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Vishay General Semiconductor - Diodes Division P6SMB22A-E3/5B
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- Part No.:
- P6SMB22A-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22A-E3/5B.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,843
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Product details
Overview
P6SMB22A-E3/5B 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 1 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-E3/5B datasheet, P6SMB22A-E3/5B pinout, P6SMB22A-E3/5B application, or P6SMB22A-E3/5B equivalent, key selection criteria include unidirectional polarity, SMB package thermal performance (RθJA = 100 °C/W), AEC-Q101 qualification status (not applicable to -E3/5B variant), RoHS compliance, and clamping behavior under repetitive surge conditions.
Technical Context
The P6SMB22A-E3/5B operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling fast response (<1 ns) to ESD and inductive switching transients.
It is rated for 100 A non-repetitive forward surge current (IFSM) and derates linearly above 25 °C ambient per Fig. 2; maximum junction temperature is 150 °C. Mounting on 5.0 mm × 5.0 mm copper pads is required to sustain full 600 W PPPM capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1 mA - defines precise avalanche initiation window for reliable overvoltage triggering |
| VWM | 18.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 30.6 V at 19.6 A - clamped voltage seen by protected circuit during 10/1000 µs transient |
| PPPM | 600 W - peak transient energy absorption capacity under standardized surge waveform |
| RθJA | 100 °C/W - thermal resistance from junction to ambient, requiring defined PCB copper area for thermal management |
| Polarity | Unidirectional - cathode marked by band; blocks forward current, clamps reverse surges only |
| Package | SMB (DO-214AA) - surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path); conducts during forward surge (e.g., IFSM test) |
| Cathode | Reverse-biased clamping terminal | Marked with band; connected to line being protected (e.g., 24 V rail); avalanches when VAK > VBR |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Supports robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 24 V systems |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes stress on downstream components during clamping - critical for 3.3 V/5 V logic interface protection |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure |
| RoHS-compliant, commercial grade | Meets environmental compliance without halogen restrictions; not AEC-Q101 qualified (suffix -HE3/-HM3 required) |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns - no baking required pre-assembly |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: 24 V DC input stage of programmable logic controller (PLC) power module exposed to load dump and relay coil flyback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between +24 V rail and chassis ground to clamp transients before DC-DC converter input. Use Value: Limits voltage excursion to ≤30.6 V during 19.6 A surge, preventing damage to upstream rectifier and downstream buck controller. | Use Scenario: CAN transceiver power line (VCC) in BCM subjected to ISO 7637-2 Pulse 1/2a/5a transients. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5 V supply rail feeding isolated CAN PHY, sized to absorb 600 W pulses without degradation. Use Value: Maintains <1 µA leakage at 18.8 V, ensuring minimal quiescent current impact while clamping to safe levels during load dump events. |
| Consumer Appliance Motor Drive | Telecom PoE Interface |
Use Scenario: H-bridge gate driver supply rail in smart HVAC blower motor, subject to inductive kickback from brushed DC motor commutation. IC Role / Device Role / Timing Role: Unidirectional TVS across VDD and GND of half-bridge driver IC to suppress negative-going spikes. Use Value: Fast <1 ns response captures sub-microsecond transients; 100 A IFSM rating handles repeated motor startup surges. | Use Scenario: Secondary-side 48 V DC input of PoE-powered access point, exposed to Ethernet cable ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on PoE PD front-end, placed before DC-DC controller to limit input voltage during surge events. Use Value: 30.6 V clamping enables use with 48 V nominal input and 60 V max-rated downstream converters, preserving margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Same SMB package, identical VBR (20.9–23.1 V), but higher VC = 33.2 V at 18.1 A; 600 W rating maintained | Higher clamping voltage reduces design margin for low-voltage ICs; suitable where layout allows higher VC | Select SMBJ22A only if system withstand voltage >33.2 V and thermal layout supports same derating curve |
| 1.5SMC22A | Larger SMC (DO-214AB) package; same electrical specs but RθJA = 60 °C/W; 1.5 kW peak power rating | Requires larger PCB area; better thermal performance enables higher duty-cycle operation | Choose 1.5SMC22A for high-reliability industrial designs needing extended surge endurance or elevated ambient temperatures |
Compared with SMBJ22A and 1.5SMC22A, the P6SMB22A-E3/5B offers optimal balance of compact SMB footprint, 30.6 V clamping, and commercial-grade RoHS compliance - making it ideal for space-constrained consumer and industrial boards where AEC-Q101 is not mandated.
