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Vishay General Semiconductor - Diodes Division SMA6J11AHM3/5A
- Part No.:
- SMA6J11AHM3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J11AHM3/5A.pdf
- Description:
- TVS DIODE 11VWM 17.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA6J11AHM3/5A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 11 V stand-off voltage (VWM), 12.2–13.5 V breakdown voltage (VBR at IT = 1 mA), 17.2 V maximum clamping voltage at 34.8 A (10/1000 μs), 600 W peak pulse power rating, and operates from –55 °C to +150 °C junction temperature - used in industrial sensor interface protection.
For engineers reviewing the SMA6J11AHM3/5A datasheet, SMA6J11AHM3/5A pinout, SMA6J11AHM3/5A application, or SMA6J11AHM3/5A equivalent, key selection criteria include clamping voltage vs. surge current, unidirectional polarity requirement, SMA package thermal resistance (RθJA = 120 °C/W), and compliance with J-STD-020 MSL level 1 reflow profile.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents <1 μA leakage at 11 V, but triggers avalanche conduction when reverse voltage exceeds 12.2 V (min VBR), limiting transient energy via low dynamic resistance (0.107 Ω). Its 600 W (10/1000 μs) and 4000 W (8/20 μs) pulse ratings support robust immunity against inductive switching and lightning-induced surges.
The device uses silicon planar junction technology with matte tin-plated leads solderable per J-STD-002, housed in UL 94 V-0 molded compound. Polarity is marked by cathode band; thermal performance relies on 5.0 mm × 5.0 mm PCB copper pads per terminal per datasheet test condition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 11 V - Maximum continuous reverse operating voltage before significant leakage; defines safe working margin below clamping threshold |
| VBR (min/max) | 12.2 V / 13.5 V at 1 mA - Avalanche onset range; determines minimum overvoltage triggering point in circuit protection design |
| VC at IPP | 17.2 V at 34.8 A (10/1000 μs) - Clamped voltage seen by protected IC during standardized surge; must be below downstream device's absolute max rating |
| PPPM (10/1000 μs) | 600 W - Peak transient energy handling capability under long-duration surge; sets upper limit for system-level surge test compliance |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard PCB pad layout; governs derating above TA = 25 °C per Fig. 2 |
| Polarity | Unidirectional - Blocks only reverse surges; requires correct orientation relative to DC bias; not suitable for AC line protection without external rectification |
| MSL Level | Level 1 per J-STD-020 - No floor life limitation; supports standard reflow up to 260 °C peak without baking preconditioning |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with cathode band marking; dimensions 4.50 mm × 2.79 mm × 2.20 mm (L × W × H); RoHS-compliant, halogen-free (M3 suffix), industrial grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Surge return path | Connected to lower-potential side of protected line (e.g., GND or negative rail); completes clamping path during reverse transient |
| Cathode | Reverse voltage sensing / Clamping node | Connected to higher-potential side (e.g., VCC or signal line); avalanche conduction begins here when V > VBR, shunting surge to anode |
Key Features
| Feature | Design Value |
|---|---|
| Clamping performance | 17.2 V VC at 34.8 A (10/1000 μs) enables reliable protection of 12 V logic and analog interfaces without overstressing downstream components |
| Low dynamic resistance | 0.107 Ω allows rapid voltage stabilization during surge, minimizing let-through energy into protected circuitry |
| Automated placement compatibility | Low-profile SMA package supports high-speed pick-and-place assembly with industry-standard feeders and vision alignment |
| Thermal reliability | 150 °C max junction temperature and MSL Level 1 rating ensure stable operation in industrial environments and compatibility with lead-free reflow |
| Leakage control | <1 μA ID at 11 V VWM prevents measurable loading on sensitive sensor bias networks or high-impedance signal paths |
Applications
| Industrial Sensor Interface Protection | Automotive Body Control Module (BCM) Power Input |
|---|---|
Use Scenario: Protecting 12 V supply rails feeding MEMS pressure sensors and Hall-effect position sensors in factory automation equipment exposed to relay coil flyback and motor drive noise. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VCC and GND, triggered within nanoseconds to clamp transients exceeding 12.2 V. Use Value: Limits let-through voltage to ≤17.2 V during 34.8 A surges, preventing latch-up or gate oxide damage in connected ASICs and microcontrollers. |
Use Scenario: Safeguarding 12 V input to BCM power management ICs subjected to load dump pulses and alternator ripple in passenger vehicles. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on main battery feed, absorbing energy before upstream fuse or DC-DC converter. Use Value: Withstands 600 W (10/1000 μs) surges while maintaining <1 μA leakage at nominal 12 V, preserving sleep-mode current budgets. |
| Telecom Line Card Signal Line Protection | Consumer Appliance Motor Driver Gate Protection |
Use Scenario: Shielding RS-485 transceiver I/O pins in base station remote units from ESD and induced surges on long cable runs. IC Role / Device Role / Timing Role: Point-of-entry TVS on differential pair, oriented with cathode toward positive line to clamp positive transients to GND. Use Value: 17.2 V clamping ensures transceiver inputs remain within ±25 V common-mode range while surviving 4 kV EFT bursts. |
Use Scenario: Guarding N-channel MOSFET gate-source terminals in washing machine motor inverters against Miller-induced spikes during high-di/dt switching. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) unidirectional TVS tied between gate and source, conducting only when VGS exceeds 12.2 V. Use Value: Prevents gate oxide rupture by limiting VGS to ≤17.2 V during 34.8 A transient events, extending MOSFET lifetime in harsh duty cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J11A-E3/5A | Same electrical specs, RoHS-compliant but not halogen-free; uses SnPb-free matte tin plating without whisker mitigation class 2 | Approved for general industrial use where halogen-free mandate is absent; not qualified for automotive or aerospace programs requiring halogen-free certification | Select SMA6J11A-E3/5A if halogen-free compliance is not required and cost sensitivity favors base RoHS variant |
| SMCJ11A-M3/57T | Higher power rating (1500 W, 10/1000 μs), larger SMC (DO-214AB) package, same VWM/VBR/VC specs; RθJA = 35 °C/W vs. 120 °C/W | Used where higher surge energy absorption is needed and board space permits larger footprint; superior thermal dissipation enables sustained operation at elevated ambient temperatures | Choose SMCJ11A-M3/57T when system-level surge testing exceeds 600 W or ambient temperature routinely exceeds 70 °C |
Compared with SMA6J11A-E3/5A, the SMA6J11AHM3/5A adds halogen-free compliance and JESD 201 class 2 whisker resistance, while SMCJ11A-M3/57T trades compact size for 2.5× higher pulse power and lower thermal resistance - making SMA6J11AHM3/5A optimal for space-constrained, environmentally regulated industrial designs.
