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Vishay General Semiconductor - Diodes Division P6SMB22CAHE3_A/I
- Part No.:
- P6SMB22CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22CAHE3_A/I.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,978
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Product details
Overview
P6SMB22CAHE3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal or power lines. It features a 22 V standoff 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 - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the P6SMB22CAHE3_A/I datasheet, P6SMB22CAHE3_A/I pinout, P6SMB22CAHE3_A/I application, or P6SMB22CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMB (DO-214AA) package compatibility, and thermal resistance (RθJA = 100 °C/W) for board-level surge immunity design.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown behavior in both polarities due to its bidirectional construction. Its glass-passivated junction enables fast response time (<1 ns) and low incremental surge resistance, critical for suppressing ESD and inductive switching spikes without affecting signal integrity.
The P6SMB22CAHE3_A/I is rated for repetitive 10/1000 μs pulses at 0.01 % duty cycle and supports operation from −65 °C to +150 °C junction temperature. It meets J-STD-020 MSL Level 1 and is qualified to AEC-Q101, confirming suitability for automotive under-hood and infotainment subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 18.8 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown, min/max) | 20.9 V / 23.1 V at 1 mA - Tight 10 % tolerance ensures predictable turn-on across production lots. |
| VC (Clamping, max) | 30.6 V at 19.6 A - Limits transient voltage seen by downstream ICs (e.g., MCU GPIO or CAN transceivers) during surge events. |
| PPPM | 600 W - Sustains high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without failure when mounted per recommended pad layout. |
| IPPM | 19.6 A - Peak pulse current capability with 10/1000 μs waveform; directly determines protected line's surge withstand level. |
| TJ max. | +150 °C - Enables use in high-temperature environments such as engine control units or industrial motor drives. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient; informs derating requirements for sustained power dissipation. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); matte tin-plated terminals, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node for bidirectional conduction path | Connected to protected line (e.g., CAN_H or RS-485 A); symmetric with cathode for AC transient suppression. |
| Cathode | Current exit terminal in forward bias; common node for bidirectional conduction path | Connected to reference plane (e.g., ground or VCC); forms low-impedance shunt path during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain, body electronics, and ADAS sensor interfaces. |
| 600 W peak pulse power (10/1000 μs) | Withstands high-energy transients per ISO 7637-2 and IEC 61000-4-5 without degradation. |
| Glass passivated junction | Ensures stable leakage performance (<1 μA at VWM) and long-term reliability under thermal cycling. |
| MSL Level 1 (260 °C peak reflow) | Compatible with standard lead-free SMT assembly processes without moisture sensitivity concerns. |
| Bidirectional clamping symmetry | Equal VBR and VC in both directions eliminates need for orientation-aware placement on PCB. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine control modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤30.6 V, preventing ADC saturation or ESD damage while maintaining signal fidelity up to 22 V DC operating range. |
Use Scenario: Guarding differential data lines in factory automation PLCs against EFT and surge coupling from nearby motor drives. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS on RS-485 bus (A/B) to suppress common-mode and differential-mode transients. Use Value: Clamps 19.6 A surges within nanoseconds, preserving data integrity and avoiding bus lockup without adding capacitance-induced timing skew. |
| Consumer USB Power Delivery | Telecom DSL Line Interface |
Use Scenario: Safeguarding 5 V/9 V/15 V power rails in USB-C PD sink controllers against hot-swap and cable ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS placed between VBUS and ground to absorb ±15 kV contact ESD per IEC 61000-4-2. Use Value: Sub-31 V clamping ensures downstream PMIC and buck converters remain within absolute maximum ratings during fast-rising transients. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers subjected to lightning-induced surges on twisted-pair copper loops. IC Role / Device Role / Timing Role: Primary surge suppressor on line-side transformer secondary, coordinated with gas discharge tube (GDT) primary stage. Use Value: 600 W rating and 30.6 V clamping enable robust coordination with GDT holdover voltage, minimizing let-through energy to line driver ICs. |
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 footprint, higher RθJA). | Limited to lower-energy transients (e.g., IEC 61000-4-2 only); unsuitable for ISO 7637-2 Pulse 5a. | Select SMAJ22CA only if space-constrained and surge threat level is consumer-grade ESD only. |
| SMCJ22CA | Same VWM/VC, but PPPM = 1500 W; larger SMC (DO-214AB) package with lower RθJA (50 °C/W). | Supports higher surge repetition rates and longer pulse durations; requires more PCB area. | Choose SMCJ22CA when protecting high-reliability industrial power supplies or telecom line cards with multi-kW surge exposure. |
Compared with SMAJ22CA and SMCJ22CA, the P6SMB22CAHE3_A/I delivers optimal balance of 600 W surge handling, AEC-Q101 qualification, and SMB footprint-making it the preferred choice for automotive and industrial applications where board space, qualification, and mid-tier surge immunity must coexist.
