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Vishay General Semiconductor - Diodes Division SMA5J7.5-E3/61
- Part No.:
- SMA5J7.5-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.5-E3/61.pdf
- Description:
- TVS DIODE 7.5VWM 14.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,459
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Product details
Overview
SMA5J7.5-E3/61 from Vishay General Semiconductor is a unidirectional transient voltage suppressor diode in DO-214AC (SMA) 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), 12.9 V clamping voltage (VC) at 38.8 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs and ICs in automotive body control modules.
For engineers reviewing the SMA5J7.5-E3/61 datasheet, SMA5J7.5-E3/61 pinout, SMA5J7.5-E3/61 application, or SMA5J7.5-E3/61 equivalent, key selection criteria include unidirectional polarity, 150 °C max junction temperature, RoHS-compliant matte tin-plated leads, MSL Level 1 moisture sensitivity, and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance to clamp transient overvoltages before downstream components are damaged. Its unidirectional configuration requires cathode-band orientation during PCB layout, and it conducts only in reverse-bias surge events while blocking forward current up to 40 A IFSM.
The SMA5J7.5-E3/61 is thermally rated for 80 °C/W junction-to-ambient thermal resistance when mounted on 5.0 mm × 5.0 mm copper pads, and its clamping performance is specified under standardized 10/1000 µs surge conditions per ANSI/IEEE C62.35 - making it suitable for inductive load switching transients in 12 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before conduction begins; sets minimum system rail margin for reliable standby blocking. |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA - verified avalanche onset range ensuring consistent turn-on across production lots. |
| VC @ IPPM | 12.9 V at 38.8 A - clamped voltage during full-rated 500 W surge, defining worst-case stress on protected ICs. |
| PPPM | 500 W - peak pulse power handling with 10/1000 µs waveform, enabling robust protection against ISO 7637-2 Pulse 1/2a/5a transients. |
| IFSM | 40 A - non-repetitive forward surge rating (8.3 ms half-sine), supporting temporary inrush or fault-current tolerance in power stages. |
| TJ max | 150 °C - maximum junction temperature, allowing operation in under-hood environments without derating below ambient 125 °C. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-side reference; must be routed with low-inductance trace for effective clamping. |
| Cathode (banded end) | Reverse-biased surge input / protected line connection | Connected to the line being protected (e.g., 12 V battery rail); clamps to anode when VAK exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable VBR and long-term reliability under thermal cycling and humidity exposure. |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, lighting modules, and infotainment power supplies. |
| MSL Level 1 (260 °C peak) | Enables standard reflow assembly without pre-baking; compatible with automated SMT lines. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for 3.3 V/5 V logic interfaces. |
Applications
| Automotive Body Control Module | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver power pins from load-dump and jump-start transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 12 V supply rail and ground, activated within <1 ns to clamp surges above 8.33 V. Use Value: Limits peak voltage to 12.9 V during 38.8 A surge, preventing latch-up or gate oxide damage in protected 12 V-tolerant ICs. | Use Scenario: Shields digital input optocouplers and level-shifters from field-wiring induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Mounted at terminal block entry point to absorb energy from inductive solenoid coil de-energization (IEC 61000-4-4, 4 kV EFT). Use Value: Withstands 500 W pulses without degradation, maintaining signal integrity across 100,000+ surge events per MIL-STD-750 Test Method 2070. |
| Consumer Appliance Motor Drive | Telecom Power Supply Input |
Use Scenario: Safeguards H-bridge gate drivers and bootstrap capacitors from back-EMF spikes generated by brushed DC motors in washing machines. IC Role / Device Role / Timing Role: Connected across motor supply rail and ground, triggered by reverse-voltage transients exceeding 7.5 V stand-off threshold. Use Value: Clamps at 12.9 V to prevent overvoltage stress on 20 V-rated MOSFETs, extending lifetime in high-cycle appliance applications. | Use Scenario: Installed at AC/DC converter primary-side input to suppress lightning-induced surges entering telecom base station power feeds. IC Role / Device Role / Timing Role: First-line defense in multi-stage protection scheme, absorbing bulk energy before MOV and secondary TVS stages. Use Value: Delivers 500 W peak power dissipation with <1 ns response, reducing downstream component stress and enabling smaller secondary-stage designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.5AHE3/61 | AEC-Q101 qualified version with identical electrical specs; differs only in whisker test class (JESD 201 Class 2 vs. Class 1A for E3). | Required for automotive safety-critical subsystems where enhanced whisker resistance is mandated (e.g., ADAS power domains). | Select SMA5J7.5AHE3/61 when AEC-Q101 compliance documentation and Class 2 whisker testing are contractually required. |
| SMCJ7.5A-E3/57T | Same VWM/VC, but in larger DO-214AB (SMC) package offering 1500 W PPPM and lower RθJA (35 °C/W). | Used where higher surge energy (e.g., ISO 16750-2 Load Dump) or improved thermal management is needed. | Choose SMCJ7.5A-E3/57T when system-level surge tests exceed 500 W or board space allows larger footprint for enhanced reliability. |
Compared with SMA5J7.5-E3/61, SMA5J7.5AHE3/61 adds whisker-test assurance without electrical trade-offs, while SMCJ7.5A-E3/57T trades compact size for 3× higher surge capacity and better thermal performance - guiding selection based on automotive qualification depth or system-level surge severity.
