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Vishay General Semiconductor - Diodes Division P6SMB24AHE3/52
- Part No.:
- P6SMB24AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24AHE3/52.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P6SMB24AHE3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on power and signal lines. It features a 24 V standoff voltage (VWM), 25.2 V maximum breakdown voltage (VBR), 33.2 V clamping voltage at 18.1 A peak pulse current, and 600 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive-grade ECU protection, industrial sensor interfaces, and DC power rail surge suppression.
For engineers reviewing the P6SMB24AHE3/52 datasheet, P6SMB24AHE3/52 pinout, P6SMB24AHE3/52 application, or P6SMB24AHE3/52 equivalent, key selection criteria include its AEC-Q101 qualification, SMB (DO-214AA) package compatibility, unidirectional polarity with cathode band marking, and verified clamping performance under repetitive 0.01% duty cycle surges.
Technical Context
This TVS diode operates as a shunt-clamping device that remains high-impedance below 24 V and rapidly transitions to low-impedance conduction above its 25.2 V breakdown threshold. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ns), critical for protecting MOSFET gates and microcontroller I/O pins against ESD and inductive switching spikes.
Thermally, it sustains 150 °C maximum junction temperature with 100 °C/W junction-to-ambient thermal resistance when mounted on 5.0 mm × 5.0 mm copper pads. Its 100 A IFSM rating supports robust handling of 8.3 ms half-sine surge events common in automotive load-dump scenarios.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC bias margin for protected circuitry. |
| VBR (Breakdown Voltage) | 22.8 V min / 25.2 V max at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on during transient overvoltage events. |
| VC (Clamping Voltage) | 33.2 V at 18.1 A IPPM - Measured peak voltage across device during 10/1000 μs surge; directly limits stress on downstream ICs. |
| PPPM (Peak Pulse Power) | 600 W - Sustained energy absorption capability per single 10/1000 μs transient; enables protection against IEC 61000-4-5 Level 4 surges. |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 0.220" × 0.130" footprint; compatible with automated pick-and-place and reflow soldering. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including engine control units and body electronics per JESD22-A114 reliability testing. |
| Maximum Junction Temperature | 150 °C - Enables operation in under-hood environments and industrial enclosures without derating at ambient ≤85 °C. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking on one end. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H); terminals are matte tin-plated, solderable per J-STD-002 and JESD22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping loop when transient exceeds VBR. |
| Cathode | High-side connection point | Marked with band; connects to protected line (e.g., 24 V rail or signal input); conducts avalanche current to anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables single-device protection against severe transients like ISO 7637-2 Pulse 5a without external current sharing. |
| Glass passivated junction | Ensures long-term stability of leakage current and breakdown voltage under thermal cycling and humidity exposure. |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free reflow profiles without preconditioning or special handling requirements. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD), improving clamping fidelity for sensitive analog inputs. |
| AEC-Q101 qualified (HE3 suffix) | Validates reliability for automotive use cases including powertrain and ADAS subsystems with zero early-life failure risk. |
Applications
| Automotive Engine Control Unit (ECU) Power Input Protection | Industrial PLC Digital Input Module |
|---|---|
|
Use Scenario: Protects 24 V supply rail of engine control units against load dump transients up to 60 V and inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Shunt-clamping TVS diode placed between VIN and GND, activated within nanoseconds to clamp voltage to ≤33.2 V. Use Value: Prevents damage to MCU power management ICs and CAN transceivers by limiting transient overvoltage to safe levels defined in ISO 16750-2. |
Use Scenario: Shields 24 V digital input channels of programmable logic controllers from field-wiring induced surges and electrostatic discharge. IC Role / Device Role / Timing Role: Unidirectional TVS connected in parallel with optocoupler input, conducting only during positive-going transients on the signal line. Use Value: Maintains signal integrity and prevents false triggering while meeting IEC 61000-4-4 (EFT) and IEC 61000-4-5 (Surge) immunity requirements. |
| DC-DC Converter Output Rail Protection | Automotive Camera Module Power Line |
|
Use Scenario: Guards the 5 V or 12 V output of isolated DC-DC converters in infotainment systems against cross-talk and back-emf from adjacent switching regulators. IC Role / Device Role / Timing Role: Low-capacitance TVS placed at converter output capacitor node to suppress ringing and overshoot without affecting regulation bandwidth. Use Value: Reduces need for additional LC filtering by absorbing sub-microsecond transients, preserving output voltage stability under dynamic load changes. |
Use Scenario: Safeguards 12 V power input of rear-view or surround-view camera modules exposed to cable-borne surges in vehicle harnesses. IC Role / Device Role / Timing Role: AEC-Q101 qualified unidirectional TVS installed at connector entry point, with cathode tied to 12 V rail and anode to chassis ground. Use Value: Ensures uninterrupted video streaming during ignition events and meets OEM-specific EMC requirements for camera subsystems (e.g., GMW3172). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-E3/52 | Same VWM/VBR/VC specs but lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy transients; unsuitable for automotive load dump where 600 W is required. | Select P6SMB24AHE3/52 when 600 W surge handling and AEC-Q101 qualification are mandatory. |
| 1.5SMC24A | Same 24 V rating and 600 W rating, but larger SMC (DO-214AB) package (7.11 mm × 6.22 mm); no AEC-Q101 option available. | Requires PCB area increase; lacks automotive qualification documentation and traceability for Tier 1 programs. | Choose P6SMB24AHE3/52 for space-constrained automotive designs requiring certified reliability and SMB footprint compatibility. |
Compared with SMAJ24A-E3/52 and 1.5SMC24A, P6SMB24AHE3/52 uniquely delivers AEC-Q101 qualification in the compact SMB package with full 600 W surge capability - enabling drop-in replacement in automotive and industrial layouts where thermal performance, footprint, and compliance are jointly constrained.
