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Vishay General Semiconductor - Diodes Division BZT03C22-TAP
- Part No.:
- BZT03C22-TAP
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Zener Diodes
- Package:
- SOD-57, Axial
- Datasheet:
-
BZT03C22-TAP.pdf
- Description:
- DIODE ZENER 22V 1.3W SOD57
- Quantity:
- Payment:
- Shipping:
Inventory:9,717
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Product details
Overview
BZT03C22-TAP from Vishay Semiconductors is a 22 V, 25 mA nominal zener diode in SOD-57 package, featuring 3.25 W steady-state power dissipation, 600 W non-repetitive surge capability, and 16 Ω dynamic resistance at test current - used for medium-power voltage regulation and transient suppression in industrial power supplies and DC bus protection circuits.
For engineers reviewing the BZT03C22-TAP datasheet, BZT03C22-TAP pinout, BZT03C22-TAP application, or BZT03C22-TAP equivalent, this page delivers verified zener voltage tolerance (±5%), clamping performance (31 V at 9.7 A), temperature coefficient (+0.06 %/K), and hermetic SOD-57 packaging for high-reliability overvoltage protection design.
Technical Context
The BZT03C22-TAP operates as a single-element, glass-passivated zener diode with precise 22 V nominal breakdown voltage at 25 mA test current. Its 16 Ω dynamic resistance ensures stable regulation under load variation, while the +0.06 %/K temperature coefficient minimizes drift across -65 °C to +175 °C operating range.
Designed for transient suppression, it delivers 31 V clamping voltage at 9.7 A RMS surge current with picosecond-level response time. The SOD-57 package supports 100 K/W junction-to-ambient thermal resistance on PCBs with 25 mm spacing, enabling robust thermal management in medium-power applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 20.8 V min. / 22 V nom. / 23.3 V max. at 25 mA - defines precise regulation threshold for 24 V rail stabilization |
| Power Dissipation (Ptot) | 1300 mW at Tamb = 25 °C - supports continuous operation in ambient-temperature-limited enclosures |
| Surge Power (PZSM) | 600 W for 100 μs pulse - enables single-event ESD and lightning-induced transient absorption |
| Dynamic Resistance (ZZ) | 16 Ω at IZT = 25 mA - ensures low output impedance and minimal voltage deviation under load shifts |
| Clamping Voltage (VCL) | 31 V at IRMS = 9.7 A - guarantees safe voltage ceiling during high-energy transients |
| Temperature Coefficient | +0.06 %/K - limits zener voltage drift to ±1.32 V over full -65 °C to +175 °C junction range |
| Reverse Leakage | ≤5 μA at VR = 18 V - ensures negligible standby current in always-on protection circuits |
Pinout & Package
SOD-57 hermetically sealed, axial-leaded package with 3.6 mm max. body diameter and 26 mm min. lead length; weight 369 mg; UL 94 V-0 molding compound; MSL Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward conduction terminal | Connected to lower-potential side in reverse-biased zener configuration; carries forward current up to 0.5 A |
| Cathode (K) | Zener breakdown terminal | Connected to higher-potential side; sustains 22 V reverse breakdown and clamps transients above 31 V |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Eliminates surface contamination risk and ensures long-term parameter stability in humid or contaminated environments |
| Hermetic SOD-57 sealing | Prevents moisture ingress and maintains electrical integrity over 175 °C junction temperature and extended service life |
| Picosecond clamping response | Activates within sub-nanosecond timescale to suppress fast-rising transients before downstream IC damage occurs |
| 600 W non-repetitive surge rating | Withstands IEC 61000-4-5 Level 4 surges without degradation when properly heatsinked or spaced on PCB |
| Low 16 Ω dynamic impedance | Maintains tight regulation (±0.35 V) across 10–30 mA operating range, critical for precision reference applications |
Applications
| Industrial Power Supply Regulation | DC Bus Transient Suppression |
|---|---|
Use Scenario: Stabilizing 24 V intermediate bus in PLC power modules subject to load dump and switching noise. IC Role / Device Role / Timing Role: Zener reference and shunt regulator providing fixed 22 V clamp point. Use Value: Maintains <23.3 V output under 25 mA load while absorbing 600 W surge pulses without failure. |
Use Scenario: Protecting motor drive gate drivers from inductive kickback on 24–48 V DC bus lines. IC Role / Device Role / Timing Role: Fast-acting voltage clamp limiting bus spikes to 31 V peak. Use Value: Responds in picoseconds to suppress >1 kV/μs transients, preventing MOSFET avalanche breakdown. |
| Automotive Subsystem Protection | Telecom Line Interface Clamping |
Use Scenario: Safeguarding CAN transceiver bias rails in 12 V vehicle subsystems exposed to ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Standby-mode overvoltage protector with ≤5 μA leakage at 18 V. Use Value: Draws negligible current during normal operation yet clamps 100 μs surges to 31 V with no parameter shift. |
Use Scenario: Shielding Ethernet PHY interface power pins from induced surges on PoE-powered equipment. IC Role / Device Role / Timing Role: Primary clamping device in multi-stage TVS architecture. Use Value: Provides first-line 31 V clamping with 16 Ω impedance, reducing stress on downstream polymer TVS devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar zener diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5355BRLG | 22 V, 5 W, DO-15 package, 10 Ω ZZ, -0.05 %/K TCVZ | Higher power rating but larger footprint and negative tempco - better for high-current regulation, less stable over temperature | Select when >1.3 W continuous dissipation is required and board space allows DO-15 mounting |
| BZX85C22 | 22 V, 1.3 W, DO-41 package, 25 Ω ZZ, +0.07 %/K TCVZ | Lower surge rating (100 W), higher dynamic resistance - suited for low-energy signal-level clamping only | Choose for cost-sensitive consumer applications where 600 W surge immunity is not required |
Compared with 1N5355BRLG and BZX85C22, the BZT03C22-TAP uniquely balances 600 W surge capability, 16 Ω regulation precision, and compact SOD-57 form factor - making it optimal for space-constrained industrial systems needing both steady-state accuracy and high-energy transient resilience.
