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Vishay General Semiconductor - Diodes Division 1.5SMC75A-M3/57T
- Part No.:
- 1.5SMC75A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75A-M3/57T.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:8,580
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Product details
Overview
1.5SMC75A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 1500 W peak pulse power (10/1000 μs), 71.3–78.8 V breakdown voltage (VBR), and 104 V clamping voltage (VC) at 14.6 A peak pulse current. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power supplies.
For engineers reviewing the 1.5SMC75A-M3/57T datasheet, 1.5SMC75A-M3/57T pinout, 1.5SMC75A-M3/57T application, or 1.5SMC75A-M3/57T equivalent, key selection criteria include unidirectional polarity, 64.1 V stand-off voltage (VWM), ≤1.0 μA reverse leakage at VWM, MSL Level 1 rating, and halogen-free RoHS compliance per Vishay's M3 suffix.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under transient overvoltage exceeding VWM = 64.1 V, it avalanches rapidly (response time <1 ps) to clamp the line at VC = 104 V, diverting up to 14.6 A (10/1000 μs) away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
The device is rated for continuous power dissipation of 6.5 W on infinite heatsink at 50 °C, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W. Junction temperature range spans –65 °C to +150 °C, and it meets AEC-Q101 qualification when ordered with HE3/HM3 suffixes - though 1.5SMC75A-M3/57T itself is commercial-grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 64.1 V - maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below clamping threshold |
| VBR (Breakdown) | 71.3–78.8 V at 1 mA - guaranteed avalanche onset range; ensures predictable turn-on during transients |
| VC (Clamping) | 104 V at 14.6 A (10/1000 μs) - peak voltage seen by protected circuit during worst-case surge; limits stress on downstream components |
| PPPM | 1500 W - peak pulse power handling capability; enables robust protection against lightning-induced surges and inductive switching spikes |
| IPPM | 14.6 A - maximum non-repetitive surge current supported; determines minimum trace width and PCB copper pad sizing (8.0 mm × 8.0 mm recommended) |
| Leakage (ID) | ≤1.0 μA at VWM - ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance circuits |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive and industrial environments without derating |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band (unidirectional only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point in reverse-biased protection configuration | Connected to protected line (e.g., VIN or signal); conducts surge current to ground when transient exceeds VWM |
| Anode | Reference/ground return path | Connected to system ground or low-impedance return plane; completes clamping path during avalanche event |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables single-device protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12 V/24 V DC rails |
| Glass-passivated chip junction | Ensures long-term stability of VBR and low parameter drift across temperature and lifetime |
| MSL Level 1 (260 °C peak reflow) | Supports standard lead-free SMT assembly without moisture sensitivity concerns or baking requirements |
| Halogen-free & RoHS-compliant (M3 suffix) | Fulfills environmental compliance mandates for automotive and industrial OEMs without compromising electrical performance |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and jump-start transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VBAT and chassis ground, clamping surges within 1 ns. Use Value: Limits voltage to ≤104 V during 35 V/100 ms load dump, preventing damage to LDOs and microcontrollers. |
Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS mounted at connector interface, referenced to signal ground. Use Value: Sub-1 μA leakage avoids loading high-impedance sensor outputs; 104 V clamping prevents op-amp saturation during ±8 kV contact ESD. |
| DC-DC Converter Input Stage | Telecom Equipment Surge Protection |
|
Use Scenario: Safeguarding buck converter inputs against inductive kickback from relay coils and motor drivers. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of input capacitor, sized for 1500 W pulse handling. Use Value: Absorbs 100 mJ pulses without degradation, maintaining converter reliability across 100,000+ switching cycles. |
Use Scenario: Front-end protection for PoE-powered devices exposed to lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Unidirectional TVS on each DC feed line (e.g., PSE output), coordinated with gas discharge tube (GDT) staging. Use Value: Clamps common-mode surges to <110 V while preserving IEEE 802.3af/at signaling integrity via low capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75A (Bourns) | Same VWM (64.1 V), identical SMC package, but lower PPPM = 600 W and higher VC = 121 V at 4.9 A | Not suitable for 1500 W surge events; limited to lower-energy transients like ESD or capacitive coupling | Select only if system-level surge testing confirms ≤600 W requirement and layout allows higher clamping margin |
| 1.5KE75A (Littelfuse) | Through-hole DO-201 package, same VBR/VC specs, but slower thermal response and no MSL Level 1 rating | Requires wave soldering or hand-soldering; incompatible with automated SMT lines and high-density PCBs | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMBJ75A and 1.5KE75A, the 1.5SMC75A-M3/57T delivers 2.5× higher surge power handling in an MSL Level 1–qualified SMT package, enabling compact, automated, and automotive-grade designs without sacrificing clamping performance.
