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Vishay General Semiconductor - Diodes Division P6SMB24CA-E3/52
- Part No.:
- P6SMB24CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24CA-E3/52.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:1,496
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Product details
Overview
P6SMB24CA-E3/52 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMB (DO-214AA) package, rated for 24 V standoff voltage (VWM), 33.2 V clamping voltage (VC) at 18.1 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs waveform). It protects signal lines and power rails in automotive sensor units, industrial I/O interfaces, and telecom front-end circuits against ESD and inductive switching transients.
For engineers reviewing the P6SMB24CA-E3/52 datasheet, P6SMB24CA-E3/52 pinout, P6SMB24CA-E3/52 application, or P6SMB24CA-E3/52 equivalent, this device delivers verified bidirectional clamping performance, AEC-Q101 qualification readiness (via HE3/HM3 variants), low incremental surge resistance, and MSL Level 1 moisture sensitivity - critical for high-reliability PCB assembly and automotive-grade transient suppression design.
Technical Context
The P6SMB24CA-E3/52 operates as a bidirectional avalanche diode with symmetrical breakdown behavior in both polarities, enabling protection of AC-coupled or differential signal paths without polarity constraints. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), while the SMB package supports automated placement and meets UL 94 V-0 flammability requirements.
Thermal performance is defined by RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), with derating applied above TA = 25 °C per Figure 2. The device sustains repetitive 10/1000 μs pulses at 0.01% duty cycle and handles non-repetitive 8.3 ms half-sine surges up to 100 A (unidirectional only; not applicable to CA variant).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 20.5 V - Maximum continuous reverse voltage before conduction; defines safe operating window for protected circuitry. |
| VBR (Breakdown, min) | 22.8 V at 1.0 mA test current - Guaranteed avalanche initiation threshold under standardized DC conditions. |
| VC (Clamping, max) | 33.2 V at 18.1 A IPPM - Peak voltage seen by downstream components during 10/1000 μs transient; determines protection margin. |
| PPPM | 600 W - Peak transient energy absorption capability; enables robust defense against lightning-induced surges and load dump events. |
| IPPM | 18.1 A - Maximum non-repetitive surge current supported at VC; directly constrains PCB trace sizing and layout routing. |
| TJ max. | +150 °C - Maximum junction temperature; sets thermal design limits for board-level power dissipation and ambient operating range. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with JEDEC MS-012AC and IPC-7351B land patterns. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads; polarity-unmarked for bidirectional operation; meets J-STD-002 and JESD 22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No functional polarity distinction; either terminal serves as anode or cathode depending on transient polarity - enables single-device protection of AC or floating nodes. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-to-earth) in properly designed front-end stages. |
| Low clamping ratio (VC/VBR ≈ 1.46) | Minimizes overvoltage stress on downstream ICs such as RS-485 transceivers or microcontroller GPIOs. |
| MSL Level 1 (260 °C peak reflow) | Enables single-pass lead-free reflow assembly without pre-baking; reduces manufacturing complexity and cost. |
| Glass passivated junction | Ensures long-term stability of leakage current (<1.0 μA) and breakdown voltage across temperature and lifetime. |
| AEC-Q101 qualification path | HE3/HM3 variants available for automotive applications requiring validated reliability per stress-test protocols. |
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 transients and ESD in engine control modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, absorbing transients before they reach ASIC or MCU input pins. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-2 ±15 kV contact discharge without latch-up or parametric shift. |
Use Scenario: Safeguarding RS-485 transceiver inputs (A/B lines) in factory automation PLCs exposed to motor drive noise and cable coupling. IC Role / Device Role / Timing Role: Differential-line TVS pair (one per line) referenced to common ground, suppressing common-mode surges and asymmetrical spikes. Use Value: Limits clamped voltage to ≤33.2 V, ensuring transceiver survival beyond IEC 61000-4-4 Level 4 (4 kV EFT) and maintaining data integrity at 10 Mbps. |
| Telecom Line Card Surge Defense | Consumer USB Port ESD Clamp |
|
Use Scenario: Front-end protection of xDSL or Ethernet PHY interfaces on telecom line cards subjected to lightning-induced surges on copper pairs. IC Role / Device Role / Timing Role: Primary surge arrestor mounted at connector entry point, shunting energy before reaching transformer or PHY IC. Use Value: Absorbs 600 W peak power per line with <1 ns response, preventing damage to magnetics and PHY silicon during Telcordia GR-1089-CORE Level 3 testing. |
Use Scenario: ESD protection for USB 2.0 D+/D− lines in portable devices where space and capacitance are constrained. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp (CJ < 100 pF at 0 V) placed adjacent to USB connector to divert ±15 kV HBM events. Use Value: Clamps to 33.2 V within nanoseconds while adding <0.5 pF parasitic capacitance - preserves signal rise time and eye diagram compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA | Same VWM (20.5 V) and VC (33.2 V), but lower PPPM (400 W); SMA package (smaller footprint, higher RθJA = 150 °C/W). | Preferred for space-constrained consumer boards where 400 W surge margin suffices; less suitable for industrial 600 W requirement. | Select SMAJ24CA only if board area is critical and worst-case surge energy remains below 400 W. |
| 1.5SMC24CA | Identical electrical specs (VWM, VBR, VC, PPPM), but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm) and higher IFSM rating (200 A vs. N/A for bidirectional). | Better thermal dissipation for high-duty-cycle environments; used where mechanical robustness or legacy SMC land patterns exist. | Choose 1.5SMC24CA when enhanced thermal margin or compatibility with existing SMC layouts is required. |
Compared with SMAJ24CA and 1.5SMC24CA, the P6SMB24CA-E3/52 offers optimal balance of 600 W surge capability, SMB footprint compactness, and MSL Level 1 process compatibility - making it the preferred choice for new automotive and industrial designs targeting AEC-Q101 readiness and high-volume SMT assembly.