Availability
P6SMB22A-E3/5B is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, consumer appliance motor drives, and telecom PoE interfaces requiring stable component supply with full traceability and volume scalability.
Supply support for P6SMB22A-E3/5B 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, efficiency, and application-specific optimization.
The P6SMB Series targets cost-sensitive, high-volume transient protection needs in consumer, industrial, and telecom equipment - delivering standardized 600 W surge capability in the compact SMB package with consistent VBR tolerance and low-leakage performance.
FAQ
What is the maximum clamping voltage of the P6SMB22A-E3/5B under a 10/1000 µs surge?
The P6SMB22A-E3/5B has a maximum clamping voltage (VC) of 30.6 V at 19.6 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This value is measured with the device mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per JEDEC standards. The P6SMB22A-E3/5B maintains this clamping performance across its specified operating temperature range.
Is the P6SMB22A-E3/5B AEC-Q101 qualified?
No, the P6SMB22A-E3/5B is not AEC-Q101 qualified. It is a commercial-grade RoHS-compliant part (suffix -E3). For automotive applications requiring AEC-Q101 qualification, the equivalent part is P6SMB22AHE3_B, which carries the "HE3" suffix and "_B" revision code indicating AEC-Q101 compliance. The P6SMB22A-E3/5B remains suitable for industrial and consumer applications where automotive qualification is not required.
What does the "-E3/5B" suffix indicate in P6SMB22A-E3/5B?
The "-E3" denotes RoHS-compliant, commercial-grade construction with matte tin-plated leads; "/5B" specifies packaging in 13-inch diameter plastic tape and reel containing 3200 units. This differs from "/52", which uses 7-inch reels with 750 units. Both share identical electrical and thermal specifications - the suffix solely defines environmental compliance and packaging format for the P6SMB22A-E3/5B.
Can the P6SMB22A-E3/5B be used in bidirectional configurations?
No, the P6SMB22A-E3/5B is strictly unidirectional. Bidirectional variants in the same series carry the "CA" suffix (e.g., P6SMB22CA). The P6SMB22A-E3/5B has a cathode band marking and conducts only in reverse avalanche mode; using it in bidirectional circuits would leave positive-going transients unprotected. Always verify polarity marking and datasheet designation before placement - the P6SMB22A-E3/5B is not interchangeable with CA-suffixed parts.
What is the thermal resistance junction-to-ambient (RθJA) for the P6SMB22A-E3/5B?
The P6SMB22A-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended pad layout (0.2" × 0.2" copper pads per terminal). This value assumes still air conditions and is critical for calculating allowable power dissipation at elevated ambient temperatures. Derating follows the curve in Figure 2 of the Vishay datasheet 88370; the P6SMB22A-E3/5B must be thermally managed accordingly in enclosed or high-temperature environments.
P6SMB22A-E3/5B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- 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 (SMBJ)
P6SMB22A-E3/5B FAQ
1.How can I place an order for P6SMB22A-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22A-E3/5B 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-E3/5B reliable?
The price and inventory of P6SMB22A-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22A-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB22A-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22A-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22A-E3/5B?
P6SMB22A-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22A-E3/5B 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-E3/5B?
For technical support, including P6SMB22A-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22A-E3/5B requirements.
6.How does Aetrix verify that P6SMB22A-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB22A-E3/5B 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-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB22A-E3/5B?
All P6SMB22A-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22A-E3/5B, 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-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB22A-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22A-E3/5B Tags
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