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Vishay General Semiconductor - Diodes Division P6SMB24CAHM3_B/I
- Part No.:
- P6SMB24CAHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24CAHM3_B/I.pdf
- Description:
- 600W,24V 5%,BIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:2,081
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Product details
Overview
P6SMB24CAHM3_B/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 and power lines. It features 24 V standoff voltage (VWM), 33.2 V maximum clamping voltage at 18.1 A peak pulse current, and 600 W peak pulse power 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_B/I datasheet, P6SMB24CAHM3_B/I pinout, P6SMB24CAHM3_B/I application, or P6SMB24CAHM3_B/I equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, and compatibility with automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamping protector with symmetrical breakdown in both directions due to its bidirectional construction. Its glass-passivated junction ensures stable avalanche characteristics and low incremental surge resistance, enabling fast response to ESD and lightning-induced transients.
The P6SMB24CAHM3_B/I is rated for 150 °C maximum junction temperature and exhibits a typical thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead), supporting reliable operation under repetitive surge conditions when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 20.5 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating window for protected circuitry. |
| VBR (Breakdown Voltage) | 22.8 V to 25.2 V at 1 mA - Voltage at which avalanche conduction initiates; ensures predictable turn-on during overvoltage events. |
| VC (Clamping Voltage) | 33.2 V at 18.1 A IPPM - Peak voltage seen by downstream components during 10/1000 μs transient; critical for IC-level protection margin. |
| PPPM (Peak Pulse Power) | 600 W - Maximum transient energy absorption capability with standard 10/1000 μs waveform; supports IEC 61000-4-5 compliance testing. |
| TJ max. | 150 °C - Maximum allowable junction temperature; enables use in under-hood automotive and high-ambient industrial environments. |
| MSL Level | Level 1 per J-STD-020 - No floor life limitation or bake requirement prior to reflow; simplifies manufacturing handling. |
| AEC-Q101 Qualified | Yes - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per AEC specification. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. Bidirectional construction means no polarity marking; both terminals are electrically symmetric.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals serve identical roles in bidirectional clamping; connected across protected line and ground or between differential lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or differential signal lines without polarity concerns - e.g., CAN bus, RS-485, or sensor bridges. |
| 600 W peak pulse power | Withstands high-energy surges such as ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Combination Wave (1.2/50 μs + 8/20 μs) without degradation. |
| AEC-Q101 qualification | Validated for automotive electronics including engine control units, body controllers, and ADAS sensor interfaces requiring long-term field reliability. |
| Low profile SMB package | Height ≤ 2.2 mm enables compact PCB layouts in space-constrained modules like ECUs and motor drivers. |
| MSL Level 1 rating | Eliminates pre-reflow baking and floor-life tracking - reduces production overhead in high-volume SMT lines. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure or temperature sensors in engine bay environments exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between sensor output and microcontroller ADC input to limit transient voltage excursions. Use Value: Maintains signal integrity below 33.2 V clamping threshold while surviving repeated 600 W pulses per ISO 7637-2. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) modules subject to field-wiring induced surges. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor across input terminal and common rail to shunt inductive switching spikes. Use Value: Prevents false triggering or latch-up in optocoupler input stages by clamping transients within 1 ns response time. |
| Telecom Line Interface | Consumer Appliance Motor Control |
Use Scenario: Shielding RS-485 transceiver pins in building automation gateways against ESD and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Differential-mode TVS pair applied across A/B bus lines to suppress common-mode and differential transients simultaneously. Use Value: Ensures >15 kV ESD immunity (IEC 61000-4-2) and 1 kV surge immunity (IEC 61000-4-5) without signal distortion. |
Use Scenario: Protecting half-bridge gate drivers in smart appliance motor inverters from cross-conduction-induced voltage spikes during PWM switching. IC Role / Device Role / Timing Role: Clamp placed across high-side and low-side driver supply rails to absorb shoot-through energy. Use Value: Limits rail collapse to ≤33.2 V during 18.1 A transient, preserving gate oxide integrity and preventing unintended FET turn-on. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA | 400 W PPPM rating, SMA package (smaller footprint, higher RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for ISO 7637-2 Pulse 5a load dump simulation | Select when board space is constrained and surge energy is <400 W. |
| SMCJ24CA | 1500 W PPPM rating, SMC package (larger footprint, lower RθJA = 40 °C/W) | Overqualified for 600 W requirements; requires larger PCB area and higher assembly cost | Select when future-proofing against higher surge standards or extended thermal derating is needed. |
Compared with SMAJ24CA and SMCJ24CA, the P6SMB24CAHM3_B/I delivers optimal balance of 600 W surge handling, AEC-Q101 qualification, MSL Level 1 manufacturability, and SMB footprint - making it the preferred choice for cost-sensitive, automotive-qualified, medium-energy protection designs.
