My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMC5K75A-M3/I
- Part No.:
- SMC5K75A-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMC5K75A-M3/I.pdf
- Description:
- TVS DIODE 75VWM 121VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,847
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMC5K75A-M3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, designed for high-energy surge protection with 5000 W peak pulse power (10/1000 μs), 121 V maximum clamping voltage at 41.3 A IPPM, and 75 V standoff voltage. It protects MOSFETs, ICs, and sensor signal lines in automotive and industrial power electronics.
For engineers reviewing the SMC5K75A-M3/I datasheet, SMC5K75A-M3/I pinout, SMC5K75A-M3/I application, or SMC5K75A-M3/I equivalent, key selection criteria include clamping voltage vs. standoff margin, 83.3–92.1 V breakdown range, AEC-Q101 qualification status, thermal resistance (RthJA = 90 °C/W), and 30 kV ESD immunity per IEC 61000-4-2.
Technical Context
This TVS diode operates unidirectionally with a cathode-band polarity marker and is optimized for transient suppression on DC power rails and low-speed signal lines. Its 150 °C maximum junction temperature and MSL Level 1 rating support reflow-compatible assembly on FR4 PCBs with standard 2 oz. copper footprints.
The device delivers 5000 W peak pulse power under 10/1000 μs waveform and sustains 40 kW under 8/20 μs surge-validated by derated IPPM curves up to TJ = 150 °C. Its low incremental surge resistance ensures stable clamping performance across repetitive transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 75 V - Maximum continuous reverse operating voltage before leakage exceeds 1.0 μA; defines safe DC rail margin. |
| VBR min/max | 83.3 V / 92.1 V - Breakdown occurs within this range at 1.0 mA test current; ensures predictable turn-on threshold. |
| VC @ IPPM | 121 V - Clamps 41.3 A (10/1000 μs) surges to ≤121 V, limiting downstream voltage stress. |
| PPPM | 5000 W - Peak pulse power handling capability under standardized 10/1000 μs waveform. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial environments. |
| ESD immunity | 30 kV - Human body model (contact & air discharge); meets IEC 61000-4-2 for system-level ESD robustness. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. Cathode identified by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction; connected to protected circuit ground or low-side return path | Provides reference node for unidirectional clamping; must be tied to lowest potential point in protected path. |
| Cathode | Current exit during reverse-biased transient clamping; connected to protected line (e.g., 12 V rail or sensor input) | Acts as the surge sink node; voltage at this terminal is clamped to ≤121 V during 41.3 A transients. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional clamping architecture | Enables integration on positive-rail DC lines without reverse-bias leakage concerns; avoids bidirectional capacitance penalty. |
| Low incremental surge resistance | Ensures minimal voltage overshoot during fast-rising transients; maintains clamping accuracy across 41.3 A pulses. |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress-though SMC5K75A itself is industrial grade per datasheet note. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C) without baking preconditioning. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Suppressing load-dump and jump-start transients on 24 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and upstream DC-DC converter input. Use Value: Clamps 121 V at 41.3 A to protect downstream regulators rated for ≤36 V input, meeting ISO 7637-2 Pulse 5a requirements. | Use Scenario: Shielding analog inputs of pressure/temperature sensors in factory automation PLCs from inductive switching noise. IC Role / Device Role / Timing Role: Low-capacitance TVS on 0–10 V or 4–20 mA signal lines adjacent to isolation barriers. Use Value: Limits transient-induced offset errors and ADC saturation via sub-100 ns response and 1.0 μA leakage at 75 V. |
| Telecom DC Power Feeds | Computer Peripheral Port Protection |
Use Scenario: Guarding -48 V telecom rectifier outputs against lightning-induced surges in central office equipment. IC Role / Device Role / Timing Role: Cathode-to-rail configuration on negative supply lines feeding PoE injectors and line cards. Use Value: Withstands 40 kW (8/20 μs) surges while maintaining <1.0 μA leakage at rated -48 V standoff, preserving system efficiency. | Use Scenario: Protecting USB-C PD controller VBUS monitoring circuits from hot-swap and cable-insertion spikes. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5–20 V VBUS path upstream of overvoltage detection comparators. Use Value: Prevents false OVP triggering by clamping 121 V transients before they reach sensitive 3.3 V logic, leveraging 150 °C TJ rating for compact layout. |
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-M3/5A | Lower PPPM (600 W), smaller SMB package, same VWM/VBR range, lower IPPM (32.4 A) | Not suitable for 5000 W surge events; limited to lower-energy interfaces like USB or GPIO | Select when board space is constrained and surge energy is ≤600 W. |
| SMC5K75CA-M3/I | Bidirectional variant; symmetric clamping (±121 V), same package and power rating | Required for AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN) | Choose only if protecting balanced differential buses or AC signals where reverse polarity transients occur. |
Compared with SMBJ75A-M3/5A and SMC5K75CA-M3/I, the SMC5K75A-M3/I uniquely delivers 5000 W unidirectional clamping in SMC package-enabling robust protection of high-power DC rails without sacrificing PCB real estate or requiring bidirectional symmetry.
