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Vishay General Semiconductor - Diodes Division SMA5J15AHE3/5A
- Part No.:
- SMA5J15AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J15AHE3/5A.pdf
- Description:
- TVS DIODE 15VWM 24.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,580
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Product details
Overview
SMA5J15AHE3/5A 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 voltage (VBR), 24.4 V clamping voltage at 20.5 A peak pulse current, and 500 W peak pulse power dissipation with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power supplies.
For engineers reviewing the SMA5J15AHE3/5A datasheet, SMA5J15AHE3/5A pinout, SMA5J15AHE3/5A application, or SMA5J15AHE3/5A equivalent, key selection criteria include clamping performance under 20.5 A surge, unidirectional polarity with cathode band marking, AEC-Q101 qualification status, thermal resistance (RθJA = 80 °C/W), 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 shunt protector, activating when reverse voltage exceeds its 16.7–18.5 V breakdown range to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable leakage (<1.0 µA at 15 V) and fast response time, critical for suppressing ESD and inductive switching spikes.
Rated for -55 °C to +150 °C junction temperature, it supports automotive-grade reliability with AEC-Q101 qualification (indicated by HE3 suffix), RoHS compliance, and MSL Level 1 moisture sensitivity - enabling use in under-hood ECUs and industrial motor drives without derating below 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 15 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working margin for protected line. |
| VBR min/max | 16.7 V / 18.5 V - measured at 1 mA test current; ensures predictable turn-on threshold across production lot. |
| VC @ IPPM | 24.4 V at 20.5 A - clamping voltage during 10/1000 µs surge; determines maximum stress imposed on protected device. |
| PPPM | 500 W - peak pulse power handling capability; enables robust protection against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | <1.0 µA - ultra-low reverse leakage at stand-off voltage; minimizes standby power loss in battery-critical systems. |
| TJ max | +150 °C - maximum junction temperature rating; supports operation in high-ambient environments like engine control units. |
| RθJA | 80 °C/W - thermal resistance junction-to-ambient on standard 5.0 mm × 5.0 mm pad layout; informs heatsinking requirements. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on unidirectional types.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; conducts during forward surge events (e.g., reverse battery connection). |
| Cathode (banded end) | Reverse-biased clamping terminal | Connected to higher-potential side (e.g., VIN rail); initiates avalanche breakdown when transient exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors per stress test requirements. |
| Glass passivated junction | Ensures long-term stability of VBR and leakage under thermal cycling and humidity exposure. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a), improving system immunity. |
| MSL Level 1, 260 °C reflow compatible | Supports lead-free assembly without pre-baking; suitable for high-volume SMT production lines. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in door modules against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS clamping transient overvoltage on VDD rail upstream of LDO regulator. Use Value: Limits rail voltage to ≤24.4 V during 500 W surges, preventing latch-up or permanent damage to 3.3 V/5 V logic. | Use Scenario: Safeguarding analog output lines of pressure sensors in PLC I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Bidirectional-capable clamping element (though SMA5J15AHE3/5A is unidirectional, used on supply side only) placed between sensor VCC and ground. Use Value: Maintains signal integrity by suppressing >1 kV fast transients while adding <1.0 µA leakage at 15 V nominal supply. |
| DC-DC Converter Input Protection | Motor Drive Gate Driver Supply Clamp |
Use Scenario: Front-end surge suppression for 24 V input of isolated flyback converter in factory automation equipment. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main input rail, coordinated with upstream fuse and common-mode choke. Use Value: Absorbs 500 W pulses without degradation, enabling compliance with IEC 61000-4-5 Ed. 3 surge immunity testing. | Use Scenario: Clamping transient spikes induced by high di/dt switching on gate driver VBUS supply in BLDC inverter half-bridges. IC Role / Device Role / Timing Role: Fast-response shunt device placed directly at gate driver IC VDD pin to limit supply rail excursion. Use Value: Responds within picoseconds to clamp spikes to 24.4 V, preventing false triggering or overvoltage shutdown of driver ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J15A-E3/5A | No AEC-Q101 qualification; commercial grade only; identical electrical specs and package. | Suitable for non-automotive industrial or consumer applications where automotive reliability certification is not required. | Select when cost sensitivity outweighs automotive qualification needs and full traceability is not mandated. |
| SMA5J15CAHE3/5A | Bidirectional variant; symmetric clamping in both polarities; same VWM (15 V), VBR (16.7–18.5 V), VC (24.4 V), and PPPM (500 W). | Required for AC-coupled or floating signal lines where polarity reversal or differential surges occur (e.g., RS-485, CAN bus stubs). | Choose only if bidirectional protection is explicitly needed; unidirectional SMA5J15AHE3/5A offers lower leakage and avoids unnecessary complexity in DC rails. |
Compared with SMA5J15A-E3/5A, the HE3 suffix adds AEC-Q101 validation and extended traceability; compared with SMA5J15CAHE3/5A, the unidirectional version provides tighter leakage control and simpler biasing for DC power rail use - making SMA5J15AHE3/5A optimal for automotive 12 V supply protection where polarity is fixed and qualification is mandatory.
