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Vishay General Semiconductor - Diodes Division P4SMA11CAHM3/I
- Part No.:
- P4SMA11CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA11CAHM3/I.pdf
- Description:
- TVS DIODE 9.4VWM 15.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
P4SMA11CAHM3/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 and power lines. It features 11 V breakdown voltage (VBR min/max = 10.5–11.6 V at 1 mA), 9.4 V standoff voltage (VWM), 15.6 V clamping voltage (VC) at 25.6 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the P4SMA11CAHM3/I datasheet, P4SMA11CAHM3/I pinout, P4SMA11CAHM3/I application, or P4SMA11CAHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 120 °C/W), junction temperature limit (TJ = 150 °C), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
The P4SMA11CAHM3/I operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction enables fast response time (<1 ns) and low incremental surge resistance, critical for suppressing ESD and inductive switching spikes.
Rated for 400 W peak pulse power (10/1000 µs) up to TA = 25 °C - derated linearly above 25 °C per Fig. 2 - it delivers stable clamping performance across -65 °C to +150 °C operating junction range, with maximum reverse leakage of 5.0 µA at VWM and temperature coefficient of VBR = 0.075 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 10.5–11.6 V at 1 mA test current - defines precise avalanche initiation threshold for reliable transient detection |
| Standoff Voltage VWM | 9.4 V - maximum continuous working voltage before conduction begins; ensures no interference during normal operation |
| Clamping Voltage VC | 15.6 V at 25.6 A IPPM - limits downstream voltage stress during surge events to safe levels for 3.3 V/5 V logic |
| Peak Pulse Power PPPM | 400 W (10/1000 µs) - sustains high-energy transients common in automotive load-dump and inductive kick scenarios |
| Operating Temperature | -65 °C to +150 °C - supports under-hood automotive and industrial environments without derating loss |
| Thermal Resistance RθJA | 120 °C/W - determines required PCB copper area (0.2" × 0.2") for thermal management in compact layouts |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock per JESD22 |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Bidirectional configuration has no polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (bidirectional) | Accepts positive or negative surge energy; connects to protected line without polarity constraint |
| Cathode | Transient current exit (bidirectional) | Completes low-impedance path to ground or return rail; symmetric with Anode for AC-coupled protection |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surges in 12 V automotive systems |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive electronics per stress test requirements - eliminates need for additional qualification by Tier 1 suppliers |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure |
| MSL Level 1 (260 °C reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration standards for sustainable manufacturing |
Applications
| Automotive Body Control Module | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load-dump transients and ESD in door modules and lighting controls. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed between LIN line and ground, absorbing ±100 V/500 ms pulses without latch-up. Use Value: Prevents MCU reset or damage during battery disconnection events while maintaining signal integrity below 15.6 V clamping threshold. |
Use Scenario: Safeguarding analog outputs (4–20 mA) and digital inputs (RS-485) of PLC I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) TVS shunting transients directly at connector entry point before signal conditioning circuitry. Use Value: Limits induced voltage to ≤15.6 V during 1 kV/500 Ω surge tests (IEC 61000-4-5), preserving ADC accuracy and isolator integrity. |
| Consumer Appliance Motor Drive | Telecom Power Supply Input |
Use Scenario: Clamping inductive kickback from brushed DC motor commutation in washing machine and HVAC blower circuits. IC Role / Device Role / Timing Role: Mounted across motor terminals or MOSFET drain-source, conducting within <1 ns to suppress >100 V spikes. Use Value: Extends MOSFET lifetime by limiting VDS stress to 15.6 V, avoiding avalanche failure during repeated switching cycles. |
Use Scenario: Secondary-side transient suppression on 5 V/12 V DC outputs of telecom AC/DC adapters subjected to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional TVS placed between output rail and ground, handling repetitive 400 W pulses at 0.01 % duty cycle. Use Value: Maintains regulated output stability during EN 61000-4-5 Level 3 testing (1 kV line-earth), preventing brownouts or latch-up in downstream ASICs. |
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 600 W PPPM rating, larger SMB (DO-214AA) package (4.58 mm × 3.94 mm vs. SMA's 4.50 mm × 2.79 mm) | Better suited for higher-energy surges but requires PCB layout change due to 30 % larger footprint and 0.5 mm taller profile | Select SMBJ11CA only when system-level surge testing exceeds 400 W or when thermal margin is constrained by ambient airflow |
| 1.5KE11CA | Through-hole TO-218 package, 1500 W PPPM, higher VC = 18.2 V at 83.3 A | Designed for legacy board designs and high-power AC mains protection; incompatible with automated SMT assembly | Choose 1.5KE11CA only for repair/refurbishment of through-hole systems where rework cost outweighs redesign effort |
Compared with SMBJ11CA and 1.5KE11CA, the P4SMA11CAHM3/I offers optimal balance of space-constrained SMT compatibility, AEC-Q101 qualification, and 400 W surge handling - making it the preferred choice for new automotive and industrial PCB designs requiring halogen-free compliance and MSL Level 1 processing.
