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Vishay General Semiconductor - Diodes Division P6SMB24CAHM3/I
- Part No.:
- P6SMB24CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24CAHM3/I.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,193
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Product details
Overview
P6SMB24CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on signal or power lines. It features a 24 V standoff voltage (VWM), 26.7 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 (PPPM) capability with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB24CAHM3/I datasheet, P6SMB24CAHM3/I pinout, P6SMB24CAHM3/I application, or P6SMB24CAHM3/I equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification status, halogen-free RoHS compliance, thermal resistance (RθJA = 100 °C/W), and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical reverse/forward conduction behavior due to its bidirectional structure. Its glass-passivated junction enables fast response time (<1 ns), low incremental surge resistance, and stable clamping under repetitive 0.01% duty-cycle surges.
The P6SMB24CAHM3/I is rated for -65 °C to +150 °C operating junction temperature, meets MSL level 1 per J-STD-020 (peak reflow 260 °C), and uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 24 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for protected line. |
| VBR (Breakdown) | 26.7–29.5 V at 1 mA - Voltage at which device transitions into avalanche conduction; ensures reliable turn-on during transients. |
| VC (Clamping) | 33.2 V at 18.1 A IPPM - Peak voltage seen by downstream circuit during worst-case 10/1000 μs surge; determines protection margin for 3.3 V/5 V/24 V logic. |
| PPPM | 600 W - Peak transient energy absorption capacity with standard 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 immunity designs. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on minimal PCB pad layout; informs derating above 25 °C ambient. |
| Package | SMB (DO-214AA) - Surface-mount outline with 0.220" × 0.130" footprint; compatible with standard pick-and-place and reflow processes. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with UL 94 V-0 flammability rating; cathode/anode terminals are unmarked for bidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (either polarity) | One of two symmetrical terminals; accepts surge current in either direction during overvoltage events. |
| Cathode | Transient current exit (either polarity) | Second symmetrical terminal; completes low-impedance path to ground or rail during clamping action. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| AEC-Q101 qualified | Validated for automotive electronics use including engine control units and body modules requiring reliability under thermal cycling and vibration. |
| Halogen-free & RoHS-compliant | Meets environmental compliance requirements for industrial and consumer end equipment with HM3 suffix. |
| 600 W peak pulse power | Supports robust protection against lightning-induced surges and inductive switching spikes in 24 V systems. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; simplifies manufacturing logistics. |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across differential or single-ended signal lines upstream of interface ICs. Use Value: Limits transient voltage to ≤33.2 V, preserving integrity of 5 V or 3.3 V receiver inputs while surviving repeated 600 W surges. |
Use Scenario: Safeguarding 24 V digital input cards in programmable logic controllers against field-wiring induced transients and relay coil flyback. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor across input terminals to shunt surge energy before reaching optocoupler or microcontroller GPIO. Use Value: Clamps 24 V line excursions to 33.2 V within nanoseconds, preventing latch-up or permanent damage to isolation components. |
| Telecom Power Rail Protection | Consumer Appliance Motor Control |
Use Scenario: Guarding 24 V or 48 V DC power feeds in telecom base station backplanes from induced surges during lightning events. IC Role / Device Role / Timing Role: Standoff-rated TVS placed between power rail and chassis ground to divert common-mode transients. Use Value: Maintains 24 V system uptime by absorbing up to 600 W pulses without degradation, meeting IEC 61000-4-5 requirements. |
Use Scenario: Shielding MCU-based motor drivers in washing machines or HVAC systems from commutation spikes generated by brushed DC motors. IC Role / Device Role / Timing Role: Bidirectional suppressor across H-bridge supply rails to clamp both positive and negative flyback voltages. Use Value: Prevents gate oxide failure in MOSFETs by limiting rail overshoot to 33.2 V during rapid motor turn-off. |
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 (24 V), lower PPPM (400 W), SMA package (smaller footprint, higher RθJA = 140 °C/W). | Limited to lower-energy transients; less suitable for IEC 61000-4-5 Level 4 or automotive load dump. | Select when board space is constrained and surge energy is below 400 W. |
| SMCJ24CA | Same VWM (24 V), higher PPPM (1500 W), larger SMC package (DO-214AB), RθJA = 40 °C/W. | Overqualified for 600 W needs but offers superior thermal margin and surge endurance in high-reliability 24 V systems. | Select when long-term reliability under repeated surges or elevated ambient temperatures is critical. |
Compared with SMAJ24CA and SMCJ24CA, the P6SMB24CAHM3/I delivers balanced performance: sufficient 600 W surge handling in a compact SMB footprint with AEC-Q101 qualification and halogen-free compliance - making it optimal for cost-sensitive, volume automotive and industrial designs where space and regulatory alignment matter.
