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Vishay General Semiconductor - Diodes Division P4SMA10CAHM3/I
- Part No.:
- P4SMA10CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA10CAHM3/I.pdf
- Description:
- TVS DIODE 8.55VWM 14.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,604
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Product details
Overview
P4SMA10CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode 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 rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial electronics.
For engineers reviewing the P4SMA10CAHM3/I datasheet, P4SMA10CAHM3/I pinout, P4SMA10CAHM3/I application, or P4SMA10CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, low clamping voltage under surge, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
The P4SMA10CAHM3/I operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown behavior and fast response time (<1 ns), enabling protection against ESD, inductive switching spikes, and lightning-induced surges.
Rated for 150 °C maximum junction temperature and MSL Level 1 moisture sensitivity, it delivers 400 W peak pulse power (derated to 300 W above 91 V), with thermal resistance of 120 °C/W (junction-to-ambient) and 30 °C/W (junction-to-lead) - optimized for PCB-level transient suppression without heatsinking under typical layout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 10 V - maximum continuous reverse working voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown) | 10.5–11.6 V at 1 mA - guaranteed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping) | 14.5 V at 27.6 A IPPM - maximum voltage seen by protected circuit during 10/1000 µs surge; critical for IC I/O voltage tolerance. |
| PPPM | 400 W - peak pulse power handling with 10/1000 µs waveform; supports robust protection against common industrial surges. |
| ID (Leakage) | 10 µA max at VWM - minimal standby current; avoids signal distortion or battery drain in low-power systems. |
| TJ max | 150 °C - maximum junction temperature; enables operation in under-hood automotive and high-ambient industrial environments. |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per JESD22 standards. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads solderable per J-STD-002. Bidirectional construction has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (negative polarity) | One terminal of symmetrical avalanche junction; conducts during negative transients to clamp voltage. |
| Cathode | Transient current entry (positive polarity) | Other terminal of symmetrical avalanche junction; conducts during positive transients to clamp voltage. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| AEC-Q101 qualification | Validates reliability for automotive powertrain, body control, and ADAS modules requiring extended lifetime and stress resilience. |
| 400 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV, 2 Ω source) when mounted on recommended 0.2" × 0.2" copper pads. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage stress on downstream components - critical for 3.3 V or 5 V logic interfaces. |
| MSL Level 1, 260 °C reflow | Supports standard lead-free SMT assembly without pre-baking or special handling. |
Applications
| Automotive Sensor Signal Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS clamping transient spikes before they reach ADC input or op-amp buffer stages. Use Value: Prevents sensor data corruption and latch-up during 12 V system transients up to ±300 V, leveraging 14.5 V clamping and AEC-Q101 qualification. |
Use Scenario: Safeguarding CANH/CANL differential pair in factory automation PLCs subjected to EFT and surge events per IEC 61000-4-4/4-5. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF at 0 V) bidirectional suppressor placed across bus lines near connector. Use Value: Maintains signal integrity at 1 Mbps CAN FD rates while limiting bus voltage to ≤14.5 V during 1 kV/500 A transients. |
| Consumer Power Adapter Output | Telecom Ethernet PHY Interface |
Use Scenario: Secondary-side overvoltage suppression on 5 V/9 V USB PD adapter outputs prone to feedback loop failure or Zener drift. IC Role / Device Role / Timing Role: Fail-safe shunt device clamping output rail to prevent damage to connected devices during regulator fault. Use Value: 400 W surge rating absorbs 10/1000 µs faults without degradation; 10 µA leakage avoids no-load efficiency loss. |
Use Scenario: Protecting 10/100/1000BASE-T Ethernet PHY pins from lightning-induced surges entering via RJ45 magnetics. IC Role / Device Role / Timing Role: Bidirectional TVS placed line-to-line and line-to-ground on transformer secondary side. Use Value: Symmetrical 14.5 V clamping prevents PHY latch-up while meeting GR-1089-CORE Level 3 surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10CA | Higher 600 W PPPM rating; larger SMB (DO-214AA) package; 15.6 V VC at 32.4 A. | Better suited for higher-energy surges but requires larger PCB area and may not fit space-constrained layouts. | Select when surge energy exceeds 400 W and board space allows SMB footprint. |
| 1.5KE10CA | Through-hole TO-218 package; 1500 W PPPM; 17.5 V VC at 86.7 A; no AEC-Q101 qualification. | Designed for legacy or high-power industrial mains protection, not automotive or SMT production. | Choose only for non-automotive, non-SMT designs where manual assembly and higher surge margin are prioritized. |
Compared with P4SMA10CAHM3/I, SMBJ10CA offers higher surge capacity in a larger SMT package, while 1.5KE10CA provides much higher power handling in through-hole form but lacks automotive qualification and modern SMT compatibility - making P4SMA10CAHM3/I optimal for space-limited, AEC-Q101–required automotive and industrial SMT applications.
