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Vishay General Semiconductor - Diodes Division SMA5J11CAHM3/H
- Part No.:
- SMA5J11CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J11CAHM3/H.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,112
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Product details
Overview
SMA5J11CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features a 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 µs), clamping voltage of 18.2 V at 27.5 A IPPM, and operates from –55 °C to +150 °C junction temperature - used in automotive sensor interface protection and industrial I/O line hardening.
For engineers reviewing the SMA5J11CAHM3/H datasheet, SMA5J11CAHM3/H pinout, SMA5J11CAHM3/H application, or SMA5J11CAHM3/H equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, bidirectional clamping behavior, thermal resistance (RθJA = 80 °C/W), and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker testing.
Technical Context
This bidirectional TVS diode uses a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its symmetrical avalanche structure enables identical clamping performance in both polarities, with no polarity marking required on the SMA package.
Rated for 500 W peak pulse power under 10/1000 µs waveform, it sustains repetitive transients when mounted on 5.0 mm × 5.0 mm copper pads per JEDEC standard layout. Thermal design must account for RθJA = 80 °C/W and maximum TJ = 150 °C, with derating applied above TA = 25 °C per Fig. 2 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum continuous reverse operating voltage before significant leakage; defines safe working range for protected circuit. |
| VBR min/max | 12.2 V / 13.5 V at IT = 1 mA - guaranteed avalanche initiation window; ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 18.2 V at 27.5 A - clamped voltage during 500 W surge; determines maximum stress imposed on downstream ICs. |
| PPPM | 500 W (10/1000 µs) - energy-handling capability for lightning-induced or inductive-switching transients. |
| ID @ VWM | 1.0 µA - ultra-low reverse leakage at rated stand-off voltage; minimizes standby power loss in battery-powered systems. |
| TJ max | +150 °C - extended junction temperature rating supports under-hood automotive and industrial environments. |
| Package | SMA (DO-214AC) - surface-mount, low-profile package compatible with automated placement and reflow soldering (MSL Level 1, 260 °C peak). |
Pinout & Package
Two-terminal device in SMA (DO-214AC) package; no polarity marking for bidirectional operation. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD22-B102, with MSL Level 1 moisture sensitivity rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Identical avalanche behavior in both directions; no cathode band marking required - simplifies PCB layout and orientation inspection. |
| Case (body) | Thermal and mechanical interface | Plastic molding meets UL 94 V-0; thermal path relies on copper pad area (5.0 mm × 5.0 mm recommended) to dissipate surge energy. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns - reduces BOM count vs. dual unidirectional TVS. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control modules and ADAS sensor interfaces - supports PPAP documentation and long-term reliability requirements. |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and JESD201 Class 2 whisker resistance - suitable for consumer, industrial, and automotive production. |
| Low RθJA = 80 °C/W | Enables higher sustained surge duty cycles in thermally constrained layouts; requires only minimum recommended copper pad area for full rating. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between signal line and ground, absorbing transients up to 500 W without affecting normal 11 V signal swing. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and analog front-ends while maintaining signal integrity during ISO 7637-2 Pulse 5a/b events. |
Use Scenario: Safeguarding RS-485/RS-232 communication ports and PLC analog input channels against field-induced surges in factory automation equipment. IC Role / Device Role / Timing Role: Fast-response shunt protector that activates within <1 ns to limit transient voltage to ≤18.2 V during 1 kV/500 A surge events. Use Value: Eliminates need for external series impedance or filtering components - preserves signal bandwidth and reduces board space vs. multi-stage protection schemes. |
| Consumer Power Adapter Input | Telecom Line Card Protection |
|
Use Scenario: Secondary-side DC input protection for USB-C PD adapters and wireless charging controllers exposed to system-level ESD and capacitive coupling noise. IC Role / Device Role / Timing Role: Standoff-rated TVS placed across 12 V rail to suppress fast-rising transients from nearby switching regulators or hot-plug events. Use Value: Maintains 1.0 µA leakage at 11 V, minimizing quiescent current drain in always-on standby circuits - critical for Energy Star compliance. |
Use Scenario: Primary protection for Ethernet PHY interfaces and DSL line drivers subjected to lightning-induced surges per IEC 61000-4-5 Level 3 (1 kV/0.5 Ω). IC Role / Device Role / Timing Role: First-line symmetric clamp limiting induced common-mode voltage to ≤18.2 V before reaching isolation transformers or PHY ICs. Use Value: Withstands repeated 500 W pulses without parameter shift - validated for >1000 surges in telecom central office environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J11CAHE3/H | Same electrical specs and package; RoHS-compliant but not halogen-free; lacks JESD201 Class 2 whisker qualification. | Approved for commercial-grade industrial and computing applications; not certified for automotive under AEC-Q101. | Select when halogen-free content and automotive qualification are not required - lower cost alternative with identical clamping performance. |
| SMBJ11CAHM3 | Same VWM/VBR/VC ratings but in larger SMB (DO-214AA) package; PPPM = 600 W; RθJA = 65 °C/W; 10% higher surge current rating (33.2 A). | Better thermal performance and higher single-pulse energy handling; requires larger PCB footprint and different pad layout. | Choose when system-level surge testing exceeds 500 W or ambient temperatures exceed 105 °C - trade-off is 30% larger board area. |
Compared with SMA5J11CAHM3/H, SMA5J11CAHE3/H offers identical protection performance without halogen-free or automotive qualification, while SMBJ11CAHM3 provides higher power margin at the cost of increased size and thermal interface requirements.