Availability
P6SMB22CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, and consumer USB-C PD systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB22CAHE3_A/I 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, automotive qualification, and high-volume manufacturability.
The P6SMB Series is engineered for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, precise clamping, and surface-mount scalability are mandatory.
FAQ
What does the "CA" suffix indicate in P6SMB22CAHE3_A/I?
The "CA" suffix denotes a bidirectional configuration, meaning the P6SMB22CAHE3_A/I provides symmetrical clamping in both polarities - essential for protecting AC-coupled or differential signal lines like RS-485 or CAN without polarity-sensitive placement. This differs from unidirectional "A" variants that require correct anode/cathode orientation.
Is P6SMB22CAHE3_A/I suitable for automotive applications?
Yes, P6SMB22CAHE3_A/I is AEC-Q101 qualified (as indicated by the "HE3" suffix and "_B" revision code in ordering info), making it suitable for automotive applications including engine control units, body electronics, and ADAS sensor interfaces where reliability under thermal cycling and surge stress is critical.
What is the maximum clamping voltage of P6SMB22CAHE3_A/I and how is it applied in circuit design?
The maximum clamping voltage (VC) of P6SMB22CAHE3_A/I is 30.6 V at 19.6 A (10/1000 μs). In circuit design, this value sets the upper voltage limit imposed on protected components during surge events - ensuring downstream ICs (e.g., microcontrollers or transceivers) remain within their absolute maximum ratings.
How does the SMB (DO-214AA) package of P6SMB22CAHE3_A/I compare to SMA or SMC packages in thermal performance?
The SMB package of P6SMB22CAHE3_A/I has a typical RθJA of 100 °C/W, higher than SMC (50 °C/W) but lower than SMA (140 °C/W). This means P6SMB22CAHE3_A/I offers better thermal dissipation than SMAJ-series devices but requires careful pad layout (0.2" × 0.2" copper per terminal) to maintain safe junction temperatures under repetitive surges.
Does P6SMB22CAHE3_A/I have any special handling or assembly requirements?
P6SMB22CAHE3_A/I meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C, so no dry-pack or baking is required prior to SMT assembly. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, enabling reliable solder joint formation using standard lead-free processes.
P6SMB22CAHE3_A/I 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:
- Obsolete
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB22CAHE3_A/I FAQ
1.How can I place an order for P6SMB22CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22CAHE3_A/I 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 P6SMB22CAHE3_A/I reliable?
The price and inventory of P6SMB22CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB22CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB22CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22CAHE3_A/I?
P6SMB22CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22CAHE3_A/I 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 P6SMB22CAHE3_A/I?
For technical support, including P6SMB22CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22CAHE3_A/I requirements.
6.How does Aetrix verify that P6SMB22CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB22CAHE3_A/I 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 P6SMB22CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB22CAHE3_A/I?
All P6SMB22CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22CAHE3_A/I, 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 P6SMB22CAHE3_A/I part is unused and in its original packaging.
Return procedure for P6SMB22CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22CAHE3_A/I Tags
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