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Vishay General Semiconductor - Diodes Division P6SMB22A-M3/52
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- Part No.:
- P6SMB22A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22A-M3/52.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,465
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Product details
Overview
P6SMB22A-M3/52 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 and ICs in industrial power supplies.
For engineers reviewing the P6SMB22A-M3/52 datasheet, P6SMB22A-M3/52 pinout, P6SMB22A-M3/52 application, or P6SMB22A-M3/52 equivalent, key selection criteria include unidirectional polarity, halogen-free RoHS compliance (M3 suffix), 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This TVS diode operates as a clamping device in reverse-biased configuration, triggering when transient voltage exceeds VWM = 18.8 V and limiting downstream voltage to ≤30.6 V at 19.6 A. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), critical for suppressing ESD and inductive switching spikes.
The device is rated for 600 W peak pulse power under 10/1000 μs waveform at 0.01% duty cycle, with thermal resistance RθJA = 100 °C/W and RθJL = 20 °C/W. It meets J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance requirements, supporting reflow soldering up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 20.9 V / 23.1 V at 1.0 mA test current - defines reliable conduction onset range for overvoltage protection |
| VWM | 18.8 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 30.6 V at 19.6 A - clamped voltage seen by protected circuit during worst-case 600 W transient |
| PPPM | 600 W - peak pulse power handling capability with 10/1000 μs waveform, enabling robust surge immunity |
| IPPM | 19.6 A - maximum non-repetitive peak pulse current supported without degradation |
| TJ max | +150 °C - maximum junction temperature allowing operation in high-ambient industrial environments |
| Package | SMB (DO-214AA) - standardized surface-mount outline with cathode band marking, compatible with JEDEC MS-012 |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 flammability rating, 0.106 g unit weight. Cathode indicated by band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased terminal | Connected to protected line; conducts when transient exceeds VWM, shunting surge to ground |
| Anode (unbanded end) | Reference/ground terminal | Typically tied to system ground or low-impedance return path to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Enables suppression of high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure |
| Low clamping ratio (VC/VBR ≈ 1.32) | Minimizes overvoltage stress on downstream components during clamping event |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for industrial and automotive supply chains |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without preconditioning or special handling |
Applications
| Industrial Power Supply Protection | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Protecting 24 V DC input rails in programmable logic controllers (PLCs) against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between input rail and chassis ground to clamp transients before they reach DC-DC converters and microcontrollers. Use Value: Limits voltage to ≤30.6 V during 19.6 A surges, preventing latch-up or gate oxide damage in downstream 3.3 V/5 V logic. |
Use Scenario: Safeguarding LIN bus transceivers and sensor interfaces in BCMs exposed to battery voltage fluctuations and ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS on 12 V supply line, triggered only during >18.8 V events while remaining transparent during normal operation. Use Value: Maintains <1.0 μA leakage at 18.8 V, avoiding quiescent current impact on low-power sleep modes. |
| Telecom AC/DC Adapter Input Stage | Consumer Appliance Motor Drive Board |
|
Use Scenario: Secondary-side transient suppression on isolated 12 V output of wall adapters powering VoIP phones and routers. IC Role / Device Role / Timing Role: Fast-response clamping device across output rail and ground, activated within nanoseconds of surge arrival. Use Value: Achieves <1 ns response time and 30.6 V clamping, preserving integrity of Ethernet PHY and PoE controller ICs. |
Use Scenario: Overvoltage protection for H-bridge gate drivers in washing machine motor control boards subjected to relay bounce and back-EMF. IC Role / Device Role / Timing Role: Unidirectional TVS on half-bridge high-side supply rail, referenced to local ground plane. Use Value: Withstands 100 A IFSM (8.3 ms half-sine), surviving repeated motor startup surges without parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22A-E3/52 | Same VBR range (20.9–23.1 V), but lower PPPM = 400 W and higher VC = 35.5 V at 11.3 A | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-current inductive loads | Select when cost sensitivity outweighs peak surge margin and board space allows larger footprint for equivalent performance |
| 1.5SMC22A | Same VBR/VC specs but in larger SMC (DO-214AB) package; RθJA = 60 °C/W vs. 100 °C/W | Better thermal dissipation enables higher repetitive surge duty cycles in thermally constrained layouts | Choose when ambient temperature exceeds 85 °C or when derating for >0.01% duty cycle is required |
Compared with SMAJ22A-E3/52 and 1.5SMC22A, P6SMB22A-M3/52 delivers optimal balance of compact SMB footprint, 600 W surge capacity, and halogen-free compliance - making it preferred for space-constrained, high-reliability industrial and automotive modules where PCB real estate and environmental specs are critical.
