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Vishay General Semiconductor - Diodes Division P4SMA10CAHM3_A/I
- Part No.:
- P4SMA10CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA10CAHM3_A/I.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,085
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Product details
Overview
P4SMA10CAHM3_A/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) in SMA (DO-214AC) package, designed for clamping voltage transients on signal or power lines. It features a 10 V standoff voltage (VWM), 11.1 V minimum breakdown voltage (VBR), 14.5 V maximum clamping voltage (VC) at 27.6 A peak pulse current, and 400 W peak pulse power capability with 10/1000 µs waveform - suitable for protecting sensor signal lines in automotive ECUs.
For engineers reviewing the P4SMA10CAHM3_A/I datasheet, P4SMA10CAHM3_A/I pinout, P4SMA10CAHM3_A/I application, or P4SMA10CAHM3_A/I equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification, halogen-free RoHS compliance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
The P4SMA10CAHM3_A/I operates as a bidirectional avalanche diode, exhibiting symmetrical clamping behavior in both polarities with no polarity marking. Its glass-passivated junction enables fast response time (<1 ns) and low incremental surge resistance, critical for suppressing ESD and inductive switching spikes.
Thermally, it supports operation from −65 °C to +150 °C junction temperature, with RθJA = 120 °C/W and RθJL = 30 °C/W. The device is rated for 3.3 W steady-state power dissipation at TA = 50 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff Voltage) | 10 V - Maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 11.1 V min - Voltage at which device enters avalanche conduction under 1 mA test current; ensures reliable triggering |
| VC (Clamping Voltage) | 14.5 V max at IPPM = 27.6 A - Peak voltage seen by protected circuit during 10/1000 µs transient; determines stress on downstream ICs |
| PPPM (Peak Pulse Power) | 400 W - Energy-handling capacity for single 10/1000 µs surge; sufficient for ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 Level 3 |
| ID (Reverse Leakage) | 10 µA max at VWM - Low leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits |
| TJ max | +150 °C - Enables use in under-hood automotive environments and industrial enclosures without derating at full power |
| Qualification | AEC-Q101 qualified - Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing per JEDEC standards |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (bidirectional) | Accepts surge current in either polarity; connects to line being protected (e.g., CAN_H or LIN bus) |
| Cathode | Transient current exit point (bidirectional) | Completes low-impedance path to ground or return rail during clamping; symmetric with Anode in CA devices |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or differential lines (e.g., RS-485, CAN, LIN) without polarity concerns |
| 400 W peak pulse power (10/1000 µs) | Handles high-energy transients common in automotive load-dump and inductive switch-off events |
| AEC-Q101 qualification (HM3 suffix) | Confirms suitability for automotive applications including engine control, body electronics, and ADAS sensors |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without moisture sensitivity handling or baking requirements |
| Glass passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity-induced parameter drift |
Applications
| Automotive Sensor Protection | CAN Bus Transient Suppression |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control modules exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed between sensor output and microcontroller ADC input to clamp ±100 V transients. Use Value: Prevents ADC saturation and latch-up by limiting voltage to ≤14.5 V during 27.6 A surges, preserving signal fidelity and system uptime. |
Use Scenario: Safeguarding CAN_H/CAN_L differential pair against ESD (IEC 61000-4-2 ±8 kV contact) and ISO 7637-2 Pulse 2b (inductive spike). IC Role / Device Role / Timing Role: Two P4SMA10CAHM3_A/I devices deployed in common-mode configuration across CAN_H–GND and CAN_L–GND. Use Value: Maintains CAN physical layer integrity with <1 ns response and <15 V clamping, avoiding bit errors or bus-off conditions during transients. |
| Industrial I/O Module Protection | Consumer Appliance Motor Control |
|
Use Scenario: Shielding 24 V DC digital input channels in PLC I/O modules from field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Bidirectional TVS connected between input terminal and internal optocoupler anode to absorb repetitive 400 W pulses. Use Value: Extends optocoupler lifetime by limiting reverse voltage to 14.5 V, eliminating premature failure due to overvoltage stress. |
Use Scenario: Protecting microcontroller GPIO pins driving H-bridge gate drivers in washing machine motor control boards subjected to brush-commutator noise. IC Role / Device Role / Timing Role: TVS placed on gate drive signal lines (e.g., PWM_IN) referenced to local ground to suppress 50–100 ns ringing. Use Value: Prevents false turn-on of MOSFETs by clamping sub-100 ns spikes to <15 V, ensuring robust commutation timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10CA | Same VWM/VBR/VC specs but in larger SMB (DO-214AA) package; 600 W PPPM rating | Better thermal dissipation for higher-duty-cycle surges; requires larger PCB footprint | Select when sustained transient energy exceeds 400 W or board layout allows 2.54 mm pitch increase |
| 1.5KE10CA | Through-hole TO-218 package; 1500 W PPPM; higher VC (17.5 V); slower response due to parasitic inductance | Used in legacy industrial power supplies where manual assembly or high single-pulse energy dominates | Choose only for through-hole designs requiring >1 kW surge handling; not suitable for high-speed data lines |
Compared with SMBJ10CA and 1.5KE10CA, the P4SMA10CAHM3_A/I offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W capability - making it preferred for space-constrained automotive and industrial SMT designs where reliability and manufacturability are prioritized over extreme pulse energy.
