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Vishay General Semiconductor - Diodes Division P4SMA10CAHM3_A/H
- Part No.:
- P4SMA10CAHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA10CAHM3_A/H.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,890
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Product details
Overview
P4SMA10CAHM3_A/H 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 10 V standoff voltage (VWM), 14.5 V maximum clamping voltage at 27.6 A peak pulse current, and 400 W peak pulse power capability with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the P4SMA10CAHM3_A/H datasheet, P4SMA10CAHM3_A/H pinout, P4SMA10CAHM3_A/H application, or P4SMA10CAHM3_A/H equivalent, key selection criteria include bidirectional clamping behavior, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
The P4SMA10CAHM3_A/H operates as a bidirectional avalanche diode, providing symmetrical clamping in both polarities without polarity marking. Its breakdown voltage is specified at 10.5–11.6 V (min/max) with 1 mA test current, and it maintains stable performance across -65 °C to +150 °C operating junction temperature range.
It delivers 400 W peak pulse power under 10/1000 µs waveform per JEDEC standards, derated above 25 °C ambient per thermal curve Fig. 2, and exhibits <1 ns response time with low clamping ratio (VC/VBR ≈ 1.33). The device meets MSL Level 1 per J-STD-020 and supports reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 10 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin for 12 V nominal circuits. |
| VBR (Breakdown) | 10.5–11.6 V at 1 mA - Avalanche onset threshold; ensures predictable turn-on during transient events. |
| VC (Clamping) | 14.5 V at 27.6 A - Peak voltage seen by protected circuit during 400 W transient; limits stress on downstream ICs. |
| PPPM | 400 W (10/1000 µs) - Surge energy handling capacity; sufficient for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3. |
| ID (Leakage) | 10 µA max at VWM - Low standby current preserves signal integrity and battery life in always-on sensor interfaces. |
| TJ max | +150 °C - Enables operation in under-hood automotive environments and high-power industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals solderable per J-STD-002. No polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Provides symmetrical conduction path for positive or negative surges; connects to ground or common reference plane. |
| Cathode | Transient return path (bidirectional) | Functionally identical to Anode in CA-type devices; no cathode band marking; both terminals serve as interchangeable surge shunt nodes. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 400 W peak pulse power | Supports robust immunity against load dump, inductive switching, and lightning-induced surges in 12 V systems. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive electronics including body control modules, ADAS sensors, and infotainment interfaces. |
| MSL Level 1 / 260 °C reflow | Compatible with standard lead-free SMT assembly processes without moisture sensitivity handling requirements. |
| Low clamping ratio (VC/VBR ≈ 1.33) | Minimizes overvoltage exposure to protected ICs while maintaining fast response and low dynamic impedance. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., temperature, pressure) from ESD and load-dump transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between signal line and chassis ground to shunt transients before reaching interface IC. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V sensor front-ends while maintaining signal fidelity due to low capacitance and leakage. |
Use Scenario: Safeguarding digital input/output channels on programmable logic controllers exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Fast-acting voltage limiter on 24 V DC I/O lines, placed adjacent to connector entry points to intercept surges before isolation barriers. Use Value: Extends system uptime by eliminating field failures caused by repetitive 400 W transients without requiring external series impedance. |
| Consumer Power Adapter Interface | Telecom Line Card Surge Protection |
Use Scenario: Clamping induced surges on USB-C power delivery lines and auxiliary signal pins during hot-plug events or adapter fault conditions. IC Role / Device Role / Timing Role: Secondary-level TVS on VBUS and CC lines, working in coordination with primary MOVs and polymer PTCs. Use Value: Provides sub-100 ns response to meet USB PD 3.1 ESD immunity requirements while surviving >1000 surges at rated PPPM. |
Use Scenario: Protecting Ethernet PHY interfaces and analog telephone line drivers from lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: First-stage clamping device on tip/ring pairs, mounted directly at RJ-45 connector to minimize trace inductance. Use Value: Achieves 4 kV/2 kA surge withstand with minimal voltage overshoot due to low Rdyn and tight VBR distribution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10CA | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; 12.6 V VC at 32.4 A. | Better suited for higher-energy transients but requires larger board area and different pad layout. | Select when surge energy exceeds 400 W or when thermal dissipation demands lower RθJA. |
| 1.5KE10CA | Through-hole TO-218 package; 1500 W PPPM; 17.5 V VC at 85.5 A; higher leakage (50 µA). | Designed for legacy board designs and high-reliability power supply inputs where manual assembly is acceptable. | Choose for cost-sensitive industrial power supplies where SMT is not required and footprint is unconstrained. |
Compared with SMBJ10CA and 1.5KE10CA, the P4SMA10CAHM3_A/H offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and precise 10 V clamping for space-constrained automotive and portable electronics - without sacrificing surge robustness or manufacturability.
