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Vishay General Semiconductor - Diodes Division P4SMA7.5CAHE3/61
- Part No.:
- P4SMA7.5CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA7.5CAHE3/61.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,958
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Product details
Overview
P4SMA7.5CAHE3/61 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 and power lines. It features a 7.13 V minimum breakdown voltage (VBR), 6.40 V maximum standoff voltage (VWM), 11.3 V clamping voltage (VC) at 35.4 A peak pulse current, 400 W peak pulse power (10/1000 µs), and AEC-Q101 qualification for automotive use.
For engineers reviewing the P4SMA7.5CAHE3/61 datasheet, P4SMA7.5CAHE3/61 pinout, P4SMA7.5CAHE3/61 application, or P4SMA7.5CAHE3/61 equivalent, this device serves as a robust, RoHS-compliant, bidirectional protection solution for low-voltage sensor interfaces, automotive control modules, and industrial I/O lines where fast response (<1 ns), low clamping ratio, and MSL Level 1 reflow compatibility are critical.
Technical Context
The P4SMA7.5CAHE3/61 operates as a bidirectional avalanche diode, symmetrically clamping both positive and negative transients above its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5% typical), low leakage (<500 µA at VWM), and repeatable surge performance under repetitive 0.01% duty cycle conditions.
Thermally, it exhibits RθJA = 120 °C/W and RθJL = 30 °C/W, enabling reliable operation up to TJ = 150 °C when mounted on 5.0 mm × 5.0 mm copper pads. The device meets J-STD-020 MSL Level 1 and supports lead-free reflow up to 260 °C peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Standoff) | 6.40 V - Maximum continuous reverse voltage before conduction begins; defines safe operating margin below breakdown. |
| VBR (Min/Max) | 7.13 V / 7.88 V at 10 mA - Confirmed avalanche onset range; ensures predictable clamping initiation across production lot. |
| VC @ IPPM | 11.3 V at 35.4 A - Clamped voltage during 400 W transient; determines protected circuit's maximum stress level. |
| PPPM | 400 W (10/1000 µs) - Peak surge energy handling capacity; validates suitability for IEC 61000-4-5 Level 3/4 surges. |
| ID @ VWM | <500 µA - Low leakage preserves signal integrity and battery life in always-on sensor circuits. |
| TJ Range | –65 °C to +150 °C - Enables deployment in under-hood automotive, industrial PLC, and outdoor telecom environments. |
| AEC-Q101 | Qualified - Confirms reliability for automotive electronics per stress-test requirements (HTOL, TC, HAST, etc.). |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); cathode band absent per bidirectional design.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as low-impedance sink for both positive and negative surges relative to common reference. |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode in CA devices; forms symmetrical clamping pair with no DC polarity dependence. |
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 IEC 61000-4-5 combination wave surges (e.g., 2 Ω/42 Ω source impedance). |
| MSL Level 1 rating | Permits unlimited floor life and standard reflow without baking; simplifies SMT line integration. |
| AEC-Q101 qualification | Validates long-term reliability in automotive ECUs, body controllers, and ADAS sensor interfaces. |
| Glass passivated junction | Ensures stable VBR over temperature and lifetime; minimizes parameter drift in harsh environments. |
Applications
| Automotive Sensor Interface | Industrial I/O Protection |
|---|---|
|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control units from load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between signal line and ground, responding within <1 ns to suppress transients exceeding 7.13 V. Use Value: Prevents latch-up or damage to downstream op-amps and ADC inputs while maintaining sub-µA leakage for precision measurement. |
Use Scenario: Safeguarding 24 V digital input channels on PLC modules exposed to field wiring surges and ESD events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminal, shunting surge current away from optocoupler or Schmitt trigger input stage. Use Value: Limits voltage seen by upstream logic to ≤11.3 V during 400 W transients, ensuring functional safety compliance without derating. |
| Consumer USB Port Protection | Telecom Line Interface |
|
Use Scenario: Secondary-level protection on USB 2.0 D+/D− lines in portable devices subjected to system-level ESD per IEC 61000-4-2. IC Role / Device Role / Timing Role: Fast-response bidirectional clamp placed after primary ESD array, absorbing residual energy post-primary clamping. Use Value: Maintains signal integrity with low capacitance (typ. 100 pF at 0 V) while delivering 15 kV contact ESD robustness. |
Use Scenario: Protecting RS-485 transceiver pins in base station backhaul equipment from lightning-induced surges on twisted-pair lines. IC Role / Device Role / Timing Role: Common-mode TVS across differential pair (A–B) and to ground, clamping mode-switching transients. Use Value: Withstands repeated 10/1000 µs surges up to 35.4 A without degradation, supporting 20-year field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ7.0CA | Higher VWM (6.0 V), lower VC (11.2 V), same 400 W rating but SMB package (larger footprint, higher thermal mass). | Preferred for space-tolerant designs requiring enhanced thermal dissipation or legacy SMB layout reuse. | Select SMBJ7.0CA only if PCB pad area allows larger DO-214AA footprint and thermal budget exceeds P4SMA7.5CAHE3/61's RθJA. |
| 1.5KE7.5CA | Through-hole TO-218 package, 1500 W rating, higher VC (12.0 V), slower response due to parasitic inductance. | Suitable for high-energy AC mains or power supply input stages-not for high-speed signal lines. | Choose 1.5KE7.5CA only for non-SMT, high-surge industrial power entry points where board space and speed are secondary. |
Compared with SMBJ7.0CA and 1.5KE7.5CA, the P4SMA7.5CAHE3/61 delivers optimal balance of compact SMA size, AEC-Q101 qualification, and precise low-voltage clamping-making it the preferred choice for automotive and space-constrained industrial signal protection where MSL-1 reflow and bidirectional symmetry are mandatory.