Availability
SMA5J15AHE3/5A is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drives, and DC-DC converter designs requiring stable component supply with full AEC-Q101 compliance and RoHS traceability.
Supply support for SMA5J15AHE3/5A 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, MOSFETs, and protection devices with emphasis on high-reliability, high-power-density solutions.
The SMA5J series is engineered for high-energy transient suppression in space-constrained automotive and industrial systems, delivering 500 W surge capability in the compact SMA (DO-214AC) footprint.
FAQ
What is the clamping voltage of the SMA5J15AHE3/5A under maximum rated surge current?
The SMA5J15AHE3/5A has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current (IPPM) of 20.5 A using the standardized 10/1000 µs waveform. This value is measured at TA = 25 °C on minimum recommended PCB pads and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA5J15AHE3/5A maintains this clamping performance consistently due to its glass-passivated junction and low incremental surge resistance.
Is the SMA5J15AHE3/5A suitable for automotive applications?
Yes, the SMA5J15AHE3/5A is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its ordering code, indicating full compliance with the stress test requirements for automotive discrete semiconductors. It is rated for operation from -55 °C to +150 °C and meets MSL Level 1 for lead-free reflow, making it appropriate for under-hood and chassis-mounted ECUs. The SMA5J15AHE3/5A is specifically intended for automotive power rail and sensor protection where certified reliability is mandatory.
How does the SMA5J15AHE3/5A differ from the SMA5J15A-E3/5A?
The SMA5J15AHE3/5A and SMA5J15A-E3/5A share identical electrical characteristics, package (SMA/DO-214AC), and mechanical construction, but differ in qualification level: the HE3 suffix denotes AEC-Q101 qualification and enhanced traceability for automotive use, whereas the E3 suffix indicates commercial-grade RoHS compliance only. Both parts have the same 15 V VWM, 24.4 V VC, and 500 W PPPM. The SMA5J15AHE3/5A is required for automotive production; the E3 version suffices for industrial prototypes or non-automotive systems.
What is the reverse leakage current specification for the SMA5J15AHE3/5A at its stand-off voltage?
The SMA5J15AHE3/5A exhibits a maximum reverse leakage current (ID) of 1.0 µA when biased at its rated stand-off voltage (VWM) of 15 V and measured at TA = 25 °C. This ultra-low leakage ensures minimal power loss in always-on automotive modules and preserves battery life in infotainment or telematics systems. The SMA5J15AHE3/5A achieves this via precise junction control and glass passivation, maintaining stability across temperature and lifetime.
Can the SMA5J15AHE3/5A be used in bidirectional signal line protection?
No, the SMA5J15AHE3/5A is a unidirectional TVS diode, intended for DC power rail or single-polarity signal protection where the cathode is connected to the higher-potential side. For bidirectional protection - such as on AC-coupled data lines or floating sensor outputs - the bidirectional variant SMA5J15CAHE3/5A must be used instead. Using the SMA5J15AHE3/5A on bidirectional lines risks forward conduction during negative transients and inadequate clamping, compromising system robustness.
SMA5J15AHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J15AHE3/5A FAQ
1.How can I place an order for SMA5J15AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J15AHE3/5A 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 SMA5J15AHE3/5A reliable?
The price and inventory of SMA5J15AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J15AHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J15AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J15AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J15AHE3/5A?
SMA5J15AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J15AHE3/5A 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 SMA5J15AHE3/5A?
For technical support, including SMA5J15AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J15AHE3/5A requirements.
6.How does Aetrix verify that SMA5J15AHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J15AHE3/5A 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 SMA5J15AHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J15AHE3/5A?
All SMA5J15AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J15AHE3/5A, 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 SMA5J15AHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J15AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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