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Vishay General Semiconductor - Diodes Division 1.5SMC7.5AHM3_A/I
- Part No.:
- 1.5SMC7.5AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC7.5AHM3_A/I.pdf
- Description:
- TVS DIODE 6.4VWM 11.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,004
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Product details
Overview
1.5SMC7.5AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features 7.13 V minimum breakdown voltage (VBR), 6.40 V standoff voltage (VWM), 11.3 V maximum clamping voltage (VC) at 133 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive and industrial power rails.
For engineers reviewing the 1.5SMC7.5AHM3_A/I datasheet, 1.5SMC7.5AHM3_A/I pinout, 1.5SMC7.5AHM3_A/I application, or 1.5SMC7.5AHM3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, 150 °C max junction temperature, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This device operates as a silicon avalanche diode optimized for fast transient suppression: it responds in <1 ps to overvoltage events and clamps within nanoseconds using low incremental surge resistance. Its glass-passivated junction ensures stable VBR tolerance (±5%) and long-term reliability under repetitive surges up to 0.01% duty cycle.
The 1.5SMC7.5AHM3_A/I is rated for 200 A non-repetitive forward surge current (8.3 ms half-sine), supports operation from –65 °C to +150 °C, and meets J-STD-020 MSL Level 1 (260 °C peak reflow), making it suitable for high-reliability automotive ECUs and industrial motor drives where thermal derating and solderability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 6.40 V - Maximum continuous reverse operating voltage before leakage exceeds 500 μA; defines safe DC bias margin for 5 V rail protection. |
| VBR (min/max) | 7.13 V / 7.88 V at 10 mA - Ensures predictable avalanche onset across manufacturing lot; ±5% tolerance enables precise system-level overvoltage threshold setting. |
| VC @ IPPM | 11.3 V at 133 A - Clamping voltage during 10/1000 μs surge; limits downstream component stress below 12 V absolute maximum ratings. |
| PPPM | 1500 W - Peak pulse power handling per single transient; validated on 8.0 mm × 8.0 mm copper pads per terminal. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in under-hood automotive environments without thermal shutdown. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 0.320" body length; compatible with IPC-7351B footprint and pick-and-place tooling. |
Pinout & Package
SMC (DO-214AB) package: molded epoxy case with matte tin-plated leads, cathode band marking on unidirectional devices. Dimensions: 7.11 mm × 6.22 mm × 2.62 mm (L × W × H); terminals meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / transient return path | Connected to protected line ground or low-side reference; must be routed with low-inductance trace to minimize clamping overshoot. |
| Cathode | Avalanche conduction node / clamping output | Connected to power rail or signal line being protected; marked by visible band; carries full surge current during clamp event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HM3) | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock - required for engine control, ADAS, and body electronics. |
| 1500 W peak pulse power | Handles ISO 7637-2 Pulse 1/2a/5a transients and IEC 61000-4-5 Level 4 surges without degradation when mounted per recommended pad layout. |
| Low clamping ratio (VC/VBR ≈ 1.59) | Minimizes overvoltage stress on downstream components - critical for protecting 6 V-rated logic inputs or gate drivers. |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and JEDEC JS709C; eliminates brominated flame retardants for safer end-of-life processing. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (up to 35 V, 100 ms) and alternator ripple spikes on 12 V battery-fed ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and LDO regulator input to clamp overvoltage before it reaches sensitive analog front-ends. Use Value: Limits voltage to ≤11.3 V during 133 A surge, preventing regulator latch-up and preserving CAN/LIN communication integrity. | Use Scenario: Protecting 4–20 mA current-loop transmitters and RS-485 nodes from ESD and inductive switching noise in factory automation systems. IC Role / Device Role / Timing Role: Mounted across signal pair (e.g., A/B lines) or from signal to ground to shunt fast transients (<1 ns rise time) before they couple into receiver inputs. Use Value: Sub-12 V clamping ensures receiver ICs (e.g., MAX1487) remain within absolute maximum ratings during 8 kV contact ESD events. |
| Consumer Power Adapter Input Stage | Telecom DC Power Feeding Protection |
Use Scenario: Safeguarding AC/DC adapter primary-side controllers and secondary-side synchronous rectifiers against lightning-induced surges on mains-connected outputs. IC Role / Device Role / Timing Role: Placed at DC output connector to absorb differential-mode surges before reaching USB-PD or QC controller ICs. Use Value: 1500 W rating handles 1.2/50 μs combination wave surges per IEC 61000-4-5, enabling UL/EN 62368-1 compliance without additional MOV stages. | Use Scenario: Protecting PoE-powered devices (e.g., IP cameras, wireless APs) from voltage reversals and cable discharge events on 48 V DC feeding lines. IC Role / Device Role / Timing Role: Connected anode-to-ground, cathode-to-PoE line to clamp negative-going transients and positive surges simultaneously via unidirectional action. Use Value: 6.4 V VWM provides 1.6 V margin above 4.8 V logic thresholds while maintaining low leakage (<500 μA) at nominal 48 V bias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A | Same VWM (6.4 V) and VC (11.3 V), but lower PPPM (400 W) and SMA package (smaller thermal mass). | Limited to lower-energy transients (e.g., ESD-only); unsuitable for ISO 7637-2 Pulse 5a or lightning surges. | Select SMAJ7.5A only for space-constrained consumer PCBs where surge energy is strictly limited to IEC 61000-4-2 Level 4. |
| 1.5KE7.5A | Through-hole DO-201 package; identical electrical specs but higher RθJA (100 °C/W vs. 75 °C/W) and no AEC-Q101 qualification. | Not suitable for automated SMT production or automotive under-hood use; requires manual assembly and lacks automotive reliability validation. | Choose 1.5KE7.5A only for prototyping or legacy through-hole designs where reflow compatibility and automotive qualification are not required. |
Compared with SMAJ7.5A and 1.5KE7.5A, the 1.5SMC7.5AHM3_A/I delivers 3.75× higher surge power handling than SMAJ7.5A and enables automated SMT assembly with AEC-Q101 assurance - essential for volume automotive production where thermal robustness and process consistency are non-negotiable.
