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Vishay General Semiconductor - Diodes Division P4SMA11CAHE3/61
- Part No.:
- P4SMA11CAHE3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA11CAHE3/61.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA11CAHE3/61 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 11 V breakdown voltage (VBR min/max = 10.5–11.6 V at 1 mA), 9.4 V standoff voltage (VWM), and 15.6 V maximum clamping voltage (VC) at 25.6 A peak pulse current - optimized for protecting MOSFETs, ICs, and sensor interfaces in automotive and industrial systems.
For engineers reviewing the P4SMA11CAHE3/61 datasheet, P4SMA11CAHE3/61 pinout, P4SMA11CAHE3/61 application, or P4SMA11CAHE3/61 equivalent, this AEC-Q101 qualified, RoHS-compliant SMA (DO-214AC) device delivers 400 W peak pulse power (10/1000 µs), low incremental surge resistance, and fast response time - critical for ESD and lightning surge protection in compact PCB layouts.
Technical Context
The P4SMA11CAHE3/61 operates as a bidirectional avalanche diode with symmetrical clamping in both polarities, enabling protection of AC-coupled or differential signal lines without polarity concerns. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive surge stress.
Thermal performance is defined by RθJA = 120 °C/W (junction-to-ambient, on 0.2" × 0.2" copper pads) and RθJL = 30 °C/W (junction-to-lead), supporting operation up to TJ = +150 °C. The device meets MSL Level 1 per J-STD-020 and is rated for 40 A non-repetitive forward surge (8.3 ms half-sine) in unidirectional mode - though P4SMA11CAHE3/61 is bidirectional and thus not rated for IFSM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 10.5–11.6 V at 1 mA test current - defines precise clamping onset threshold for transient suppression |
| Standoff Voltage VWM | 9.4 V - maximum continuous working voltage before leakage exceeds 5 µA; sets safe operating margin below VBR |
| Clamping Voltage VC | 15.6 V at 25.6 A (10/1000 µs) - actual voltage seen by protected circuit during worst-case surge |
| Peak Pulse Power PPPM | 400 W (10/1000 µs waveform) - energy-handling capacity for transient events like ESD or inductive switching |
| Package | SMA (DO-214AC) - surface-mount, low-profile package compatible with automated assembly and IPC-7351B footprint |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
| RoHS Compliance | Yes (HE3 suffix) - lead-free matte tin plating, compliant with EU RoHS Directive 2011/65/EU |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, dimensions 4.93 mm × 3.99 mm × 2.29 mm (L × W × H). Cathode band omitted - bidirectional symmetry eliminates polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Transient conduction path | Both terminals function identically; bidirectional clamping enables placement across any two-point voltage node without orientation check |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V supply rails |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage stress on downstream ICs - critical for 3.3 V or 5 V logic interface protection |
| AEC-Q101 qualification (HE3 suffix) | Validates suitability for automotive infotainment, body control modules, and ADAS sensor interfaces |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT processes without moisture sensitivity concerns or baking requirements |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<5 µA at VWM) over 15-year field life |
Applications
| Automotive Sensor Interface Protection | Industrial CAN Bus Line Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceiver inputs and outputs from load-dump and jump-start transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS placed across differential bus lines (CAN_H/CAN_L) or single-ended sensor supply (VSUPPLY/GND). Use Value: Clamps transients to ≤15.6 V while sustaining 400 W pulses - prevents latch-up or gate oxide damage in ISO 11898-compliant transceivers. |
Use Scenario: Safeguarding RS-485 and CAN FD communication ports in PLCs and motor drives against EFT and surge. IC Role / Device Role / Timing Role: Low-capacitance (≈100 pF at 0 V) bidirectional clamp on data pair, placed adjacent to connector. Use Value: Sub-1 ns response time and 15.6 V clamping preserve signal integrity up to 5 Mbps without adding jitter or distortion. |
| Consumer IoT Power Input Protection | Medical Sensor Signal Conditioning |
|
Use Scenario: Guarding 12 V DC input of smart home hubs and gateways against AC line coupling and hot-plug spikes. IC Role / Device Role / Timing Role: Primary overvoltage clamp between input rail and bulk capacitor, upstream of DC/DC converter. Use Value: 400 W rating absorbs 100 ms surges from nearby relay switching; RoHS/HE3 compliance supports global market access. |
Use Scenario: Shielding analog front-end inputs of wearable ECG/SpO₂ sensors from electrostatic discharge during handling. IC Role / Device Role / Timing Role: Low-leakage (≤5 µA at 9.4 V) bidirectional TVS on differential biopotential amplifier inputs. Use Value: Maintains <1 pA input bias error drift under clamping; AEC-Q101 qualification ensures long-term parametric stability in clinical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ11CA | Higher PPPM = 600 W, larger SMB (DO-214AA) package, VC = 18.2 V at 32.9 A | Better suited for higher-energy surges but requires 30% more board area; less optimal for space-constrained automotive modules | Select when surge energy exceeds 400 W or when legacy SMB footprint is fixed |
| 1.5KE11CA | Through-hole DO-201 package, PPPM = 1500 W, VC = 18.2 V at 82.4 A, no AEC-Q101 qualification | Designed for high-power industrial mains protection; incompatible with automated SMT lines and automotive qualification requirements | Choose only for cost-sensitive, non-automotive, through-hole designs where board space and qualification are secondary |
Compared with SMBJ11CA and 1.5KE11CA, the P4SMA11CAHE3/61 offers the optimal balance of AEC-Q101 compliance, SMA footprint efficiency, and 400 W surge capability - making it the preferred choice for next-generation automotive and compact industrial electronics requiring zero-layout redesign.
