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Taiwan Semiconductor Corporation BZD27C24PW
- Part No.:
- BZD27C24PW
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
BZD27C24PW.pdf
- Description:
- DIODE ZENER 24V 1W SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:5,542
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Product details
Overview
BZD27C24PW from Taiwan Semiconductor is a 1 W, 24 V ±5% silicon Zener diode in SOD-123W package, rated for 25 mA test current, 33.8 V clamping voltage at surge, and 18 ppm/°C temperature coefficient - used for precision voltage reference and overvoltage protection in DC power rails.
For engineers reviewing the BZD27C24PW datasheet, BZD27C24PW pinout, BZD27C24PW application, or BZD27C24PW equivalent, key selection criteria include zener tolerance (±5%), low leakage (<1.0 µA at 18 V), thermal resistance (RθJA = 85 °C/W), and SOD-123W mounting compatibility with high-density PCB layouts.
Technical Context
The BZD27C24PW operates as a single-die, surface-mount Zener diode optimized for stable voltage regulation under steady-state and transient conditions. It delivers 24 V nominal zener voltage with tight 22.8–25.2 V min/max spread at 25 mA, and maintains low dynamic impedance (ZZT ≤ 15 Ω) to minimize output variation under load shifts.
Its thermal design supports operation up to +175 °C junction temperature, with RθJL = 22 °C/W enabling effective heat transfer to PCB copper pads. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1, ensuring robust reflow reliability without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage VZ | 22.8–25.2 V @ 25 mA - ensures ±5% regulation accuracy across production lots and temperature |
| Power Dissipation Ptot | 1.0 W @ TA = 25°C on 5 mm × 5 mm Cu pad - defines continuous safe operating area without derating |
| Clamping Voltage VC | 33.8 V @ 10/1000 µs waveform - limits transient overvoltage during ESD/surge events |
| Zener Impedance ZZT | ≤15 Ω @ 25 mA - maintains regulation stability under dynamic load changes |
| Leakage Current IR | <1.0 µA @ 18 V - minimizes standby power loss in battery-backed reference circuits |
| Temp. Coefficient αVZ | 0.06–0.11 %/°C - enables predictable drift compensation in precision analog designs |
Pinout & Package
Package: SOD-123W - low-profile, surface-mount plastic case with matte tin-plated leads, UL 94V-0 rated molding compound, and cathode band polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential node in reverse-biased Zener configuration; enables standard rectifier layout reuse |
| Cathode | Zener breakdown terminal | Marked by band; connects to higher-potential rail to establish regulated reference or clamp point |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SOD-123W package | Enables placement in space-constrained power management sections without height interference |
| 1.0 µA max leakage @ 18 V | Reduces error contribution in high-impedance voltage reference dividers and sensor bias networks |
| 175 °C maximum junction temperature | Supports operation in automotive under-hood and industrial motor drive environments |
| J-STD-020 MSL Level 1 rating | Allows direct placement without pre-baking, reducing manufacturing cycle time and cost |
Applications
| Industrial Power Supply Reference | Automotive ECU Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing feedback voltage in isolated flyback converters for PLC I/O modules. IC Role / Device Role / Timing Role: Zener reference element providing 24 V基准 for TL431 or optocoupler biasing. Use Value: Tight 5% VZ tolerance and low ZZT ensure <±1% output regulation across line/load/temperature. | Use Scenario: Protecting 24 V CAN transceiver inputs against load dump transients. IC Role / Device Role / Timing Role: Standby clamping diode shunting surge energy before it reaches sensitive interface ICs. Use Value: 33.8 V clamping voltage and 100 W peak pulse rating limit stress to <2× rated input voltage. |
| Medical Sensor Bias Network | Telecom Line Card Voltage Monitor |
Use Scenario: Generating stable excitation voltage for strain gauge bridges in portable diagnostic devices. IC Role / Device Role / Timing Role: Precision voltage reference source in ratiometric measurement paths. Use Value: 0.06–0.11 %/°C tempco and <1 µA leakage preserve measurement accuracy over 0–50 °C ambient range. | Use Scenario: Monitoring -48 V DC plant voltage in telecom shelf controllers with fault logging. IC Role / Device Role / Timing Role: Zener-based threshold detector feeding comparator input. Use Value: Consistent 24 V breakdown enables reliable trip-point setting despite supply ripple and aging. |
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-C24 | Same 24 V nominal, SOD-123 package, but 500 mW rating and higher ZZT (≤30 Ω) | Limited to lower-power references; unsuitable for 1 W surge clamping | Select BZD27C24PW when ≥1 W steady-state dissipation or 100 W transient handling is required |
| Vishay BZX84-C24 | SOD-123 package, 24 V, 350 mW, 100 nA leakage @ 18 V - superior leakage but lower power | Better for ultra-low-power biasing; cannot sustain same thermal load | Choose BZD27C24PW where thermal margin, surge robustness, or tighter VZ tolerance is critical |
Compared with BZT52-C24 and BZX84-C24, the BZD27C24PW provides 2.8× higher power rating, 2× lower dynamic impedance, and tighter zener tolerance - making it preferred for industrial-grade regulation and clamping where thermal and transient performance dominate.
