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Vishay General Semiconductor - Diodes Division P6SMB22CA-E3/5B
- Part No.:
- P6SMB22CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB22CA-E3/5B.pdf
- Description:
- TVS DIODE 18.8VWM 30.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,822
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Product details
Overview
P6SMB22CA-E3/5B from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, 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), 33.2 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-E3/5B datasheet, P6SMB22CA-E3/5B pinout, P6SMB22CA-E3/5B application, or P6SMB22CA-E3/5B equivalent, this page delivers verified electrical parameters, bidirectional clamping behavior, SMB package thermal and mechanical data, AEC-Q101 qualification status, and real-world design context for transient immunity validation in harsh environments.
Technical Context
The P6SMB22CA-E3/5B operates as a symmetrical bidirectional TVS, with identical clamping characteristics in both polarities - enabling robust protection of AC-coupled or differential signal paths without polarity sensitivity. Its glass-passivated junction ensures stable leakage (<1 µA at 18.8 V) and fast response time (<1 ns), while low incremental surge resistance supports consistent clamping under repetitive transients.
Rated for 150 °C maximum junction temperature and compliant with J-STD-020 MSL Level 1 (peak reflow 260 °C), it sustains operation in high-temperature automotive and industrial PCB assemblies. The device meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes; the -E3/5B variant is RoHS-compliant commercial grade with matte tin-plated leads solderable per J-STD-002.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 22 V - Maximum continuous reverse voltage before significant conduction; defines operating margin below clamping threshold. |
| VBR (Breakdown) | 24.4–26.9 V at 1 mA - Guaranteed avalanche onset range; ensures predictable turn-on during overvoltage events. |
| VC (Clamping) | 33.2 V at 19.6 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for IC-level stress limits. |
| PPPM | 600 W - Sustained transient energy absorption capacity; enables protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω). |
| IPPM | 19.6 A - Peak surge current handled at rated clamping voltage; determines minimum trace width and layout robustness. |
| TJ max. | 150 °C - Maximum junction temperature; supports operation in under-hood automotive or enclosed industrial enclosures. |
| RθJA | 100 °C/W - Thermal resistance junction-to-ambient on standard 0.2" × 0.2" copper pads; informs derating above 25 °C ambient. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with UL 94 V-0 flammability rating. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); cathode band omitted for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Bidirectional terminals - interchangeable; no polarity marking required; enables placement across AC signals or floating buses. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Supports IEC 61000-4-5 surge immunity up to 1 kV open-circuit voltage in 2 Ω source impedance systems. |
| Low clamping ratio (VC/VBR ≈ 1.3) | Minimizes overvoltage stress on downstream MOSFETs or RS-485 transceivers during ESD or lightning-induced transients. |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without moisture-related popcorning or delamination risks. |
| Glass-passivated junction | Ensures stable leakage current (<1 µA at VWM) and long-term reliability in humid or thermally cycled environments. |
| RoHS-compliant matte tin plating | Guarantees solderability per J-STD-002 and whisker resistance per JESD 201 Class 2 for high-reliability production. |
Applications
| Automotive Sensor Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching signal conditioning ICs. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 1/2a/5a stress while preserving <1 µA leakage at 22 V system rail. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., MAX1487, SN65HVD72) in factory automation PLCs exposed to motor drive noise and ground bounce. IC Role / Device Role / Timing Role: Common-mode transient suppressor across A/B differential pair and GND, limiting common-mode voltage excursion to ≤33.2 V. Use Value: Prevents transceiver latch-up or permanent damage during 4 kV EFT bursts (IEC 61000-4-4) without adding propagation delay. |
| Telecom Line Interface | Consumer Power Adapter Input |
|
Use Scenario: Surge protection on POTS or DSL line interface circuits subjected to lightning-induced longitudinal surges per ITU-T K.20/K.21. IC Role / Device Role / Timing Role: Primary protection device upstream of hybrid transformers and line drivers, absorbing >90% of 10/700 µs threat energy. Use Value: Achieves 600 W dissipation with <1 ns response, ensuring secondary protection (e.g., MOV + gas discharge tube) sees only residual clamped voltage. |
Use Scenario: Secondary-side transient suppression on 24 V DC input rails of smart home hubs and IoT gateways powered by wall adapters. IC Role / Device Role / Timing Role: Fast-acting clamp parallel to bulk capacitor, suppressing ringing and overshoot caused by adapter hot-plug or cable inductance. Use Value: Limits voltage excursions to 33.2 V during 100 ns rise-time spikes, protecting 3.3 V/5 V LDOs and microcontrollers without crowbar action. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22CA | Same SMB package, identical VWM/VBR/VC, but rated for 600 W with tighter VBR tolerance (±5% vs ±10% for P6SMB22CA); higher IPPM (20.0 A). | Preferred where tighter parametric control is required for compliance testing repeatability (e.g., automotive OEM PPAP submissions). | Select SMBJ22CA when statistical process control and reduced VBR spread are critical; P6SMB22CA-E3/5B remains optimal for cost-sensitive industrial designs. |
| 1.5SMC22CA | Higher-power 1500 W variant in larger SMC (DO-214AB) package; same VWM/VBR/VC specs but 44.4 A IPPM and 200 °C TJ max. | Suitable for primary-side AC line protection or high-energy surge zones where PCB space allows larger footprint. | Choose 1.5SMC22CA only if system-level surge tests exceed 600 W capability; P6SMB22CA-E3/5B provides optimal density for board-edge or IC-proximate placement. |
Compared with SMBJ22CA and 1.5SMC22CA, the P6SMB22CA-E3/5B delivers best-in-class power density for mid-tier surge requirements - balancing 600 W clamping, SMB footprint, and commercial-grade cost structure without sacrificing AEC-Q101 availability via HE3 variants.