Availability
P4SMA7.5CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and consumer USB interface protection requiring stable component supply, full traceability, and AEC-Q101 compliance.
Supply support for P4SMA7.5CAHE3/61 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 high-reliability diodes, MOSFETs, and passive components for automotive, industrial, and computing markets.
The P4SMA7.5CAHE3/61 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for fast, repeatable transient suppression in space-constrained, high-reliability applications demanding AEC-Q101 validation and MSL Level 1 process compatibility.
FAQ
What is the clamping voltage of P4SMA7.5CAHE3/61 at its rated peak pulse current?
The P4SMA7.5CAHE3/61 has a maximum clamping voltage (VC) of 11.3 V at its rated peak pulse current (IPPM) of 35.4 A, measured under the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is confirmed in the Vishay P4SMA Series datasheet (Document Number: 88367, Rev. 09-Jan-2024). The P4SMA7.5CAHE3/61 maintains this clamping performance across its full operating temperature range.
Is P4SMA7.5CAHE3/61 suitable for automotive applications?
Yes, the P4SMA7.5CAHE3/61 is AEC-Q101 qualified and explicitly designated for automotive use via its "HE3" suffix, indicating RoHS-compliant and AEC-Q101-qualified construction. It meets stress test requirements including high-temperature operating life, temperature cycling, and humidity testing. The P4SMA7.5CAHE3/61 is deployed in engine control units, body electronics, and ADAS sensor interfaces where reliability under thermal and electrical stress is critical.
What does the "CA" suffix mean in P4SMA7.5CAHE3/61?
The "CA" suffix in P4SMA7.5CAHE3/61 denotes a bidirectional configuration: the device provides symmetrical transient suppression for both positive and negative voltage excursions, with identical electrical characteristics in either polarity. Unlike unidirectional "A" variants, P4SMA7.5CAHE3/61 has no cathode band marking and is used where signal lines float or carry AC content-such as LIN bus, RS-485, or audio paths. This is confirmed in Vishay's P4SMA Series documentation.
What is the standoff voltage (VWM) of P4SMA7.5CAHE3/61, and why does it matter?
The standoff voltage (VWM) of P4SMA7.5CAHE3/61 is 6.40 V-the maximum continuous working voltage the device can block without significant leakage. This parameter ensures the P4SMA7.5CAHE3/61 remains non-conductive during normal operation (e.g., on a 5 V or 6 V rail), preserving signal fidelity and minimizing power loss. Exceeding VWM risks premature conduction and increased leakage, degrading system performance.
Does P4SMA7.5CAHE3/61 require special PCB layout considerations?
Yes-Vishay specifies mounting P4SMA7.5CAHE3/61 on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 400 W pulse power and thermal performance. Smaller pads reduce heat dissipation, derating peak power capability. Additionally, short, direct traces to ground minimize inductance and preserve clamping speed. These guidelines are defined in the P4SMA Series datasheet (Fig. 1, Note 2) and apply strictly to the P4SMA7.5CAHE3/61.
P4SMA7.5CAHE3/61 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):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 35.4A
- 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)
P4SMA7.5CAHE3/61 FAQ
1.How can I place an order for P4SMA7.5CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA7.5CAHE3/61 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 P4SMA7.5CAHE3/61 reliable?
The price and inventory of P4SMA7.5CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA7.5CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA7.5CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA7.5CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA7.5CAHE3/61?
P4SMA7.5CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA7.5CAHE3/61 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 P4SMA7.5CAHE3/61?
For technical support, including P4SMA7.5CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA7.5CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA7.5CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA7.5CAHE3/61 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 P4SMA7.5CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA7.5CAHE3/61?
All P4SMA7.5CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA7.5CAHE3/61, 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 P4SMA7.5CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA7.5CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA7.5CAHE3/61 Tags
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