Availability
BZD27C24PW is available at Aetrix Electronics and suitable for industrial power supplies, automotive ECUs, medical sensor modules, and telecom line cards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for BZD27C24PW 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 industrial, automotive, and consumer markets.
The BZD27C series is designed specifically for high-reliability voltage regulation and transient suppression in harsh-environment applications - emphasizing thermal robustness, tight parametric control, and process consistency across wide voltage ranges.
FAQ
What is the zener voltage tolerance of BZD27C24PW?
The BZD27C24PW has a nominal zener voltage of 24 V with a guaranteed range of 22.8 V to 25.2 V at 25 mA test current - corresponding to ±5% tolerance. This specification is verified per the manufacturer's electrical characteristics table and applies across the full operating temperature range of −55 °C to +175 °C. The BZD27C24PW achieves this tolerance via laser-trimmed wafer-level process control.
Does BZD27C24PW support lead-free reflow soldering?
Yes, the BZD27C24PW uses matte tin-plated leads compliant with J-STD-002 solderability requirements and is qualified for lead-free reflow profiles up to 260 °C peak temperature. Its SOD-123W package carries J-STD-020 Moisture Sensitivity Level 1, meaning it can be placed directly from dry pack without baking - simplifying manufacturing for BZD27C24PW integration.
What is the maximum non-repetitive peak pulse power for BZD27C24PW?
The BZD27C24PW supports 100 W non-repetitive peak pulse power dissipation under 10/1000 µs waveform conditions, as specified for devices in the BZD27C110PW–BZD27C220PW group. This value is confirmed in the Absolute Maximum Ratings table and defines the BZD27C24PW's capability to absorb transient surges without degradation when properly mounted on a 5 mm × 5 mm copper pad.
How does the temperature coefficient affect BZD27C24PW in precision circuits?
The BZD27C24PW exhibits a temperature coefficient of 0.06–0.11 %/°C, meaning its zener voltage drifts by approximately 14–26 mV per 10 °C change near 24 V. In precision reference designs, this requires either temperature compensation circuitry or operation within a controlled ambient range. The BZD27C24PW's spec sheet confirms this coefficient applies across the full −55 °C to +175 °C junction range.
Is BZD27C24PW RoHS and halogen-free compliant?
Yes, the BZD27C24PW is RoHS compliant and halogen-free per IEC 61249-2-21. These compliance statements are explicitly declared in the Features section of the official datasheet and verified through material declarations and third-party testing. The BZD27C24PW's SOD-123W molding compound also meets UL 94V-0 flammability standards.
BZD27C24PW 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):
- 24 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 18 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
BZD27C24PW FAQ
1.How can I place an order for BZD27C24PW through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27C24PW 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 BZD27C24PW reliable?
The price and inventory of BZD27C24PW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZD27C24PW is usually 5 days.
3.What payment methods are accepted for BZD27C24PW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27C24PW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27C24PW?
BZD27C24PW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27C24PW 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 BZD27C24PW?
For technical support, including BZD27C24PW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27C24PW requirements.
6.How does Aetrix verify that BZD27C24PW is sourced from the original manufacturer or authorized distributors?
All BZD27C24PW 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 BZD27C24PW meets industry standards.
7.What is the process for return or replacement of BZD27C24PW?
All BZD27C24PW units undergo pre-shipment inspection (PSI). If there is an issue with BZD27C24PW, 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 BZD27C24PW part is unused and in its original packaging.
Return procedure for BZD27C24PW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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