Availability
P4SMA10CAHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and telecom line card designs requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P4SMA10CAHM3_A/H 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 optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA Series targets high-volume, space-constrained transient protection needs in automotive, industrial, and consumer electronics - delivering standardized TVS performance in low-profile surface-mount packages with automotive-grade qualification options.
FAQ
What does the "CA" suffix mean in P4SMA10CAHM3_A/H?
The "CA" suffix in P4SMA10CAHM3_A/H indicates a bidirectional Transient Voltage Suppressor. Unlike unidirectional variants (e.g., P4SMA10A), the CA version provides symmetrical clamping for both positive and negative voltage transients, with no polarity marking on the SMA package. This makes the P4SMA10CAHM3_A/H ideal for protecting AC-coupled or floating signal paths such as data lines, sensor bridges, or differential bus interfaces where polarity reversal may occur.
Is P4SMA10CAHM3_A/H qualified for automotive use?
Yes, P4SMA10CAHM3_A/H is AEC-Q101 qualified, as confirmed by the "HM3" suffix denoting halogen-free, RoHS-compliant, and automotive-grade construction. It has undergone stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 Rev H, making it suitable for under-hood and cabin applications such as body control modules, ADAS camera interfaces, and infotainment power rails.
What is the maximum clamping voltage of P4SMA10CAHM3_A/H at rated surge current?
The maximum clamping voltage (VC) of P4SMA10CAHM3_A/H is 14.5 V at 27.6 A peak pulse current (IPPM), measured under the standard 10/1000 µs waveform. This value reflects the worst-case voltage imposed on the protected circuit during a full-rated 400 W transient event, ensuring downstream components like 3.3 V or 5 V microcontrollers remain within safe absolute maximum ratings.
How does the HM3 suffix differ from E3 or M3 in the P4SMA10CAHM3_A/H ordering code?
The "HM3" suffix in P4SMA10CAHM3_A/H specifies halogen-free, RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from "E3" (RoHS-compliant commercial grade) and "M3" (halogen-free RoHS-compliant commercial grade). The HM3 variant undergoes additional automotive reliability testing and is intended for mission-critical automotive applications, whereas E3/M3 are for general industrial or consumer use.
Can P4SMA10CAHM3_A/H be used in place of unidirectional P4SMA10A in existing designs?
No - P4SMA10CAHM3_A/H is bidirectional and lacks polarity marking, while P4SMA10A is unidirectional with a cathode band. Substituting them requires verifying circuit topology: P4SMA10CAHM3_A/H works only where symmetrical clamping is needed (e.g., differential lines), whereas P4SMA10A must be oriented correctly for DC-biased rails. Using P4SMA10CAHM3_A/H in a unidirectional design may result in improper clamping or failure to protect.
P4SMA10CAHM3_A/H 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/H FAQ
1.How can I place an order for P4SMA10CAHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA10CAHM3_A/H 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/H reliable?
The price and inventory of P4SMA10CAHM3_A/H 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/H is usually 5 days.
3.What payment methods are accepted for P4SMA10CAHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA10CAHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA10CAHM3_A/H?
P4SMA10CAHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA10CAHM3_A/H 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/H?
For technical support, including P4SMA10CAHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA10CAHM3_A/H requirements.
6.How does Aetrix verify that P4SMA10CAHM3_A/H is sourced from the original manufacturer or authorized distributors?
All P4SMA10CAHM3_A/H 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/H meets industry standards.
7.What is the process for return or replacement of P4SMA10CAHM3_A/H?
All P4SMA10CAHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA10CAHM3_A/H, 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/H part is unused and in its original packaging.
Return procedure for P4SMA10CAHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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