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Vishay General Semiconductor - Diodes Division P4SMA12CAHE3/61
- Part No.:
- P4SMA12CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA12CAHE3/61.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,077
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Product details
Overview
P4SMA12CAHE3/61 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 or power lines. It features a 12 V breakdown voltage (VBR = 11.4–12.6 V at 1 mA), 10.2 V maximum standoff voltage (VWM), and 400 W peak pulse power (10/1000 µs waveform), with AEC-Q101 qualification for automotive use.
For engineers reviewing the P4SMA12CAHE3/61 datasheet, P4SMA12CAHE3/61 pinout, P4SMA12CAHE3/61 application, or P4SMA12CAHE3/61 equivalent, key selection criteria include bidirectional clamping capability, SMA (DO-214AC) package compatibility, low clamping voltage (VC = 16.7 V at IPPM), thermal resistance (RθJA = 120 °C/W), and compliance with automotive reliability standards.
Technical Context
The P4SMA12CAHE3/61 operates as a bidirectional avalanche diode, providing symmetrical clamping in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and fast response time (<1 ns), enabling protection against ESD, lightning-induced surges, and inductive switching transients.
It delivers 400 W peak pulse power at 25 °C with derating above TA = 25 °C per Fig. 2, and supports repetitive surge duty cycles up to 0.01 %. The device is rated for TJ = –65 to +150 °C and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 11.4 V / 12.6 V at IT = 1 mA - defines precise avalanche onset threshold for reliable clamping initiation |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC at IPPM | 16.7 V at 24.0 A - clamped voltage during 400 W transient, limiting stress on downstream ICs |
| PPPM | 400 W (10/1000 µs waveform) - surge energy handling capacity for industrial and automotive transients |
| IPPM | 24.0 A - peak pulse current corresponding to VC, used to size PCB trace width and layout |
| RθJA | 120 °C/W - thermal resistance from junction to ambient, critical for power derating in enclosed environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Bidirectional configuration has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | One terminal of bidirectional avalanche junction | Symmetrical conduction path - functions identically as cathode under reverse bias; no functional distinction in CA devices |
| Cathode | Other terminal of bidirectional avalanche junction | Same physical structure as anode; terminals interchangeable due to bidirectional design |
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 | Handles high-energy transients from inductive load switching in automotive power distribution systems |
| AEC-Q101 qualification | Validated for under-hood automotive applications requiring extended temperature operation and long-term reliability |
| MSL Level 1 rating | Supports standard SMT reflow processes without moisture sensitivity concerns or baking requirements |
| Glass passivated junction | Ensures stable VBR over time and temperature, minimizing drift in critical protection thresholds |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
|
Use Scenario: Protecting analog sensor outputs (e.g., pressure, temperature) in engine control units from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential sensor pair or between signal and ground to clamp ±100 V transients. Use Value: Limits voltage excursion to ≤16.7 V, preserving ADC input integrity and preventing latch-up in microcontroller front-end circuitry. |
Use Scenario: Safeguarding CANH/CANL lines in vehicle body control modules against ESD and coupled noise from nearby solenoids. IC Role / Device Role / Timing Role: Low-capacitance bidirectional suppressor installed at connector entry point to shunt fast transients before transceiver input. Use Value: Clamps 8 kV contact ESD events within <1 ns while maintaining CAN signal integrity (no data corruption or bus lockup). |
| Consumer Power Adapter Input Stage | Telecom DSL Line Interface |
|
Use Scenario: Secondary-side surge suppression in AC/DC adapters subjected to lightning-induced surges on DC output rails. IC Role / Device Role / Timing Role: TVS connected between +VOUT and GND to absorb 400 W transients before linear regulator or USB-PD controller. Use Value: Prevents overvoltage damage to downstream LDOs and enables compliance with IEC 61000-4-5 Level 3 (1 kV/2 Ω) |
Use Scenario: Protection of ADSL/VDSL line drivers and receivers against induced surges on twisted-pair telephone lines. IC Role / Device Role / Timing Role: Bidirectional suppressor placed across line pair (tip/ring) to clamp common-mode transients without affecting differential signaling. Use Value: Maintains <1 pF junction capacitance at VWM, avoiding signal attenuation or echo in high-frequency DSL bands (up to 30 MHz). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12CA | Higher PPPM = 600 W, larger SMB (DO-214AA) package, RθJA = 100 °C/W | Better suited for higher-energy surges but requires larger PCB footprint and different pad layout | Select when system-level surge testing exceeds IEC 61000-4-5 Level 4 and board space permits larger package |
| 1.5KE12CA | Through-hole DO-15 package, PPPM = 1500 W, VC = 19.2 V, slower response due to higher parasitic inductance | Used in legacy industrial power supplies where manual assembly or high-power dissipation dominates | Choose only for through-hole designs needing >1 kW surge margin; not suitable for automated SMT production |
Compared with P4SMA12CAHE3/61, SMBJ12CA offers higher surge robustness in a slightly larger SMT package, while 1.5KE12CA provides greater peak power in a through-hole format incompatible with modern high-density layouts - making P4SMA12CAHE3/61 optimal for AEC-Q101-compliant, space-constrained automotive SMT designs.
