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Vishay General Semiconductor - Diodes Division P6SMB24CAHM3_A/I
- Part No.:
- P6SMB24CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24CAHM3_A/I.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,518
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Product details
Overview
P6SMB24CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P6SMB series, designed for clamping voltage transients on signal and power lines. It features a 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 a 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P6SMB24CAHM3_A/I datasheet, P6SMB24CAHM3_A/I pinout, P6SMB24CAHM3_A/I application, or P6SMB24CAHM3_A/I equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification status, SMB (DO-214AA) package thermal performance, and compliance with IEC 61000-4-2/4-5 surge immunity requirements.
Technical Context
This device operates as a voltage-clamping protector with symmetrical reverse/forward breakdown behavior due to its bidirectional construction. Its glass-passivated junction ensures stable leakage (<1.0 μA at 20.5 V) and fast response time (<1.0 ns), enabling effective suppression of ESD and inductive switching spikes.
The P6SMB24CAHM3_A/I is rated for 150 °C maximum junction temperature and exhibits low incremental surge resistance, delivering consistent clamping performance under repetitive 0.01% duty cycle transients. Its MSL Level 1 rating and matte tin-plated leads support lead-free reflow compatibility per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 20.5 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (Breakdown) | 22.8–25.2 V at 1.0 mA - guaranteed symmetric breakdown threshold in both directions |
| VC (Clamping) | 33.2 V at 18.1 A IPPM - peak voltage seen by protected circuit during 10/1000 μs transient |
| PPPM | 600 W - peak pulse power handling capacity under standardized surge waveform |
| ID (Leakage) | <1.0 μA at VWM - minimal standby current draw preserving signal integrity and power efficiency |
| Package | SMB (DO-214AA) - 0.205" × 0.220" footprint with 20 °C/W junction-to-lead thermal resistance |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking; cathode/anode terminals are functionally interchangeable in AC-coupled or differential line protection applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts surge current in either polarity; connects to line under protection |
| Cathode | Transient current exit (bidirectional) | Completes clamping path to ground or return rail; electrically identical to Anode in CA devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses (e.g., RS-485), and floating power rails without polarity concerns |
| AEC-Q101 qualification (HM3 suffix) | Validated for automotive electronics including engine control units and ADAS sensor interfaces requiring extended temperature and lifetime reliability |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation when mounted per recommended pad layout |
| Halogen-free & RoHS-compliant (HM3) | Meets EU Directive 2011/65/EU and IPC-4101D requirements for green manufacturing and end-of-life processing |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profiles up to 260 °C peak, eliminating bake-out requirements prior to assembly |
Applications
| Automotive Sensor Interface Protection | Industrial RS-485 Communication Line |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed across differential signal pair or supply-to-ground. Use Value: Limits transient voltage to ≤33.2 V during 10/1000 μs surges, preventing latch-up or gate oxide damage in downstream ASICs. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers (e.g., SN65HVD230) against ESD and lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Common-mode transient suppressor connected between A/B lines and ground in fail-safe termination networks. Use Value: Maintains signal integrity below 33.2 V clamping level while supporting >500 kbps data rates due to low junction capacitance (~200 pF). |
| Consumer Power Adapter Input Stage | Smart Meter AC Mains Surge Protection |
Use Scenario: Secondary-side overvoltage suppression in USB-C PD adapters and wireless charging controllers exposed to capacitor discharge events. IC Role / Device Role / Timing Role: Fast-acting shunt protector across DC output rails (e.g., 20 V ±10%) before LDO regulators. Use Value: Responds in <1 ns to clamp 600 W transients, reducing risk of regulator failure and ensuring UL 62368-1 compliance. |
Use Scenario: Front-end protection for polyphase smart meters interfacing directly to 230 VAC mains with high-energy surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Pre-regulator stage clamp across rectified DC bus (e.g., 325 VDC) in conjunction with MOVs and GDTs. Use Value: Provides precise 33.2 V clamping window to trigger crowbar circuits or isolate sensitive metrology ICs during multi-kV surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA | Same VWM (24 V), lower PPPM (400 W), SMA package (higher RθJA = 140 °C/W) | Limited to lower-energy transients; less suitable for automotive under-hood environments | Select when cost sensitivity outweighs peak power margin and thermal derating is acceptable |
| SMCJ24CA | Same VWM (24 V), higher PPPM (1500 W), SMC package (larger footprint, lower RθJA = 15 °C/W) | Overqualified for PCB space-constrained designs; requires larger copper pads | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 or repeated surge endurance is critical |
Compared with P6SMB24CAHM3_A/I, SMAJ24CA offers reduced surge margin and thermal performance in a smaller package, while SMCJ24CA delivers higher robustness at the expense of board area - making P6SMB24CAHM3_A/I the optimal balance of AEC-Q101 reliability, 600 W capability, and SMB footprint for mid-tier automotive and industrial applications.