Availability
1.5SMC7.5AHM3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power feeding circuits requiring stable component supply, halogen-free compliance, and AEC-Q101 reliability validation.
Supply support for 1.5SMC7.5AHM3_A/I 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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability, high-efficiency solutions.
The 1.5SMC Series was developed specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure due to voltage surges must be eliminated through proven avalanche performance and AEC-Q101 validation.
FAQ
What is the meaning of the "HM3" suffix in 1.5SMC7.5AHM3_A/I?
The "HM3" suffix in 1.5SMC7.5AHM3_A/I indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It confirms the device meets automotive-grade reliability standards including temperature cycling, mechanical shock, and humidity testing - critical for deployment in engine control modules and ADAS systems where long-term field stability is mandatory. The "I" denotes 13-inch tape-and-reel packaging (3500 units per reel).
Does 1.5SMC7.5AHM3_A/I support bidirectional transient suppression?
No, 1.5SMC7.5AHM3_A/I is a unidirectional TVS diode, as indicated by the "A" (not "CA") suffix and presence of cathode band marking. It conducts only during reverse-biased overvoltage events. For bidirectional protection (e.g., data lines), a part like 1.5SMC7.5CAHM3_A/I would be required - which has symmetric clamping in both polarities and no polarity marking.
What is the maximum allowable PCB pad size for optimal thermal performance of 1.5SMC7.5AHM3_A/I?
For rated 1500 W peak pulse power, 1.5SMC7.5AHM3_A/I must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in Figure 2 of the Vishay datasheet. Smaller pads reduce heat dissipation and cause premature thermal runaway during repetitive surges; larger pads improve derating margin but require adherence to IPC-7351B SMC land pattern geometry to avoid solder bridging.
How does the 11.3 V clamping voltage of 1.5SMC7.5AHM3_A/I impact system-level design?
The 11.3 V clamping voltage (VC) of 1.5SMC7.5AHM3_A/I directly defines the maximum voltage seen by downstream components during a 133 A transient. Designers must ensure all connected ICs - such as microcontrollers, gate drivers, or voltage regulators - have absolute maximum ratings exceeding 11.3 V, with ≥1.5 V margin recommended. This value also determines required input capacitor sizing to limit dV/dt-induced current overshoot during clamping.
Is 1.5SMC7.5AHM3_A/I compatible with lead-free reflow profiles?
Yes, 1.5SMC7.5AHM3_A/I is qualified for lead-free reflow per J-STD-020 MSL Level 1, with maximum peak temperature of 260 °C. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the package withstands standard SAC305 thermal profiles (peak 245–260 °C, 60–90 s above 220 °C) without delamination or parameter shift - confirmed in Vishay's qualification report for HM3 suffix parts.
1.5SMC7.5AHM3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.4V
- Voltage - Breakdown (Min):
- 7.13V
- Voltage - Clamping (Max) @ Ipp:
- 11.3V
- Current - Peak Pulse (10/1000µs):
- 133A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC7.5AHM3_A/I FAQ
1.How can I place an order for 1.5SMC7.5AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC7.5AHM3_A/I 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 1.5SMC7.5AHM3_A/I reliable?
The price and inventory of 1.5SMC7.5AHM3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC7.5AHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC7.5AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC7.5AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC7.5AHM3_A/I?
1.5SMC7.5AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC7.5AHM3_A/I 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 1.5SMC7.5AHM3_A/I?
For technical support, including 1.5SMC7.5AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC7.5AHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC7.5AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC7.5AHM3_A/I 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 1.5SMC7.5AHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC7.5AHM3_A/I?
All 1.5SMC7.5AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC7.5AHM3_A/I, 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 1.5SMC7.5AHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC7.5AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC7.5AHM3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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