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Vishay General Semiconductor - Diodes Division P6SMB22A-E3/52
- Part No.:
- P6SMB22A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22A-E3/52.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,260
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Product details
Overview
P6SMB22A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 22 V breakdown voltage (VBR = 20.9–23.1 V at IT = 1.0 mA), 18.8 V stand-off voltage (VWM), 30.6 V maximum clamping voltage (VC) at 19.6 A peak pulse current, and 600 W peak pulse power rating with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB22A-E3/52 datasheet, P6SMB22A-E3/52 pinout, P6SMB22A-E3/52 application, or P6SMB22A-E3/52 equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, MSL Level 1 moisture sensitivity, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a voltage-clamping protection device: under normal conditions it presents high impedance (>1 MΩ leakage at VWM), but switches to low-impedance conduction when transient voltage exceeds VBR, limiting downstream voltage to ≤30.6 V. Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns).
The device is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), supports 5.0 W steady-state power dissipation at TA = 50 °C, and exhibits a +0.092 %/°C temperature coefficient of VBR, enabling predictable clamping behavior across -65 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1.0 mA test current - defines precise avalanche initiation threshold for reliable overvoltage detection |
| VWM | 18.8 V - maximum continuous reverse working voltage before significant leakage begins |
| VC @ IPPM | 30.6 V at 19.6 A - clamped voltage during 600 W transient, determining protected circuit's worst-case stress level |
| IPPM | 19.6 A - peak pulse current capability with 10/1000 μs waveform, defining surge energy handling capacity |
| PPPM | 600 W - peak pulse power rating, specifying transient energy absorption without failure |
| TJ max | +150 °C - maximum junction temperature, setting thermal derating limits for PCB layout and ambient design |
| RθJA | 100 °C/W - typical junction-to-ambient thermal resistance on standard 0.2" × 0.2" copper pads, guiding heatsinking requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads; cathode indicated by band marking; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected line ground or low-side reference | Provides return path during transient clamping; must be routed with low-inductance trace to minimize overshoot |
| Cathode | Current exit terminal in forward bias; marked with band; connected to protected line (e.g., VCC, signal) | Defines polarity-sensitive connection point; reverse-biased during normal operation; conducts only during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables robust protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) on 24 V DC rails without derating |
| Glass passivated junction | Ensures stable, repeatable avalanche characteristics over 1000+ transient events and >10-year field life |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow soldering without preconditioning or baking |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., ESD, inductive switch-off) |
| AEC-Q101 qualification option (HE3/HM3) | Validates reliability for automotive powertrain and body electronics applications requiring zero defect rates |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V DC input stage of PLC I/O modules against load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND to clamp surges before they reach DC-DC controller and LDOs. Use Value: Limits transient voltage to ≤30.6 V, preventing latch-up or gate oxide damage in downstream 36 V-rated regulators and microcontrollers. |
Use Scenario: Safeguarding LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine control units. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to absorb ISO 7637-2 Pulse 1/2a/5a transients before reaching signal conditioning circuitry. Use Value: Clamps 100 V/500 ms load dump pulses to safe levels while maintaining <1 μA leakage at 18.8 V, preserving sensor accuracy. |
| Consumer Equipment AC/DC Adapter Input | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side overvoltage suppression in universal-input SMPS for smart home hubs and set-top boxes. IC Role / Device Role / Timing Role: Placed across bulk capacitor output to suppress flyback transformer ringing and rectifier reverse recovery spikes. Use Value: Absorbs 600 W pulses with <1 ns response, reducing EMI filter component count and improving conducted emission margins. |
Use Scenario: Front-end protection of Ethernet PHY power pins and auxiliary 12 V bias rails in enterprise PoE switches. IC Role / Device Role / Timing Role: TVS deployed per-port on 12 V auxiliary supply to meet GR-1089-CORE Level 4 lightning surge immunity (6 kV/3 kA). Use Value: Withstands repetitive 19.6 A surges at 0.01% duty cycle, ensuring long-term reliability without parameter drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A (Bourns) | Same SMB package, identical VBR (20.9–23.1 V), but higher VC = 33.2 V at 17.6 A; 10% lower peak pulse current | Limited to lower-energy transients; not recommended for IEC 61000-4-5 Level 4 compliance | Select P6SMB22A-E3/52 when clamping voltage margin below 31 V is required or when full 600 W rating must be utilized. |
| 1.5SMC22A (ON Semiconductor) | Same electrical specs, but in larger SMC (DO-214AB) package; 20% higher RθJA (120 °C/W); no AEC-Q101 variant available | Requires larger PCB footprint; unsuitable for space-constrained automotive modules | Choose P6SMB22A-E3/52 for high-density layouts or where AEC-Q101 qualification may be needed in future revisions. |
Compared with SMBJ22A and 1.5SMC22A, P6SMB22A-E3/52 delivers tighter clamping (30.6 V vs. ≥33.2 V), superior thermal performance (100 °C/W vs. ≥120 °C/W), and direct AEC-Q101 qualification path - making it optimal for compact, high-reliability 24 V industrial and automotive systems.
