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Taiwan Semiconductor Corporation BZD27C22PWH
- Part No.:
- BZD27C22PWH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Zener Diodes
- Package:
- SOD-123W
- Datasheet:
-
BZD27C22PWH.pdf
- Description:
- DIODE ZENER 22V 1W SOD123W
- Quantity:
- Payment:
- Shipping:
Inventory:9
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Product details
Overview
BZD27C22PWH from Taiwan Semiconductor is a 1 W, 22 V ±5% Zener diode in SOD-123W package, designed for precision voltage regulation and transient overvoltage protection in automotive and industrial power rails. It delivers 22 V nominal Zener voltage at 25 mA test current, 15 Ω dynamic impedance, and clamps to 31.0 V under 10/1000 µs surge (IRSM), supporting AEC-Q101 qualified systems.
For engineers reviewing the BZD27C22PWH datasheet, BZD27C22PWH pinout, BZD27C22PWH application, or BZD27C22PWH equivalent, key selection criteria include Zener voltage tolerance (±5%), low leakage (<1.0 µA at VR = 16 V), thermal stability (αVZ = 0.06–0.11 %/°C), and surge capability (PRSM = 150 W for 10/1000 µs waveform).
Technical Context
The BZD27C22PWH operates as a single-die, silicon-based Zener diode with cathode-band polarity indication and optimized junction-to-lead thermal resistance (22 °C/W). Its design targets stable reference generation and fast clamping response in DC power conditioning circuits.
It supports operation across –55 °C to +175 °C junction temperature range, meets J-STD-020 moisture sensitivity level 1, and features matte tin-plated leads compliant with J-STD-002 solderability standards - enabling robust reflow assembly in high-reliability applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.9–23.1 V @ IZT = 25 mA - tight 5% tolerance ensures accurate voltage reference in feedback loops. |
| Power Dissipation (Ptot) | 1.0 W at TA = 25°C (Cu pad 5 mm × 5 mm) - defines continuous steady-state thermal limit. |
| Surge Power (PRSM) | 150 W @ 10/1000 µs waveform - enables robust ESD and load-dump protection in 12 V automotive systems. |
| Zener Impedance (ZZT) | 15 Ω @ IZT = 25 mA - low dynamic impedance maintains regulation accuracy under varying load currents. |
| Clamping Voltage (VC) | 31.0 V @ IRSM - peak voltage during surge limits stress on downstream ICs and passives. |
| Leakage Current (IR) | <1.0 µA @ VR = 16 V - minimizes standby power loss in battery-backed or low-power circuits. |
| Temp. Coefficient (αVZ) | 0.06–0.11 %/°C - predictable drift enables stable reference performance across wide ambient ranges. |
Pinout & Package
Package: SOD-123W - low-profile surface-mount case with UL 94V-0 molding compound, 0.016 g weight, and cathode band polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground node | Connected to circuit ground or lower-potential rail; forms reference node for regulated output. |
| Cathode | Zener breakdown terminal / voltage clamp input | Connected to protected line (e.g., 12 V rail); conducts during overvoltage to shunt excess energy. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22-A114. |
| Low-profile SOD-123W package | Enables high-density PCB layouts and compatibility with standard 0805 footprint reflow profiles. |
| Junction-to-lead thermal resistance (RθJL) | 22 °C/W - improves thermal coupling to copper pour, supporting sustained 1 W operation without derating. |
| Moisture sensitivity level 1 | Eliminates bake requirements before reflow, reducing manufacturing cost and process complexity. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU for environmentally constrained supply chains. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting microcontroller GPIO and CAN transceiver supply lines against load dump and jump-start transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Zener clamping device placed between VCC and GND to clamp surges above 22 V while maintaining stable bias for logic-level interfaces. Use Value: Limits peak voltage to 31.0 V during 10/1000 µs events, preventing latch-up or permanent damage to 3.3 V/5 V logic components. |
Use Scenario: Safeguarding analog input channels of programmable logic controllers exposed to field wiring-induced surges in factory automation environments. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V sensor supply rail, working in concert with series resistors and TVS diodes for multi-stage protection. Use Value: Provides precise 22 V regulation and low-leakage (<1 µA) hold-off, minimizing measurement error and offset drift in precision ADC front-ends. |
| DC-DC Converter Feedback Reference | LED Driver Voltage Clamp |
Use Scenario: Stabilizing feedback voltage in isolated flyback or buck-boost converters where secondary-side regulation requires high-accuracy reference. IC Role / Device Role / Timing Role: Precision Zener reference connected to optocoupler LED anode or TL431 cathode to set output voltage setpoint. Use Value: Delivers ±5% VZ tolerance and 15 Ω ZZT, ensuring <±1% output regulation accuracy across line/load/temperature. |
Use Scenario: Clamping reverse voltage across parallel LED strings in constant-current driver circuits to prevent catastrophic failure during open-circuit faults. IC Role / Device Role / Timing Role: Transient voltage suppressor placed across LED array to absorb inductive kickback when MOSFET switches off. Use Value: Withstands 150 W non-repetitive surge and clamps to 31.0 V, protecting LEDs rated for ≤35 V reverse breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STMicroelectronics BZT52C22S | Same SOD-123 package, 22 V nominal, but higher ZZT (30 Ω vs. 15 Ω) and lower PRSM (100 W vs. 150 W). | Limited to lower-energy surge environments; less suitable for automotive load-dump compliance. | Prefer BZD27C22PWH where tighter regulation and higher surge margin are required. |
| Vishay PLZ22 | SOD-123W package, 22 V, but not AEC-Q101 qualified; higher leakage (≤5 µA vs. ≤1 µA) and no MSL1 rating. | Restricted to commercial-grade applications; unsuitable for automotive or harsh-environment deployment. | Select BZD27C22PWH for mission-critical or automotive-qualified designs requiring full reliability validation. |
Compared with BZT52C22S and PLZ22, the BZD27C22PWH offers superior surge robustness (150 W PRSM), lower dynamic impedance (15 Ω), and full AEC-Q101 qualification - making it the preferred choice for automotive and industrial systems demanding long-term parametric stability and fault resilience.
