW datasheet, BZD27C47PW pinout, BZD27C47PW application, or BZD27C47PW equivalent, key selection criteria include its 100 W non-repetitive peak pulse power rating (10/1000 µs), 1500 Ω dynamic impedance at 10 mA, SOD-123W thermal performance (RθJA = 85 °C/W), and RoHS/halogen-free compliance for industrial-grade reliability.
Technical Context
The BZD27C47PW operates as a single-die silicon zener diode optimized for stable reverse-biased breakdown in DC voltage reference and surge suppression roles. Its design integrates low-profile SOD-123W packaging with matte tin-plated leads compliant to J-STD-002 solderability and JESD 201 Class 2 whisker resistance.
It supports two distinct surge ratings: 300 W for 100 µs square pulses and 100 W for 10/1000 µs waveforms (per BZD27C110PW–BZD27C220PW group), with junction temperature range of –55 °C to +175 °C and moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage VZ | 44.7–49.4 V at IZT = 10 mA - defines stable regulation window for 47 V nominal rail |
| Power dissipation Ptot | 1.0 W at TA = 25 °C - sets continuous DC power limit on standard PCB pad |
| Clamping voltage VC | 65.5 V at IRSM (10/1000 µs) - determines maximum transient voltage seen by protected circuit |
| Zener impedance ZZT | 45 Ω at IZT = 10 mA - indicates regulation stiffness under load variation |
| Leakage current IR | ≤2.3 µA at VR = 36 V - ensures minimal standby power loss in high-impedance references |
| Temp. coeff. αVZ | +0.08 to +0.13 %/°C - quantifies drift magnitude across operating temperature range |
Pinout & Package
Package: SOD-123W - low-profile surface-mount case with cathode band marking, UL 94V-0 molding compound, 0.016 g mass, and polarity indicated by visible band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / low-side connection | Connected to ground or lower-potential node during zener operation |
| Cathode | Zener breakdown terminal / high-side connection | Connected to regulated voltage rail; cathode band identifies this terminal physically |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD-123W package | Enables compact placement in space-constrained power management layouts |
| 100 W 10/1000 µs surge rating | Provides robust transient immunity for industrial input stage protection |
| Moisture sensitivity level 1 | Eliminates bake requirements before reflow, reducing assembly cost and risk |
| RoHS and halogen-free compliance | Meets IPC/JEDEC environmental standards for global market deployment |
Applications
| Industrial Power Supply Regulation | Automotive ECU Reference Voltage |
|---|---|
Use Scenario: Stabilizing 48 V intermediate bus in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Zener diode providing precise 47 V reference for feedback loop of isolated DC-DC converter. Use Value: Maintains ±1.5% output accuracy over –40 °C to +85 °C ambient via low tempco and tight VZ tolerance. | Use Scenario: Generating stable bias voltage for analog sensor interface in engine control unit. IC Role / Device Role / Timing Role: Voltage reference source for ADC reference divider network. Use Value: Delivers <2.3 µA leakage at 36 V, minimizing error contribution in high-impedance reference paths. |
| Telecom Surge Protection | Consumer Device Overvoltage Clamp |
Use Scenario: Protecting Ethernet PHY interface against lightning-induced surges on 48 V PoE lines. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping line-to-ground spikes. Use Value: Limits peak voltage to 65.5 V during 10/1000 µs transients, within safe margin of downstream IC ratings. | Use Scenario: Safeguarding USB-C PD negotiation circuitry from adapter overvoltage faults. IC Role / Device Role / Timing Role: Secondary clamp after primary TVS, absorbing residual energy. Use Value: Handles 100 W surge without degradation, verified per IEC 61000-4-5 Level 3 compliance testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BZT52C47S | Same 47 V nominal, SOD-323 package, 500 mW rating, higher ZZT (70 Ω) | Limited to lower-power references; unsuitable for 100 W surge handling | Select when board space is critical and surge energy is <10 W |
| Vishay PLZ47 | 47 V nominal, DO-219AB package, 1 W rating, 100 W 10/1000 µs rating, ZZT = 40 Ω | Identical surge capability but larger footprint and different thermal resistance (RθJA = 125 °C/W) | Select when higher mechanical robustness is required and SOD-123W footprint is not constrained |
Compared with BZT52C47S and PLZ47, the BZD27C47PW uniquely balances 1 W continuous power, 100 W surge capability, and SOD-123W compactness-making it optimal for industrial 48 V systems where thermal efficiency and PCB area are jointly constrained.
Availability
BZD27C47PW is available at Aetrix Electronics and suitable for industrial power supply regulation, automotive ECU reference voltage generation, and telecom surge protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZD27C47PW 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, including zener diodes, TVS, MOSFETs, and rectifiers, with ISO 9001 and IATF 16949 certification.
The BZD27C series is engineered for high-reliability voltage regulation and transient suppression in harsh-environment applications, emphasizing thermal stability, surge resilience, and process consistency across wide voltage ranges.
FAQ
What is the zener voltage tolerance of BZD27C47PW?
The BZD27C47PW has a zener voltage range of 44.7 V (min) to 49.4 V (max) at 10 mA test current, corresponding to ±5% tolerance around the nominal 47 V rating. This tolerance is guaranteed per the electrical specifications table in Taiwan Semiconductor's D2203 datasheet revision and applies under standard test conditions (TA = 25 °C).
Does BZD27C47PW support high-surge applications?
Yes, BZD27C47PW supports high-surge applications with a non-repetitive peak pulse power dissipation of 100 W for 10/1000 µs waveform, as specified for the BZD27C110PW–BZD27C220PW subgroup. This enables use in PoE line protection and industrial input stage clamping where transient energy exceeds standard zener capabilities.
What is the thermal resistance of BZD27C47PW?
The BZD27C47PW has a junction-to-ambient thermal resistance (RθJA) of 85 °C/W when mounted on a standard PCB, and junction-to-lead resistance (RθJL) of 22 °C/W. These values are measured per JEDEC standards and define derating curves for continuous power operation across ambient temperatures.
Is BZD27C47PW compatible with lead-free reflow processes?
Yes, BZD27C47PW features matte tin-plated leads compliant with J-STD-002 for solderability and is rated for moisture sensitivity level 1 per J-STD-020-meaning it can be used directly in lead-free reflow without baking, supporting standard 260 °C peak temperature profiles.
What is the leakage current specification for BZD27C47PW?
The BZD27C47PW exhibits a maximum leakage current of 2.3 µA at 36 V reverse voltage (VR), as confirmed in the Electrical Specifications table. This low leakage supports high-impedance reference designs and minimizes standby power loss in battery-backed systems.
BZD27C47PW 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):
- 47 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 45 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 36 V
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 200 mA
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
BZD27C47PW FAQ
1.How can I place an order for BZD27C47PW through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27C47PW 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 BZD27C47PW reliable?
The price and inventory of BZD27C47PW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZD27C47PW is usually 5 days.
3.What payment methods are accepted for BZD27C47PW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27C47PW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27C47PW?
BZD27C47PW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27C47PW 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 BZD27C47PW?
For technical support, including BZD27C47PW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27C47PW requirements.
6.How does Aetrix verify that BZD27C47PW is sourced from the original manufacturer or authorized distributors?
All BZD27C47PW 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 BZD27C47PW meets industry standards.
7.What is the process for return or replacement of BZD27C47PW?
All BZD27C47PW units undergo pre-shipment inspection (PSI). If there is an issue with BZD27C47PW, 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 BZD27C47PW part is unused and in its original packaging.
Return procedure for BZD27C47PW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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