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Vishay General Semiconductor - Diodes Division SMA5J15AHM3_A/H
- Part No.:
- SMA5J15AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J15AHM3_A/H.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,328
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Product details
Overview
SMA5J15AHM3_A/H 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 clamping voltage (VC) at 20.5 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J15AHM3_A/H datasheet, SMA5J15AHM3_A/H pinout, SMA5J15AHM3_A/H application, or SMA5J15AHM3_A/H equivalent, key selection criteria include clamping performance under 20.5 A surge, thermal resistance (RθJA = 80 °C/W), AEC-Q101 qualification status, and halogen-free RoHS compliance per ordering code HM3.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its 16.7–18.5 V breakdown range (VBR) at 1 mA test current. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time to transients induced by inductive switching or ESD events.
Designed for surface-mount automated placement, it meets MSL level 1 (260 °C reflow peak) and delivers 500 W surge handling on 0.2" × 0.2" copper pads. The cathode band identifies polarity, and its DO-214AC footprint supports standard PCB layout practices for power rail protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 16.7 V / 18.5 V - breakdown occurs within this range at 1 mA, defining turn-on threshold |
| VC @ IPPM | 24.4 V at 20.5 A - clamped voltage during 10/1000 μs surge, limiting stress on downstream components |
| PPPM | 500 W - peak transient power dissipation capability under standardized surge waveform |
| RθJA | 80 °C/W - thermal resistance from junction to ambient, critical for derating above 25 °C |
| TJ max | +150 °C - maximum allowable junction temperature, supporting operation in under-hood automotive environments |
| ID @ VWM | <1.0 μA - low leakage preserves efficiency in always-on power rails and battery-backed circuits |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Cathode identified by black band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return path) in unidirectional configuration |
| Cathode | Reverse-biased clamping node | Connected to protected line (e.g., 12 V rail); band-marked end absorbs positive transients |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free & RoHS-compliant | HM3 suffix confirms full compliance with environmental standards for automotive and industrial production |
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance |
| Low incremental surge resistance | Enables tighter clamping (24.4 V at 20.5 A), reducing voltage overshoot on sensitive loads |
| MSL Level 1 rating | Supports single-reflow assembly without moisture sensitivity concerns (peak 260 °C) |
| Glass-passivated junction | Ensures long-term stability of VBR and leakage across temperature and lifetime |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines in engine control units (ECUs) against load dump and alternator transients. IC Role / Device Role: Unidirectional TVS placed between battery rail and DC-DC input to clamp surges up to ISO 7637-2 Pulse 5a. Use Value: Clamps to 24.4 V at 20.5 A, preventing overvoltage damage to upstream regulators and microcontrollers. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors from ESD and cable discharge events. IC Role / Device Role: TVS mounted at connector entry point to shunt transients before reaching precision amplifier or ADC front-end. Use Value: Sub-1 μA leakage at 15 V ensures minimal impact on loop accuracy; fast response limits transient duration. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Line Protection |
Use Scenario: Safeguarding AC/DC adapter primary-side rectifier outputs against surge coupling from mains or lightning-induced spikes. IC Role / Device Role: TVS placed across bulk capacitor to absorb repetitive line transients per IEC 61000-4-5 Level 3. Use Value: 500 W PPPM rating enables robust handling of multiple 10/1000 μs surges without degradation. | Use Scenario: Protecting -48 V DC feeder lines in base station power distribution against induced surges from nearby lightning strikes. IC Role / Device Role: Unidirectional clamp referenced to system ground, absorbing positive-going transients on negative-rail infrastructure. Use Value: AEC-Q101 qualification provides confidence in long-term field reliability under harsh telecom environmental stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J15AHE3_A/H | Same electrical specs, but RoHS-compliant commercial grade (not halogen-free); no AEC-Q101 qualification | Suitable for non-automotive industrial or consumer use where halogen-free or automotive qualification not required | Select SMA5J15AHM3_A/H when halogen-free content and AEC-Q101 validation are mandatory |
| SMA6J15A | 600 W PPPM rating, higher IPPM (24.5 A), same VWM/VBR/VC; larger SMA package variant (DO-214AC same outline but different internal construction) | Better suited for systems requiring margin beyond 500 W, e.g., heavy-duty industrial motor drives | Choose SMA6J15A only if design requires >500 W surge headroom and layout allows verification of thermal performance |
Compared with SMA5J15AHE3_A/H, the SMA5J15AHM3_A/H adds halogen-free materials and AEC-Q101 qualification without sacrificing clamping or thermal performance; versus SMA6J15A, it trades 100 W surge capacity for tighter cost and space constraints in validated automotive modules.
