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Vishay General Semiconductor - Diodes Division P6SMB24CA-E3/5B
- Part No.:
- P6SMB24CA-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24CA-E3/5B.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB24CA-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 24 V standoff voltage (VWM), 33.2 V maximum clamping voltage (VC) at 18.1 A peak pulse current (IPPM), and 600 W peak pulse power capability with a 10/1000 μs waveform - ideal for protecting MOSFETs, ICs, and sensor interfaces in industrial and automotive electronics.
For engineers reviewing the P6SMB24CA-E3/5B datasheet, P6SMB24CA-E3/5B pinout, P6SMB24CA-E3/5B application, or P6SMB24CA-E3/5B equivalent, key selection considerations include bidirectional clamping symmetry, low incremental surge resistance, AEC-Q101 qualification eligibility (via HE3/HM3 variants), RoHS compliance, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: during transient overvoltage events exceeding its breakdown threshold (22.8–25.2 V at 1 mA), it rapidly switches to low-impedance conduction to divert surge current away from downstream circuitry. Its bidirectional structure enables symmetric protection of AC-coupled or floating signal lines without polarity sensitivity.
Thermal performance is defined by a junction-to-ambient thermal resistance of 100 °C/W and a maximum operating junction temperature of +150 °C. The device uses a glass-passivated silicon junction and meets J-STD-020 MSL Level 1, supporting lead-free reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 20.5 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 22.8–25.2 V at 1 mA - Verified voltage range where device transitions from high- to low-impedance state; ensures predictable turn-on behavior. |
| VC (Clamping) | 33.2 V at 18.1 A - Maximum voltage seen across protected circuit during 10/1000 μs surge; directly limits stress on downstream components. |
| PPPM | 600 W - Peak pulse power handling per 10/1000 μs waveform; supports robust protection against IEC 61000-4-5 Level 4 surges. |
| IPPM | 18.1 A - Peak surge current capacity at rated clamping voltage; determines minimum trace width and layout clearance requirements. |
| TJ max. | +150 °C - Maximum junction temperature; enables reliable operation in under-hood automotive or enclosed industrial enclosures. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.0 mm × 5.0 mm copper pad recommendation; compatible with JEDEC-compliant pick-and-place. |
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 leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during positive half-cycle surge | One terminal of symmetrical PN junction; conducts when voltage exceeds VBR in either direction. |
| Cathode | Current entry point during negative half-cycle surge | Second terminal of symmetrical PN junction; identical electrical role to Anode due to bidirectional construction. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled, differential, or floating signal paths without polarity constraints or external diode pairing. |
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 surge immunity testing up to Level 4 (4 kV line-to-line, 2 kV line-to-ground) in properly designed layouts. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes voltage overshoot during transient events, reducing risk of latch-up or gate oxide damage in protected MOSFETs and ICs. |
| MSL Level 1 moisture sensitivity | Eliminates bake-out requirement prior to reflow; supports direct placement into high-volume SMT assembly lines. |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive applications; P6SMB24CA-E3/5B shares identical die and package design with qualified versions. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and inductive switching transients in 12 V/24 V vehicle systems. IC Role / Device Role: Bidirectional shunt clamp placed across signal pair or supply rail to limit transient voltage excursions. Use Value: Maintains signal integrity below 33.2 V during 18.1 A surges, preventing false triggering or damage to 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback and ESD in factory automation environments. IC Role / Device Role: Primary transient suppressor on 24 V DC input channels, mounted adjacent to connector entry points. Use Value: Clamps 600 W surges within 1 ns response time, enabling compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) standards. |
| Telecom Line Interface Protection | Consumer Power Adapter Output Protection |
|
Use Scenario: Shielding Ethernet PHYs and PoE injectors from lightning-induced surges on twisted-pair data lines in outdoor telecom equipment. IC Role / Device Role: Secondary-level TVS on differential pairs, used in conjunction with gas discharge tubes or polymer PTCs. Use Value: Symmetric 20.5 V standoff and 33.2 V clamping preserve common-mode rejection while limiting differential overvoltage to safe levels. |
Use Scenario: Preventing output overvoltage damage in wall-mounted AC/DC adapters caused by transformer saturation or rectifier failure. IC Role / Device Role: Shunt protector across secondary-side DC output rails (e.g., 24 V output), upstream of regulation circuitry. Use Value: Absorbs 600 W energy bursts without degradation, ensuring adapter reliability meets UL 62368-1 transient immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA | Same VWM (20.5 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for industrial surge testing requiring 600 W rating. | Select when board space is constrained and surge threat level is ≤ IEC 61000-4-5 Level 2. |
| SMCJ24CA | Same VWM (20.5 V), higher PPPM (1500 W), SMC package (larger footprint, lower RθJA = 50 °C/W) | Overqualified for 600 W needs; requires larger PCB area and may increase cost unnecessarily. | Select only when system-level testing demands >1000 W surge handling or extended thermal margin is critical. |
Compared with SMAJ24CA and SMCJ24CA, the P6SMB24CA-E3/5B delivers optimal balance of 600 W surge capability, SMB package manufacturability, and thermal performance - making it the preferred choice for mid-tier industrial and automotive applications where both reliability and SMT efficiency matter.