Availability
SMA5J7.5-E3/61 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and consumer appliance designs requiring stable component supply, RoHS compliance, and AEC-Q101-qualified surge protection.
Supply support for SMA5J7.5-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, and transient protection devices with emphasis on reliability, precision, and automotive-grade validation.
The SMA5J series is engineered for high-power-density surface-mount surge suppression in space-constrained 12 V and 24 V systems, targeting automotive, industrial, and telecom applications where rapid clamping and long-term stability are critical.
FAQ
What is the polarity configuration of the SMA5J7.5-E3/61?
The SMA5J7.5-E3/61 is a unidirectional transient voltage suppressor diode. Its cathode is marked by a visible band on the DO-214AC (SMA) package body, and it conducts only during reverse-bias overvoltage events. Forward conduction is limited to the 40 A IFSM surge rating and is not intended for continuous operation. This polarity must be observed during PCB layout to ensure correct protection directionality for the SMA5J7.5-E3/61.
Does the SMA5J7.5-E3/61 meet automotive qualification standards?
Yes, the SMA5J7.5-E3/61 is RoHS-compliant and meets JESD 201 Class 1A whisker testing, but it is not AEC-Q101 qualified. For AEC-Q101 compliance, Vishay offers the SMA5J7.5AHE3/61 variant. The SMA5J7.5-E3/61 is rated for 150 °C maximum junction temperature and MSL Level 1, making it suitable for commercial and industrial automotive-adjacent applications where full AEC-Q101 certification is not mandated. Always verify qualification status for the exact SMA5J7.5-E3/61 part number.
What is the clamping voltage of the SMA5J7.5-E3/61 under full-rated surge conditions?
The SMA5J7.5-E3/61 has a maximum clamping voltage (VC) of 12.9 V at its rated peak pulse current (IPPM) of 38.8 A, measured using the standardized 10/1000 µs double-exponential waveform. This value defines the upper voltage limit imposed on protected circuitry during a 500 W transient event and is critical for ensuring compatibility with the absolute maximum ratings of downstream ICs and MOSFETs in the system using the SMA5J7.5-E3/61.
Can the SMA5J7.5-E3/61 be used in bi-directional protection circuits?
No, the SMA5J7.5-E3/61 is strictly unidirectional and lacks symmetrical breakdown characteristics. Bi-directional operation requires the CA-suffixed variant (e.g., SMA5J7.5CA). Using the SMA5J7.5-E3/61 in a bi-directional configuration would result in forward conduction during positive transients, potentially damaging the device or failing to protect the circuit. Always match the suffix - "A" for unidirectional, "CA" for bi-directional - when selecting the correct SMA5J7.5-E3/61 or equivalent.
What is the recommended PCB pad layout for optimal thermal and surge performance of the SMA5J7.5-E3/61?
Vishay specifies that the SMA5J7.5-E3/61 achieves its rated 500 W pulse power and thermal resistance (RθJA = 80 °C/W) when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. Minimum pad dimensions per the DO-214AC outline drawing are 0.074" (1.88 mm) wide with 0.208" (5.28 mm) overall length. Use solid internal ground/power planes and short, wide traces to minimize inductance and maximize heat spreading - essential for repeatable performance of the SMA5J7.5-E3/61 in high-surge environments.
SMA5J7.5-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 14.3V
- Current - Peak Pulse (10/1000µs):
- 35A
- 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)
SMA5J7.5-E3/61 FAQ
1.How can I place an order for SMA5J7.5-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.5-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 SMA5J7.5-E3/61 reliable?
The price and inventory of SMA5J7.5-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 SMA5J7.5-E3/61 is usually 5 days.
3.What payment methods are accepted for SMA5J7.5-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.5-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.5-E3/61?
SMA5J7.5-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.5-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 SMA5J7.5-E3/61?
For technical support, including SMA5J7.5-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.5-E3/61 requirements.
6.How does Aetrix verify that SMA5J7.5-E3/61 is sourced from the original manufacturer or authorized distributors?
All SMA5J7.5-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 SMA5J7.5-E3/61 meets industry standards.
7.What is the process for return or replacement of SMA5J7.5-E3/61?
All SMA5J7.5-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.5-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 SMA5J7.5-E3/61 part is unused and in its original packaging.
Return procedure for SMA5J7.5-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J7.5-E3/61 Tags
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