Availability
P4SMA10CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, CAN/LIN bus protection, industrial I/O modules, and consumer appliance motor control requiring stable component supply with guaranteed long-term continuity.
Supply support for P4SMA10CAHM3_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, rectifiers, TVS, MOSFETs, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The P4SMA Series targets cost-effective, high-volume transient protection for automotive, industrial, and consumer electronics - engineered for automated assembly, AEC-Q101 compliance, and robust clamping performance in compact surface-mount packages.
FAQ
What does the "CA" suffix indicate in P4SMA10CAHM3_A/I?
The "CA" suffix in P4SMA10CAHM3_A/I denotes a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., P4SMA10A), this device provides symmetrical clamping in both polarities, making it ideal for protecting AC-coupled or differential signal lines such as CAN, LIN, or RS-485 without polarity constraints. The P4SMA10CAHM3_A/I exhibits identical VWM, VBR, and VC characteristics in either direction.
Is P4SMA10CAHM3_A/I qualified for automotive applications?
Yes, P4SMA10CAHM3_A/I is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's P4SMA series datasheet (Rev. 09-Jan-2024). This qualification covers stress tests including high-temperature operating life, temperature cycling, unbiased highly accelerated stress testing, and ESD per JESD22-A114. The P4SMA10CAHM3_A/I is approved for use in engine control units, body electronics, and ADAS sensor modules.
What is the maximum clamping voltage of P4SMA10CAHM3_A/I and under what conditions is it specified?
The maximum clamping voltage (VC) of P4SMA10CAHM3_A/I is 14.5 V, measured at a peak pulse current (IPPM) of 27.6 A using a 10/1000 µs waveform. This value is guaranteed per the Vishay P4SMA datasheet (Document Number: 88367) and represents the worst-case voltage imposed on the protected circuit during standardized surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the HM3 suffix differ from E3 or M3 in the P4SMA10CAHM3_A/I ordering code?
The HM3 suffix in P4SMA10CAHM3_A/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. In contrast, E3 denotes RoHS-compliant commercial grade (no AEC-Q101), and M3 adds halogen-free composition but still lacks automotive qualification. The "_A/I" portion specifies revision A and 7500-unit tape-and-reel packaging in 13-inch reels - a detail confirmed in Vishay's ordering information table on page 3 of the datasheet.
Can P4SMA10CAHM3_A/I be used in place of unidirectional TVS diodes like P4SMA10A?
No - P4SMA10CAHM3_A/I is strictly bidirectional and lacks cathode marking, while P4SMA10A is unidirectional with a defined cathode band. Substituting them requires circuit-level validation: P4SMA10CAHM3_A/I may be used on AC or floating lines, but cannot replace P4SMA10A in DC-biased configurations (e.g., 5 V supply rail protection) without risking improper clamping behavior. Always verify polarity requirements before interchange.
P4SMA10CAHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8.55V
- Voltage - Breakdown (Min):
- 9.5V
- Voltage - Clamping (Max) @ Ipp:
- 14.5V
- Current - Peak Pulse (10/1000µs):
- 27.6A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
P4SMA10CAHM3_A/I FAQ
1.How can I place an order for P4SMA10CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA10CAHM3_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 P4SMA10CAHM3_A/I reliable?
The price and inventory of P4SMA10CAHM3_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 P4SMA10CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for P4SMA10CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA10CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA10CAHM3_A/I?
P4SMA10CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA10CAHM3_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 P4SMA10CAHM3_A/I?
For technical support, including P4SMA10CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA10CAHM3_A/I requirements.
6.How does Aetrix verify that P4SMA10CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All P4SMA10CAHM3_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 P4SMA10CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of P4SMA10CAHM3_A/I?
All P4SMA10CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA10CAHM3_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 P4SMA10CAHM3_A/I part is unused and in its original packaging.
Return procedure for P4SMA10CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA10CAHM3_A/I Tags
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