Availability
SMA5J11CAHM3/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom line card designs requiring stable component supply, halogen-free compliance, and AEC-Q101 validation.
Supply support for SMA5J11CAHM3/H 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, power density, and automotive-grade qualification.
The SMA5JxxCA family is engineered for high-power-density transient suppression in space-constrained automotive and industrial systems - delivering 500 W surge capability in the compact SMA footprint with AEC-Q101 and halogen-free compliance.
FAQ
What is the clamping voltage of SMA5J11CAHM3/H at its rated peak pulse current?
The SMA5J11CAHM3/H clamps to a maximum of 18.2 V at its specified peak pulse current of 27.5 A (IPPM), measured under the standardized 10/1000 µs waveform. This value ensures downstream ICs experience limited overvoltage stress during surge events. The SMA5J11CAHM3/H maintains this clamping performance bidirectionally due to its symmetrical junction structure.
Is SMA5J11CAHM3/H qualified for automotive applications?
Yes, SMA5J11CAHM3/H is AEC-Q101 qualified, as indicated by the "HM3" suffix (halogen-free, RoHS-compliant, and AEC-Q101 qualified). It is approved for use in automotive subsystems including body control modules, ADAS sensors, and infotainment interfaces where robust transient immunity and long-term reliability are mandated.
How does the bidirectional nature of SMA5J11CAHM3/H affect PCB layout?
The SMA5J11CAHM3/H has no polarity marking - its symmetrical construction eliminates orientation constraints during placement. This simplifies automated assembly and reduces risk of misorientation-related failures. Layout requires only two equal-area copper pads (5.0 mm × 5.0 mm each) per terminal to maintain full 500 W rating and thermal performance.
What is the maximum reverse leakage current for SMA5J11CAHM3/H at its stand-off voltage?
The SMA5J11CAHM3/H exhibits a maximum reverse leakage current (ID) of 1.0 µA at its 11 V stand-off voltage (VWM) and TA = 25 °C. This ultra-low leakage preserves battery life in always-on systems and avoids false triggering in high-impedance sensing circuits - a key advantage over higher-leakage alternatives.
Does SMA5J11CAHM3/H require derating at elevated ambient temperatures?
Yes, SMA5J11CAHM3/H must be derated above TA = 25 °C per Figure 2 in the Vishay datasheet (Document Number: 88875). Its peak pulse power decreases linearly to zero at +150 °C junction temperature, with thermal resistance RθJA = 80 °C/W defining the relationship between power dissipation and ambient conditions.
SMA5J11CAHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 18.2V
- Current - Peak Pulse (10/1000µs):
- 27.5A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J11CAHM3/H FAQ
1.How can I place an order for SMA5J11CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J11CAHM3/H 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 SMA5J11CAHM3/H reliable?
The price and inventory of SMA5J11CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J11CAHM3/H is usually 5 days.
3.What payment methods are accepted for SMA5J11CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J11CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J11CAHM3/H?
SMA5J11CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J11CAHM3/H 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 SMA5J11CAHM3/H?
For technical support, including SMA5J11CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J11CAHM3/H requirements.
6.How does Aetrix verify that SMA5J11CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SMA5J11CAHM3/H 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 SMA5J11CAHM3/H meets industry standards.
7.What is the process for return or replacement of SMA5J11CAHM3/H?
All SMA5J11CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J11CAHM3/H, 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 SMA5J11CAHM3/H part is unused and in its original packaging.
Return procedure for SMA5J11CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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