Availability
SMA5J15AHM3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, and telecom DC power systems requiring stable component supply with halogen-free and AEC-Q101-compliant transient protection.
Supply support for SMA5J15AHM3_A/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, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered for high-power-density surge suppression in space-constrained automotive, industrial, and telecom power systems where consistent clamping and long-term stability are critical.
FAQ
What is the clamping voltage of the SMA5J15AHM3_A/H under a 10/1000 μs surge?
The SMA5J15AHM3_A/H clamps to a maximum of 24.4 V when subjected to its rated peak pulse current of 20.5 A using the standardized 10/1000 μs waveform. This value is measured at the device terminals under specified test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and defines the upper voltage limit imposed on protected circuitry during transient events.
Is the SMA5J15AHM3_A/H qualified for automotive applications?
Yes, the SMA5J15AHM3_A/H is AEC-Q101 qualified, as confirmed by its HM3 suffix and documentation in Vishay's official datasheet (Document Number: 88875, Revision: 09-Jan-2024). This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and surge endurance - making SMA5J15AHM3_A/H suitable for under-hood and chassis-mounted automotive electronics.
What does the "HM3" suffix mean in SMA5J15AHM3_A/H?
The "HM3" suffix in SMA5J15AHM3_A/H indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from E3 (RoHS-compliant commercial) and HE3 (RoHS + AEC-Q101, but not halogen-free). The "_A/H" denotes revision level and packaging format (7" tape and reel, 1800 units per reel).
Can the SMA5J15AHM3_A/H be used in bidirectional configurations?
No, the SMA5J15AHM3_A/H is a unidirectional TVS diode, as indicated by the absence of "CA" in its part number and its cathode band marking. Bidirectional variants (e.g., SMA5J15CA) are explicitly designated with the "CA" suffix and lack polarity markings; using SMA5J15AHM3_A/H in reverse-biased AC applications would result in forward conduction and failure.
What is the maximum junction temperature rating for the SMA5J15AHM3_A/H?
The SMA5J15AHM3_A/H has a maximum junction temperature (TJ max) of +150 °C, as specified in the Vishay datasheet. This rating enables reliable operation in high-ambient environments such as automotive engine compartments or enclosed industrial enclosures, provided thermal design accounts for RθJA = 80 °C/W and appropriate PCB copper area is used.
SMA5J15AHM3_A/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:
- Active
- 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_A/H FAQ
1.How can I place an order for SMA5J15AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J15AHM3_A/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_A/H reliable?
The price and inventory of SMA5J15AHM3_A/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_A/H is usually 5 days.
3.What payment methods are accepted for SMA5J15AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J15AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J15AHM3_A/H?
SMA5J15AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J15AHM3_A/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_A/H?
For technical support, including SMA5J15AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J15AHM3_A/H requirements.
6.How does Aetrix verify that SMA5J15AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All SMA5J15AHM3_A/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_A/H meets industry standards.
7.What is the process for return or replacement of SMA5J15AHM3_A/H?
All SMA5J15AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J15AHM3_A/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_A/H part is unused and in its original packaging.
Return procedure for SMA5J15AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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