Availability
P6SMB24CA-E3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply, RoHS compliance, and consistent tape-and-reel delivery.
Supply support for P6SMB24CA-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, precision, and automotive-grade qualification.
The P6SMB Series was developed to deliver high-power, surface-mount transient suppression for harsh-environment applications - particularly targeting automotive, industrial control, and communications infrastructure where compact size, AEC-Q101 readiness, and repeatable clamping performance are essential.
FAQ
What is the clamping voltage of the P6SMB24CA-E3/5B under a 10/1000 μs surge?
The P6SMB24CA-E3/5B has a maximum clamping voltage (VC) of 33.2 V at 18.1 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per standard test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads), and represents the upper voltage limit imposed on protected circuitry during surge events. The P6SMB24CA-E3/5B maintains this clamping performance consistently across its operational temperature range.
Is the P6SMB24CA-E3/5B suitable for automotive applications?
The P6SMB24CA-E3/5B itself is RoHS-compliant and commercial-grade; however, Vishay offers AEC-Q101-qualified variants under ordering codes like P6SMB24CAHE3_B. While the P6SMB24CA-E3/5B shares identical die, package, and electrical characteristics with those qualified versions, it is not individually certified. For production automotive use, engineers should specify the HE3 or HM3 suffix variants - but the P6SMB24CA-E3/5B remains valid for prototyping, industrial, and non-safety-critical automotive subsystems.
What does the "CA" suffix indicate in P6SMB24CA-E3/5B?
The "CA" suffix in P6SMB24CA-E3/5B denotes a bidirectional configuration: the device provides symmetrical transient suppression for both polarities, with identical breakdown and clamping characteristics in either direction. This eliminates the need for polarity-aware layout or external series diodes. In contrast, "A"-suffixed parts (e.g., P6SMB24A) are unidirectional and require correct cathode orientation relative to the protected circuit's ground reference.
What is the thermal resistance of the P6SMB24CA-E3/5B, and how does it affect PCB layout?
The P6SMB24CA-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain reliability under repetitive surge conditions, designers must ensure adequate copper area and avoid excessive trace length between the P6SMB24CA-E3/5B and ground/power planes. Reducing pad size or using internal layers only increases RθJA, potentially derating surge capability.
How does the P6SMB24CA-E3/5B compare to unidirectional TVS diodes in terms of circuit protection?
The P6SMB24CA-E3/5B provides bidirectional clamping, making it inherently suitable for protecting AC signals, differential buses (e.g., RS-485, CAN), or floating nodes where voltage polarity reverses. Unidirectional TVS diodes like P6SMB24A require careful orientation and cannot suppress negative-going transients without additional components. For the same VWM and PPPM, the P6SMB24CA-E3/5B simplifies layout and improves robustness in mixed-polarity environments - a key advantage in modern sensor and communication interfaces.
P6SMB24CA-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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 18.1A
- 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)
P6SMB24CA-E3/5B FAQ
1.How can I place an order for P6SMB24CA-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24CA-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 P6SMB24CA-E3/5B reliable?
The price and inventory of P6SMB24CA-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 P6SMB24CA-E3/5B is usually 5 days.
3.What payment methods are accepted for P6SMB24CA-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24CA-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24CA-E3/5B?
P6SMB24CA-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24CA-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 P6SMB24CA-E3/5B?
For technical support, including P6SMB24CA-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24CA-E3/5B requirements.
6.How does Aetrix verify that P6SMB24CA-E3/5B is sourced from the original manufacturer or authorized distributors?
All P6SMB24CA-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 P6SMB24CA-E3/5B meets industry standards.
7.What is the process for return or replacement of P6SMB24CA-E3/5B?
All P6SMB24CA-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24CA-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 P6SMB24CA-E3/5B part is unused and in its original packaging.
Return procedure for P6SMB24CA-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB24CA-E3/5B Tags
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