Availability
1.5SMC75A-M3/57T is available at Aetrix Electronics and suitable for automotive power supply protection, industrial sensor interface hardening, and DC-DC converter input stage surge mitigation requiring stable component supply, halogen-free compliance, and SMT manufacturability.
Supply support for 1.5SMC75A-M3/57T 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 protection devices with emphasis on reliability, precision, and application-specific optimization.
The 1.5SMC Series was engineered for high-power, surface-mount transient suppression in space-constrained and thermally demanding environments - targeting automotive, industrial, and telecom systems where robustness and repeatability are critical.
FAQ
What is the clamping voltage of the 1.5SMC75A-M3/57T under a 10/1000 μs surge?
The 1.5SMC75A-M3/57T has a maximum clamping voltage (VC) of 104 V at 14.6 A peak pulse current with a 10/1000 μs waveform. This value is measured per Fig. 1 and Fig. 3 in Vishay document 88303 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The 1.5SMC75A-M3/57T maintains this clamping performance across its full operating temperature range (–65 °C to +150 °C) with minimal derating.
Is the 1.5SMC75A-M3/57T AEC-Q101 qualified?
No, the 1.5SMC75A-M3/57T is not AEC-Q101 qualified. It carries the M3 suffix indicating halogen-free and RoHS-compliant commercial-grade construction. For AEC-Q101 qualification, Vishay specifies part numbers with HM3 or HE3 suffixes (e.g., 1.5SMC75AHM3_A/H). The 1.5SMC75A-M3/57T is rated for automotive-adjacent use but lacks the extended temperature cycling, humidity bias, and failure analysis validation required for formal AEC-Q101 certification.
What does the "/57T" suffix mean in 1.5SMC75A-M3/57T?
The "/57T" suffix in 1.5SMC75A-M3/57T denotes packaging: 7-inch diameter plastic tape-and-reel with 850 units per reel. This format is optimized for high-speed pick-and-place assembly. The "57T" code aligns with Vishay's ordering nomenclature in Document 88303, Table "ORDERING INFORMATION", and is distinct from "/9AT" (13-inch reel, 3500 units). The 1.5SMC75A-M3/57T is supplied in this configuration with full traceability and MSL Level 1 handling compliance.
Can the 1.5SMC75A-M3/57T be used in bidirectional applications?
No, the 1.5SMC75A-M3/57T is strictly unidirectional. Its cathode band marking and electrical specifications (e.g., VBR, VWM) apply only in reverse-bias mode. For bidirectional protection, Vishay offers CA-suffixed variants such as 1.5SMC75CA. Using the 1.5SMC75A-M3/57T in bidirectional configurations risks forward conduction, excessive leakage, or failure to clamp negative transients - the 1.5SMC75A-M3/57T must be oriented with cathode toward the protected line.
What is the thermal resistance of the 1.5SMC75A-M3/57T, and how does it affect PCB layout?
The 1.5SMC75A-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads (RθJL) of 15 °C/W. To achieve rated 6.5 W power dissipation at 50 °C ambient, the PCB must provide adequate copper area: Vishay specifies minimum 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal. Reducing pad size increases RθJA, requiring derating of PPPM and continuous power - the 1.5SMC75A-M3/57T's thermal performance is directly tied to layout adherence.
1.5SMC75A-M3/57T 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):
- 64.1V
- Voltage - Breakdown (Min):
- 71.3V
- Voltage - Clamping (Max) @ Ipp:
- 104V
- Current - Peak Pulse (10/1000µs):
- 14.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC75A-M3/57T FAQ
1.How can I place an order for 1.5SMC75A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75A-M3/57T 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 1.5SMC75A-M3/57T reliable?
The price and inventory of 1.5SMC75A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC75A-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC75A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75A-M3/57T?
1.5SMC75A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75A-M3/57T 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 1.5SMC75A-M3/57T?
For technical support, including 1.5SMC75A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75A-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC75A-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75A-M3/57T 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 1.5SMC75A-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC75A-M3/57T?
All 1.5SMC75A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75A-M3/57T, 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 1.5SMC75A-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC75A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75A-M3/57T Tags
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