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Vishay General Semiconductor - Diodes Division SMA5J15AHM3/H
- Part No.:
- SMA5J15AHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J15AHM3/H.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,125
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Product details
Overview
SMA5J15AHM3/H from Vishay General Semiconductor is a unidirectional 500 W Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, with 15 V stand-off voltage (VWM), 16.7–18.5 V breakdown voltage (VBR at 1 mA), and 24.4 V clamping voltage (VC) at 20.5 A peak pulse current. It protects MOSFETs and ICs against inductive switching transients in automotive power electronics.
For engineers reviewing the SMA5J15AHM3/H datasheet, SMA5J15AHM3/H pinout, SMA5J15AHM3/H application, or SMA5J15AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction (HM3 suffix), 150 °C max junction temperature, and low incremental surge resistance for robust ESD and lightning surge immunity in harsh environments.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds VWM = 15 V. Its glass-passivated junction ensures stable breakdown behavior and fast response (<1 ns), while the SMA package supports automated SMT placement and meets MSL Level 1 (260 °C reflow).
Designed for transient suppression on DC power rails and signal lines, it delivers 500 W peak pulse power (10/1000 µs waveform) with thermal resistance RθJA = 80 °C/W. The HM3 suffix confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction - validated per JESD22-B102 solderability and JESD201 Class 2 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping begins; sets safe DC rail margin for 12 V automotive systems. |
| VBR (min/max) | 16.7 V / 18.5 V at 1 mA - guaranteed avalanche initiation window; ensures consistent turn-on across production lots and temperature. |
| VC @ IPPM | 24.4 V at 20.5 A - clamped voltage during 500 W transient; limits stress on downstream 24 V-rated components. |
| PPPM | 500 W - peak pulse power handling (10/1000 µs); supports ISO 7637-2 Pulse 1/2a/5a compliance testing. |
| IFSM | 40 A - non-repetitive forward surge rating (8.3 ms half-sine); enables protection of rectifier stages during load dump events. |
| TJ max | +150 °C - maximum junction temperature; allows operation in under-hood automotive environments without derating. |
| RθJA | 80 °C/W - junction-to-ambient thermal resistance on standard 5 mm × 5 mm copper pads; informs PCB thermal layout requirements. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads. Cathode indicated by band; polarity-critical for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to ground or low-side reference; completes clamping loop during overvoltage events. |
| Cathode | Reverse-biased terminal / protected line connection | Connected to the line being protected (e.g., battery rail); avalanche conduction occurs when cathode-to-anode voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; required for engine control, body electronics, and ADAS modules. |
| Halogen-free & RoHS-compliant (HM3) | Meets IEC 61249-2-21 and JEDEC J-STD-609A Class 1; eliminates brominated flame retardants for safer end-of-life processing. |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients; critical for protecting sensitive gate drivers and CAN transceivers. |
| MSL Level 1 (260 °C) | Enables single-reflow assembly without moisture sensitivity concerns; eliminates bake-out step in high-volume SMT lines. |
| Glass passivated junction | Improves long-term stability of VBR and leakage under thermal stress; reduces parameter drift over 15+ year automotive service life. |
Applications
| Automotive Load Dump Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Suppresses 120 V/100 ms load dump transients on vehicle battery rails per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery input and DC-DC converter input stage. Use Value: Limits voltage seen by upstream regulator to ≤24.4 V, preventing overvoltage shutdown or damage during alternator field decay. |
Use Scenario: Protects 24 V digital input channels in programmable logic controllers from relay coil flyback and ESD. IC Role / Device Role / Timing Role: Front-end transient suppressor on isolated optocoupler input side. Use Value: Clamps 1 kV ESD (IEC 61000-4-2) and 600 V ring wave (IEC 61000-4-5) within 1 ns, preserving signal integrity and channel isolation. |
| Automotive Sensor Power Rail | Telecom DC Power Feeds |
Use Scenario: Shields 5 V/3.3 V sensor supply lines (e.g., oxygen, pressure sensors) from coupled transients in adjacent harnesses. IC Role / Device Role / Timing Role: Localized TVS mounted directly at sensor connector or LDO input. Use Value: Maintains VWM = 15 V margin above nominal 12 V supply, enabling clean startup and stable ADC reference during ignition noise bursts. |
Use Scenario: Safeguards -48 V telecom power distribution boards against lightning-induced surges on central office feeds. IC Role / Device Role / Timing Role: Secondary-stage TVS after primary gas discharge tube (GDT), handling residual energy. Use Value: Delivers precise 24.4 V clamping at 20.5 A, coordinating with upstream GDT to achieve <100 ns total response and meet GR-1089-CORE Zone 3 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 |
|---|---|---|---|
| SMA5J15AHE3/H | Same electrical specs, but RoHS-compliant (E3) without halogen-free certification; no JESD201 Class 2 whisker test validation. | Approved for commercial/industrial use only; not AEC-Q101 certified - excluded from automotive safety-critical modules. | Select SMA5J15AHE3/H only for cost-sensitive non-automotive designs where halogen content and whisker resistance are not mandated. |
| SMC5J15AHM3 | Same VWM/VC, but SMC (DO-214AB) package - larger footprint, higher IPPM (32.5 A), lower RθJA (50 °C/W). | Better thermal performance and surge margin; requires PCB real estate increase (~30 % larger pad area) and may not fit tight-layout ECUs. | Choose SMC5J15AHM3 when system-level surge testing exceeds 500 W or ambient temperatures exceed 105 °C - otherwise SMA5J15AHM3/H offers optimal space/performance balance. |
Compared with SMA5J15AHE3/H, SMA5J15AHM3/H adds halogen-free compliance and AEC-Q101 qualification for automotive deployment; compared with SMC5J15AHM3, it trades thermal headroom and surge capacity for compact SMA footprint - making it ideal for space-constrained, thermally managed automotive modules requiring full qualification.