Availability
P6SMB24CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial RS-485 networks, telecom line cards, and consumer USB interface protection requiring stable component supply, RoHS-compliant sourcing, and consistent tape-and-reel delivery.
Supply support for P6SMB24CA-E3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series is engineered for high-energy transient suppression in automotive, industrial, and telecom systems, delivering standardized 600 W surge capability in compact SMB packages with AEC-Q101 qualification pathways.
FAQ
What is the clamping voltage of the P6SMB24CA-E3/52 under maximum rated surge current?
The P6SMB24CA-E3/52 has a maximum clamping voltage (VC) of 33.2 V when subjected to its rated peak pulse current (IPPM) of 18.1 A using the standard 10/1000 μs waveform. This value is measured per Figure 1 in the Vishay datasheet 88370 and defines the upper voltage limit imposed on protected circuitry during transient events. The P6SMB24CA-E3/52 maintains this clamping performance across its full operating temperature range of -65 °C to +150 °C.
Is the P6SMB24CA-E3/52 suitable for automotive applications?
The P6SMB24CA-E3/52 itself is RoHS-compliant and commercial-grade; however, Vishay offers AEC-Q101 qualified variants under ordering codes P6SMB24CAHE3_B and P6SMB24CAHM3_B (with "_B" suffix denoting AEC-Q101 qualification for VWM ≤ 220 V). While the P6SMB24CA-E3/52 shares identical electrical characteristics and SMB packaging, formal automotive qualification requires the HE3_B or HM3_B version. For production automotive use, specify the qualified variant rather than the P6SMB24CA-E3/52.
What is the standoff voltage (VWM) of the P6SMB24CA-E3/52, and how does it relate to system operating voltage?
The P6SMB24CA-E3/52 has a maximum reverse standoff voltage (VWM) of 20.5 V, meaning it remains non-conductive up to this DC or RMS voltage level. To ensure reliable operation, the system's normal operating voltage must be ≤80–90% of VWM - e.g., ≤16.4–18.5 V for 24 V nominal rails - allowing margin for tolerance, ripple, and temperature drift. Exceeding VWM risks increased leakage or premature clamping, degrading signal integrity or power efficiency in the protected circuit.
Does the P6SMB24CA-E3/52 have polarity markings, and how is it mounted on PCB?
No - the P6SMB24CA-E3/52 is a bidirectional TVS diode and carries no polarity marking (unlike unidirectional variants which feature a cathode band). Its terminals are functionally identical, allowing installation in either orientation on the PCB. Mounting uses standard SMB (DO-214AA) land pattern per JEDEC MS-012AC: 5.59 mm × 4.06 mm body with 2.18 mm minimum pad width and 5.59 mm reference length. The P6SMB24CA-E3/52 is compatible with lead-free reflow profiles up to 260 °C peak (MSL Level 1).
How does the P6SMB24CA-E3/52 compare to unidirectional P6SMB24A-E3/52 in terms of circuit protection capability?
The P6SMB24CA-E3/52 provides symmetrical clamping for both positive and negative transients, making it ideal for AC-coupled, differential, or floating signal lines (e.g., RS-485, CAN, audio). In contrast, the unidirectional P6SMB24A-E3/52 clamps only in reverse bias and conducts forward current like a rectifier - requiring external series blocking diodes for bidirectional protection. For any application involving bipolar transients or undefined signal polarity, the P6SMB24CA-E3/52 eliminates additional components and layout complexity while delivering identical VWM, VC, and PPPM ratings.
P6SMB24CA-E3/52 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-E3/52 FAQ
1.How can I place an order for P6SMB24CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24CA-E3/52 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 P6SMB24CA-E3/52 reliable?
The price and inventory of P6SMB24CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB24CA-E3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB24CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24CA-E3/52?
P6SMB24CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24CA-E3/52 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 P6SMB24CA-E3/52?
For technical support, including P6SMB24CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24CA-E3/52 requirements.
6.How does Aetrix verify that P6SMB24CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB24CA-E3/52 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 P6SMB24CA-E3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB24CA-E3/52?
All P6SMB24CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24CA-E3/52, 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 P6SMB24CA-E3/52 part is unused and in its original packaging.
Return procedure for P6SMB24CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB24CA-E3/52 Tags
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