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Vishay General Semiconductor - Diodes Division SMA5J7.5AHE3/5A
- Part No.:
- SMA5J7.5AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.5AHE3/5A.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,299
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Product details
Overview
SMA5J7.5AHE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA test current, 12.9 V clamping voltage (VC) at 38.8 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMA5J7.5AHE3/5A datasheet, SMA5J7.5AHE3/5A pinout, SMA5J7.5AHE3/5A application, or SMA5J7.5AHE3/5A equivalent, key selection criteria include verified clamping performance under 38.8 A surge, AEC-Q101 qualification status, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below 7.5 V (VWM), breaks down within 8.33–9.21 V (VBR), and limits transients to ≤12.9 V (VC) during 38.8 A surges. Its glass-passivated junction ensures stable leakage (<100 µA at VWM) and fast response time (<1.0 ns).
Thermally rated for TJ = -55 °C to +150 °C, it delivers 500 W peak pulse power when mounted per recommended pad layout, with RθJA = 80 °C/W and RθJL = 25 °C/W. The HE3 suffix confirms AEC-Q101 qualification and RoHS compliance; /5A denotes 13" tape-and-reel packaging (7500 pcs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before conduction begins |
| VBR min/max | 8.33 V / 9.21 V at IT = 1.0 mA - guaranteed breakdown window defining turn-on threshold |
| VC @ IPPM | 12.9 V at 38.8 A - clamped voltage during full-rated 10/1000 μs surge, limiting downstream stress |
| PPPM | 500 W - peak transient energy absorption capability with standard waveform |
| ID @ VWM | <100 µA - low leakage preserves signal integrity and minimizes standby power loss |
| TJ max | +150 °C - enables operation in under-hood automotive and high-temperature industrial environments |
| Package | SMA (DO-214AC) - surface-mount outline with cathode band marking, MSL Level 1, 260 °C reflow compatible |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; polarity indicated by cathode band on one end; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to protected line's lower-potential side (e.g., GND or return path) |
| Cathode | Reverse-biased terminal (marked with band) | Connected to protected line's higher-potential side (e.g., VCC or signal rail); conducts during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22-A114 |
| Glass passivated junction | Ensures stable VBR tolerance and long-term leakage stability across thermal and humidity stress |
| Low incremental surge resistance | Minimizes VC rise under high di/dt, improving clamping precision during fast transients |
| MSL Level 1 (260 °C) | Enables single-pass lead-free reflow without moisture-induced damage or popcorn effect |
| Automated placement optimized | Standardized DO-214AC footprint and lead coplanarity support high-yield SMT assembly |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between signal line and ground, clamping transients before they reach sensitive input stages. Use Value: Limits induced surges to ≤12.9 V, preserving signal integrity and preventing latch-up in 3.3 V/5 V interface ICs per AEC-Q100 stress requirements. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V DC input channels, absorbing repetitive 500 W transients without degradation. Use Value: Maintains <100 µA leakage at 7.5 V, ensuring clean logic thresholds while surviving >1000 surges per IEC 61000-4-5 Level 4 testing. |
| Consumer Power Adapter Output | Telecom Line Card Surge Suppression |
Use Scenario: Secondary-side overvoltage protection on 5 V/9 V USB-C PD adapter outputs exposed to accidental short-circuit recovery spikes. IC Role / Device Role / Timing Role: Fast-response clamp parallel to output capacitor, diverting surge energy away from downstream regulators and connectors. Use Value: Clamps 38.8 A transients to 12.9 V within <1 ns, preventing overshoot beyond 15 V absolute maximum ratings of connected devices. |
Use Scenario: Primary protection on Ethernet PHY power rails (e.g., 3.3 V bias supply) in network switches subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Unidirectional TVS referenced to local ground, suppressing differential-mode transients coupled onto DC bias lines. Use Value: With 80 °C/W RθJA, sustains repeated 500 W pulses without thermal runaway when mounted on 5 mm × 5 mm copper pads per datasheet layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.5A-E3/5A | No AEC-Q101 qualification; same electrical specs and package; commercial-grade only | Not suitable for automotive production; acceptable for industrial/commercial prototypes | Select when AEC-Q101 is not required and cost sensitivity outweighs qualification needs |
| SMA6J7.5AHE3/5A | 600 W PPPM rating; higher IPPM (43.5 A); identical VWM/VBR/VC and AEC-Q101 qualification | Better margin for systems expecting >500 W surges; larger thermal mass but same footprint | Choose when design requires headroom above 500 W or higher surge repetition rates |
Compared with SMA5J7.5AHE3/5A, the SMA5J7.5A-E3/5A omits automotive qualification but matches all electrical parameters, while the SMA6J7.5AHE3/5A increases surge capacity to 600 W without changing layout - enabling direct upgrade paths in validated designs.
