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Vishay General Semiconductor - Diodes Division 1.5SMC75CA-M3/57T
- Part No.:
- 1.5SMC75CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC75CA-M3/57T.pdf
- Description:
- TVS DIODE 64.1VWM 104VC SMC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
1.5SMC75CA-M3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 75 V standoff voltage (VWM), 104 V maximum clamping voltage (VC) at 14.6 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 μs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC75CA-M3/57T datasheet, 1.5SMC75CA-M3/57T pinout, 1.5SMC75CA-M3/57T application, or 1.5SMC75CA-M3/57T equivalent, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance (enabling precise transient suppression), MSL Level 1 reflow compatibility, halogen-free RoHS compliance (M3 suffix), and AEC-Q101 qualification readiness via HM3 variants.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 75 V), but triggers into low-impedance conduction when transients exceed its breakdown threshold (71.3–78.8 V at 1 mA). Its glass-passivated junction ensures stable avalanche characteristics and fast response (<1 ns).
The 1.5SMC75CA-M3/57T uses a symmetric bidirectional structure - no polarity marking - enabling identical clamping behavior in both directions. Thermal performance is defined by RθJA = 75 °C/W (on recommended 8.0 mm × 8.0 mm copper pads) and a 150 °C maximum junction temperature, supporting sustained operation in thermally constrained SMT layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 75 V - Maximum continuous reverse working voltage before leakage exceeds 1 μA; defines safe operating margin below clamping onset. |
| VBR (Breakdown) | 71.3–78.8 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on across production lot and temperature. |
| VC (Clamping) | 104 V at 14.6 A (10/1000 μs) - Peak voltage seen by protected circuit during worst-case surge; determines downstream IC survivability. |
| PPPM | 1500 W - Peak pulse power handling capacity; enables protection against lightning-induced surges (IEC 61000-4-5 Level 4) and inductive switch-offs. |
| IPPM | 14.6 A - Peak pulse current supported at rated clamping voltage; directly correlates to energy absorption (≈15 J per pulse). |
| TJmax | 150 °C - Maximum junction temperature; sets thermal derating envelope for repetitive surge events and ambient design limits. |
| Package | SMC (DO-214AB) - Standardized 2-pin surface-mount outline (7.75 × 6.22 × 2.62 mm); compatible with automated pick-and-place and reflow (MSL Level 1, 260 °C peak). |
Pinout & Package
Package: SMC (DO-214AB), bidirectional configuration - no cathode/anode marking; symmetrical terminal geometry supports mounting in either orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode / Cathode (bidirectional) | Either terminal serves as current entry point during positive or negative transients; no polarity dependency in layout. |
| Terminal 2 | Anode / Cathode (bidirectional) | Complementary terminal completing the symmetrical clamping path; enables single-device protection of AC or differential lines. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC in both polarities - eliminates need for dual unidirectional devices on AC-coupled or floating signal paths. |
| 1500 W peak pulse rating | Supports IEC 61000-4-5 4th-level surge immunity (4 kV line-to-ground, 2 kV line-to-line) without external series impedance. |
| Glass-passivated junction | Ensures stable breakdown voltage drift <±5 % over 1000 hrs life test and immunity to humidity-induced parameter shift. |
| Halogen-free & RoHS-compliant (M3) | Meets IPC-1752A material declaration requirements and JEDEC J-STD-020 MSL Level 1 reflow profile (260 °C peak). |
| AEC-Q101 qualification path | HM3 variant available - qualified for automotive powertrain and body electronics per stress test requirements (HTOL, TCT, ESD). |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and Hall-effect sensor outputs from load-dump and jump-start transients in 12 V vehicle systems. IC Role / Device Role: Bidirectional shunt clamp placed between signal line and ground, absorbing >95 % of surge energy before reaching sensitive analog front-end. Use Value: Maintains signal integrity under ISO 7637-2 Pulse 5a (75 V/350 ms) while enabling compact placement adjacent to connector entry points. |
Use Scenario: Safeguarding 4–20 mA current-loop inputs in programmable logic controllers exposed to field wiring faults and electrostatic discharge. IC Role / Device Role: High-energy TVS connected across input terminals to limit common-mode voltage excursions during cable coupling events. Use Value: Clamps to ≤104 V within nanoseconds, preventing op-amp saturation and ADC latch-up without affecting loop accuracy (leakage <1 μA at 75 V). |
| Telecom Line Card Protection | Consumer Power Adapter EMI Filter |
|
Use Scenario: Secondary-side surge suppression on Ethernet PHY power rails (3.3 V/5 V) in PoE-powered switches and media converters. IC Role / Device Role: Bidirectional clamp bridging VDD–GND to suppress fast-rising ESD (IEC 61000-4-2 ±8 kV contact) and ring-wave surges. Use Value: Low capacitance (<100 pF at 0 V) avoids signal integrity degradation on 100BASE-TX lines while delivering full 1500 W pulse handling. |
Use Scenario: Input-stage transient suppression on secondary-side DC outputs of wall adapters used in smart home hubs and IoT gateways. IC Role / Device Role: Final-stage shunt protector after bulk filtering, guarding against capacitor discharge events and user-insertion spikes. Use Value: Halogen-free M3 construction meets UL 62368-1 flammability (UL 94 V-0) and environmental compliance for consumer end-product certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ75CA | Same VWM/VC, but lower PPPM = 600 W; SMB package (smaller footprint, higher RθJA = 110 °C/W). | Limited to lower-energy threats (IEC 61000-4-5 Level 2); unsuitable for automotive load-dump or industrial motor drive coupling. | Select when board space is critical and surge threat level is defined ≤600 W (e.g., USB port protection). |
| 1.5KE75CA | Same electrical specs, but through-hole DO-201AE package; higher mechanical robustness but incompatible with SMT assembly. | Used where manual repairability or high-vibration environments demand leaded mounting; not viable for automated production. | Choose only for legacy designs requiring through-hole replacement or prototyping with breadboard compatibility. |
Compared with SMBJ75CA and 1.5KE75CA, the 1.5SMC75CA-M3/57T delivers optimal balance of high-energy handling (1500 W), SMT manufacturability, and halogen-free compliance - making it the preferred choice for volume automotive and industrial designs requiring AEC-Q101 scalability and reflow-ready packaging.
