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Taiwan Semiconductor Corporation P6SMB24CAH
- Part No.:
- P6SMB24CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB24CAH.pdf
- Description:
- TVS DIODE 20.5VWM 33.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,596
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Product details
Overview
P6SMB24CAH from Taiwan Semiconductor is a bidirectional 600W surface-mount transient voltage suppressor (TVS) diode designed for high-energy ESD and surge protection in automotive and industrial power rails. It features a 22.8V–25.2V breakdown voltage (VBR), 20.5V stand-off voltage (VWM), clamps to ≤33.2V at 19A peak pulse current, and meets ISO 7637-2 Pulse 1/2a/2b/3a/3b immunity requirements - deployed in 12V/24V vehicle infotainment power inputs.
For engineers reviewing the P6SMB24CAH datasheet, P6SMB24CAH pinout, P6SMB24CAH application, or P6SMB24CAH equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, DO-214AA (SMB) package compatibility with automated SMT lines, and verified compliance with automotive transient immunity standards.
Technical Context
P6SMB24CAH is a glass-passivated, bipolar TVS diode optimized for fast response (<1.0 ps rise time from 0 V to VBR min) and low leakage (<1 µA @ 20.5V). Its junction-to-ambient thermal resistance is 55°C/W, enabling reliable operation up to +150°C junction temperature under transient stress.
The device uses a single-die DO-214AA (SMB) package with matte tin-plated leads, polarity marked by cathode band, and conforms to JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - ensuring robustness in reflow-soldered automotive PCB assemblies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 22.8 V / 25.2 V - ensures reliable triggering above 20.5 V system operating voltage while avoiding false trips |
| VWM | 20.5 V - maximum continuous reverse working voltage compatible with 24 V nominal automotive systems |
| VC @ IPPM | ≤33.2 V @ 19 A - limits downstream IC voltage stress during ISO 7637-2 Pulse 2b (inductive load dump) |
| PPPSM | 600 W - handles 10/1000 µs surge pulses without degradation in automotive power line protection |
| IR @ VWM | <1 µA - negligible standby power loss and no interference with low-current sensor bias networks |
| TJ max | +150 °C - supports under-hood deployment in engine control units and body electronics |
| Package | DO-214AA (SMB) - industry-standard 2-pin SMT footprint (4.57 × 3.94 mm), compatible with IPC-7351B land patterns |
Pinout & Package
DO-214AA (SMB) surface-mount package: molded epoxy case meeting UL 94V-0 flammability rating; matte tin-plated leads; cathode band marking indicates polarity for unidirectional variants - P6SMB24CAH is bidirectional, so cathode band serves as mechanical orientation reference only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (cathode-band side) | Transient current return path (bidirectional) | Functions identically as cathode during negative transients; symmetric clamping enables placement across any DC rail without polarity concern |
| Cathode (cathode-band side) | Transient current return path (bidirectional) | Same electrical role as anode; bidirectional symmetry eliminates need for orientation-aware layout or BOM differentiation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JEDEC standards |
| Glass passivated junction | Enhances long-term stability and moisture resistance versus epoxy-passivated alternatives in humid environments |
| ISO 7637-2 compliance | Guarantees functional immunity against real-world vehicle transients: Pulse 1 (load dump), Pulse 2a (switching), Pulse 3a/b (line impedance) |
| Low profile SMB package | Enables high-density routing on compact ECUs and ADAS modules without compromising thermal performance |
| Halogen-free & RoHS compliant | Meets EU Directive 2011/65/EU and IEC 61249-2-21, supporting green manufacturing and end-of-life recycling |
Applications
| Automotive Power Input Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: 12 V/24 V battery-fed infotainment head unit power entry subjected to load dump and jump-start surges. IC Role / Device Role / Timing Role: Primary clamping device placed upstream of DC-DC converters and LDOs to limit rail voltage excursion. Use Value: Clamps to ≤33.2 V during 19 A ISO 7637-2 Pulse 2b events, preventing overvoltage damage to downstream PMICs and microcontrollers. | Use Scenario: Digital input channel on programmable logic controller exposed to inductive kickback from solenoid drivers. IC Role / Device Role / Timing Role: Bidirectional transient shunt protecting optocoupler input and signal conditioning circuitry. Use Value: Sub-1 ps response ensures clamping initiates before 10 ns edge rates propagate into sensitive logic, preserving signal integrity. |
| LED Lighting Driver Protection | Automotive CAN Transceiver Protection |
