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Vishay General Semiconductor - Diodes Division SMA6J15AHM3/5A
- Part No.:
- SMA6J15AHM3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA6J15AHM3/5A.pdf
- Description:
- TVS DIODE 15VWM 23.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,252
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Product details
Overview
SMA6J15AHM3/5A from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping inductive switching and lightning-induced transients on power and signal lines. It features 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR), 23.6 V max clamping voltage at 25.4 A (10/1000 μs), 600 W peak pulse power, and operates from –55 °C to +150 °C junction temperature.
For engineers reviewing the SMA6J15AHM3/5A datasheet, SMA6J15AHM3/5A pinout, SMA6J15AHM3/5A application, or SMA6J15AHM3/5A equivalent, key selection criteria include clamping voltage margin vs. protected IC VDD, unidirectional polarity compatibility with DC-biased lines, thermal resistance (RθJA = 120 °C/W), and MSL Level 1 moisture sensitivity for reflow compatibility.
Technical Context
This TVS diode uses an avalanche breakdown mechanism to clamp transient overvoltages above its VBR threshold while maintaining low dynamic resistance (RD = 0.201 Ω). Its unidirectional configuration allows operation only in reverse bias, making it suitable for DC power rail protection where forward conduction is not required.
The device delivers 600 W peak pulse power under 10/1000 μs waveform and 4000 W under 8/20 μs waveform, with leakage current ≤0.2 μA at 15 V stand-off. Thermal performance is defined by RθJA = 120 °C/W and RθJL = 25 °C/W, requiring PCB copper pad area per datasheet recommendation (5.0 mm × 5.0 mm per terminal) for rated power dissipation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for protected line operating voltage. |
| VBR min/max | 16.7 V / 18.5 V at IT = 1 mA - Confirmed breakdown range ensures reliable triggering without premature conduction. |
| VC @ IPP | 23.6 V at 25.4 A (10/1000 μs) - Clamping voltage defines worst-case overvoltage seen by downstream circuitry. |
| PPPM (10/1000 μs) | 600 W - Sustained transient energy handling capability under standard surge waveform. |
| ID @ VWM | ≤0.2 μA - Ultra-low leakage preserves power integrity on low-current sensor or standby rails. |
| TJ max | +150 °C - Enables use in under-hood automotive, industrial motor drives, and high-ambient environments. |
| RθJA | 120 °C/W - Requires minimum 5.0 mm × 5.0 mm copper pads per terminal to achieve rated power derating. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional polarity with cathode indicated by color band. Matte tin-plated leads, RoHS-compliant and halogen-free (M3 suffix), MSL Level 1, LF peak 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or lowest potential point; completes clamping path during transient events. |
| Cathode | Protected line interface | Connected to line being protected (e.g., 12 V rail, sensor output); conducts avalanche current when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional polarity | Enables integration on DC-biased lines without forward conduction interference; eliminates need for series blocking diode. |
| MSL Level 1 rating | Supports standard Pb-free reflow profiles up to 260 °C peak without baking; reduces manufacturing complexity. |
| Low dynamic resistance (RD) | 0.201 Ω minimizes clamping voltage rise under high di/dt surges, improving protection margin for fast transients. |
| Halogen-free & RoHS-compliant (M3) | Fulfills environmental compliance requirements for industrial, telecom, and consumer end equipment without performance trade-off. |
| UL 94 V-0 molding compound | Ensures flame retardancy in enclosed enclosures and high-reliability systems per safety standards. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power input and local regulator input. Use Value: 23.6 V clamping voltage ensures downstream LDOs and microcontrollers remain within absolute maximum ratings during ISO 7637-2 Pulse 5a events. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-leakage (≤0.2 μA) transient suppressor on 0–5 V or 4–20 mA signal paths. Use Value: Sub-microamp leakage avoids offset errors in precision instrumentation; 120 °C/W RθJA supports compact PCB layouts near heat sources. |
| Telecom DC Power Input Protection | Consumer USB Power Delivery Interface |
Use Scenario: Safeguarding PoE-powered switches and media converters from induced surges on 48 V DC inputs. IC Role / Device Role / Timing Role: Primary clamping element upstream of DC-DC converter input filter. Use Value: 600 W (10/1000 μs) and 4000 W (8/20 μs) ratings meet IEC 61000-4-5 Level 3/4 surge immunity requirements. |
Use Scenario: Adding secondary overvoltage protection on USB-C VBUS lines after primary protection stage. IC Role / Device Role / Timing Role: Fast-response TVS with 25.4 A IPP capacity to absorb residual transients escaping upstream protection. Use Value: SMA package enables placement directly at connector; 15 V VWM aligns with USB PD 3.0 15 V profile without false triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA6J15A-E3/5A | Same electrical specs, RoHS-compliant but not halogen-free; uses matte tin plating meeting J-STD-002. | Acceptable where halogen-free requirement is not mandated (e.g., non-EU commercial gear). | Select SMA6J15A-E3/5A for cost-sensitive designs without halogen-free certification needs. |
| SMAJ15A-M3/5A | Lower PPPM (400 W vs. 600 W), same VWM/VBR/VC, identical SMA package and M3 suffix. | Suitable for lower-energy transients (e.g., IEC 61000-4-2 ESD only), not recommended for IEC 61000-4-5 surge. | Choose SMAJ15A-M3/5A only if system-level testing confirms 400 W rating suffices; verify clamping margin at full surge current. |
Compared with SMA6J15AHM3/5A, the E3 variant trades halogen-free compliance for slightly lower cost while retaining full 600 W surge capability; the SMAJ15A-M3/5A offers footprint compatibility but requires careful validation due to 33 % lower peak pulse power rating.
