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Vishay General Semiconductor - Diodes Division SMP7.5A-M3/84A
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- Part No.:
- SMP7.5A-M3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
SMP7.5A-M3/84A.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,683
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Product details
Overview
SMP7.5A-M3/84A from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in the SMP (DO-220AA) package, rated for 400 W peak pulse power (10/1000 μs), 7.5 V stand-off voltage, and 12.9 V maximum clamping voltage at 31.0 A peak pulse current. It provides low-profile (1.0 mm typical height), fast-response overvoltage protection for sensitive signal lines in industrial sensor interfaces.
For engineers reviewing the SMP7.5A-M3/84A datasheet, SMP7.5A-M3/84A pinout, SMP7.5A-M3/84A application, or SMP7.5A-M3/84A equivalent, key selection criteria include unidirectional polarity, 7.5 V VWM, 12.9 V VC at IPPM, MSL Level 1 rating, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
The SMP7.5A-M3/84A operates as a silicon avalanche diode designed to clamp transient overvoltages before they damage downstream ICs or MOSFETs. Its breakdown voltage range is 8.33–9.21 V at 1.0 mA test current, with 2.5 V maximum forward voltage at 25 A.
Thermal performance is defined by 50 °C/W junction-to-lead and 250 °C/W junction-to-ambient thermal resistance. It meets JEDEC J-STD-020 MSL Level 1 and withstands 260 °C lead-free reflow peak temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - reverse stand-off voltage; defines maximum continuous operating voltage before conduction begins |
| VBR min/max | 8.33 V / 9.21 V - breakdown voltage range at 1.0 mA; ensures predictable turn-on threshold under surge conditions |
| VC @ IPPM | 12.9 V - clamping voltage at 31.0 A peak pulse current; limits voltage seen by protected circuit during transients |
| PPPM | 400 W - peak pulse power handling (10/1000 μs waveform); determines survivability against common lightning/inductive surges |
| IFSM | 40 A - non-repetitive forward surge current (10 ms half-sine); supports robustness during power-up or fault events |
| TJ max | +150 °C - maximum junction temperature; enables reliable operation in high-ambient industrial environments |
Pinout & Package
Package: SMP (DO-220AA), surface-mount, single-ended two-terminal device with cathode band marking. Dimensions: 3.61 mm × 2.18 mm × 1.0 mm (L × W × H), 5.0 mm × 5.0 mm copper pad requirement per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side of protected line; enables clamping when cathode exceeds anode by ≥VBR |
| Cathode | Current exit point during reverse-biased clamping | Marked with color band; connected to higher-potential rail (e.g., VCC or signal line) to shunt transients to ground |
Key Features
| Feature | Design Value |
|---|---|
| Low profile height | 1.0 mm typical - enables use in space-constrained PCB layouts and thin consumer/industrial enclosures |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60 % RH - eliminates bake requirements prior to assembly |
| Halogen-free & RoHS | M3 suffix - meets industrial-grade environmental compliance without compromising surge robustness |
| Fast response time | <1.0 ps - clamps transients before propagation into sensitive analog or digital circuitry |
Applications
| Industrial Sensor Interface Protection | Automotive Body Control Module (BCM) Signal Lines |
|---|---|
Use Scenario: Protecting 5 V analog output lines from ESD and load-dump transients in factory-floor pressure/temperature sensors. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between sensor output and microcontroller ADC input. Use Value: Limits voltage to ≤12.9 V during 31 A surge, preventing ADC saturation and latch-up while maintaining signal integrity below 7.5 V normal operation. |
Use Scenario: Safeguarding LIN bus communication lines in BCMs exposed to battery disconnect transients and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Standoff-clamp TVS on LIN data line referenced to chassis ground. Use Value: Clamps 400 W transients within 1.0 ps, preserving signal timing margins and meeting automotive EMC immunity requirements without adding series impedance. |
| USB 2.0 Data Line ESD Protection | Power Supply Input Rail Clamp |
Use Scenario: Secondary ESD protection on D+ and D− lines after primary polymer-based TVS in portable medical USB peripherals. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) unidirectional clamp referenced to 3.3 V supply. Use Value: Adds <13 V clamping headroom above 7.5 V VWM, enabling safe handling of ±15 kV contact discharge per IEC 61000-4-2 without signal distortion. |
Use Scenario: Overvoltage clamp on 12 V DC input rail of industrial IoT gateway powering multiple subsystems. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of DC-DC converters and LDOs. Use Value: Absorbs 400 W surges with 50 °C/W thermal resistance, limiting temperature rise to <150 °C even under repeated 300 μs pulses at 1 % duty cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMP7.5A-M3/85A | Same electrical specs; differs only in packaging - 10,000-piece 13" tape-and-reel vs. 3,000-piece 7" reel | Identical circuit-level performance; selected for high-volume automated assembly requiring larger reels | Choose SMP7.5A-M3/85A when optimizing for SMT line uptime and reduced reel change frequency |
| SMAJ7.5A | Higher RθJA (350 °C/W vs. 250 °C/W); same VWM/VC but lower IPPM (28.6 A vs. 31.0 A) and larger SMA package (4.5 mm × 2.7 mm) | Less effective thermal dissipation in dense layouts; requires larger PCB area and may derate faster at elevated ambient | Prefer SMP7.5A-M3/84A where board space, thermal margin, or MSL Level 1 compliance are critical |
Compared with SMP7.5A-M3/85A and SMAJ7.5A, the SMP7.5A-M3/84A delivers identical clamping performance in a smaller footprint, superior thermal resistance, and guaranteed MSL Level 1 handling-making it optimal for compact, high-reliability industrial and automotive signal-line protection.