Availability
P6SMB24CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial communication gateways, consumer power adapters, and smart metering systems requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for P6SMB24CAHM3_A/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The P6SMB Series targets cost-sensitive yet reliability-critical transient suppression needs in automotive, industrial, and telecom infrastructure - combining AEC-Q101 qualification, halogen-free materials, and standardized SMB packaging for automated manufacturing.
FAQ
What does the "CA" suffix indicate in P6SMB24CAHM3_A/I?
The "CA" suffix denotes a bidirectional configuration, meaning the P6SMB24CAHM3_A/I provides symmetrical clamping in both forward and reverse directions - essential for protecting AC-coupled signals, differential buses like RS-485, or floating power domains where polarity is undefined. Unlike unidirectional variants (e.g., P6SMB24AHM3_A/I), it has no cathode marking and functions identically across both terminals.
Is P6SMB24CAHM3_A/I qualified for automotive use?
Yes, P6SMB24CAHM3_A/I is AEC-Q101 qualified, as confirmed by the "HM3" suffix and Vishay documentation. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and accelerated life testing - validating its suitability for under-hood and cabin electronics such as body control modules and sensor signal conditioning circuits.
What is the maximum clamping voltage of P6SMB24CAHM3_A/I under surge conditions?
The maximum clamping voltage (VC) of P6SMB24CAHM3_A/I 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 represents the highest voltage the protected circuit will experience during a standardized surge event - critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the SMB package of P6SMB24CAHM3_A/I compare thermally to SMA or SMC packages?
The SMB (DO-214AA) package of P6SMB24CAHM3_A/I offers a thermal resistance of 20 °C/W junction-to-lead (RθJL), significantly better than SMA's ~40 °C/W but higher than SMC's ~15 °C/W. When mounted on 0.2" × 0.2" copper pads, its RθJA is 100 °C/W - striking a balance between compact size and thermal performance suitable for moderate-duty surge environments without requiring oversized heatsinking.
Can P6SMB24CAHM3_A/I be used in place of a unidirectional TVS like P6SMB24AHM3_A/I?
No - P6SMB24CAHM3_A/I is bidirectional and lacks polarity marking, whereas P6SMB24AHM3_A/I is unidirectional with a defined cathode band. Substituting them requires verifying circuit topology: bidirectional use is mandatory for AC signals or differential lines, while unidirectional parts are required for DC rail-to-ground protection where reverse conduction must be blocked. Interchangeability is not permitted without schematic and layout review.
P6SMB24CAHM3_A/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:
- 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:
- 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_A/I FAQ
1.How can I place an order for P6SMB24CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24CAHM3_A/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_A/I reliable?
The price and inventory of P6SMB24CAHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for P6SMB24CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24CAHM3_A/I?
P6SMB24CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24CAHM3_A/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_A/I?
For technical support, including P6SMB24CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24CAHM3_A/I requirements.
6.How does Aetrix verify that P6SMB24CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P6SMB24CAHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of P6SMB24CAHM3_A/I?
All P6SMB24CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24CAHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for P6SMB24CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB24CAHM3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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