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Vishay General Semiconductor - Diodes Division BZG04-22TR
- Part No.:
- BZG04-22TR
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
BZG04-22TR.pdf
- Description:
- TVS DIODE 22VWM 38.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,999
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Product details
Overview
BZG04-22TR from Vishay Semiconductors is a glass-passivated Zener diode designed for transient voltage suppression in power and signal lines. It features a nominal standoff voltage of 22 V, clamping voltage of 38.1 V at 7.9 A peak pulse current, 300 W non-repetitive surge power rating, and DO-214AC (SMA) package. It is used in DC power rail protection against ESD and lightning-induced surges.
For engineers reviewing the BZG04-22TR datasheet, BZG04-22TR pinout, BZG04-22TR application, or BZG04-22TR equivalent, key selection criteria include clamping voltage margin, surge current capability, thermal resistance to PCB layout, and RoHS-compliant lead-free construction.
Technical Context
The BZG04-22TR operates as a unidirectional voltage-clamping device with a sharp Zener breakdown at 25.1 V (min) under 25 mA test current. Its fast response time (≤1 ps) enables effective suppression of nanosecond-scale transients, and its low junction capacitance (545 pF at 0 V) minimizes signal distortion in moderate-speed interfaces.
Thermal performance depends on PCB mounting: RthJA ranges from 100 K/W (on Al2O3 ceramic) to 150 K/W (on epoxy-glass), directly impacting sustained power handling. The 150 °C maximum junction temperature and 77 mg mass support compact, thermally constrained designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VR) | 22 V - Maximum continuous reverse voltage before conduction begins; sets operating margin below clamping threshold. |
| Breakdown Voltage (VBR) | 25.1 V min @ 25 mA - Ensures reliable turn-on during overvoltage events without premature leakage. |
| Clamping Voltage (VCL) | 38.1 V @ 7.9 A - Peak voltage seen by protected circuit during 10/1000 µs surge; defines safe downstream IC stress limit. |
| Surge Power (PZSM) | 300 W - Withstands high-energy transients (e.g., IEC 61000-4-5 Level 4) without failure. |
| Junction Capacitance (Cj) | 545 pF @ 0 V - Low enough for <10 MHz analog/power line applications; avoids signal loading in sensor or control inputs. |
| Package | DO-214AC (SMA) - Surface-mount, industry-standard footprint compatible with automated assembly and thermal relief pads. |
Pinout & Package
DO-214AC (SMA) package: molded plastic body with axial leads trimmed and formed for surface mounting; cathode indicated by band; typical weight 77 mg.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse bias reference | Connected to lower-potential node (e.g., GND or return path); defines polarity of clamping action. |
| Cathode | Zener breakdown terminal / Surge current sink | Connected to protected line (e.g., +24 V rail); conducts surge current to ground when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Enables stable Zener voltage and low leakage (<5 µA at 22 V) across temperature and lifetime. |
| Fast response time ≤1 ps | Clamps sub-nanosecond ESD events (IEC 61000-4-2) before sensitive circuitry reacts. |
| Lead (Pb)-free & RoHS-compliant | Meets global environmental regulations without compromising solderability or thermal cycling reliability. |
| High surge current rating (50 A IFSM) | Survives repeated 10 ms half-sine surges common in industrial motor drive and relay switching environments. |
Applications
| Industrial PLC I/O Protection | Automotive Body Control Module |
|---|---|
Use Scenario: 24 V DC input channels in programmable logic controllers exposed to inductive kickback and field wiring faults. IC Role / Device Role / Timing Role: Primary transient voltage suppressor placed at connector entry point before signal conditioning circuitry. Use Value: Limits voltage to ≤38.1 V during 10/1000 µs surges, protecting downstream op-amps and ADCs rated for 40 V absolute maximum. | Use Scenario: LIN bus or switched 12 V supply lines in door modules subject to load dump and jump-start transients. IC Role / Device Role / Timing Role: Unidirectional clamping diode on power rail, coordinated with upstream fuse and TVS array. Use Value: Absorbs 300 W surge energy without degradation, maintaining system uptime per ISO 7637-2 Pulse 1/2/5a requirements. |
| Telecom Power Feeds | Renewable Energy Inverter DC Link |
Use Scenario: -48 V telecom rectifier outputs feeding remote radio units, vulnerable to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Secondary protection stage after gas discharge tube (GDT), providing low-clamp precision. Use Value: Clamps residual transients to 38.1 V within 1 ps, preventing latch-up in PMICs and FET drivers downstream. | Use Scenario: DC link between PV array and inverter H-bridge, where capacitor charging transients and grid fault recovery cause voltage overshoot. IC Role / Device Role / Timing Role: Parallel-mounted Zener clamp on bulk capacitor terminals to limit overvoltage during rapid current interruption. Use Value: Handles 7.9 A peak pulse current while maintaining <545 pF capacitance, avoiding resonance with µH-level stray inductance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Higher clamping voltage (35.5 V @ 10.1 A), larger SMB package (DO-214AA), 600 W PZSM | Better suited for higher-energy surges but requires more PCB area and has higher VCL margin. | Select SMBJ22A only if surge energy exceeds 300 W or board space allows larger footprint. |
| P6SMB22A | Same DO-214AA package as SMBJ22A; identical electrical specs but different branding and qualification history. | No functional difference in clamping or thermal behavior; differs only in manufacturer traceability and lot-level testing protocols. | Choose P6SMB22A when dual-sourcing or legacy design continuity with ON Semiconductor is required. |
Compared with BZG04-22TR, SMBJ22A offers higher surge capacity but less precise clamping and larger footprint, while P6SMB22A provides identical performance with alternate supply chain assurance-neither is pin-compatible due to DO-214AC vs. DO-214AA package mismatch.