Availability
P4SMA10CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN networks, and consumer power adapter protection requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for P4SMA10CAHM3/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, and protection devices with emphasis on reliability, precision, and automotive-grade qualification.
The P4SMA Series targets cost-effective, high-volume transient suppression in automotive, industrial, and consumer electronics - engineered for automated assembly, low-profile mounting, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of P4SMA10CAHM3/I at its rated peak pulse current?
The P4SMA10CAHM3/I has a maximum clamping voltage (VC) of 14.5 V at 27.6 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88367 and represents the upper limit of voltage imposed on the protected circuit during surge events - critical for ensuring compatibility with 3.3 V or 5 V logic interfaces. The P4SMA10CAHM3/I maintains this clamping performance across its qualified operating temperature range.
Is P4SMA10CAHM3/I suitable for automotive applications?
Yes, P4SMA10CAHM3/I is AEC-Q101 qualified and specifically designated for automotive use with the "HM3" suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per JESD22 standards. The P4SMA10CAHM3/I is commonly deployed in engine control modules, body electronics, and ADAS sensor interfaces where reliability under harsh thermal and electrical conditions is mandatory.
What does the "CA" suffix mean in P4SMA10CAHM3/I?
The "CA" suffix in P4SMA10CAHM3/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions, with identical electrical characteristics in either direction. Unlike unidirectional variants (e.g., P4SMA10A), the P4SMA10CAHM3/I has no cathode band marking and is used where polarity of transients is undefined or alternating, such as across differential signal pairs or AC-coupled lines.
What is the thermal resistance of P4SMA10CAHM3/I, and how does it affect PCB layout?
The P4SMA10CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W and junction-to-lead resistance (RθJL) of 30 °C/W. These values assume mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under repetitive surge conditions, PCB layout must replicate this pad area - undersized traces or insufficient copper will cause thermal derating and potential failure. The P4SMA10CAHM3/I does not require external heatsinking when used within its specified duty cycle.
How does P4SMA10CAHM3/I compare to unidirectional P4SMA10A in terms of application suitability?
The P4SMA10CAHM3/I is bidirectional and used where transient polarity is unknown or alternating (e.g., data lines, AC signals), while P4SMA10A is unidirectional and intended for DC rails with defined polarity (e.g., +5 V supply). The P4SMA10CAHM3/I has identical VWM (10 V), VBR (10.5–11.6 V), and VC (14.5 V) ratings but lacks polarity marking and supports symmetrical clamping. Substituting one for the other without verifying circuit topology may result in improper protection or forward conduction during normal operation.
P4SMA10CAHM3/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:
- Discontinued at Digi-Key
- 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/I FAQ
1.How can I place an order for P4SMA10CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA10CAHM3/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/I reliable?
The price and inventory of P4SMA10CAHM3/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/I is usually 5 days.
3.What payment methods are accepted for P4SMA10CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA10CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA10CAHM3/I?
P4SMA10CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA10CAHM3/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/I?
For technical support, including P4SMA10CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA10CAHM3/I requirements.
6.How does Aetrix verify that P4SMA10CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA10CAHM3/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/I meets industry standards.
7.What is the process for return or replacement of P4SMA10CAHM3/I?
All P4SMA10CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA10CAHM3/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/I part is unused and in its original packaging.
Return procedure for P4SMA10CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA10CAHM3/I Tags
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