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Vishay General Semiconductor - Diodes Division P6SMB22CA-M3/52
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- Part No.:
- P6SMB22CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22CA-M3/52.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,952
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Product details
Overview
P6SMB22CA-M3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for clamping voltage transients on signal and power lines. It features a 22 V standoff voltage (VWM), 24.4–26.9 V breakdown voltage (VBR) at 1 mA, 30.6 V maximum clamping voltage (VC) at 19.6 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line surge suppression.
For engineers reviewing the P6SMB22CA-M3/52 datasheet, P6SMB22CA-M3/52 pinout, P6SMB22CA-M3/52 application, or P6SMB22CA-M3/52 equivalent, key selection criteria include bidirectional clamping symmetry, SMB (DO-214AA) package thermal performance, low leakage (<1 μA at 18.8 V), AEC-Q101 qualification eligibility via HM3 suffix, and compatibility with automated SMT assembly under J-STD-020 MSL level 1.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering identical clamping behavior across positive and negative transients without polarity marking. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling consistent response to repetitive ESD and lightning-induced surges up to 0.01% duty cycle.
The device uses a planar silicon junction structure optimized for fast response time (<1.0 ns) and low capacitance (typically <200 pF at 0 V), making it suitable for protecting high-speed data lines such as CAN, RS-485, and sensor analog outputs while maintaining signal integrity under transient stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 18.8 V - Maximum continuous reverse voltage before significant leakage; sets operating margin below clamping threshold. |
| VBR (Breakdown) | 24.4–26.9 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on during overvoltage events. |
| VC (Clamping) | 30.6 V at 19.6 A - Peak voltage seen by protected circuit during 10/1000 μs surge; defines worst-case stress level. |
| PPPM | 600 W - Surge energy handling capacity with standard 10/1000 μs waveform; supports IEC 61000-4-5 Level 3 compliance. |
| ID (Leakage) | <1.0 μA at 18.8 V - Minimal standby power loss and negligible loading on sensitive analog or digital inputs. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and industrial enclosures without derating. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height for high-density PCB layouts. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, rated MSL level 1 (peak reflow 260 °C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No functional distinction; either terminal accepts positive or negative transients equally - eliminates orientation errors during placement. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Handles IEC 61000-4-5 combined wave surges (e.g., 2 Ω source impedance, 12 A) without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.17) | Minimizes overvoltage exposure to downstream ICs - critical for 3.3 V or 5 V logic protection. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for automotive and industrial end equipment without sacrificing reliability. |
| 100% surge-tested | Each unit validated for full 600 W pulse capability - ensures batch-level consistency in field-deployed systems. |
| MSL level 1 rating | Supports single-reflow assembly without moisture sensitivity concerns - reduces manufacturing risk and cost. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN bus nodes and analog sensor outputs (e.g., temperature, pressure) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching PHY or MCU pins. Use Value: Maintains signal fidelity during 100 V/50 ms load dump events while limiting voltage to ≤30.6 V - preserving sensor accuracy and interface longevity. |
Use Scenario: Shielding 24 V DC digital input channels in programmable logic controllers against inductive switching transients from solenoids and relays. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between input line and common rail to clamp flyback spikes before optocoupler or Schmitt trigger input stage. Use Value: Prevents false triggering and latch-up in industrial control logic by clamping 400 V/2 Ω surges to safe levels within 1 ns response window. |
| Telecom Line Interface | Consumer Power Adapter Output |
|
Use Scenario: Safeguarding RS-485 transceivers and Ethernet PHYs in base station backhaul modules exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Primary front-end transient suppressor in multi-stage protection scheme - absorbs bulk surge energy ahead of GDT or polymer PTC. Use Value: Withstands repeated 6 kV/3 kA surges per IEC 61000-4-5 Ed.3, reducing field failure rates in unshielded telecom infrastructure. |
Use Scenario: Suppressing output overvoltage spikes caused by feedback loop instability or transformer ringing in AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Secondary-side TVS across regulated 5 V or 12 V output rails to prevent damage to USB ports or connected peripherals. Use Value: Limits output overshoot to ≤30.6 V during 100 ns ring events - avoids brownout resets and MOSFET gate oxide stress in downstream loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ22CA | Same VWM (18.8 V) and VC (30.6 V), but lower PPPM (400 W); SMA package (smaller thermal mass, higher RθJA). | Limited to lower-energy transients (e.g., ESD-only); unsuitable for IEC 61000-4-5 Level 3 or load dump. | Select when board space is constrained and surge threat level is limited to ±8 kV contact ESD (IEC 61000-4-2). |
| SMCJ22CA | Higher PPPM (1500 W), same VWM/VC; larger SMC (DO-214AB) package with improved thermal dissipation. | Overqualified for most 24 V system protection; adds 30% board area and higher cost. | Choose only when validating against severe surges (e.g., ISO 16750-2 12 V load dump with 100 ms duration) requiring >600 W margin. |
Compared with SMAJ22CA and SMCJ22CA, P6SMB22CA-M3/52 delivers optimal balance of surge robustness (600 W), compact SMB footprint, and production-ready halogen-free compliance - making it the preferred choice for cost-sensitive, high-volume automotive and industrial designs where 24 V rail protection is required without over-engineering.
