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Vishay General Semiconductor - Diodes Division SMA5J7.5A-M3/5A
- Part No.:
- SMA5J7.5A-M3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J7.5A-M3/5A.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,603
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Product details
Overview
SMA5J7.5A-M3/5A 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), 12.9 V clamping voltage (VC) at 100 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMA5J7.5A-M3/5A datasheet, SMA5J7.5A-M3/5A pinout, SMA5J7.5A-M3/5A application, or SMA5J7.5A-M3/5A equivalent, key selection criteria include clamping performance under 100 A surge, thermal resistance (RθJA = 80 °C/W), halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a unidirectional avalanche clamp, triggered when reverse voltage exceeds its VBR range (8.33–9.21 V). Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of ESD, lightning-induced transients, and inductive switching spikes.
Designed for surface-mount use on PCBs with minimum pad layout per Vishay spec, it sustains 40 A non-repetitive forward surge (8.3 ms half-sine) and operates across -55 °C to +150 °C junction temperature. The M3 suffix confirms halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum continuous reverse operating voltage before conduction begins; sets safe DC bias margin for protected circuitry. |
| VBR (min/max) | 8.33 V / 9.21 V at 1.0 mA - guaranteed avalanche initiation window; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 12.9 V at 100 A (10/1000 µs) - clamped voltage seen by downstream components during worst-case surge; defines protection level. |
| PPPM | 500 W - peak pulse power handling capacity; determines survivability against standardized lightning/surge waveforms. |
| IFSM | 40 A - single half-sine surge current rating (8.3 ms); validates robustness against motor or relay coil turn-off events. |
| RθJA | 80 °C/W - junction-to-ambient thermal resistance on standard 5.0 mm × 5.0 mm pads; informs derating above 25 °C ambient. |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with cathode band marking; compatible with JEDEC MS-013 and IPC-7351B. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, polarity indicated by cathode band at one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side reference | Connected to ground or lower-potential rail in unidirectional configuration; enables clamping to GND during overvoltage. |
| Cathode | Reverse voltage sensing / clamping node | Connected to protected line (e.g., 12 V rail or sensor input); conducts avalanche current when VAK > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMA package | Enables high-density PCB layouts and compatibility with automated pick-and-place equipment (0.208" × 0.157" footprint). |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| MSL Level 1 rating | Allows unlimited floor life and reflow up to 260 °C peak without baking - simplifies manufacturing flow. |
| AEC-Q101 qualification option | Available in HM3 variant (SMA5J7.5AHM3_X); validated for automotive powertrain and body electronics applications. |
| Halogen-free (M3) | Meets IEC 61249-2-21 and JEDEC J-STD-020; eliminates brominated flame retardants without compromising flammability rating (UL 94 V-0). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power rail and chassis ground to limit voltage excursions to ≤12.9 V. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers during 100 A, 500 W surge events. |
Use Scenario: Shielding analog inputs of pressure/temperature sensors in PLC modules from ESD and field-wiring surges. IC Role / Device Role / Timing Role: Low-capacitance (typ. <100 pF) TVS connected between signal line and ground to shunt transients before reaching ADC front-end. Use Value: Maintains signal integrity below 12.9 V clamping threshold while supporting fast transient response (<1 ns) for IEC 61000-4-2/4-5 compliance. |
| Consumer Power Adapter Input Stage | Telecom DC Feeder Line Protection |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters powering USB-C PD devices. IC Role / Device Role / Timing Role: Stand-off-rated TVS (7.5 V) placed after rectification to clamp flyback leakage spikes and line transients. Use Value: Enables compliance with UL 62368-1 transient immunity requirements without adding series impedance or affecting regulation. |
Use Scenario: Protecting PoE-powered Ethernet switches from induced surges on 48 V DC feeder lines. IC Role / Device Role / Timing Role: High-power (500 W) unidirectional clamp mounted at DC input connector to divert common-mode surges to chassis ground. Use Value: Survives repeated 10/1000 µs surges up to 100 A while maintaining <1 µA leakage at 7.5 V - preserving standby efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J7.5A-E3/5A | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3); no JESD201 Class 2 whisker rating. | Preferred for commercial-grade, non-automotive designs where halogen content is unrestricted. | Select E3 for cost-sensitive consumer applications where M3's halogen-free requirement is unnecessary. |
| SMA6J7.5A-M3/5A | Higher PPPM (600 W vs. 500 W); same VWM/VBR/VC; larger thermal mass due to SMA6J (DO-214AB) package. | Better suited for higher-energy surge environments (e.g., industrial motor drives) requiring extended surge endurance. | Choose SMA6J7.5A-M3/5A when system-level testing reveals marginal margin with 500 W rating. |
Compared with SMA5J7.5A-E3/5A, the SMA5J7.5A-M3/5A adds halogen-free compliance and whisker resistance for harsher environments, while SMA6J7.5A-M3/5A trades footprint size for higher surge capacity - making SMA5J7.5A-M3/5A optimal for space-constrained, automotive-qualified 500 W protection.