Availability
SMA6J11AHM3/5A is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, telecom line card protection, and consumer appliance motor drivers requiring stable component supply, halogen-free compliance, and MSL Level 1 reflow readiness.
Supply support for SMA6J11AHM3/5A 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, TVS devices, and optoelectronics with emphasis on reliability, precision, and application-specific performance.
The SMA6J series is part of Vishay's Transient Voltage Suppressor portfolio, engineered for robust electrostatic discharge and surge immunity in space-constrained, high-reliability industrial and automotive systems.
FAQ
What is the maximum clamping voltage of the SMA6J11AHM3/5A at 34.8 A?
The SMA6J11AHM3/5A has a maximum clamping voltage (VC) of 17.2 V at 34.8 A peak pulse current with a 10/1000 μs waveform. This value is measured under standard test conditions (TA = 25 °C, mounted on 5.0 mm × 5.0 mm copper pads) and defines the highest voltage imposed on the protected circuit during that surge event. The SMA6J11AHM3/5A maintains this clamping performance across its specified operating temperature range.
Is the SMA6J11AHM3/5A suitable for bidirectional transient suppression?
No, the SMA6J11AHM3/5A is a unidirectional TVS diode and provides protection only against reverse-polarity transients. It conducts when the cathode is more positive than the anode by ≥12.2 V. For bidirectional protection, two SMA6J11AHM3/5A devices would need back-to-back configuration, or a dedicated bidirectional part like SMA6J11CA must be selected instead. The SMA6J11AHM3/5A datasheet explicitly states "Available in unidirectional polarity only."
What does the "M3" suffix indicate in SMA6J11AHM3/5A?
The "M3" suffix in SMA6J11AHM3/5A denotes halogen-free, RoHS-compliant construction with matte tin-plated leads qualified to JESD 201 class 2 for whisker resistance. It also signifies industrial-grade qualification and compliance with Vishay's material categorization standard (doc# 99912). This distinguishes it from the "E3" variant, which is RoHS-compliant but not halogen-free. The SMA6J11AHM3/5A meets strict environmental mandates for automotive and industrial end equipment.
Can the SMA6J11AHM3/5A withstand automotive load dump pulses?
The SMA6J11AHM3/5A is rated for 600 W peak pulse power with a 10/1000 μs waveform, which covers many ISO 7637-2 Pulse 5a/b load dump profiles at reduced amplitude or shorter duration. However, full 12 V system load dump (up to 60 V, 400 ms) exceeds its VWM and requires upstream filtering or a higher-voltage TVS. The SMA6J11AHM3/5A is appropriate for secondary protection after primary clamping stages in automotive BCMs, not as sole front-end defense.
What is the thermal resistance junction-to-ambient for the SMA6J11AHM3/5A?
The SMA6J11AHM3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on PCBs using the minimum recommended pad layout: 5.0 mm × 5.0 mm copper pads per terminal. This value assumes still air conditions and directly impacts power derating above TA = 25 °C - for example, at TA = 50 °C, its power dissipation is derated to 4.0 W. The SMA6J11AHM3/5A thermal performance is validated per Figure 2 in the official Vishay datasheet (Doc# 89460).
SMA6J11AHM3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 11V
- Voltage - Breakdown (Min):
- 12.2V
- Voltage - Clamping (Max) @ Ipp:
- 17.2V
- Current - Peak Pulse (10/1000µs):
- 34.8A
- Power - Peak Pulse:
- 600W
- 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)
SMA6J11AHM3/5A FAQ
1.How can I place an order for SMA6J11AHM3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J11AHM3/5A 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 SMA6J11AHM3/5A reliable?
The price and inventory of SMA6J11AHM3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J11AHM3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J11AHM3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J11AHM3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J11AHM3/5A?
SMA6J11AHM3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J11AHM3/5A 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 SMA6J11AHM3/5A?
For technical support, including SMA6J11AHM3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J11AHM3/5A requirements.
6.How does Aetrix verify that SMA6J11AHM3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J11AHM3/5A 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 SMA6J11AHM3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J11AHM3/5A?
All SMA6J11AHM3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J11AHM3/5A, 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 SMA6J11AHM3/5A part is unused and in its original packaging.
Return procedure for SMA6J11AHM3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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