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Vishay General Semiconductor - Diodes Division SMA6J17AHM3/5A
- Part No.:
- SMA6J17AHM3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J17AHM3/5A.pdf
- Description:
- TVS DIODE 17VWM 26.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,596
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Product details
Overview
SMA6J17AHM3/5A 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 a 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR at IT = 1 mA), 31.4 V maximum clamping voltage at 111 A (10/1000 µs), and 600 W peak pulse power rating - deployed to protect MOSFETs and ICs in industrial power supplies.
For engineers reviewing the SMA6J17AHM3/5A datasheet, SMA6J17AHM3/5A pinout, SMA6J17AHM3/5A application, or SMA6J17AHM3/5A equivalent, key selection criteria include clamping voltage margin vs. protected device VDS/VDD, IFSM surge capability for inductive turn-off events, thermal resistance (RθJA = 120 °C/W), and halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds VBR and limiting transient energy via low dynamic resistance (RD = 0.259 Ω). Its junction temperature range spans –55 °C to +150 °C, with derating applied above TA = 25 °C per Fig. 2.
It meets J-STD-020 MSL Level 1 moisture sensitivity, supports automated placement, and uses matte tin-plated leads solderable per J-STD-002. The cathode band denotes polarity, and its DO-214AC outline requires 5.0 mm × 5.0 mm copper pads per terminal for rated PPPM performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before leakage rises; sets upper limit for normal circuit operation. |
| VBR min/max | 18.9 V / 20.9 V at IT = 1 mA - Confirmed avalanche onset range; ensures predictable triggering across production lot. |
| VC at IPP | 31.4 V at 111 A (10/1000 µs) - Clamped voltage seen by protected device during standard lightning surge test. |
| PPPM (10×1000 µs) | 600 W - Peak transient energy absorption capacity under IEC 61000-4-5 waveform conditions. |
| IFSM | 50 A - Non-repetitive forward surge current handling; critical for inductive load switching recovery paths. |
| RθJA | 120 °C/W - Junction-to-ambient thermal resistance on standard PCB pad layout; determines power derating above 25 °C. |
| Polarity | Unidirectional - Blocks reverse voltage only; requires correct orientation relative to protected line's DC bias. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant (M3 suffix), with matte tin-plated leads and cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to lower-potential side of protected line (e.g., GND or source); completes clamping loop during overvoltage. |
| Cathode | Reverse-biased clamping node | Connected to higher-potential side (e.g., VBUS or drain); avalanche conduction begins here when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Clamping performance | VC = 31.4 V at 111 A (10/1000 µs) enables robust protection of 24 V systems with ≥5 V margin to MOSFET VDS(max). |
| Thermal reliability | RθJA = 120 °C/W with defined 5.0 mm × 5.0 mm pad layout ensures stable operation up to TJ = 150 °C in enclosed enclosures. |
| Manufacturing compatibility | MSL Level 1 rating and matte tin plating support lead-free reflow without preconditioning or special handling. |
| Environmental compliance | M3 suffix certifies halogen-free, RoHS-compliant construction meeting IPC-J-STD-201 Class 2 whisker resistance. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
Use Scenario: Protection of N-channel MOSFET gate drivers against inductive kickback from solenoid valves and relay coils. IC Role / Device Role / Timing Role: Unidirectional TVS placed between gate driver output and MOSFET gate, clamping negative transients below –0.3 V. Use Value: Prevents gate oxide damage by limiting VGS reverse stress to < |31.4 V| while maintaining fast response (< 1 ns) to sub-microsecond spikes. |
Use Scenario: Input line protection for LIN bus transceivers exposed to load dump and jump-start surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBAT-supplied LIN PHY supply rail, absorbing 600 W pulses without latch-up. Use Value: Maintains 17 V VWM margin above nominal 12 V system, enabling reliable operation through ISO 7637-2 Pulse 1/2a/5a stress profiles. |
| Telecom Power Supplies | Consumer Appliance Control Boards |
Use Scenario: Secondary-side DC bus protection in AC/DC adapters powering PoE injectors and base stations. IC Role / Device Role / Timing Role: Clamp device on +24 V or +48 V output rail, shunting surge current away from DC-DC controller ICs. Use Value: 31.4 V VC ensures downstream 36 V-rated regulators remain within absolute maximum ratings during 10/1000 µs transients. |
Use Scenario: ESD and surge suppression on microcontroller I/O lines connected to front-panel buttons and sensors. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on 3.3 V or 5 V signal rails, placed adjacent to connector entry points. Use Value: 0.2 µA ID at VWM preserves signal integrity on high-impedance MCU inputs while delivering 600 W transient immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J17AHE3/5A | E3 suffix: RoHS-compliant but not halogen-free; same electrical specs and package. | Acceptable where halogen-free requirement is not mandated (e.g., non-EU consumer goods). | Select SMA6J17AHM3/5A for automotive or industrial programs requiring IPC-1752A-compliant material declarations. |
| SMC6J17A-M3/5A | SMC (DO-214AB) package: larger footprint, RθJA = 40 °C/W, 1500 W PPPM (10×1000 µs). | Used where higher surge energy handling or improved thermal dissipation is required, accepting larger board area. | Choose SMA6J17AHM3/5A when space-constrained layouts demand SMA footprint and 600 W is sufficient for system-level threat model. |
Compared with SMA6J17AHE3/5A, SMA6J17AHM3/5A adds halogen-free compliance without sacrificing electrical performance; versus SMC6J17A-M3/5A, it trades 2.5× lower PPPM and higher thermal resistance for 40 % smaller PCB area and compatible pick-and-place tooling.