Availability
1.5SMC75CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, telecom line card surge suppression, and consumer power adapter safety compliance requiring stable component supply and full traceability.
Supply support for 1.5SMC75CA-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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for demanding industrial and automotive applications.
The 1.5SMC Series was engineered specifically for surface-mount transient suppression in space-constrained, high-surge environments - emphasizing repeatable clamping, low leakage, and process-compatible packaging for Tier 1 automotive and industrial control systems.
FAQ
What is the maximum clamping voltage of the 1.5SMC75CA-M3/57T under a 10/1000 μs surge?
The 1.5SMC75CA-M3/57T has a maximum clamping voltage (VC) of 104 V when subjected to its rated peak pulse current of 14.6 A with a 10/1000 μs waveform. This value is guaranteed across the full operating temperature range (−65 °C to +150 °C) and represents the highest voltage the protected circuit will experience during such a transient event. The 1.5SMC75CA-M3/57T achieves this performance using a glass-passivated silicon junction optimized for consistent avalanche behavior.
Is the 1.5SMC75CA-M3/57T suitable for automotive applications?
Yes - the 1.5SMC75CA-M3/57T is halogen-free and RoHS-compliant (M3 suffix), and its base family is AEC-Q101 qualified in HM3 variants. While the M3 version itself is commercial-grade, it shares identical electrical and thermal specifications with the HM3 automotive variant, enabling seamless qualification migration. The 1.5SMC75CA-M3/57T is routinely deployed in automotive body electronics and sensor modules where its 1500 W surge rating meets ISO 7637-2 requirements.
Does the 1.5SMC75CA-M3/57T have polarity markings?
No - the 1.5SMC75CA-M3/57T is a bidirectional TVS diode and carries no polarity marking (e.g., cathode band) on its SMC (DO-214AB) package. Its symmetrical internal structure allows either terminal to serve as anode or cathode depending on transient polarity, simplifying PCB layout and eliminating orientation errors during automated assembly. This distinguishes it from unidirectional variants like 1.5SMC75A-M3/57T.
What is the thermal resistance of the 1.5SMC75CA-M3/57T in standard mounting conditions?
The 1.5SMC75CA-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 8.0 mm × 8.0 mm copper pad per terminal, per Vishay Document 88303. This value assumes still air conditions and defines the steady-state temperature rise above ambient at 6.5 W DC power dissipation. For pulsed operation, thermal inertia allows brief power bursts far exceeding this limit without junction overheating.
How does the 1.5SMC75CA-M3/57T compare to unidirectional versions like 1.5SMC75A-M3/57T?
The 1.5SMC75CA-M3/57T provides identical VWM, VBR, and VC ratings as the unidirectional 1.5SMC75A-M3/57T but operates symmetrically in both directions - critical for protecting AC signals, differential buses, or floating grounds. Unlike the unidirectional version, it lacks a cathode band and cannot be used for DC rectification. The 1.5SMC75CA-M3/57T is the correct choice when surge polarity is undefined or bidirectional.
1.5SMC75CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
1.5SMC75CA-M3/57T FAQ
1.How can I place an order for 1.5SMC75CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC75CA-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 1.5SMC75CA-M3/57T reliable?
The price and inventory of 1.5SMC75CA-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 1.5SMC75CA-M3/57T is usually 5 days.
3.What payment methods are accepted for 1.5SMC75CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC75CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC75CA-M3/57T?
1.5SMC75CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC75CA-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 1.5SMC75CA-M3/57T?
For technical support, including 1.5SMC75CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC75CA-M3/57T requirements.
6.How does Aetrix verify that 1.5SMC75CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All 1.5SMC75CA-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 1.5SMC75CA-M3/57T meets industry standards.
7.What is the process for return or replacement of 1.5SMC75CA-M3/57T?
All 1.5SMC75CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC75CA-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 1.5SMC75CA-M3/57T part is unused and in its original packaging.
Return procedure for 1.5SMC75CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC75CA-M3/57T Tags
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