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Vishay General Semiconductor - Diodes Division SMPC45AN-M3/I
- Part No.:
- SMPC45AN-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC45AN-M3/I.pdf
- Description:
- TVS DIODE 45VWM 72.7VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:3,809
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Product details
Overview
SMPC45AN-M3/I from Vishay General Semiconductor is a unidirectional surface-mount TransZORB® transient voltage suppressor in the SMPC (TO-277A) package, rated for 45 V stand-off voltage (VWM), 50.0–55.3 V breakdown voltage (VBR), and 1500 W peak pulse power (PPPM) with 72.7 V clamping voltage at 20.6 A. It protects MOSFETs and ICs against inductive switching transients in automotive and industrial power electronics.
For engineers reviewing the SMPC45AN-M3/I datasheet, SMPC45AN-M3/I pinout, SMPC45AN-M3/I application, or SMPC45AN-M3/I equivalent, this device is selected for high-energy surge suppression where low-profile mounting, AEC-Q101 qualification, and stable clamping under 10/1000 μs pulses are required - especially in DC power rails, sensor interfaces, and motor drive protection circuits.
Technical Context
This unidirectional TVS diode operates by avalanche breakdown to clamp transient overvoltages above its VWM of 45 V, delivering precise clamping at ≤72.7 V under 20.6 A IPPM. Its thermal resistance junction-to-ambient is 85–100 °C/W on FR4 PCB, enabling reliable operation up to TJ = 150 °C.
The SMPC45AN-M3/I uses a dual-anode/single-cathode configuration in the SMPC (TO-277A) package, with cathode denoted by a band. It meets J-STD-020 MSL Level 1 and JESD 201 Class 2 whisker resistance, and is halogen-free, RoHS-compliant, and AEC-Q101 qualified.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 45 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 50.0 V / 55.3 V at 1.0 mA - tight breakdown tolerance ensures predictable turn-on threshold |
| VC @ IPPM | 72.7 V at 20.6 A - clamping voltage limits downstream component stress during 10/1000 μs surges |
| PPPM | 1500 W - peak pulse power handling capability per standard 10/1000 μs waveform |
| IR @ VWM | ≤1.0 μA - ultra-low leakage preserves signal integrity and battery life in standby circuits |
| TJ max | +150 °C - enables use in under-hood automotive and high-temperature industrial environments |
| Package | SMPC (TO-277A) - 3-terminal surface-mount package with 1.1 mm typical height for space-constrained layouts |
Pinout & Package
SMPC45AN-M3/I uses the SMPC (TO-277A) package: a 3-terminal surface-mount case with cathode band marking, matte tin-plated leads, and JEDEC-compliant footprint. Dimensions: 4.80 × 3.70 × 1.10 mm (L × W × H). Mounting pad layout per JEDEC TO-277A spec.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Primary anode terminal | Connected to protected line (e.g., +12 V rail); forms one half of dual-anode structure |
| Anode 2 | Secondary anode terminal | Internally tied to Anode 1; enables symmetric current sharing and lower effective dynamic impedance |
| Cathode | Common cathode terminal | Connected to ground or low-side reference; band-marked end; carries full surge current during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile | 1.1 mm typical height - fits beneath low-clearance shields and in ultra-thin power modules |
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS power supplies |
| Low incremental surge resistance | Enables tighter clamping (72.7 V) at 20.6 A - reduces voltage overshoot on sensitive gate drivers |
| Halogen-free & RoHS-compliant | M3 suffix confirms compliance with environmental regulations for industrial and automotive manufacturing |
| MSL Level 1 | Reflow-compatible up to 260 °C peak - supports single-pass automated assembly without moisture sensitivity concerns |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Suppressing load-dump and inductive kickback transients on 12 V/24 V vehicle power buses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input. Use Value: Clamps 1500 W surges to ≤72.7 V within nanoseconds, preventing damage to upstream regulators and microcontrollers. |
Use Scenario: Protecting IGBT/MOSFET gate drivers from Miller-induced voltage spikes during fast switching. IC Role / Device Role / Timing Role: TVS connected across gate-source terminals to clamp dv/dt-induced overshoot. Use Value: Sub-100 ns response and low clamping voltage preserve gate oxide integrity and prevent false turn-on. |
| Sensor Signal Line Protection | Telecom DC Power Interface |
Use Scenario: Shielding analog and digital sensor outputs (e.g., temperature, pressure) from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS installed at connector entry point on PCB, shunting transients to chassis ground. Use Value: 1.0 μA max leakage avoids signal offset errors; 72.7 V clamping prevents ADC saturation or interface latch-up. |
Use Scenario: Safeguarding -48 V telecom power inputs against lightning-induced surges and hot-swap transients. IC Role / Device Role / Timing Role: Primary unidirectional TVS on feed line before DC-DC isolation stage. Use Value: 1500 W PPPM rating handles IEC 61000-4-5 Level 4 surges; TO-277A package supports high-current trace routing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ45A-E3/5A | DO-214AC package; 45 V VWM; 73.0 V VC @ 19.3 A; 400 W PPPM | Lower power rating and larger footprint - suitable only for sub-500 W surge requirements | Select when board space allows DO-214AC and system-level surge energy is <500 W |
| SMCJ45A-M3/57T | SMC (DO-214AB) package; 45 V VWM; 72.7 V VC @ 20.6 A; 1500 W PPPM; same electrical specs but larger body (7.11 × 6.22 mm) | Same clamping performance but 5.5× higher thermal mass - better for sustained surge duty cycles | Choose when thermal derating margin is critical and PCB layout accommodates larger outline |
Compared with SMAJ45A-E3/5A and SMCJ45A-M3/57T, the SMPC45AN-M3/I delivers identical 1500 W surge capability and clamping voltage in a 4.8 × 3.7 mm footprint - making it optimal for space-constrained automotive ECUs and compact industrial drives where height ≤1.1 mm is mandatory.