Availability
P4SMA11CAHE3/61 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer IoT power inputs, and medical sensor signal conditioning requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for P4SMA11CAHE3/61 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, precision, and automotive-grade validation.
The P4SMA series was engineered specifically for surface-mount transient suppression in space-constrained, high-reliability applications - combining glass-passivated junctions, AEC-Q101 qualification, and standardized SMA packaging for broad adoption across automotive, industrial, and medical markets.
FAQ
What is the clamping voltage of P4SMA11CAHE3/61 at its rated peak pulse current?
The P4SMA11CAHE3/61 has a maximum clamping voltage (VC) of 15.6 V at 25.6 A peak pulse current, measured using the industry-standard 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range and ensures protected circuits remain within safe voltage limits during transient events. The P4SMA11CAHE3/61 achieves this with low incremental surge resistance, contributing to consistent clamping performance.
Is P4SMA11CAHE3/61 suitable for automotive applications?
Yes, P4SMA11CAHE3/61 is AEC-Q101 qualified and manufactured with HE3 suffix - indicating full compliance with automotive reliability stress tests including temperature cycling, high-temperature reverse bias, and ESD. Its SMA package, MSL Level 1 rating, and operation up to +150 °C junction temperature make it appropriate for under-hood and cabin ECU applications. The P4SMA11CAHE3/61 is explicitly listed in Vishay's AEC-Q101 qualified product matrix.
How does the bidirectional configuration of P4SMA11CAHE3/61 affect its circuit placement?
The P4SMA11CAHE3/61 is symmetrically bidirectional, meaning both terminals are electrically identical - no cathode marking is present, and orientation during placement is irrelevant. This simplifies layout and assembly, especially on differential lines like CAN or RS-485, where the P4SMA11CAHE3/61 can be mounted directly across the pair without polarity verification. Unlike unidirectional variants, the P4SMA11CAHE3/61 provides equal clamping in positive and negative voltage excursions.
What is the standoff voltage (VWM) of P4SMA11CAHE3/61, and why does it matter?
The standoff voltage (VWM) of P4SMA11CAHE3/61 is 9.4 V - the maximum continuous DC or RMS voltage the device can withstand without exceeding 5 µA reverse leakage. This parameter establishes the design margin between normal operating voltage and breakdown onset; for example, it allows safe use on 9 V nominal supply rails while retaining headroom for ripple and tolerance. Exceeding VWM risks excessive leakage and thermal runaway, so the P4SMA11CAHE3/61 must be selected with VWM ≥ system max operating voltage.
Does P4SMA11CAHE3/61 require derating at elevated ambient temperatures?
Yes, P4SMA11CAHE3/61 must be derated above TA = 25 °C per Figure 2 in the Vishay datasheet (Doc. #88367). Its peak pulse power drops linearly to ~250 W at 85 °C ambient due to thermal limitations imposed by RθJA = 120 °C/W. Derating ensures junction temperature remains ≤150 °C during surge events. Layout practices - such as using 0.2" × 0.2" copper pads per terminal - are essential to maintain specified PPPM; insufficient copper will accelerate derating. The P4SMA11CAHE3/61 datasheet provides exact derating curves for precise thermal design.
P4SMA11CAHE3/61 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):
- 9.4V
- Voltage - Breakdown (Min):
- 10.5V
- Voltage - Clamping (Max) @ Ipp:
- 15.6V
- Current - Peak Pulse (10/1000µs):
- 25.6A
- 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)
P4SMA11CAHE3/61 FAQ
1.How can I place an order for P4SMA11CAHE3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA11CAHE3/61 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 P4SMA11CAHE3/61 reliable?
The price and inventory of P4SMA11CAHE3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA11CAHE3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA11CAHE3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA11CAHE3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA11CAHE3/61?
P4SMA11CAHE3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA11CAHE3/61 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 P4SMA11CAHE3/61?
For technical support, including P4SMA11CAHE3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA11CAHE3/61 requirements.
6.How does Aetrix verify that P4SMA11CAHE3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA11CAHE3/61 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 P4SMA11CAHE3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA11CAHE3/61?
All P4SMA11CAHE3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA11CAHE3/61, 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 P4SMA11CAHE3/61 part is unused and in its original packaging.
Return procedure for P4SMA11CAHE3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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