Availability
P4SMA12CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer power adapter secondary sides, and telecom DSL line interfaces requiring stable component supply with full AEC-Q101 traceability and RoHS compliance.
Supply support for P4SMA12CAHE3/61 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The P4SMA series targets cost-sensitive, high-volume transient protection needs in automotive, industrial, and consumer electronics, delivering standardized TVS performance in compact SMA packages with AEC-Q101 and RoHS options.
FAQ
What is the clamping voltage of the P4SMA12CAHE3/61 under peak pulse conditions?
The P4SMA12CAHE3/61 has a maximum clamping voltage (VC) of 16.7 V at IPPM = 24.0 A, measured with a 10/1000 µs waveform. This value ensures downstream components like microcontrollers or transceivers remain within safe operating voltage limits during surge events. The clamping performance is guaranteed across the full operating temperature range of –65 °C to +150 °C.
Is the P4SMA12CAHE3/61 suitable for automotive applications?
Yes, the P4SMA12CAHE3/61 is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials. Its construction includes glass-passivated junctions and MSL Level 1 moisture sensitivity rating, supporting reflow soldering in automotive production lines. The device is explicitly listed in Vishay's automotive-grade ordering codes (HE3 suffix) and validated for under-hood temperature cycling and long-term reliability.
How does the bidirectional configuration of P4SMA12CAHE3/61 affect its PCB layout?
The P4SMA12CAHE3/61 has no polarity marking and identical electrical behavior in both directions, simplifying layout by eliminating orientation constraints. Engineers can place it across any two nodes requiring symmetrical transient suppression - such as differential signal pairs or AC-coupled lines - without verifying anode/cathode alignment. Its SMA (DO-214AC) footprint matches industry-standard 0.2" × 0.2" copper pads per terminal.
What is the maximum steady-state power dissipation of the P4SMA12CAHE3/61?
The P4SMA12CAHE3/61 has a maximum steady-state power dissipation (PD) of 3.3 W at TA = 50 °C on an infinite heatsink. In typical surface-mount applications with standard 0.2" × 0.2" copper pads, derating applies above 25 °C ambient, governed by RθJA = 120 °C/W. Continuous DC power must remain below this limit to avoid thermal runaway or parameter shift.
Does the P4SMA12CAHE3/61 meet UL recognition requirements?
Yes, the P4SMA12CAHE3/61 carries Underwriters Laboratory Recognition under UL 497B (QVGQ2) with file number E136766 for both unidirectional and bidirectional configurations. This certification confirms suitability for use in primary and secondary circuits of telecommunications and data equipment where safety-rated surge protection is mandated.
P4SMA12CAHE3/61 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 24A
- 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)
P4SMA12CAHE3/61 FAQ
1.How can I place an order for P4SMA12CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA12CAHE3/61 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 P4SMA12CAHE3/61 reliable?
The price and inventory of P4SMA12CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA12CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA12CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA12CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA12CAHE3/61?
P4SMA12CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA12CAHE3/61 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 P4SMA12CAHE3/61?
For technical support, including P4SMA12CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA12CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA12CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA12CAHE3/61 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 P4SMA12CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA12CAHE3/61?
All P4SMA12CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA12CAHE3/61, 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 P4SMA12CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA12CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA12CAHE3/61 Tags
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