Availability
SMP7.5A-M3/84A is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, and USB 2.0 data line protection requiring stable component supply, consistent MSL Level 1 handling, and verified halogen-free compliance.
Supply support for SMP7.5A-M3/84A 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 application-specific optimization.
The SMP series was developed to deliver high-power transient suppression in ultra-low-profile surface-mount packages for next-generation compact electronics, particularly where automated placement and thermal efficiency are critical.
FAQ
What is the maximum clamping voltage of the SMP7.5A-M3/84A under standard test conditions?
The SMP7.5A-M3/84A has a maximum clamping voltage (VC) of 12.9 V when subjected to its rated peak pulse current of 31.0 A using a 10/1000 μs waveform. This value is measured at the device terminals under standardized test conditions per ANSI/IEEE C62.35 and is guaranteed across the full operating temperature range.
Is the SMP7.5A-M3/84A suitable for lead-free reflow soldering processes?
Yes, the SMP7.5A-M3/84A is qualified for lead-free reflow with a maximum peak temperature of 260 °C, meeting J-STD-020 MSL Level 1 requirements. Its matte tin-plated leads are solderable per J-STD-002 and JESD22-B102, and the M3 suffix confirms compliance with JESD201 Class 2 whisker resistance.
How does the SMP7.5A-M3/84A differ from the SMP7.5A-M3/85A?
The SMP7.5A-M3/84A and SMP7.5A-M3/85A share identical electrical and thermal specifications. The sole difference is packaging: SMP7.5A-M3/84A ships in 3,000-piece 7" diameter tape-and-reel, while SMP7.5A-M3/85A uses 10,000-piece 13" reels. Both are functionally interchangeable in circuit design.
What is the reverse leakage current of the SMP7.5A-M3/84A at its stand-off voltage?
At the 7.5 V stand-off voltage (VWM) and 25 °C ambient temperature, the SMP7.5A-M3/84A exhibits a maximum reverse leakage current (ID) of 50 μA. This low leakage ensures minimal power loss and signal interference in always-on sensor or communication circuits.
Can the SMP7.5A-M3/84A be used in bidirectional configurations?
No, the SMP7.5A-M3/84A is a unidirectional device, as confirmed by its polarity marking (cathode band) and electrical characterization. For bidirectional transient suppression, Vishay offers separate part numbers such as SMP7.5CA; the SMP7.5A-M3/84A must be oriented correctly in-circuit with cathode toward the protected line's higher potential.
SMP7.5A-M3/84A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- 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):
- 31A
- Power - Peak Pulse:
- 400W
- 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-220AA (SMP)
SMP7.5A-M3/84A FAQ
1.How can I place an order for SMP7.5A-M3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMP7.5A-M3/84A 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 SMP7.5A-M3/84A reliable?
The price and inventory of SMP7.5A-M3/84A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMP7.5A-M3/84A is usually 5 days.
3.What payment methods are accepted for SMP7.5A-M3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMP7.5A-M3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMP7.5A-M3/84A?
SMP7.5A-M3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMP7.5A-M3/84A 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 SMP7.5A-M3/84A?
For technical support, including SMP7.5A-M3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMP7.5A-M3/84A requirements.
6.How does Aetrix verify that SMP7.5A-M3/84A is sourced from the original manufacturer or authorized distributors?
All SMP7.5A-M3/84A 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 SMP7.5A-M3/84A meets industry standards.
7.What is the process for return or replacement of SMP7.5A-M3/84A?
All SMP7.5A-M3/84A units undergo pre-shipment inspection (PSI). If there is an issue with SMP7.5A-M3/84A, 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 SMP7.5A-M3/84A part is unused and in its original packaging.
Return procedure for SMP7.5A-M3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMP7.5A-M3/84A Tags
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