Availability
SMC5K75A-M3/I is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, and telecom DC feed applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMC5K75A-M3/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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and automotive qualification.
The SMC5KxxA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in harsh-environment power electronics where clamping precision, thermal stability, and surge repeatability are critical.
FAQ
What is the breakdown voltage range for SMC5K75A-M3/I?
The SMC5K75A-M3/I has a guaranteed breakdown voltage (VBR) range of 83.3 V to 92.1 V at 1.0 mA test current, measured per ANSI/IEEE C62.35 standards. This tight tolerance ensures consistent turn-on behavior across production lots and supports reliable margining against 75 V standoff voltage in system design.
Is SMC5K75A-M3/I AEC-Q101 qualified?
No, SMC5K75A-M3/I is not AEC-Q101 qualified. Per the Vishay datasheet revision 09-Jan-2024, AEC-Q101 qualification applies only to SMC5K10A through SMC5K20A with HM3 suffix. SMC5K75A-M3/I is rated for industrial-grade operation with full specification compliance across -55 °C to +150 °C.
What is the maximum clamping voltage of SMC5K75A-M3/I at rated peak pulse current?
The SMC5K75A-M3/I clamps to a maximum of 121 V at its rated peak pulse current of 41.3 A under the 10/1000 μs waveform. This value is specified in the Electrical Characteristics table and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
Can SMC5K75A-M3/I be used in bidirectional signal protection?
No, SMC5K75A-M3/I is unidirectional and unsuitable for bidirectional signal lines such as RS-485 or CAN. For those applications, the bidirectional variant SMC5K75CA-M3/I must be used, which provides symmetrical clamping at ±121 V and identical power rating.
What packaging format does SMC5K75A-M3/I ship in?
SMC5K75A-M3/I ships in 13-inch diameter plastic tape and reel format, with a base quantity of 3500 units per reel. The "I" suffix denotes this delivery mode, while "M3" indicates halogen-free, RoHS-compliant construction with JESD 201 Class 2 whisker resistance.
SMC5K75A-M3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 75V
- Voltage - Breakdown (Min):
- 83.3V
- Voltage - Clamping (Max) @ Ipp:
- 121V
- Current - Peak Pulse (10/1000µs):
- 41.3A
- Power - Peak Pulse:
- 5000W (5kW)
- 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-214AB (SMC)
SMC5K75A-M3/I FAQ
1.How can I place an order for SMC5K75A-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMC5K75A-M3/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 SMC5K75A-M3/I reliable?
The price and inventory of SMC5K75A-M3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMC5K75A-M3/I is usually 5 days.
3.What payment methods are accepted for SMC5K75A-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMC5K75A-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMC5K75A-M3/I?
SMC5K75A-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMC5K75A-M3/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 SMC5K75A-M3/I?
For technical support, including SMC5K75A-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMC5K75A-M3/I requirements.
6.How does Aetrix verify that SMC5K75A-M3/I is sourced from the original manufacturer or authorized distributors?
All SMC5K75A-M3/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 SMC5K75A-M3/I meets industry standards.
7.What is the process for return or replacement of SMC5K75A-M3/I?
All SMC5K75A-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMC5K75A-M3/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 SMC5K75A-M3/I part is unused and in its original packaging.
Return procedure for SMC5K75A-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMC5K75A-M3/I Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