Availability
SMA5J15AHM3/H is available at Aetrix Electronics and suitable for automotive power management, industrial PLC I/O protection, and telecom DC feed protection requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for SMA5J15AHM3/H 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, efficiency, and automotive-grade qualification.
The SMA5J series was developed specifically for high-energy transient suppression in automotive and industrial power systems, balancing compact size, AEC-Q101 compliance, and 500 W surge capability in the industry-standard SMA package.
FAQ
What is the clamping voltage of the SMA5J15AHM3/H at its rated peak pulse current?
The SMA5J15AHM3/H has a maximum clamping voltage (VC) of 24.4 V at its rated peak pulse current (IPPM) of 20.5 A, measured under the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and ensures downstream components see limited overvoltage stress during transient events. The SMA5J15AHM3/H datasheet specifies this parameter in Table 1 under "ELECTRICAL CHARACTERISTICS".
Is the SMA5J15AHM3/H suitable for automotive applications?
Yes, the SMA5J15AHM3/H is AEC-Q101 qualified and explicitly designated for automotive use via its HM3 suffix, which denotes halogen-free, RoHS-compliant, and automotive-grade construction. It is validated for temperature cycling, highly accelerated life testing (HALT), and ESD per AEC-Q101 Rev D, making it appropriate for engine control units, body control modules, and ADAS power supplies. The SMA5J15AHM3/H meets these requirements without derating up to +150 °C junction temperature.
What does the "HM3" suffix mean in SMA5J15AHM3/H?
The "HM3" suffix in SMA5J15AHM3/H indicates halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance certification. It also confirms AEC-Q101 qualification and compatibility with lead-free reflow profiles (MSL Level 1, 260 °C peak). This suffix distinguishes it from E3 (RoHS only) and HE3 (AEC-Q101 + RoHS) variants, adding halogen-free compliance required by Tier 1 automotive OEMs and EU environmental directives.
How does the SMA5J15AHM3/H differ from the SMA5J15AHE3/H?
The SMA5J15AHM3/H and SMA5J15AHE3/H share identical electrical parameters (VWM, VBR, VC, PPPM) but differ in material compliance and qualification: HM3 adds halogen-free certification and JESD201 Class 2 whisker resistance, while HE3 provides AEC-Q101 and RoHS without halogen restrictions. As a result, SMA5J15AHM3/H is approved for stricter automotive platforms (e.g., VW TL 81300), whereas SMA5J15AHE3/H is limited to commercial/industrial use.
What is the thermal resistance of the SMA5J15AHM3/H, and how does it affect PCB layout?
The SMA5J15AHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's DO-214AC outline drawing. To maintain safe junction temperature under repeated 500 W pulses, designers must allocate sufficient copper area and consider thermal vias - undersized pads will cause premature thermal derating and reduced surge endurance. The SMA5J15AHM3/H datasheet specifies this in the "THERMAL CHARACTERISTICS" table.
SMA5J15AHM3/H 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/H FAQ
1.How can I place an order for SMA5J15AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J15AHM3/H 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/H reliable?
The price and inventory of SMA5J15AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J15AHM3/H is usually 5 days.
3.What payment methods are accepted for SMA5J15AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J15AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J15AHM3/H?
SMA5J15AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J15AHM3/H 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/H?
For technical support, including SMA5J15AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J15AHM3/H requirements.
6.How does Aetrix verify that SMA5J15AHM3/H is sourced from the original manufacturer or authorized distributors?
All SMA5J15AHM3/H 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/H meets industry standards.
7.What is the process for return or replacement of SMA5J15AHM3/H?
All SMA5J15AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J15AHM3/H, 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/H part is unused and in its original packaging.
Return procedure for SMA5J15AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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