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Vishay General Semiconductor - Diodes Division SMA5J15AHM3/I
- Part No.:
- SMA5J15AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J15AHM3/I.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,560
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Product details
Overview
SMA5J15AHM3/I 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 15 V stand-off voltage (VWM), 24.4 V maximum clamping voltage (VC) at 20.5 A peak pulse current (IPPM), 500 W peak pulse power (10/1000 µs), and operates from –55 °C to +150 °C. It is used to protect MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the SMA5J15AHM3/I datasheet, SMA5J15AHM3/I pinout, SMA5J15AHM3/I application, or SMA5J15AHM3/I equivalent, key selection criteria include clamping performance under 10/1000 µs transients, thermal resistance (RθJA = 80 °C/W), AEC-Q101 qualification status, unidirectional polarity marking, and halogen-free RoHS compliance per HM3 suffix.
Technical Context
This TVS diode uses a glass-passivated silicon junction optimized for fast response (<1 ps) and low incremental surge resistance. Its breakdown voltage (VBR) is specified at 16.7–18.5 V with 1 mA test current, ensuring reliable triggering above 15 V nominal operation while maintaining tight leakage (<1 µA at VWM).
The device is rated for 40 A non-repetitive forward surge (IFSM, 8.3 ms half-sine) and exhibits typical junction-to-lead thermal resistance of 25 °C/W. Mounting on 5.0 mm × 5.0 mm copper pads is required to sustain full 500 W pulse rating per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC bias margin for protected circuitry. |
| VC @ IPPM | 24.4 V at 20.5 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream components. |
| PPPM | 500 W - Peak pulse power handling capability; enables robust protection against IEC 61000-4-5 Level 4 surges when properly mounted. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance; requires minimum 5.0 mm × 5.0 mm copper pad area per terminal for full power derating. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| AEC-Q101 | Qualified - Meets stress-test requirements for automotive electronics per JESD22-A108; enabled by HM3 suffix. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode indicated by band; polarity critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return); conducts during positive surge on cathode side. |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 12 V rail or sensor output); avalanches to clamp overvoltage toward anode. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | HM3 suffix confirms compliance with IEC 61249-2-21 and JEDEC J-STD-201 Class 2 whisker resistance. |
| MSL Level 1 moisture sensitivity | Rated for floor life unlimited at ≤30 °C/85 % RH; no bake required prior to reflow per J-STD-020. |
| Low incremental surge resistance | Enables tighter VC–VBR margin (ΔV = 7.7 V), reducing let-through energy during fast transients. |
| Fast response time | Sub-nanosecond avalanche turn-on ensures clamping activation before sensitive ICs experience overstress. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: 12 V battery-supplied ECUs exposed to load-dump and inductive switching transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges up to ±100 V. Use Value: Limits rail voltage to ≤24.4 V during 500 W transients, preventing damage to 3.3 V/5 V regulators and CAN transceivers. |
Use Scenario: Analog output lines (e.g., 4–20 mA or 0–5 V) from pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Point-of-entry TVS on sensor PCB, shunting ESD (IEC 61000-4-2) and cable discharge events. Use Value: Maintains signal integrity with <1 µA leakage at 15 V, avoiding offset errors in precision measurement circuits. |
| DC-DC Converter Input Stage | Motor Drive Gate Driver Protection |
Use Scenario: Input stage of buck converters in telecom power systems subject to lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp ahead of input capacitor and controller IC. Use Value: Absorbs 500 W pulses without degradation, preserving converter uptime and eliminating need for redundant clamping stages. |
Use Scenario: Protection of high-side gate driver inputs in BLDC motor inverters where Miller spikes exceed 20 V. IC Role / Device Role / Timing Role: Fast-clamping diode tied between gate and source to limit dv/dt-induced false turn-on. Use Value: Sub-ns response prevents unintended IGBT/MOSFET conduction, improving system reliability under noisy switching conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J15AHE3/I | Same electrical specs; RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification. | Approved for commercial/industrial use only; not certified for automotive under-hood deployment. | Select when halogen-free content and automotive qualification are not required; lower cost alternative. |
| SMCJ15A | Higher package power rating (1500 W), larger SMC (DO-214AB) footprint; VC = 24.4 V same, but RθJA = 20 °C/W. | Requires more PCB area; suited for higher-energy surges where SMA5J15AHM3/I may require parallel staging. | Choose when system-level surge testing exceeds 500 W or when thermal budget demands lower RθJA. |
Compared with SMA5J15AHM3/I, SMA5J15AHE3/I offers identical clamping and surge ratings but omits halogen-free and AEC-Q101 compliance, while SMCJ15A delivers triple the pulse power in a larger package-making SMA5J15AHM3/I optimal for space-constrained, automotive-grade 500 W protection.