Availability
BZD27C22PWH is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC input protection, and DC-DC converter feedback reference circuits requiring stable component supply, traceable sourcing, and lifecycle continuity.
Supply support for BZD27C22PWH 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 BZD27C22PWH belongs to TSC's AEC-Q101-qualified Zener diode family engineered for high-reliability voltage regulation and transient suppression in 12 V/24 V power systems.
FAQ
What is the Zener voltage tolerance of BZD27C22PWH?
The BZD27C22PWH has a Zener voltage range of 20.9 V to 23.1 V at IZT = 25 mA, corresponding to a ±5% tolerance around the nominal 22 V rating. This tight tolerance ensures consistent regulation performance across production lots and temperature extremes, critical for feedback loop stability in power supplies.
Is BZD27C22PWH suitable for automotive applications?
Yes, the BZD27C22PWH is AEC-Q101 qualified and rated for junction temperatures from –55 °C to +175 °C. Its 150 W surge capability (10/1000 µs), MSL1 moisture rating, and JESD201 Class 2 whisker resistance make it suitable for under-hood and body-control applications in passenger vehicles and commercial fleets.
What is the maximum clamping voltage of BZD27C22PWH during surge events?
The BZD27C22PWH clamps to a maximum of 31.0 V under a 10/1000 µs waveform at rated surge current (IRSM). This value is measured per JEDEC standards and defines the upper voltage limit imposed on protected circuitry during transient overvoltage conditions such as load dump or inductive switching.
Does BZD27C22PWH require special handling for moisture sensitivity?
No - the BZD27C22PWH is rated at Moisture Sensitivity Level 1 (MSL1) per J-STD-020, meaning it can be stored indefinitely at ambient conditions without baking prior to reflow soldering. This eliminates moisture-related popcorning risk and simplifies manufacturing logistics for high-volume SMT assembly.
How does the thermal performance of BZD27C22PWH compare to standard SOD-123 Zeners?
The BZD27C22PWH features a junction-to-lead thermal resistance (RθJL) of 22 °C/W - significantly lower than typical SOD-123 devices (~40–50 °C/W). This enhanced thermal path allows sustained 1 W dissipation with minimal temperature rise when mounted on a 5 mm × 5 mm Cu pad, improving long-term reliability in thermally constrained layouts.
BZD27C22PWH 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):
- 22 V
- Tolerance:
- ±5%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 16 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
BZD27C22PWH FAQ
1.How can I place an order for BZD27C22PWH through Aetrix?
Please submit a Request for Quotation (RFQ) for BZD27C22PWH 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 BZD27C22PWH reliable?
The price and inventory of BZD27C22PWH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZD27C22PWH is usually 5 days.
3.What payment methods are accepted for BZD27C22PWH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZD27C22PWH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZD27C22PWH?
BZD27C22PWH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZD27C22PWH 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 BZD27C22PWH?
For technical support, including BZD27C22PWH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZD27C22PWH requirements.
6.How does Aetrix verify that BZD27C22PWH is sourced from the original manufacturer or authorized distributors?
All BZD27C22PWH 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 BZD27C22PWH meets industry standards.
7.What is the process for return or replacement of BZD27C22PWH?
All BZD27C22PWH units undergo pre-shipment inspection (PSI). If there is an issue with BZD27C22PWH, 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 BZD27C22PWH part is unused and in its original packaging.
Return procedure for BZD27C22PWH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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