Availability
P4SMA11CAHM3/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, consumer appliance motor drives, and telecom power supply protection requiring stable component supply with full traceability and lifecycle continuity.
Supply support for P4SMA11CAHM3/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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The P4SMA Series targets cost-sensitive, space-constrained transient protection applications where AEC-Q101 qualification, low-profile SMT packaging, and consistent clamping performance are essential - especially in automotive ECUs and industrial I/O modules.
FAQ
What is the clamping voltage of P4SMA11CAHM3/I at its rated peak pulse current?
The P4SMA11CAHM3/I has a maximum clamping voltage (VC) of 15.6 V at 25.6 A peak pulse current (IPPM) under 10/1000 µs waveform conditions. This value is measured per Figure 1 in Vishay document 88367 and ensures downstream ICs operating at 3.3 V or 5 V remain within safe voltage margins during surge events. The P4SMA11CAHM3/I maintains this clamping performance across its full operating temperature range (-65 °C to +150 °C).
Is P4SMA11CAHM3/I suitable for automotive applications?
Yes, the P4SMA11CAHM3/I is AEC-Q101 qualified (indicated by the HM3 suffix) and specifically designed for automotive use. It meets stress test requirements including temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock per JESD22 standards. Its halogen-free, RoHS-compliant construction and MSL Level 1 rating further support reflow-compatible manufacturing in automotive ECUs such as body control modules and lighting drivers.
What does the "CA" suffix mean in P4SMA11CAHM3/I?
The "CA" suffix in P4SMA11CAHM3/I denotes a bidirectional Transient Voltage Suppressor - meaning it provides symmetrical clamping for both positive and negative transients without polarity dependence. Unlike unidirectional variants (e.g., P4SMA11AHM3/I), the CA version has no cathode band marking and is electrically identical in both directions, making it ideal for AC-coupled lines, differential buses, and floating signal paths where polarity cannot be guaranteed.
How does the thermal resistance of P4SMA11CAHM3/I affect PCB layout?
The P4SMA11CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W, which assumes mounting on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. To maintain TJ ≤ 150 °C under 400 W pulse conditions, designers must allocate sufficient copper area and avoid excessive trace length or isolation. Reducing pad size or using thinner copper increases RθJA, risking thermal runaway during repetitive surges - so the P4SMA11CAHM3/I's layout guidance is non-negotiable for reliability.
What is the maximum reverse leakage current for P4SMA11CAHM3/I at its standoff voltage?
The P4SMA11CAHM3/I exhibits a maximum reverse leakage current (ID) of 5.0 µA at its standoff voltage (VWM = 9.4 V) and TA = 25 °C. This low leakage ensures minimal power loss and signal distortion in always-on monitoring circuits, such as sensor bias rails or LIN bus termination networks. Leakage remains below 10 µA up to 85 °C, supporting stable operation in high-temperature industrial enclosures without compromising system quiescent current budgets.
P4SMA11CAHM3/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):
- 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)
P4SMA11CAHM3/I FAQ
1.How can I place an order for P4SMA11CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA11CAHM3/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 P4SMA11CAHM3/I reliable?
The price and inventory of P4SMA11CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA11CAHM3/I is usually 5 days.
3.What payment methods are accepted for P4SMA11CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA11CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA11CAHM3/I?
P4SMA11CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA11CAHM3/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 P4SMA11CAHM3/I?
For technical support, including P4SMA11CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA11CAHM3/I requirements.
6.How does Aetrix verify that P4SMA11CAHM3/I is sourced from the original manufacturer or authorized distributors?
All P4SMA11CAHM3/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 P4SMA11CAHM3/I meets industry standards.
7.What is the process for return or replacement of P4SMA11CAHM3/I?
All P4SMA11CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA11CAHM3/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 P4SMA11CAHM3/I part is unused and in its original packaging.
Return procedure for P4SMA11CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA11CAHM3/I Tags
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