Availability
SMA5J7.5AHE3/5A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and consumer power adapter outputs requiring stable component supply with AEC-Q101 assurance and full traceability.
Supply support for SMA5J7.5AHE3/5A 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 reliability and application-specific performance.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained automotive and industrial systems, delivering robust 500 W surge handling in the compact SMA package.
FAQ
What is the clamping voltage of SMA5J7.5AHE3/5A at its rated peak pulse current?
The SMA5J7.5AHE3/5A clamps to a maximum of 12.9 V when subjected to its rated peak pulse current of 38.8 A using the standardized 10/1000 μs waveform. This value is measured under specified test conditions (TA = 25 °C, mounted on 0.2" × 0.2" copper pads) and ensures downstream circuitry remains within safe operating limits during surge events. The SMA5J7.5AHE3/5A achieves this clamping performance while maintaining low incremental surge resistance.
Is SMA5J7.5AHE3/5A qualified for automotive applications?
Yes, SMA5J7.5AHE3/5A is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number and documented in Vishay's official datasheet revision 09-Jan-2024. This qualification covers stress tests including temperature cycling, high-temperature reverse bias, and electrostatic discharge, making SMA5J7.5AHE3/5A suitable for under-hood and body-control module applications where reliability is critical.
What does the "/5A" suffix indicate in SMA5J7.5AHE3/5A?
The "/5A" suffix in SMA5J7.5AHE3/5A specifies the packaging configuration: 13-inch diameter plastic tape-and-reel format containing 7500 units. This differs from "/61", which denotes 7-inch reels with 1800 units. Both formats use the same device die and qualification; the "/5A" option supports high-volume SMT production lines requiring extended reel life and reduced changeover frequency for SMA5J7.5AHE3/5A.
How does SMA5J7.5AHE3/5A differ from bidirectional variants like SMA5J7.5CA?
SMA5J7.5AHE3/5A is unidirectional, with polarity marked by a cathode band and intended for DC rail protection where current flows in one direction. In contrast, SMA5J7.5CA is bidirectional, has no polarity marking, and protects AC or dual-polarity signals. Their VWM and VBR values differ: SMA5J7.5AHE3/5A has VWM = 7.5 V and VBR = 8.33–9.21 V, while SMA5J7.5CA has symmetric breakdown in both directions and different parameter ranges. SMA5J7.5AHE3/5A cannot substitute for SMA5J7.5CA without circuit redesign.
What is the maximum junction temperature rating for SMA5J7.5AHE3/5A?
The SMA5J7.5AHE3/5A has a maximum junction temperature (TJ max) rating of +150 °C, as specified in the Vishay datasheet. This allows reliable operation in high-ambient environments such as engine compartments or enclosed industrial enclosures. Derating curves in Figure 2 show that pulse power must be reduced linearly above TA = 25 °C, and the device remains functional up to its full TJ limit when thermally managed per recommended pad layout. SMA5J7.5AHE3/5A maintains specification compliance across this full range.
SMA5J7.5AHE3/5A 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):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 38.8A
- 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)
SMA5J7.5AHE3/5A FAQ
1.How can I place an order for SMA5J7.5AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.5AHE3/5A 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 SMA5J7.5AHE3/5A reliable?
The price and inventory of SMA5J7.5AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J7.5AHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J7.5AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.5AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.5AHE3/5A?
SMA5J7.5AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.5AHE3/5A 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 SMA5J7.5AHE3/5A?
For technical support, including SMA5J7.5AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.5AHE3/5A requirements.
6.How does Aetrix verify that SMA5J7.5AHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J7.5AHE3/5A 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 SMA5J7.5AHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J7.5AHE3/5A?
All SMA5J7.5AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.5AHE3/5A, 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 SMA5J7.5AHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J7.5AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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