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Vishay General Semiconductor - Diodes Division SMA5J15A-E3/61
- Part No.:
- SMA5J15A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J15A-E3/61.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,969
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Product details
Overview
SMA5J15A-E3/61 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), 16.7–18.5 V breakdown range (VBR), 24.4 V clamping voltage (VC) at 20.5 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J15A-E3/61 datasheet, SMA5J15A-E3/61 pinout, SMA5J15A-E3/61 application, or SMA5J15A-E3/61 equivalent, key selection criteria include unidirectional polarity, RoHS-compliant matte tin plating, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped crowbar device triggered by transient overvoltage events. Its glass-passivated junction ensures stable breakdown behavior and low incremental surge resistance, while its low-profile SMA package supports high-power density board layouts without compromising thermal dissipation (RθJA = 80 °C/W).
The device responds within picoseconds to transients induced by inductive load switching or ESD, clamping reverse surges up to 500 W without degradation. It is rated for continuous operation from −55 °C to +150 °C junction temperature and meets JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - Maximum steady-state reverse voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (min/max) | 16.7 V / 18.5 V - Measured at 1 mA test current; ensures predictable turn-on across production lot and temperature |
| VC @ IPPM | 24.4 V at 20.5 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on protected downstream circuitry |
| PPPM | 500 W - Peak pulse power handling capability; enables robust protection against IEC 61000-4-5 Level 4 surges |
| IFSM | 40 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports inrush current immunity in DC power rail applications |
| TJ max | +150 °C - Maximum junction temperature; allows reliable operation in under-hood automotive or enclosed industrial environments |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional polarity marked by cathode band. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H), with 2.54 mm lead pitch and matte tin-plated terminals solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-impedance return in unidirectional clamp configuration |
| Cathode | Reverse-biased terminal / surge input node | Connected to protected line (e.g., 12 V rail or sensor output); band-marked end |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables compact PCB layout and compatibility with standard pick-and-place equipment for high-volume manufacturing |
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage performance under thermal cycling and humidity stress |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without baking - simplifies SMT assembly logistics |
| 500 W peak pulse power | Provides single-event surge immunity exceeding IEC 61000-4-5 4 kV (line-earth) and 2 kV (line-line) requirements |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients in passenger vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power input and ground, activated only during overvoltage events. Use Value: Limits transient voltage to ≤24.4 V, preventing damage to 36 V-rated power management ICs and microcontrollers downstream. | Use Scenario: Shielding analog outputs of pressure or temperature sensors from ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: Reverse-biased transient shunt on signal line, conducting only when voltage exceeds 15 V stand-off. Use Value: Maintains signal integrity by clamping sub-100 ns ESD pulses to safe levels while adding <1 pF capacitance at 0 V bias. |
| DC-DC Converter Input Protection | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding buck converter inputs against 500 W surges caused by hot-plug events or upstream switching noise. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VIN rail, coordinated with upstream fuse and downstream ceramic filtering. Use Value: Absorbs energy without latch-up or parametric shift, enabling repeatable protection across >100,000 surge cycles. | Use Scenario: Front-end protection for PoE-powered Ethernet modules exposed to lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: First-stage unidirectional suppressor on DC feed line, preceding secondary TVS arrays and common-mode chokes. Use Value: Handles 20.5 A peak current at 24.4 V clamping, reducing stress on downstream polymer PTCs and silicon avalanche devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J15A-M3/61 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMA package | No functional difference; selected where halogen-free material compliance is mandated (e.g., EU public infrastructure projects) | Direct substitution if halogen-free certification is required; same footprint and thermal profile |
| SMA5J15CA-E3/61 | Bidirectional version with symmetric ±15 V stand-off and same 500 W rating; no polarity marking | Used where AC-coupled or dual-polarity signals require clamping in both directions (e.g., RS-485, CAN bus) | Select only when bidirectional clamping is needed; not interchangeable in unidirectional circuits due to lack of cathode reference |
Compared with SMA5J15A-E3/61, the M3 variant offers identical protection performance with halogen-free construction, while the 15CA variant provides symmetrical clamping but requires redesign of grounding and polarity-aware layout - making the E3/61 optimal for cost-sensitive, high-volume unidirectional DC rail protection.
Availability
SMA5J15A-E3/61 is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, and telecom line card development requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMA5J15A-E3/61 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, MOSFETs, and protection devices with emphasis on reliability, power density, and automotive qualification.
The SMA5J series is engineered for high-energy transient suppression in space-constrained applications, targeting automotive, industrial, and telecom markets where AEC-Q101 qualification, low clamping voltage, and automated assembly compatibility are critical.
FAQ
What is the clamping voltage of the SMA5J15A-E3/61 under a 10/1000 µs surge?
The SMA5J15A-E3/61 has a maximum clamping voltage (VC) 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 TA = 25 °C on minimum recommended copper pads and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA5J15A-E3/61 maintains this clamping performance across its specified operating temperature range.
Is the SMA5J15A-E3/61 RoHS-compliant and lead-free?
Yes, the SMA5J15A-E3/61 is RoHS-compliant and lead-free. The "E3" suffix denotes Vishay's commercial-grade, RoHS-compliant construction with matte tin-plated leads that meet J-STD-002 solderability requirements. It also passes JESD201 Class 2 whisker testing and is rated MSL Level 1 for reflow compatibility up to 260 °C peak temperature. The SMA5J15A-E3/61 contains no intentionally added lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE.
Can the SMA5J15A-E3/61 be used in bidirectional signal lines like RS-485?
No, the SMA5J15A-E3/61 is unidirectional and unsuitable for bidirectional signal lines such as RS-485 without additional circuitry. Its cathode-band marking and asymmetric IV curve mean it conducts only in reverse bias above VBR; forward conduction occurs at ~0.7 V, causing signal distortion. For RS-485 or CAN bus protection, use the bidirectional SMA5J15CA-E3/61 instead. The SMA5J15A-E3/61 must be applied with correct polarity alignment to avoid unintended conduction.
What is the maximum junction temperature rating for the SMA5J15A-E3/61?
The SMA5J15A-E3/61 has a maximum junction temperature (TJ) rating of +150 °C, with an operating and storage range from −55 °C to +150 °C. This rating supports deployment in under-hood automotive environments and enclosed industrial enclosures where ambient temperatures may exceed 100 °C. Thermal derating curves in the datasheet show usable pulse power decreases linearly above 25 °C ambient, ensuring predictable performance across the full range.
How does the SMA5J15A-E3/61 compare to SMAJ15A in terms of surge capability?
The SMA5J15A-E3/61 delivers 500 W peak pulse power, whereas the older SMAJ15A is rated for 400 W under the same 10/1000 µs waveform. This 25 % higher power rating translates to greater surge margin in demanding applications like automotive load dump. Both share the SMA (DO-214AC) package and similar VWM/VC values, but the SMA5J15A-E3/61 achieves improved energy handling via optimized chip geometry and lower incremental resistance - confirmed in Vishay's 88875 datasheet revision.
SMA5J15A-E3/61 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J15A-E3/61 FAQ
1.How can I place an order for SMA5J15A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J15A-E3/61 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 SMA5J15A-E3/61 reliable?
The price and inventory of SMA5J15A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J15A-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J15A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J15A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J15A-E3/61?
SMA5J15A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J15A-E3/61 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 SMA5J15A-E3/61?
For technical support, including SMA5J15A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J15A-E3/61 requirements.
6.How does Aetrix verify that SMA5J15A-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J15A-E3/61 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 SMA5J15A-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J15A-E3/61?
All SMA5J15A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J15A-E3/61, 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 SMA5J15A-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J15A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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