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Vishay General Semiconductor - Diodes Division SMA5J11AHE3/5A
- Part No.:
- SMA5J11AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J11AHE3/5A.pdf
- Description:
- TVS DIODE 11VWM 18.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,230
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Product details
Overview
SMA5J11AHE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on power and signal lines. It features a 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR), 18.2 V clamping voltage (VC) at 27.5 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J11AHE3/5A datasheet, SMA5J11AHE3/5A pinout, SMA5J11AHE3/5A application, or SMA5J11AHE3/5A equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a clamping device that remains non-conductive below VWM = 11 V and rapidly avalanches above VBR (min 12.2 V) to limit transient overvoltages. Its glass-passivated junction ensures stable leakage (<1.0 µA at VWM) and repeatable breakdown behavior under repetitive surge stress.
Designed for 10/1000 µs surge waveforms, it delivers 500 W peak pulse power with 18.2 V clamping at 27.5 A, achieving low dynamic impedance (≈0.66 Ω) and fast response time (<1.0 ns). Thermal resistance is RθJA = 80 °C/W (on recommended pad layout), supporting operation from –55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - precise avalanche onset range defining turn-on threshold |
| VC @ IPPM | 18.2 V at 27.5 A - clamped voltage during 500 W surge, limiting downstream IC stress |
| PPPM | 500 W - peak pulse power handling per 10/1000 µs waveform, derated above 25 °C |
| IFSM | 40 A - 8.3 ms half-sine surge current rating for unidirectional forward conduction |
| Junction Temp | –55 °C to +150 °C - full operational range compatible with under-hood automotive environments |
| Leakage @ VWM | ≤1.0 µA - minimal standby power loss and signal integrity impact in high-impedance circuits |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; cathode indicated by band; meets UL 94 V-0, MSL Level 1 (260 °C reflow), JESD201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to protected line ground or low-side reference; enables unidirectional clamping to GND |
| Cathode | Reverse-biased terminal / clamping node | Connected to protected line (e.g., 12 V rail); avalanche conduction occurs when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD47 |
| Glass-passivated junction | Ensures stable VBR tolerance, low leakage drift, and long-term surge endurance |
| Low incremental surge resistance | Dynamic impedance ≈0.66 Ω enables tighter clamping and reduced overshoot during fast transients |
| MSL Level 1 compliance | Supports standard SMT reflow without pre-baking; peak temperature up to 260 °C |
| Automated placement optimized | Standard SMA footprint and lead geometry compatible with high-speed pick-and-place equipment |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and inductive switching transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and chassis ground to shunt surges before reaching sensitive front-end amplifiers or microcontrollers. Use Value: Clamps 12 V system transients to ≤18.2 V within nanoseconds, preserving signal integrity and preventing latch-up in AEC-Q100 qualified ICs. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to relay coil flyback, motor drive noise, and field wiring ESD. IC Role / Device Role / Timing Role: Primary surge suppression element on 24 V DC input channels, mounted directly at connector entry point. Use Value: Withstands 40 A 8.3 ms surge (IFSM) and 500 W transient energy, enabling robust operation in factory-floor electromagnetic environments. |
| Consumer Power Adapter Output | Telecom Line Card Surge Protection |
Use Scenario: Secondary-side overvoltage protection on 5–12 V DC outputs of wall adapters and USB PD chargers against capacitor discharge and fault coupling. IC Role / Device Role / Timing Role: Standoff-clamp TVS connected between output rail and GND to absorb residual switching spikes and hot-plug transients. Use Value: 11 V VWM allows clean regulation margin; 18.2 V VC ensures downstream LDOs and USB controllers remain within absolute maximum ratings. |
Use Scenario: Front-end protection on Ethernet PHY power rails and auxiliary control lines in network switches and base station line cards. IC Role / Device Role / Timing Role: Fast-response transient suppressor co-located with DC-DC converters supplying PHY ICs and clock buffers. Use Value: Sub-1 ns response and low capacitance (<100 pF at 0 V) prevent signal distortion on 100 MHz+ data paths while meeting IEC 61000-4-5 Level 4 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J11A-E3/5A | No AEC-Q101 qualification; commercial grade only; identical electrical specs and package | Not suitable for automotive production; acceptable for industrial or consumer prototypes | Select when AEC-Q101 is not required and cost sensitivity outweighs qualification needs |
| SMA5J11CAHE3/5A | Bidirectional variant; symmetric clamping in both polarities; same VWM, VBR, VC, PPPM | Required for AC-coupled or floating signal lines (e.g., RS-485, audio) where polarity reversal may occur | Choose for bidirectional protection; note absence of polarity marking and doubled ID limit at low VWM |
Compared with SMA5J11AHE3/5A, the E3/5A variant lacks automotive qualification but offers identical surge performance for non-automotive use, while the CAHE3/5A provides polarity-agnostic clamping essential for differential or AC-signaled interfaces - neither is pin-compatible due to functional divergence, requiring schematic and layout review.