Availability
SMA5J15AHM3/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, and DC-DC converter input stages requiring stable component supply with guaranteed halogen-free and AEC-Q101-compliant sourcing.
Supply support for SMA5J15AHM3/I 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, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMA5J series was developed to deliver high-power-density TVS protection in compact surface-mount packages for automotive and industrial applications demanding AEC-Q101 compliance and halogen-free materials.
FAQ
What is the clamping voltage of the SMA5J15AHM3/I under a 10/1000 µs surge?
The SMA5J15AHM3/I clamps to a maximum of 24.4 V when subjected to its rated peak pulse current of 20.5 A using the standard 10/1000 µs waveform. This value is measured with the device mounted on 5.0 mm × 5.0 mm copper pads per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events.
Is the SMA5J15AHM3/I qualified for automotive applications?
Yes, the SMA5J15AHM3/I is AEC-Q101 qualified, as confirmed by the HM3 suffix and Vishay documentation. It meets stress-test requirements for automotive electronics including temperature cycling, humidity bias, and mechanical shock-making it suitable for under-hood and body-control module deployments.
What does the "HM3" suffix indicate for SMA5J15AHM3/I?
The "HM3" suffix denotes that the SMA5J15AHM3/I is halogen-free, RoHS-compliant, and AEC-Q101 qualified. It also specifies JESD201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity-critical for high-reliability automotive and industrial reflow assembly processes.
How does the SMA5J15AHM3/I differ from the SMA5J15A-E3/61 variant?
The SMA5J15AHM3/I shares identical electrical characteristics with SMA5J15A-E3/61 but adds halogen-free construction and AEC-Q101 qualification. The E3 variant is RoHS-compliant and commercial-grade only, lacking both halogen-free certification and automotive qualification required for safety-critical vehicle systems.
What is the recommended PCB layout for optimal thermal performance of SMA5J15AHM3/I?
To achieve full 500 W pulse rating, the SMA5J15AHM3/I must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per Vishay's datasheet Fig. 2 derating curve. Thermal vias under pads and internal ground planes further reduce RθJA below the typical 80 °C/W value.
SMA5J15AHM3/I 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):
- 15V
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 24.4V
- Current - Peak Pulse (10/1000µs):
- 20.5A
- 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)
SMA5J15AHM3/I FAQ
1.How can I place an order for SMA5J15AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J15AHM3/I 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 SMA5J15AHM3/I reliable?
The price and inventory of SMA5J15AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J15AHM3/I is usually 5 days.
3.What payment methods are accepted for SMA5J15AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J15AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J15AHM3/I?
SMA5J15AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J15AHM3/I 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 SMA5J15AHM3/I?
For technical support, including SMA5J15AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J15AHM3/I requirements.
6.How does Aetrix verify that SMA5J15AHM3/I is sourced from the original manufacturer or authorized distributors?
All SMA5J15AHM3/I 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 SMA5J15AHM3/I meets industry standards.
7.What is the process for return or replacement of SMA5J15AHM3/I?
All SMA5J15AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J15AHM3/I, 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 SMA5J15AHM3/I part is unused and in its original packaging.
Return procedure for SMA5J15AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J15AHM3/I Tags
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