Availability
P6SMB22CA-M3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line interface circuits requiring stable component supply, long-term lifecycle support, and traceable halogen-free sourcing.
Supply support for P6SMB22CA-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, and protection devices with emphasis on reliability, AEC-Q qualification, and application-specific optimization.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for robust surge handling, automated assembly compatibility, and compliance with evolving environmental standards including halogen-free and RoHS mandates.
FAQ
What is the clamping voltage of P6SMB22CA-M3/52 at its rated peak pulse current?
The P6SMB22CA-M3/52 has a maximum clamping voltage (VC) of 30.6 V at 19.6 A peak pulse current (IPPM), measured under the standard 10/1000 μs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in Vishay's datasheet revision 09-Jan-2024, page 2. The P6SMB22CA-M3/52 maintains this clamping performance across its full operating temperature range (−65 °C to +150 °C).
Is P6SMB22CA-M3/52 suitable for automotive applications requiring AEC-Q101 qualification?
The P6SMB22CA-M3/52 itself is not AEC-Q101 qualified; however, Vishay offers the functionally identical P6SMB22CAHM3_B/H variant (with HM3_B suffix) that carries full AEC-Q101 qualification for automotive use. The P6SMB22CA-M3/52 shares the same electrical characteristics, SMB package, and halogen-free construction, but requires validation per customer-specific automotive qualification protocols if used in safety-critical systems.
How does the bidirectional design of P6SMB22CA-M3/52 affect PCB layout and polarity considerations?
The P6SMB22CA-M3/52 has no polarity marking and operates identically in both directions, eliminating orientation constraints during PCB layout and automated placement. Unlike unidirectional TVS diodes, the P6SMB22CA-M3/52 can be mounted in either direction across differential or single-ended lines - simplifying design reuse, reducing BOM complexity, and preventing assembly errors in high-mix manufacturing environments.
What is the maximum leakage current specification for P6SMB22CA-M3/52 at its standoff voltage?
The P6SMB22CA-M3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated standoff voltage of 18.8 V (VWM), tested at TA = 25 °C. This ultra-low leakage ensures minimal power drain and signal loading on protected lines - especially critical in battery-powered sensor nodes and high-impedance analog measurement circuits where even nanoamp-level currents impact accuracy.
Can P6SMB22CA-M3/52 be used in parallel to increase surge current handling?
No - P6SMB22CA-M3/52 must not be paralleled for increased IPPM due to inherent VBR mismatch between units, which causes uneven current sharing and potential thermal runaway. For higher surge capability, select a single higher-rated device such as SMCJ22CA (1500 W) or implement staged protection with upstream GDTs. The P6SMB22CA-M3/52 is characterized and guaranteed only for standalone operation per Vishay's test conditions.
P6SMB22CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
P6SMB22CA-M3/52 FAQ
1.How can I place an order for P6SMB22CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22CA-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 P6SMB22CA-M3/52 reliable?
The price and inventory of P6SMB22CA-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 P6SMB22CA-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB22CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22CA-M3/52?
P6SMB22CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22CA-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 P6SMB22CA-M3/52?
For technical support, including P6SMB22CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22CA-M3/52 requirements.
6.How does Aetrix verify that P6SMB22CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB22CA-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 P6SMB22CA-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB22CA-M3/52?
All P6SMB22CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22CA-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 P6SMB22CA-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB22CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22CA-M3/52 Tags
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