Availability
SMA5J11AHE3/5A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O terminals, and telecom power rail protection requiring stable component supply with AEC-Q101 assurance and SMT scalability.
Supply support for SMA5J11AHE3/5A 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 qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained, high-reliability applications - particularly targeting 12 V/24 V automotive and industrial systems where AEC-Q101 compliance and 500 W surge capability are critical.
FAQ
What is the clamping voltage of SMA5J11AHE3/5A at its rated peak pulse current?
The SMA5J11AHE3/5A has a maximum clamping voltage (VC) of 18.2 V at its rated peak pulse current (IPPM) of 27.5 A, measured using the standardized 10/1000 µs double-exponential surge waveform. This value ensures protected circuitry remains within safe operating limits during transient events. The SMA5J11AHE3/5A achieves this with low dynamic impedance, making it effective for safeguarding 12 V automotive and industrial power rails.
Is SMA5J11AHE3/5A qualified for automotive applications?
Yes, SMA5J11AHE3/5A is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified construction. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD per JESD47. The SMA5J11AHE3/5A is intended for under-hood and body-control module applications where reliability across –55 °C to +150 °C is mandatory.
What is the difference between SMA5J11AHE3/5A and SMA5J11A-E3/5A?
The SMA5J11AHE3/5A includes AEC-Q101 qualification and automotive-grade screening, whereas SMA5J11A-E3/5A is commercial-grade only. Electrically and physically identical - same VWM, VBR, VC, package, and thermal specs - the distinction lies solely in reliability validation. For automotive production, SMA5J11AHE3/5A is required; for prototyping or non-automotive use, SMA5J11A-E3/5A may be selected for cost optimization.
What PCB pad layout is recommended for optimal thermal and surge performance of SMA5J11AHE3/5A?
Vishay specifies mounting SMA5J11AHE3/5A on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 500 W pulse power and thermal resistance (RθJA = 80 °C/W). Minimum pad dimensions ensure adequate heat dissipation during surge events and maintain junction temperature within 150 °C limit. The SMA5J11AHE3/5A datasheet provides exact outline and solder mask clearance requirements for DO-214AC.
Does SMA5J11AHE3/5A have polarity marking, and how is it oriented in circuit?
Yes, SMA5J11AHE3/5A is unidirectional and marked with a cathode band at one end. In circuit, the banded end connects to the line being protected (e.g., 12 V rail), while the anode connects to ground - enabling clamping action when reverse voltage exceeds VBR. Bidirectional variants (e.g., SMA5J11CAHE3/5A) omit the band. Correct orientation is essential; reverse connection renders the SMA5J11AHE3/5A ineffective for surge suppression.
SMA5J11AHE3/5A 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:
- 1
- Bidirectional Channels:
- -
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J11AHE3/5A FAQ
1.How can I place an order for SMA5J11AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J11AHE3/5A 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 SMA5J11AHE3/5A reliable?
The price and inventory of SMA5J11AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J11AHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J11AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J11AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J11AHE3/5A?
SMA5J11AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J11AHE3/5A 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 SMA5J11AHE3/5A?
For technical support, including SMA5J11AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J11AHE3/5A requirements.
6.How does Aetrix verify that SMA5J11AHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J11AHE3/5A 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 SMA5J11AHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J11AHE3/5A?
All SMA5J11AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J11AHE3/5A, 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 SMA5J11AHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J11AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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