Availability
P6SMB24CAHM3_B/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, and telecom interface protection requiring stable component supply and long-term lifecycle support.
Supply support for P6SMB24CAHM3_B/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, TVS devices, and power MOSFETs with emphasis on reliability and application-specific performance.
The P6SMB Series targets high-reliability transient suppression in automotive, industrial, and communications systems - engineered for robust clamping, automated assembly compatibility, and AEC-Q101 compliance out-of-the-box.
FAQ
What does the "CA" suffix indicate in P6SMB24CAHM3_B/I?
The "CA" suffix denotes a bidirectional configuration - meaning the P6SMB24CAHM3_B/I provides symmetrical clamping in both polarities, unlike unidirectional variants ending in "A". This makes the P6SMB24CAHM3_B/I ideal for protecting AC signals, differential buses, or circuits where voltage polarity reversal may occur during transients.
Is P6SMB24CAHM3_B/I qualified for automotive applications?
Yes, the P6SMB24CAHM3_B/I carries AEC-Q101 qualification, confirmed by the "HM3_B" suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It has undergone stress testing including temperature cycling, highly accelerated life testing (HALT), and ESD validation per AEC-Q101 Rev D, making it suitable for under-hood and chassis-mounted automotive electronics.
What is the maximum clamping voltage of P6SMB24CAHM3_B/I and how is it measured?
The P6SMB24CAHM3_B/I has a maximum clamping voltage (VC) of 33.2 V, measured at 18.1 A peak pulse current (IPPM) using the standard 10/1000 μs double-exponential waveform. This value represents the highest voltage imposed on protected circuitry during worst-case transient events and is guaranteed across the full operating temperature range.
How does the SMB (DO-214AA) package of P6SMB24CAHM3_B/I compare to SMA or SMC packages?
The SMB package of P6SMB24CAHM3_B/I offers a middle-ground solution: larger than SMA (DO-214AC) for better thermal dissipation and surge handling than 400 W devices, yet smaller than SMC (DO-214AB) to save PCB area. With RθJA = 100 °C/W and 600 W PPPM, the P6SMB24CAHM3_B/I delivers superior power density versus SMA while maintaining compactness versus SMC.
Can P6SMB24CAHM3_B/I be used in place of unidirectional TVS diodes like P6SMB24AHM3_B/I?
No - the P6SMB24CAHM3_B/I is strictly bidirectional and lacks polarity marking, whereas P6SMB24AHM3_B/I is unidirectional with cathode band identification. Substituting them requires circuit review: bidirectional use is mandatory for AC or floating lines, while unidirectional types are required for DC rail-to-ground protection where forward conduction must be blocked.
P6SMB24CAHM3_B/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:
- 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:
- 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_B/I FAQ
1.How can I place an order for P6SMB24CAHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24CAHM3_B/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_B/I reliable?
The price and inventory of P6SMB24CAHM3_B/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_B/I is usually 5 days.
3.What payment methods are accepted for P6SMB24CAHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24CAHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24CAHM3_B/I?
P6SMB24CAHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24CAHM3_B/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_B/I?
For technical support, including P6SMB24CAHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24CAHM3_B/I requirements.
6.How does Aetrix verify that P6SMB24CAHM3_B/I is sourced from the original manufacturer or authorized distributors?
All P6SMB24CAHM3_B/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_B/I meets industry standards.
7.What is the process for return or replacement of P6SMB24CAHM3_B/I?
All P6SMB24CAHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24CAHM3_B/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_B/I part is unused and in its original packaging.
Return procedure for P6SMB24CAHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB24CAHM3_B/I Tags
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Diodes Incorporated
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