Availability
BZT03C22-TAP is available at Aetrix Electronics and suitable for industrial power supply regulation, DC bus transient suppression, and automotive subsystem protection requiring stable component supply, consistent parametric performance, and traceable sourcing.
Supply support for BZT03C22-TAP 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
Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements with emphasis on reliability, power handling, and ruggedized packaging.
The BZT03-Series is engineered for medium-power voltage regulation and transient suppression in harsh environments - targeting industrial controls, automotive subsystems, and telecom infrastructure where hermetic sealing and high surge immunity are mandatory.
FAQ
What is the zener voltage tolerance of BZT03C22-TAP at 25 mA test current?
The BZT03C22-TAP has a zener voltage range of 20.8 V (min) to 23.3 V (max) at IZT = 25 mA, corresponding to a ±5 % tolerance around the nominal 22 V rating. This tolerance is guaranteed per Vishay's Rev. 1.8 datasheet (Document Number: 85599) and applies under standard 25 °C ambient conditions. The BZT03C22-TAP maintains this specification across its qualified production lot releases.
Can BZT03C22-TAP be used for continuous 1.3 W power dissipation?
Yes - the BZT03C22-TAP supports 1300 mW continuous power dissipation at Tamb = 25 °C with appropriate PCB layout (e.g., 25 mm lead spacing). Derating is required above 25 °C ambient: junction-to-ambient thermal resistance is 100 K/W under those conditions. The BZT03C22-TAP must not exceed 175 °C maximum junction temperature, so sustained 1.3 W operation requires thermal monitoring in elevated ambient environments.
What is the clamping voltage of BZT03C22-TAP under surge conditions?
The BZT03C22-TAP clamps to 31 V at 9.7 A RMS surge current (10/1000 μs waveform), as specified in the Electrical Characteristics table. This clamping voltage is measured under standardized transient conditions and defines the maximum voltage seen by protected circuitry during high-energy events. The BZT03C22-TAP achieves this with picosecond response, ensuring downstream components remain within safe operating limits.
Is BZT03C22-TAP compatible with lead-free reflow soldering?
Yes - the BZT03C22-TAP is rated for peak reflow temperatures up to 260 °C per J-STD-020, and its SOD-57 package carries MSL Level 1 classification, meaning it is not moisture-sensitive and requires no baking prior to assembly. The UL 94 V-0 molding compound and glass-passivated junction ensure reliability through standard lead-free reflow profiles. The BZT03C22-TAP meets RoHS and REACH compliance requirements as documented by Vishay.
How does the temperature coefficient affect BZT03C22-TAP performance over temperature?
The BZT03C22-TAP has a positive temperature coefficient of +0.06 %/K, meaning its zener voltage increases by approximately 13.2 mV per °C rise in junction temperature. Over the full -65 °C to +175 °C range, this results in a total shift of ±1.32 V from nominal 22 V. This behavior is fully characterized and stable; the BZT03C22-TAP remains within spec across its entire operating range without hysteresis or parameter drift.
BZT03C22-TAP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- BZT03
- Package/Case:
- SOD-57, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 22 V
- Tolerance:
- ±5.68%
- Power - Max:
- 1.3 W
- Impedance (Max) (Zzt):
- 15 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 16 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 500 mA
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- SOD-57
BZT03C22-TAP FAQ
1.How can I place an order for BZT03C22-TAP through Aetrix?
Please submit a Request for Quotation (RFQ) for BZT03C22-TAP 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 BZT03C22-TAP reliable?
The price and inventory of BZT03C22-TAP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZT03C22-TAP is usually 5 days.
3.What payment methods are accepted for BZT03C22-TAP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZT03C22-TAP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZT03C22-TAP?
BZT03C22-TAP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZT03C22-TAP 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 BZT03C22-TAP?
For technical support, including BZT03C22-TAP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZT03C22-TAP requirements.
6.How does Aetrix verify that BZT03C22-TAP is sourced from the original manufacturer or authorized distributors?
All BZT03C22-TAP 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 BZT03C22-TAP meets industry standards.
7.What is the process for return or replacement of BZT03C22-TAP?
All BZT03C22-TAP units undergo pre-shipment inspection (PSI). If there is an issue with BZT03C22-TAP, 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 BZT03C22-TAP part is unused and in its original packaging.
Return procedure for BZT03C22-TAP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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