Availability
SMPC45AN-M3/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial motor drive gate protection, and telecom DC power interface applications requiring stable component supply, AEC-Q101 qualification, and consistent surge performance across production batches.
Supply support for SMPC45AN-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, and protection devices with emphasis on reliability, automotive qualification, and high-power density design.
The SMPC series was developed for high-energy transient suppression in space-constrained automotive and industrial systems, combining AEC-Q101 qualification with ultra-low-profile packaging and precise clamping performance.
FAQ
What is the clamping voltage of SMPC45AN-M3/I at its rated peak pulse current?
The SMPC45AN-M3/I has a maximum clamping voltage (VC) of 72.7 V at its rated peak pulse current (IPPM) of 20.6 A under a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay Document 89116 and ensures predictable overvoltage limiting for downstream components like MOSFETs and controllers.
Is SMPC45AN-M3/I AEC-Q101 qualified?
Yes, SMPC45AN-M3/I is AEC-Q101 qualified. The "AN" suffix in the part number explicitly denotes AEC-Q101 qualification, and the M3 suffix confirms halogen-free, RoHS-compliant construction. This makes SMPC45AN-M3/I suitable for automotive applications including engine control, body electronics, and ADAS power domains.
What does the "/I" suffix mean in SMPC45AN-M3/I?
The "/I" suffix in SMPC45AN-M3/I indicates packaging in 13-inch diameter plastic tape and reel, with a base quantity of 6500 units per reel. This format supports high-volume automated placement and is specified in Vishay's ordering information table (Document 89116, page 3).
How does the dual-anode configuration of SMPC45AN-M3/I improve surge performance?
The dual-anode structure in SMPC45AN-M3/I lowers effective dynamic impedance during surge events, resulting in more stable clamping voltage and improved current sharing. This architecture contributes to its 72.7 V VC rating at 20.6 A and supports robust performance under repetitive transient stress in motor drive and power supply applications.
Can SMPC45AN-M3/I be used in bidirectional configurations?
No, SMPC45AN-M3/I is strictly unidirectional. Its internal structure features two anodes and one cathode, designed only for suppression of positive-going transients relative to ground. For bidirectional protection, a separate device such as SMPC45CA-M3/I (if available) or back-to-back unidirectional TVS pair would be required.
SMPC45AN-M3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 45V
- Voltage - Breakdown (Min):
- 50V
- Voltage - Clamping (Max) @ Ipp:
- 72.7V
- Current - Peak Pulse (10/1000µs):
- 20.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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:
- TO-277A (SMPC)
SMPC45AN-M3/I FAQ
1.How can I place an order for SMPC45AN-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC45AN-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 SMPC45AN-M3/I reliable?
The price and inventory of SMPC45AN-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 SMPC45AN-M3/I is usually 5 days.
3.What payment methods are accepted for SMPC45AN-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC45AN-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC45AN-M3/I?
SMPC45AN-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC45AN-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 SMPC45AN-M3/I?
For technical support, including SMPC45AN-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC45AN-M3/I requirements.
6.How does Aetrix verify that SMPC45AN-M3/I is sourced from the original manufacturer or authorized distributors?
All SMPC45AN-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 SMPC45AN-M3/I meets industry standards.
7.What is the process for return or replacement of SMPC45AN-M3/I?
All SMPC45AN-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMPC45AN-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 SMPC45AN-M3/I part is unused and in its original packaging.
Return procedure for SMPC45AN-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC45AN-M3/I Tags
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