Availability
SMA6J17AHM3/5A is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supplies requiring stable component supply, halogen-free compliance, and MSL Level 1 manufacturability.
Supply support for SMA6J17AHM3/5A 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 supplier of discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and application-specific performance.
The SMA6J series is part of Vishay's Transient Voltage Suppressor portfolio, engineered for robust electrostatic and surge protection in space-constrained, high-reliability power and interface circuits.
FAQ
What is the clamping voltage of SMA6J17AHM3/5A under a 10/1000 µs surge?
The SMA6J17AHM3/5A exhibits a maximum clamping voltage (VC) of 31.4 V when subjected to a 10/1000 µs waveform at IPP = 111 A. This value is measured per the test conditions specified in the Vishay datasheet (Document Number: 89460), using the recommended PCB pad layout. The clamping voltage defines the peak voltage imposed on protected circuitry during transient events, and SMA6J17AHM3/5A maintains this specification across its qualified temperature range.
Does SMA6J17AHM3/5A support lead-free reflow soldering?
Yes, SMA6J17AHM3/5A supports lead-free reflow soldering. It is rated MSL Level 1 per J-STD-020, with a maximum peak temperature of 260 °C, and features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102. The M3 suffix confirms halogen-free, RoHS-compliant construction, making SMA6J17AHM3/5A suitable for standard Pb-free assembly processes without preconditioning.
How does the thermal resistance of SMA6J17AHM3/5A affect its power derating?
SMA6J17AHM3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 5.0 mm × 5.0 mm copper pads per terminal. At ambient temperatures above 25 °C, its power dissipation must be linearly derated - for example, at TA = 50 °C, PD drops to 4.0 W. This derating curve is documented in Figure 2 of the datasheet and directly impacts sustained surge repetition rate and thermal safety margin in enclosed designs.
Is SMA6J17AHM3/5A unidirectional or bidirectional?
SMA6J17AHM3/5A is a unidirectional Transient Voltage Suppressor. Its electrical characteristics - including VBR, VWM, and VC - are specified only for reverse-bias operation, with polarity indicated by a cathode band. It does not provide symmetrical clamping in both directions and must be oriented correctly in-circuit to protect against negative-going transients on positively biased lines.
What is the peak surge current rating of SMA6J17AHM3/5A for an 8/20 µs waveform?
For an 8/20 µs current waveform, SMA6J17AHM3/5A supports a peak pulse current (IPP) of 295 A, derived from its 4000 W peak pulse power rating and clamping voltage behavior. This rating assumes proper PCB layout (5.0 mm × 5.0 mm pads) and is validated per the test methodology in the Vishay datasheet. The 8/20 µs rating reflects immunity to fast-rising surges such as those defined in IEC 61000-4-5.
SMA6J17AHM3/5A 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 26.7V
- Current - Peak Pulse (10/1000µs):
- 22.5A
- 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)
SMA6J17AHM3/5A FAQ
1.How can I place an order for SMA6J17AHM3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J17AHM3/5A 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 SMA6J17AHM3/5A reliable?
The price and inventory of SMA6J17AHM3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J17AHM3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J17AHM3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J17AHM3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J17AHM3/5A?
SMA6J17AHM3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J17AHM3/5A 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 SMA6J17AHM3/5A?
For technical support, including SMA6J17AHM3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J17AHM3/5A requirements.
6.How does Aetrix verify that SMA6J17AHM3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J17AHM3/5A 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 SMA6J17AHM3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J17AHM3/5A?
All SMA6J17AHM3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J17AHM3/5A, 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 SMA6J17AHM3/5A part is unused and in its original packaging.
Return procedure for SMA6J17AHM3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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