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Vishay General Semiconductor - Diodes Division P4SMA9.1CAHE3/61
- Part No.:
- P4SMA9.1CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA9.1CAHE3/61.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,053
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Product details
Overview
P4SMA9.1CAHE3/61 from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the P4SMA series, designed for clamping voltage transients on signal and power lines. It features a 9.1 V breakdown voltage (VBR = 8.65–9.55 V at IT = 1.0 mA), 13.4 V maximum clamping voltage (VC) at 29.9 A peak pulse current, and 400 W peak pulse power rating with a 10/1000 µs waveform - suitable for protecting automotive-grade sensor interfaces and industrial I/O lines.
For engineers reviewing the P4SMA9.1CAHE3/61 datasheet, P4SMA9.1CAHE3/61 pinout, P4SMA9.1CAHE3/61 application, or P4SMA9.1CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, SMA (DO-214AC) package compatibility, and thermal resistance (RθJA = 120 °C/W) under standard PCB pad layout conditions.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical electrical characteristics forward and reverse - enabling protection of AC-coupled or differential signal paths without polarity concerns. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<50 µA at VWM = 7.78 V), while the low incremental surge resistance supports fast transient suppression.
The device is rated for repetitive 400 W pulses (duty cycle 0.01 %) up to TA = 25 °C, derating linearly above that temperature per Figure 2. It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101, confirming suitability for automotive electronics where reliability under thermal cycling and mechanical stress is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 8.65–9.55 V at 1.0 mA test current - defines precise clamping onset threshold for overvoltage events |
| Stand-off Voltage VWM | 7.78 V - maximum continuous working voltage before leakage exceeds 50 µA; sets safe operating margin below VBR |
| Clamping Voltage VC | 13.4 V at 29.9 A (10/1000 µs) - peak voltage seen by protected circuit during worst-case surge |
| Peak Pulse Power PPPM | 400 W (10/1000 µs) - energy-handling capacity for transient suppression without failure |
| Operating Temperature Range | −65 °C to +150 °C - supports deployment in under-hood automotive and industrial environments |
| Thermal Resistance RθJA | 120 °C/W - determines junction temperature rise under steady-state power dissipation (PD = 3.3 W) |
| AEC-Q101 Qualified | Yes - validated for automotive applications including engine control modules and body electronics |
Pinout & Package
Package: SMA (DO-214AC) - surface-mount, low-profile plastic case with matte tin-plated leads, UL 94 V-0 rated molding compound, and 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad layout recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias | One side of symmetrical bidirectional structure; no polarity marking on device body |
| Cathode | Current exit terminal in forward bias | Electrically identical to Anode in bidirectional operation; terminals interchangeable for AC protection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and leakage in both directions - eliminates need for polarity-aware placement on differential or AC lines |
| 400 W peak pulse power | Handles high-energy transients (e.g., ISO 7637-2 Pulse 1/2a/5a) without degradation when mounted per recommended pad layout |
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity testing, and mechanical shock - enables direct use in Tier-1 designs |
| Low profile SMA package | Height ≤ 2.29 mm - compatible with automated SMT assembly and space-constrained PCB layouts in ECUs and sensor nodes |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60 % RH - simplifies inventory management and eliminates bake requirements prior to reflow |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching spikes in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across signal line and ground to clamp transients before they reach sensitive input stages. Use Value: Limits voltage excursion to ≤13.4 V during 29.9 A surges, preserving signal integrity and preventing latch-up in 5 V or 3.3 V interface ICs. |
Use Scenario: Safeguarding RS-485/RS-422 transceivers and PLC analog inputs against ESD and lightning-induced surges in factory automation systems. IC Role / Device Role / Timing Role: Parallel-connected transient suppressor on differential pair or single-ended signal path to shunt surge energy away from communication ICs. Use Value: Clamps common-mode transients within 1 ns response time, maintaining data integrity during 4 kV ESD events per IEC 61000-4-2. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
|
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters and USB PD chargers exposed to mains-borne transients. IC Role / Device Role / Timing Role: Bidirectional clamp between DC output rail and ground to absorb switching noise and surge coupling from primary side. Use Value: Withstands 400 W pulses without parametric shift, ensuring long-term reliability in cost-sensitive consumer power supplies. |
Use Scenario: Protecting Ethernet PHYs and DSL line drivers from induced surges on telephone line interfaces in residential gateways and DSLAMs. IC Role / Device Role / Timing Role: Low-capacitance TVS placed at line entry point to suppress longitudinal surges while minimizing signal distortion. Use Value: Junction capacitance <100 pF at VWM preserves signal bandwidth up to 100 MHz, meeting IEEE 802.3 compliance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ9.0CA | Higher VBR (8.55–9.45 V), same SMA package, 600 W PPPM rating | Better suited for higher-energy transients but requires tighter VWM margin (7.37 V) | Select when system-level surge testing exceeds 400 W and board layout allows same footprint |
| 1.5KE9.1CA | Through-hole DO-201 package, 1500 W PPPM, higher VC (14.5 V) | Not surface-mountable; used in legacy or high-power non-automotive designs | Choose only if through-hole assembly is mandated and AEC-Q101 is not required |
Compared with SMBJ9.0CA and 1.5KE9.1CA, P4SMA9.1CAHE3/61 offers optimal balance of AEC-Q101 qualification, compact SMA packaging, and precise 9.1 V clamping - making it the preferred choice for new automotive and space-constrained industrial designs requiring production-grade reliability.