Availability
P6SMB22A-E3/52 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor interfaces, consumer AC/DC adapters, and telecom line cards requiring stable component supply, RoHS compliance, and SMT-ready packaging.
Supply support for P6SMB22A-E3/52 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 General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability, precision, and high-volume manufacturability.
The P6SMB Series is engineered for cost-effective, high-power transient suppression in space-constrained surface-mount applications - targeting industrial automation, automotive electronics, and infrastructure equipment where robustness and consistency are critical.
FAQ
What is the maximum clamping voltage of P6SMB22A-E3/52 under standard test conditions?
The P6SMB22A-E3/52 has a maximum clamping voltage (VC) of 30.6 V at 19.6 A peak pulse current with a 10/1000 μs waveform. This value is measured per JEDEC standards and represents the upper limit of voltage seen by protected circuitry during a defined surge event. The P6SMB22A-E3/52 maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C) with minimal drift due to its +0.092 %/°C VBR coefficient.
Is P6SMB22A-E3/52 suitable for automotive applications?
P6SMB22A-E3/52 is RoHS-compliant and qualified to AEC-Q101 when ordered with HE3 or HM3 suffixes (e.g., P6SMB22AHE3_B). The base P6SMB22A-E3/52 itself is commercial-grade but shares identical electrical and thermal specifications. For automotive use, specify the AEC-Q101 variant; the P6SMB22A-E3/52 serves as the foundational platform for those qualified versions and is widely deployed in non-safety-critical body electronics.
How does the SMB (DO-214AA) package of P6SMB22A-E3/52 compare thermally to larger packages like SMC?
The SMB package of P6SMB22A-E3/52 provides a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W on 0.2" × 0.2" copper pads, which is 20% lower than the 120 °C/W typical for SMC-packaged equivalents like 1.5SMC22A. This improved thermal efficiency allows the P6SMB22A-E3/52 to sustain higher pulse repetition rates or operate in tighter ambient conditions without exceeding its 150 °C TJ limit.
What is the reverse leakage current specification for P6SMB22A-E3/52 at its stand-off voltage?
At its maximum stand-off voltage of 18.8 V and ambient temperature of 25 °C, the P6SMB22A-E3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA. This ultra-low leakage ensures minimal power loss in always-on circuits and preserves signal integrity in high-impedance sensor interfaces - a key advantage over older TVS families that specify up to 5 μA at VWM.
Can P6SMB22A-E3/52 be used in bidirectional configurations?
No - P6SMB22A-E3/52 is a unidirectional TVS diode, identified by its cathode band marking. For bidirectional operation, Vishay offers the P6SMB22CA variant (with 'CA' suffix), which provides symmetrical clamping in both polarities. Using P6SMB22A-E3/52 in reverse-biased configurations risks permanent breakdown; always verify polarity alignment during PCB layout to ensure the cathode connects to the line being protected.
P6SMB22A-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 19.6A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB22A-E3/52 FAQ
1.How can I place an order for P6SMB22A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22A-E3/52 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 P6SMB22A-E3/52 reliable?
The price and inventory of P6SMB22A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22A-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB22A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22A-E3/52?
P6SMB22A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22A-E3/52 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 P6SMB22A-E3/52?
For technical support, including P6SMB22A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22A-E3/52 requirements.
6.How does Aetrix verify that P6SMB22A-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB22A-E3/52 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 P6SMB22A-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB22A-E3/52?
All P6SMB22A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22A-E3/52, 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 P6SMB22A-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB22A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22A-E3/52 Tags
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