Availability
P6SMB24CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom power supplies, and appliance motor controllers requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB24CAHM3/I 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 and application-specific optimization.
The P6SMB Series targets high-volume transient protection in automotive, industrial, and telecom systems - engineered for AEC-Q101 compliance, automated assembly, and consistent clamping performance across temperature and lifetime.
FAQ
What does the "CA" suffix indicate in P6SMB24CAHM3/I?
The "CA" suffix denotes a bidirectional configuration, meaning the P6SMB24CAHM3/I provides symmetrical clamping for voltage transients of either polarity. Unlike unidirectional variants (e.g., P6SMB24AHM3/I), it has no cathode marking and functions identically in both directions - essential for protecting AC-coupled or floating signal paths where polarity is undefined.
Is P6SMB24CAHM3/I qualified for automotive applications?
Yes, the P6SMB24CAHM3/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It is validated for use in automotive environments including engine control, body electronics, and ADAS sensor interfaces, supporting operating junction temperatures from -65 °C to +150 °C and passing required stress tests.
What is the maximum clamping voltage of P6SMB24CAHM3/I and how is it measured?
The maximum clamping voltage (VC) of the P6SMB24CAHM3/I is 33.2 V, measured at a peak pulse current (IPPM) of 18.1 A using the standardized 10/1000 μs double-exponential waveform. This value represents the highest voltage imposed on the protected circuit during worst-case transient conditions and is guaranteed across the full operating temperature range.
How does the SMB (DO-214AA) package of P6SMB24CAHM3/I compare to SMA or SMC packages?
The SMB package of the P6SMB24CAHM3/I offers a middle-ground solution: larger than SMA (DO-214AC) for better power handling (600 W vs. 400 W), yet smaller than SMC (DO-214AB) for tighter board layouts. Its RθJA of 100 °C/W balances thermal performance and footprint - ideal for applications needing more robustness than SMA but less bulk than SMC.
Does P6SMB24CAHM3/I require a heatsink for standard operation?
No, the P6SMB24CAHM3/I is designed for operation without an external heatsink under typical conditions. Its 5.0 W steady-state power dissipation (PD) and 100 °C/W junction-to-ambient thermal resistance assume mounting on 0.2" × 0.2" copper pads per terminal. Heatsinking is unnecessary unless sustained high-duty-cycle surges or ambient temperatures exceed 50 °C are expected.
P6SMB24CAHM3/I 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:
- -
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB24CAHM3/I FAQ
1.How can I place an order for P6SMB24CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24CAHM3/I 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 P6SMB24CAHM3/I reliable?
The price and inventory of P6SMB24CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB24CAHM3/I is usually 5 days.
3.What payment methods are accepted for P6SMB24CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24CAHM3/I?
P6SMB24CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24CAHM3/I 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 P6SMB24CAHM3/I?
For technical support, including P6SMB24CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24CAHM3/I requirements.
6.How does Aetrix verify that P6SMB24CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P6SMB24CAHM3/I 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 P6SMB24CAHM3/I meets industry standards.
7.What is the process for return or replacement of P6SMB24CAHM3/I?
All P6SMB24CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24CAHM3/I, 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 P6SMB24CAHM3/I part is unused and in its original packaging.
Return procedure for P6SMB24CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB24CAHM3/I Tags
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