Availability
SMA6J15AHM3/5A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor signal line protection, and telecom DC power input protection requiring stable component supply across multi-year production cycles.
Supply support for SMA6J15AHM3/5A 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 and ruggedized packaging.
The SMA6JxxA family is engineered for high-energy transient suppression in harsh environments-designed to protect sensitive electronics in automotive, industrial, and telecom infrastructure against inductive switching and lightning surges.
FAQ
What is the clamping voltage of SMA6J15AHM3/5A at 25.4 A peak pulse current?
The SMA6J15AHM3/5A has a maximum clamping voltage (VC) of 23.6 V when subjected to a 10/1000 μs waveform at 25.4 A peak pulse current. This value is measured per the test conditions specified in the Vishay datasheet (Document Number: 89460, Rev. 09-Jan-2024) and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA6J15AHM3/5A achieves this with a dynamic resistance of 0.201 Ω.
Is SMA6J15AHM3/5A compatible with lead-free reflow soldering processes?
Yes, SMA6J15AHM3/5A is qualified for lead-free reflow soldering with a maximum peak temperature of 260 °C and meets MSL Level 1 per J-STD-020. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102 for solderability, and the M3 suffix confirms halogen-free and RoHS-compliant construction. No pre-baking is required prior to assembly.
How does the leakage current of SMA6J15AHM3/5A affect low-power sensor circuits?
The SMA6J15AHM3/5A exhibits ≤0.2 μA reverse leakage current at its 15 V stand-off voltage (VWM), making it suitable for low-power sensor interfaces where minimal loading is critical. This ultra-low ID avoids measurable offset or drift in precision analog signal chains, such as those found in 4–20 mA transmitters or battery-operated IoT sensor nodes powered from regulated 3.3 V or 5 V rails.
Can SMA6J15AHM3/5A be used in bidirectional transient protection applications?
No, SMA6J15AHM3/5A is strictly unidirectional and must not be used for bidirectional protection. Its design provides avalanche clamping only in reverse bias; forward conduction begins at ~3.5 V (VF = 3.5 V at IF = 25 A), which is insufficient for symmetrical AC or data-line protection. For bidirectional applications, Vishay's SMBJ15CA or SMCJ15CA families are appropriate alternatives.
What is the thermal resistance from junction to ambient for SMA6J15AHM3/5A, and how does it impact layout?
The SMA6J15AHM3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W, measured with 5.0 mm × 5.0 mm copper pads per terminal per the Vishay datasheet. To achieve rated power dissipation (4 W at TA = 50 °C), PCB layout must replicate this pad area; reducing pad size increases junction temperature and de-rates pulse power capability proportionally per Figure 2 in Document 89460.
SMA6J15AHM3/5A 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 23.6V
- Current - Peak Pulse (10/1000µs):
- 25.4A
- 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)
SMA6J15AHM3/5A FAQ
1.How can I place an order for SMA6J15AHM3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA6J15AHM3/5A 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 SMA6J15AHM3/5A reliable?
The price and inventory of SMA6J15AHM3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA6J15AHM3/5A is usually 5 days.
3.What payment methods are accepted for SMA6J15AHM3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA6J15AHM3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA6J15AHM3/5A?
SMA6J15AHM3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA6J15AHM3/5A 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 SMA6J15AHM3/5A?
For technical support, including SMA6J15AHM3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA6J15AHM3/5A requirements.
6.How does Aetrix verify that SMA6J15AHM3/5A is sourced from the original manufacturer or authorized distributors?
All SMA6J15AHM3/5A 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 SMA6J15AHM3/5A meets industry standards.
7.What is the process for return or replacement of SMA6J15AHM3/5A?
All SMA6J15AHM3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA6J15AHM3/5A, 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 SMA6J15AHM3/5A part is unused and in its original packaging.
Return procedure for SMA6J15AHM3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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