Availability
P6SMB22CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial RS-485 networks, telecom line protection, and consumer power adapter inputs requiring stable component supply across extended production lifecycles.
Supply support for P6SMB22CA-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, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and automotive-grade qualification.
The P6SMB Series targets cost-effective, high-volume transient protection in space-constrained applications - engineered for automated SMT assembly, thermal resilience, and compatibility with lead-free reflow profiles across consumer, industrial, and automotive segments.
FAQ
What is the clamping voltage of P6SMB22CA-E3/5B at its rated peak pulse current?
The P6SMB22CA-E3/5B has a maximum clamping voltage (VC) of 33.2 V at 19.6 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in Vishay document 88370 and defines the upper voltage limit imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
Is P6SMB22CA-E3/5B suitable for automotive applications?
The P6SMB22CA-E3/5B itself is RoHS-compliant commercial grade; however, Vishay offers AEC-Q101 qualified versions under ordering codes P6SMB22CAHE3_B and P6SMB22CAHM3_B (with "_B" suffix). These variants undergo stress testing per AEC-Q101 Rev D and are approved for use in automotive powertrain, body electronics, and ADAS modules - while P6SMB22CA-E3/5B remains appropriate for non-safety-critical infotainment or accessory systems.
What is the thermal resistance of P6SMB22CA-E3/5B, and how does it affect layout?
The P6SMB22CA-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This requires careful PCB layout: minimum pad area must be maintained, and thermal vias should be added beneath pads if ambient temperatures exceed 75 °C to avoid exceeding the 150 °C TJ limit during repetitive surge events.
How does the bidirectional nature of P6SMB22CA-E3/5B impact its use in DC circuits?
The P6SMB22CA-E3/5B functions identically in both directions, making it ideal for AC-coupled or floating signal lines. In DC applications, it protects against both positive and negative transients - for example, on a 24 V rail, it clamps overvoltage above +33.2 V and undervoltage below –33.2 V relative to ground. No polarity orientation is needed during placement, simplifying assembly and eliminating risk of reverse installation.
What is the leakage current specification for P6SMB22CA-E3/5B at its standoff voltage?
At the 22 V standoff voltage (VWM), the P6SMB22CA-E3/5B exhibits a maximum reverse leakage current (ID) of 1.0 µA at 25 °C, per Table 1 in Vishay document 88370. This ultra-low leakage ensures minimal power loss in battery-powered or high-impedance sensor circuits, and remains stable across temperature due to the device's glass-passivated junction construction.
P6SMB22CA-E3/5B 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:
- -
- 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 (SMB)
P6SMB22CA-E3/5B FAQ
1.How can I place an order for P6SMB22CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB22CA-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 P6SMB22CA-E3/5B reliable?
The price and inventory of P6SMB22CA-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 P6SMB22CA-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB22CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB22CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB22CA-E3/5B?
P6SMB22CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB22CA-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 P6SMB22CA-E3/5B?
For technical support, including P6SMB22CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB22CA-E3/5B requirements.
6.How does Aetrix verify that P6SMB22CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB22CA-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 P6SMB22CA-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB22CA-E3/5B?
All P6SMB22CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB22CA-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 P6SMB22CA-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB22CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB22CA-E3/5B Tags
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Diodes Incorporated
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