Availability
BZG04-22TR is available at Aetrix Electronics and suitable for industrial PLC I/O protection, automotive body control modules, and telecom power feed applications requiring stable component supply, RoHS compliance, and consistent surge performance across production batches.
Supply support for BZG04-22TR 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 Semiconductors is a global manufacturer of discrete semiconductors and passive components, specializing in high-reliability devices for industrial, automotive, and computing markets.
The BZG04-Series was developed specifically for robust, cost-effective transient voltage suppression in DC power systems where precise clamping, fast response, and long-term stability are critical.
FAQ
What is the maximum clamping voltage of the BZG04-22TR under standard surge conditions?
The BZG04-22TR has a maximum clamping voltage of 38.1 V when subjected to a 10/1000 µs surge waveform at 7.9 A peak current. This value is measured per IEC 61000-4-5 test conditions and defines the upper voltage limit imposed on protected circuits during transient events. The BZG04-22TR maintains this clamping performance consistently across its qualified temperature range and lifetime, as verified in Vishay's qualification testing per Document Number 85594 Rev. 2.2.
Is the BZG04-22TR suitable for bidirectional transient suppression?
No, the BZG04-22TR is a unidirectional Zener diode intended for single-polarity clamping-typically cathode-to-line, anode-to-ground configuration. It does not provide symmetrical clamping for AC or bipolar signals. For bidirectional protection, a pair of BZG04-22TR devices in series opposition or a dedicated bidirectional TVS like SMAJ22CA would be required. The BZG04-22TR datasheet specifies only reverse-bias breakdown characteristics and does not define forward conduction beyond VF = 1.2 V at 0.5 A.
What is the thermal resistance from junction to ambient for the BZG04-22TR on a standard FR-4 PCB?
When mounted on an epoxy-glass hard tissue PCB (per Figure 1a in Vishay Document 85594), the BZG04-22TR exhibits a junction-to-ambient thermal resistance (RthJA) of 150 K/W. This value assumes standard copper pad layout without thermal vias or extended copper pours. For improved thermal performance, mounting on Al2O3 ceramic reduces RthJA to 100 K/W. The BZG04-22TR's 150 °C maximum junction temperature must be respected using these thermal resistances to calculate safe power derating.
Does the BZG04-22TR meet automotive AEC-Q200 requirements?
No, the BZG04-22TR is not AEC-Q200 qualified. Vishay's official documentation (Document Number 85594 Rev. 2.2) lists it for industrial and general-purpose transient suppression, with no mention of automotive qualification testing. While its 150 °C junction rating and robust construction support harsh environments, designers requiring AEC-Q200 compliance should select Vishay's automotive-grade alternatives such as the AUTOMOTIVE BZT52-B22 or SMAJ22A-Q, both explicitly tested to AEC-Q200 standards.
What packaging options are available for the BZG04-22TR?
The BZG04-22TR is supplied in tape-and-reel format: 1.5 k units per 7-inch reel (TR suffix) or 6 k units per 13-inch reel (TR3 suffix). Both options use standard EIA-481-compliant carrier tape with embossed pockets and cover tape. No bulk, ammo-pack, or tray options are specified for the BZG04-22TR in Vishay's documentation. The TR and TR3 variants share identical electrical and mechanical specifications-the only difference is quantity and reel size for SMT placement compatibility.
BZG04-22TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- BZG04
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 22V
- Voltage - Breakdown (Min):
- 25.1V
- Voltage - Clamping (Max) @ Ipp:
- 38.1V
- Current - Peak Pulse (10/1000µs):
- 7.9A
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 545pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
BZG04-22TR FAQ
1.How can I place an order for BZG04-22TR through Aetrix?
Please submit a Request for Quotation (RFQ) for BZG04-22TR 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 BZG04-22TR reliable?
The price and inventory of BZG04-22TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BZG04-22TR is usually 5 days.
3.What payment methods are accepted for BZG04-22TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BZG04-22TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BZG04-22TR?
BZG04-22TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BZG04-22TR 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 BZG04-22TR?
For technical support, including BZG04-22TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BZG04-22TR requirements.
6.How does Aetrix verify that BZG04-22TR is sourced from the original manufacturer or authorized distributors?
All BZG04-22TR 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 BZG04-22TR meets industry standards.
7.What is the process for return or replacement of BZG04-22TR?
All BZG04-22TR units undergo pre-shipment inspection (PSI). If there is an issue with BZG04-22TR, 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 BZG04-22TR part is unused and in its original packaging.
Return procedure for BZG04-22TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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