Availability
SMA5J7.5A-M3/5A is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom DC feeder line protection requiring stable component supply, halogen-free compliance, and AEC-Q101-qualified alternatives.
Supply support for SMA5J7.5A-M3/5A 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, power density, and automotive qualification.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained SMT applications, targeting automotive, industrial, and telecom systems where robust 500 W surge handling and MSL Level 1 manufacturability are critical.
FAQ
What is the clamping voltage of the SMA5J7.5A-M3/5A under a 100 A surge?
The SMA5J7.5A-M3/5A has a maximum clamping voltage (VC) of 12.9 V when subjected to a 100 A peak pulse current with a 10/1000 µs waveform. This value is measured at TA = 25 °C on standard 5.0 mm × 5.0 mm copper pads and defines the upper voltage limit imposed on protected circuitry during surge events. The SMA5J7.5A-M3/5A maintains this clamping performance consistently across its qualified operating temperature range.
Is the SMA5J7.5A-M3/5A halogen-free and RoHS-compliant?
Yes, the SMA5J7.5A-M3/5A carries the M3 suffix, indicating it is both halogen-free and RoHS-compliant per EU Directive 2011/65/EU and IEC 61249-2-21. Its molding compound contains no brominated or chlorinated flame retardants, and its matte tin-plated leads meet J-STD-002 and JESD22-B102 solderability standards. The SMA5J7.5A-M3/5A also passes JESD201 Class 2 whisker testing.
Does the SMA5J7.5A-M3/5A have AEC-Q101 qualification?
The base SMA5J7.5A-M3/5A is not AEC-Q101 qualified; however, the automotive-grade variant SMA5J7.5AHM3_X (with revision code such as A or B) is fully AEC-Q101 qualified. That version shares identical electrical characteristics and package dimensions but undergoes additional stress testing for automotive powertrain and body electronics applications. Always verify the full part number suffix when selecting for automotive use.
What is the thermal resistance of the SMA5J7.5A-M3/5A?
The SMA5J7.5A-M3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes standard JEDEC test conditions and is used to calculate allowable power derating above 25 °C ambient. For higher ambient temperatures, the SMA5J7.5A-M3/5A must be operated at reduced peak pulse duty cycles to avoid exceeding TJ(max) = 150 °C.
How does the SMA5J7.5A-M3/5A differ from the SMA5J7.5A-E3/5A?
The SMA5J7.5A-M3/5A and SMA5J7.5A-E3/5A share identical electrical specifications (VWM, VBR, VC, PPPM) and mechanical outline (SMA/DO-214AC), but differ in material composition: M3 denotes halogen-free, RoHS-compliant construction with JESD201 Class 2 whisker resistance, whereas E3 is RoHS-compliant but contains halogenated flame retardants and lacks whisker certification. Both are rated MSL Level 1.
SMA5J7.5A-M3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J7.5A-M3/5A FAQ
1.How can I place an order for SMA5J7.5A-M3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J7.5A-M3/5A 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 SMA5J7.5A-M3/5A reliable?
The price and inventory of SMA5J7.5A-M3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J7.5A-M3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J7.5A-M3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J7.5A-M3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J7.5A-M3/5A?
SMA5J7.5A-M3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J7.5A-M3/5A 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 SMA5J7.5A-M3/5A?
For technical support, including SMA5J7.5A-M3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J7.5A-M3/5A requirements.
6.How does Aetrix verify that SMA5J7.5A-M3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J7.5A-M3/5A 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 SMA5J7.5A-M3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J7.5A-M3/5A?
All SMA5J7.5A-M3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J7.5A-M3/5A, 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 SMA5J7.5A-M3/5A part is unused and in its original packaging.
Return procedure for SMA5J7.5A-M3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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