Use Scenario: Constant-current LED driver board in exterior lighting subjected to ESD and cable discharge events. IC Role / Device Role / Timing Role: Secondary-level TVS placed across driver output terminals to absorb repetitive ESD strikes. Use Value: <1 µA leakage at 20.5 V prevents unintended dimming or flicker in low-power standby modes. | Use Scenario: CAN FD transceiver interface on vehicle gateway module connected to external harnesses. IC Role / Device Role / Timing Role: Common-mode surge protector across CAN_H/CAN_L differential pair. Use Value: Symmetric bidirectional clamping maintains differential voltage integrity during ±33.2 V common-mode transients without disrupting CAN protocol timing. |
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 peak power rating; higher VC (38.9 V @ 10.3 A); same DO-214AC (SMA) footprint | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 1 (load dump) | Select P6SMB24CAH when 600 W surge handling and automotive load dump compliance are required. |
| 1.5KE24CA | Through-hole TO-204AE (DO-15) package; 1500 W rating but larger size and higher parasitic inductance | Not suitable for high-density SMT designs; slower effective response due to lead inductance | Choose P6SMB24CAH for space-constrained automotive PCBs requiring surface-mount reliability and fast clamping. |
Compared with SMAJ24CA and 1.5KE24CA, P6SMB24CAH delivers optimal balance of 600 W surge capacity, SMB footprint compatibility, AEC-Q101 qualification, and sub-1 ps response - making it the preferred choice for next-generation automotive and industrial SMT transient protection.
Availability
P6SMB24CAH is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and LED lighting systems requiring stable component supply with full traceability and lifecycle management.
Supply support for P6SMB24CAH 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
P6SMB24CAH belongs to TSC's AEC-Q101-qualified P6SMB series - engineered specifically for automotive-grade transient suppression where reliability, fast response, and standardized SMB packaging are critical.
FAQ
What is the clamping voltage of P6SMB24CAH under peak pulse conditions?
P6SMB24CAH clamps to a maximum of 33.2 V when subjected to its rated 19 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and ensures downstream ICs remain within safe absolute maximum ratings during automotive load dump events.
Is P6SMB24CAH suitable for bidirectional signal line protection?
Yes, P6SMB24CAH is explicitly designed for bidirectional use, as indicated by the "CAH" suffix. Its symmetrical breakdown characteristics (22.8–25.2 V in both directions) make it appropriate for protecting differential interfaces like CAN, LIN, or RS-485 - though discrete line-to-line and line-to-ground placement is still required per IEC 61000-4-5 guidelines.
Does P6SMB24CAH meet automotive qualification standards?
Yes, P6SMB24CAH is AEC-Q101 qualified and tested to meet ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b transient immunity requirements. It also complies with JESD201 Class 2 whisker resistance and J-STD-020 Moisture Sensitivity Level 1 - confirming suitability for automotive under-hood and cabin applications.
What is the maximum steady-state power dissipation for P6SMB24CAH?
P6SMB24CAH has a steady-state power dissipation (Ptot) rating of 3 W at TA = 25°C. This value derates linearly above 25°C ambient per the published thermal derating curve (RθJA = 55°C/W), limiting continuous power to ~1.5 W at 75°C ambient - sufficient for transient-only duty cycles but not for sustained overvoltage conditions.
How does the DO-214AA (SMB) package of P6SMB24CAH compare to DO-214AC (SMA)?
The DO-214AA (SMB) package used by P6SMB24CAH measures 4.57 × 3.94 mm - 0.6 mm wider and 0.3 mm longer than DO-214AC (SMA). This provides higher power handling (600 W vs. 400 W for SMAJ series) and improved thermal dissipation (RθJA = 55°C/W vs. ~65°C/W), while maintaining compatibility with standard SMT pick-and-place equipment and reflow profiles.
P6SMB24CAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB
- 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):
- 19A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
P6SMB24CAH FAQ
1.How can I place an order for P6SMB24CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB24CAH 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 P6SMB24CAH reliable?
The price and inventory of P6SMB24CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB24CAH is usually 5 days.
3.What payment methods are accepted for P6SMB24CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB24CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB24CAH?
P6SMB24CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB24CAH 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 P6SMB24CAH?
For technical support, including P6SMB24CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB24CAH requirements.
6.How does Aetrix verify that P6SMB24CAH is sourced from the original manufacturer or authorized distributors?
All P6SMB24CAH 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 P6SMB24CAH meets industry standards.
7.What is the process for return or replacement of P6SMB24CAH?
All P6SMB24CAH units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB24CAH, 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 P6SMB24CAH part is unused and in its original packaging.
Return procedure for P6SMB24CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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