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Vishay General Semiconductor - Diodes Division P6SMB24CAHE3_A/H
- Part No.:
- P6SMB24CAHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24CAHE3_A/H.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB24CAHE3_A/H 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 or power lines. It features a 24 V standoff voltage (VWM), 27.5 V minimum breakdown voltage (VBR), 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 - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB24CAHE3_A/H datasheet, P6SMB24CAHE3_A/H pinout, P6SMB24CAHE3_A/H application, or P6SMB24CAHE3_A/H equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification status, SMB package thermal resistance (RθJA = 100 °C/W), and compliance with J-STD-020 MSL level 1 reflow profile up to 260 °C peak.
Technical Context
This bidirectional TVS diode operates symmetrically across both polarities, delivering consistent clamping behavior during positive and negative transients without polarity marking. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), while low incremental surge resistance enables effective energy diversion under repetitive 0.01% duty cycle surges.
The device is rated for 150 °C maximum junction temperature and derates linearly above 25 °C ambient per Figure 2. Mounted on 0.2" × 0.2" copper pads, it achieves 600 W peak pulse power dissipation with a 10/1000 μs waveform and supports surge currents up to 18.1 A without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below system rail. |
| VBR (Breakdown Voltage) | 22.8 V to 25.2 V at 1.0 mA test current - Voltage at which device enters avalanche conduction; tight tolerance ensures predictable turn-on. |
| VC (Clamping Voltage) | 33.2 V at 18.1 A IPPM - Peak voltage seen by protected circuit during worst-case transient; determines required IC voltage margin. |
| PPPM (Peak Pulse Power) | 600 W with 10/1000 μs waveform - Energy-handling capacity for lightning or inductive-switching surges; validated per Fig. 1. |
| ID (Reverse Leakage) | ≤1.0 μA at 20.5 V - Minimal standby current draw; critical for low-power sensor and battery-backed circuits. |
| TJ max. | 150 °C - Maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments. |
| MSL Level | Level 1 per J-STD-020 - Supports standard reflow profiles up to 260 °C peak without moisture-related failure. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional construction means no polarity marking; terminals are symmetrical and interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient path | Either terminal serves as input/output for clamping; no cathode band marking required; enables placement flexibility on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces per stress test requirements. |
| 600 W peak pulse power | Handles IEC 61000-4-5 Level 4 surges (4 kV line-to-earth) without failure when properly mounted on recommended copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.31) | Minimizes overvoltage stress on downstream components - e.g., keeps 3.3 V or 5 V logic rails within safe limits during transients. |
| MSL Level 1 rating | Eliminates pre-bake requirement prior to SMT reflow, reducing manufacturing cost and process complexity. |
| Glass passivated junction | Ensures long-term stability of leakage current and breakdown voltage across temperature and lifetime cycling. |
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 ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt transients before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under ±25 V transients while drawing <1 μA at 20.5 V, preserving low-power operation of 12-bit ADC front-ends. |
Use Scenario: Safeguarding 24 V digital input modules in programmable logic controllers against inductive kickback from solenoid and relay coils. IC Role / Device Role / Timing Role: Fast-response transient suppressor installed across input terminals to clamp spikes up to 600 W without latch-up or degradation. Use Value: Enables reliable operation in harsh factory environments where repeated 100 V/100 ms transients occur, extending module MTBF beyond 10 years. |
| Telecom Line Interface | Consumer Power Adapter ESD Protection |
Use Scenario: Shielding Ethernet PHY interface lines (e.g., RJ45 magnetics secondary side) from ESD and lightning-induced surges in PoE-powered switches. IC Role / Device Role / Timing Role: Secondary-stage TVS deployed after common-mode chokes to suppress differential-mode transients on data pairs. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) to <33.2 V within <1 ns, preventing PHY IC damage without adding capacitance that degrades 100BASE-TX signal integrity. |
Use Scenario: Protecting USB-C and barrel jack inputs in wall adapters against user-induced ESD and AC line transients during plug insertion. IC Role / Device Role / Timing Role: Primary-level surge suppression on DC input rail upstream of primary-side controller and transformer. Use Value: Survives repeated 1.2/50 μs surges up to 1 kV (IEC 61000-4-5) while maintaining <1 μA leakage at 20.5 V, avoiding no-load power loss penalties. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA | Same VWM (20.5 V), lower PPPM (400 W), SMA package (higher RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive load dump or industrial relay switching. | Select when board space is constrained and surge energy is ≤400 W; verify thermal margin with smaller pad layout. |
| SMCJ24CA | Same VWM (20.5 V), higher PPPM (1500 W), larger SMC package (lower RθJA = 50 °C/W) | Overqualified for 600 W use cases; requires more PCB area and higher assembly cost. | Choose only if future design scaling to >1 kW surge immunity is anticipated; otherwise, P6SMB24CAHE3_A/H offers optimal size/power balance. |
Compared with SMAJ24CA and SMCJ24CA, P6SMB24CAHE3_A/H delivers the precise 600 W surge rating in the smallest footprint among AEC-Q101-qualified bidirectional SMB TVS diodes, enabling compact, automotive-grade protection without thermal or layout compromise.