Availability
P4SMA9.1CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom line interface circuits requiring stable component supply, full traceability, and lifecycle continuity support.
Supply support for P4SMA9.1CAHE3/61 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, efficiency, and application-specific performance.
The P4SMA series was developed to deliver AEC-Q101-qualified, surface-mount TVS diodes for automotive and industrial electronics where space, thermal performance, and transient immunity are critical design constraints.
FAQ
What does the "CA" suffix mean in P4SMA9.1CAHE3/61?
The "CA" suffix in P4SMA9.1CAHE3/61 indicates a bidirectional configuration - meaning the device provides symmetrical transient suppression in both polarities, with identical breakdown and clamping characteristics for positive and negative voltage excursions. This eliminates polarity concerns during PCB layout and supports AC-coupled or differential signal protection. The P4SMA9.1CAHE3/61 is fully specified for bidirectional operation per Vishay Document 88367.
Is P4SMA9.1CAHE3/61 RoHS-compliant and halogen-free?
Yes, P4SMA9.1CAHE3/61 is RoHS-compliant and carries the HE3 suffix, which denotes RoHS compliance and AEC-Q101 qualification. However, it is not halogen-free - the halogen-free variant uses the HM3 suffix (e.g., P4SMA9.1CAHM3/61). The HE3 version uses standard molding compound meeting UL 94 V-0, with matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
What is the maximum clamping voltage of P4SMA9.1CAHE3/61 under surge conditions?
The maximum clamping voltage (VC) of P4SMA9.1CAHE3/61 is 13.4 V at a peak pulse current (IPPM) of 29.9 A, measured using the standardized 10/1000 µs double-exponential waveform. This value represents the highest voltage imposed on the protected circuit during a worst-case transient event, and is guaranteed across the full operating temperature range per Vishay's published electrical characteristics table.
Can P4SMA9.1CAHE3/61 be used in place of unidirectional P4SMA9.1AHE3/61?
No - P4SMA9.1CAHE3/61 is bidirectional and has no polarity marking, while P4SMA9.1AHE3/61 is unidirectional with a cathode band. They are not functionally interchangeable: using the bidirectional part in a unidirectional circuit may cause unintended conduction during normal operation, and vice versa may fail to protect against negative transients. Always match device polarity type to circuit topology and transient directionality requirements.
What PCB pad layout is recommended for optimal thermal performance of P4SMA9.1CAHE3/61?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for P4SMA9.1CAHE3/61 to achieve the rated 400 W peak pulse power and thermal resistance of 120 °C/W. Smaller pads reduce surge handling capability and increase junction temperature - potentially triggering premature failure during repetitive transients. The recommended layout is documented in Figure 1 of Vishay Document 88367 and aligns with DO-214AC industry standards.
P4SMA9.1CAHE3/61 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):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 29.9A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA9.1CAHE3/61 FAQ
1.How can I place an order for P4SMA9.1CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA9.1CAHE3/61 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 P4SMA9.1CAHE3/61 reliable?
The price and inventory of P4SMA9.1CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA9.1CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA9.1CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA9.1CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA9.1CAHE3/61?
P4SMA9.1CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA9.1CAHE3/61 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 P4SMA9.1CAHE3/61?
For technical support, including P4SMA9.1CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA9.1CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA9.1CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA9.1CAHE3/61 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 P4SMA9.1CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA9.1CAHE3/61?
All P4SMA9.1CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA9.1CAHE3/61, 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 P4SMA9.1CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA9.1CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA9.1CAHE3/61 Tags
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