Availability
P6SMB24AHE3/52 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input stages, and DC-DC converter output rail surge suppression requiring stable component supply, full traceability, and AEC-Q101 compliance.
Supply support for P6SMB24AHE3/52 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, rectifiers, and protection devices with emphasis on reliability, efficiency, and application-specific validation.
The P6SMB Series is engineered for high-energy transient suppression in automotive, industrial, and telecom infrastructure - delivering consistent clamping performance across temperature and lifetime while meeting stringent automotive qualification standards.
FAQ
What is the maximum clamping voltage of P6SMB24AHE3/52 under a 10/1000 μs surge?
The maximum clamping voltage (VC) of P6SMB24AHE3/52 is 33.2 V at 18.1 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per JEDEC standards and guarantees that downstream components connected to the protected line will not experience voltage stress exceeding 33.2 V during standardized surge events - a critical parameter for ensuring compatibility with 3.3 V or 5 V logic interfaces powered from a 24 V rail. The P6SMB24AHE3/52 maintains this clamping performance across its full operating temperature range.
Is P6SMB24AHE3/52 qualified for automotive applications?
Yes, P6SMB24AHE3/52 is AEC-Q101 qualified, as confirmed by the "HE3" suffix and Vishay's official documentation. This qualification covers stress tests including HTGB, HTRB, TCT, and mechanical shock, validating suitability for automotive powertrain, body electronics, and ADAS systems. The P6SMB24AHE3/52 is specifically rated for operation from −65 °C to +150 °C junction temperature and supports automotive-grade traceability and lot-control requirements - distinguishing it from commercial-grade variants like P6SMB24A-E3/52.
What does the "HE3" suffix indicate in P6SMB24AHE3/52?
The "HE3" suffix in P6SMB24AHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads compliant with J-STD-002 and JESD22-B102. It replaces the base "E3" commercial-grade suffix and adds automotive reliability validation, whisker resistance (JESD201 Class 2), and MSL Level 1 moisture sensitivity. This makes P6SMB24AHE3/52 distinct from non-HE3 variants - the "H" explicitly signals automotive qualification, while "E3" confirms RoHS compliance and commercial packaging format.
How does P6SMB24AHE3/52 differ from bidirectional versions like P6SMB24CA?
P6SMB24AHE3/52 is unidirectional, with polarity marked by a cathode band and intended for DC line protection where reverse voltage is blocked. In contrast, P6SMB24CA is bidirectional, symmetrical in both directions, and used for AC or floating signal line protection (e.g., RS-485). The P6SMB24AHE3/52 has a forward voltage drop (~3.5 V at 50 A) and supports IFSM = 100 A, whereas P6SMB24CA lacks forward conduction capability and is not rated for IFSM. Their VWM/VBR values also differ: P6SMB24AHE3/52 specifies VWM = 20.5 V, while P6SMB24CA lists VWM = 20.5 V bidirectionally - but only P6SMB24AHE3/52 is AEC-Q101 qualified.
What is the thermal resistance of P6SMB24AHE3/52, and how does it affect layout design?
P6SMB24AHE3/52 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 value assumes minimum recommended pad layout per Vishay's datasheet - underscoring the necessity of adhering to specified copper area and thermal vias for reliable 600 W surge handling. Exceeding 150 °C junction temperature risks parametric shift or failure; thus, PCB layout must allocate sufficient copper pour and avoid isolation gaps near the SMB footprint to maintain thermal integrity during repetitive surge events.
P6SMB24AHE3/52 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:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- 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)
P6SMB24AHE3/52 FAQ
1.How can I place an order for P6SMB24AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24AHE3/52 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 P6SMB24AHE3/52 reliable?
The price and inventory of P6SMB24AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB24AHE3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB24AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24AHE3/52?
P6SMB24AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24AHE3/52 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 P6SMB24AHE3/52?
For technical support, including P6SMB24AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24AHE3/52 requirements.
6.How does Aetrix verify that P6SMB24AHE3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB24AHE3/52 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 P6SMB24AHE3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB24AHE3/52?
All P6SMB24AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24AHE3/52, 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 P6SMB24AHE3/52 part is unused and in its original packaging.
Return procedure for P6SMB24AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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