Availability
P6SMB24CAHE3_A/H 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, AEC-Q101 qualification, and repeatable SMB package handling.
Supply support for P6SMB24CAHE3_A/H 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 passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets robust transient suppression in space-constrained, high-reliability applications - particularly automotive, industrial automation, and communications infrastructure where AEC-Q101 qualification and consistent clamping performance are mandatory.
FAQ
What does the "CA" suffix mean in P6SMB24CAHE3_A/H?
The "CA" suffix in P6SMB24CAHE3_A/H indicates a bidirectional configuration: the device provides symmetrical transient suppression for both positive and negative voltage excursions, with identical electrical characteristics in either polarity. This eliminates the need for polarity-aware placement during automated assembly and simplifies design for AC-coupled or differential signal lines. The P6SMB24CAHE3_A/H has no cathode marking, distinguishing it from unidirectional variants like P6SMB24AHE3_A/H.
Is P6SMB24CAHE3_A/H qualified for automotive applications?
Yes, P6SMB24CAHE3_A/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and documentation in Vishay's P6SMB datasheet (Rev. 09-Jan-2024, Doc. #88370). This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, making P6SMB24CAHE3_A/H suitable for under-hood and cabin electronics such as body control modules and sensor signal conditioning circuits where reliability under thermal and electrical stress is critical.
What is the maximum clamping voltage of P6SMB24CAHE3_A/H at rated surge current?
The maximum clamping voltage (VC) of P6SMB24CAHE3_A/H is 33.2 V at 18.1 A peak pulse current (IPPM) with a 10/1000 μs waveform, per the Electrical Characteristics table on page 2 of the Vishay datasheet. This value represents the highest voltage the protected circuit will experience during a worst-case transient event, and must be compared against the absolute maximum ratings of downstream ICs to ensure safe operation - for example, confirming compatibility with 36 V-tolerant I/O pins.
How does the SMB (DO-214AA) package of P6SMB24CAHE3_A/H affect thermal performance?
The SMB (DO-214AA) package of P6SMB24CAHE3_A/H has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per datasheet condition. This allows P6SMB24CAHE3_A/H to safely dissipate its 600 W peak pulse power in short bursts but requires careful PCB layout for sustained power handling. For continuous operation, derating curves in Figure 2 must be applied - e.g., at 75 °C ambient, the usable peak power drops to ~400 W, reinforcing the need for proper copper pour and thermal vias in high-duty-cycle applications.
Can P6SMB24CAHE3_A/H replace unidirectional TVS diodes in existing designs?
P6SMB24CAHE3_A/H can replace unidirectional TVS diodes only if the circuit topology and transient threat model support bidirectional clamping - for example, in AC signal paths, differential buses (like RS-485), or dual-rail power domains. It must not be substituted in DC-only unidirectional applications (e.g., 12 V supply rail protection) without verifying that reverse-polarity transients are possible and that downstream components tolerate symmetrical clamping. The absence of a cathode band on P6SMB24CAHE3_A/H also necessitates layout review to avoid unintended polarity-dependent behavior.
P6SMB24CAHE3_A/H 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):
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB24CAHE3_A/H FAQ
1.How can I place an order for P6SMB24CAHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24CAHE3_A/H 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 P6SMB24CAHE3_A/H reliable?
The price and inventory of P6SMB24CAHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB24CAHE3_A/H is usually 5 days.
3.What payment methods are accepted for P6SMB24CAHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24CAHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24CAHE3_A/H?
P6SMB24CAHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24CAHE3_A/H 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 P6SMB24CAHE3_A/H?
For technical support, including P6SMB24CAHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24CAHE3_A/H requirements.
6.How does Aetrix verify that P6SMB24CAHE3_A/H is sourced from the original manufacturer or authorized distributors?
All P6SMB24CAHE3_A/H 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 P6SMB24CAHE3_A/H meets industry standards.
7.What is the process for return or replacement of P6SMB24CAHE3_A/H?
All P6SMB24CAHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24CAHE3_A/H, 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 P6SMB24CAHE3_A/H part is unused and in its original packaging.
Return procedure for P6SMB24CAHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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