Availability
P6SMB22A-M3/52 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body electronics, telecom adapters, and consumer appliance motor drives requiring stable component supply with halogen-free, RoHS-compliant sourcing.
Supply support for P6SMB22A-M3/52 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, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-power transient suppression in harsh environments - targeting industrial automation, automotive subsystems, and infrastructure equipment where robustness against ESD, lightning-induced surges, and inductive switching is mandatory.
FAQ
What is the maximum clamping voltage of P6SMB22A-M3/52 under peak pulse conditions?
The P6SMB22A-M3/52 exhibits a maximum clamping voltage (VC) of 30.6 V when subjected to its rated peak pulse current of 19.6 A using a 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88370 and represents the upper limit of voltage imposed on protected circuitry during transient events. The P6SMB22A-M3/52 maintains this clamping performance across its specified operating temperature range and is validated for repetitive surge duty cycles up to 0.01%.
Does P6SMB22A-M3/52 meet automotive qualification standards?
P6SMB22A-M3/52 is halogen-free and RoHS-compliant (M3 suffix) but is not AEC-Q101 qualified. For automotive-grade versions, Vishay offers P6SMB22AHM3_B/H or P6SMB22AHM3_B/I - which include the "HM3" and "_B" suffixes denoting AEC-Q101 qualification and halogen-free compliance. The P6SMB22A-M3/52 remains suitable for non-safety-critical automotive applications such as infotainment power rails where full AEC-Q101 is not mandated.
What is the reverse leakage current specification for P6SMB22A-M3/52 at its stand-off voltage?
At its maximum working voltage (VWM = 18.8 V), the P6SMB22A-M3/52 specifies a maximum reverse leakage current (ID) of 1.0 μA at TA = 25 °C. This low leakage ensures minimal power loss and avoids interference with low-current sensor circuits or battery-backed systems. The P6SMB22A-M3/52 maintains this specification across its full operating temperature range, with leakage increasing predictably per datasheet derating curves.
Can P6SMB22A-M3/52 be used in bidirectional configurations?
No - P6SMB22A-M3/52 is a unidirectional TVS diode, identified by its cathode band marking and specified electrical characteristics for single-polarity operation. For bidirectional protection, Vishay offers the P6SMB22CA-M3/52 variant (with "CA" suffix), which provides symmetrical clamping in both directions and no polarity marking. Using P6SMB22A-M3/52 in bidirectional applications risks improper clamping and potential device failure during negative transients.
What is the thermal resistance from junction to ambient for P6SMB22A-M3/52?
The typical thermal resistance from junction to ambient (RθJA) for P6SMB22A-M3/52 is 100 °C/W when mounted on minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes still air conditions and is critical for calculating junction temperature rise under sustained power dissipation. The P6SMB22A-M3/52 also has RθJL = 20 °C/W (junction to lead), supporting accurate thermal modeling in PCB layouts with localized copper pours or thermal vias.
P6SMB22A-M3/52 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-M3/52 FAQ
1.How can I place an order for P6SMB22A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22A-M3/52 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-M3/52 reliable?
The price and inventory of P6SMB22A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22A-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB22A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22A-M3/52?
P6SMB22A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22A-M3/52 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-M3/52?
For technical support, including P6SMB22A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22A-M3/52 requirements.
6.How does Aetrix verify that P6SMB22A-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB22A-M3/52 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-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB22A-M3/52?
All P6SMB22A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22A-M3/52, 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-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB22A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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