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Vishay General Semiconductor - Diodes Division SMPC43AN-M3/I
- Part No.:
- SMPC43AN-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC43AN-M3/I.pdf
- Description:
- TVS DIODE 43VWM 69.4VC TO277A
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMPC43AN-M3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the SMPC (TO-277A) package, designed for clamping transient overvoltages on power and signal lines. It features a 43.0 V stand-off voltage (VWM), 47.8–52.8 V breakdown voltage (VBR), 69.4 V maximum clamping voltage (VC) at 21.6 A peak pulse current, and 1500 W peak pulse power (10/1000 μs). It is AEC-Q101 qualified and used to protect MOSFETs and sensor signal lines in automotive ECUs.
For engineers reviewing the SMPC43AN-M3/I datasheet, SMPC43AN-M3/I pinout, SMPC43AN-M3/I application, or SMPC43AN-M3/I equivalent, key selection criteria include clamping performance under 10/1000 μs surges, thermal resistance (RθJA ≤ 100 °C/W), unidirectional polarity, AEC-Q101 qualification status, and compatibility with automated SMT placement on FR4 PCBs.
Technical Context
This TVS diode operates as a unidirectional clamp, conducting only when reverse voltage exceeds VBR, thereby shunting surge energy to ground while limiting downstream voltage to ≤69.4 V. Its low incremental surge resistance and fast response time ensure effective protection against inductive switching transients and ESD events.
The device uses a planar junction structure in a molded SMPC (TO-277A) package with matte tin-plated leads, rated for MSL Level 1 (260 °C reflow), and optimized for thermal dissipation with RθJM ≤ 3 °C/W when mounted on heatsink. It is halogen-free, RoHS-compliant, and qualified per AEC-Q101 for automotive use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 43.0 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin below breakdown. |
| VBR min/max | 47.8 V / 52.8 V at 1.0 mA - Confirmed breakdown threshold range; ensures predictable turn-on during transients. |
| VC @ IPPM | 69.4 V at 21.6 A (10/1000 μs) - Clamped voltage seen by protected circuit; determines maximum stress on downstream components. |
| PPPM | 1500 W (10/1000 μs) - Peak surge power handling capability; supports high-energy transients common in automotive load-dump scenarios. |
| RθJA | ≤ 100 °C/W - Thermal resistance junction-to-ambient on standard FR4 PCB; enables reliable operation up to +150 °C junction temperature. |
| Polarity | Unidirectional - Conducts only in reverse bias; suitable for DC-biased lines where forward conduction must be avoided. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
Pinout & Package
Package: SMPC (TO-277A), surface-mount, 3-terminal configuration with cathode band marking. Dimensions: 4.80 × 4.40 × 1.10 mm (L × W × H), compliant with JEDEC TO-277A outline. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 reliability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 & Anode 2 | Common anode connection | Internally tied anodes provide low-inductance parallel path for surge current return; requires single-point grounding in layout. |
| Cathode | Transient clamping node | Connected to protected line; conducts when voltage exceeds VBR, diverting surge current to ground through this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.1 mm height) | Enables use in space-constrained automotive modules and portable industrial sensors without compromising board stacking height. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns), improving protection margin for sensitive gate drivers and ADC inputs. |
| AEC-Q101 qualification | Validates reliability for automotive underhood and cabin applications, including temperature cycling, humidity, and mechanical shock testing. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without preconditioning, simplifying manufacturing integration and reducing process risk. |
| Halogen-free & RoHS-compliant | Meets global environmental compliance requirements for automotive OEMs and industrial equipment manufacturers. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Protection of 12 V supply rail and CAN transceiver I/O against load-dump and inductive kickback from fuel injectors and solenoids. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between power input and local regulator, acting as first-line transient shunt. Use Value: Limits transient voltage to ≤69.4 V during 1500 W surges, preventing latch-up or permanent damage to 5 V/3.3 V logic and CAN PHY circuits. |
Use Scenario: Safeguarding analog feedback signals (e.g., current sense, temperature) from motor phase switching noise and ground bounce. IC Role / Device Role / Timing Role: Signal-line TVS connected across differential pair or single-ended sensor output to suppress sub-100 ns EFT bursts. Use Value: Maintains signal integrity by clamping transients before they exceed ADC input absolute maximum ratings, avoiding measurement corruption. |
| Automotive ADAS Camera Module | Telecom Power Supply Input |
Use Scenario: Protecting MIPI CSI-2 data lines and 3.3 V bias rails in front-facing camera modules exposed to ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed adjacent to connector entry point to absorb coupled transients before IC interface. Use Value: Delivers 69.4 V clamping at 21.6 A with minimal parasitic capacitance, preserving high-speed signal rise/fall times and eye diagram integrity. |
Use Scenario: Input-stage surge suppression on 48 V telecom rectifier outputs subject to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary clamping element in series with upstream fuse and downstream DC-DC converter, absorbing bulk surge energy. Use Value: Handles 1500 W peak power with RθJA ≤ 100 °C/W, enabling sustained operation in sealed, convection-limited telecom enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ43A-E3/5A (Vishay) | DO-214AC (SMA) package; higher RθJA (~140 °C/W); same VWM/VBR/VC specs but lower PPPM (400 W). | Not AEC-Q101 qualified; suited for cost-sensitive industrial/commercial designs where automotive qualification is not required. | Select when footprint flexibility exists and thermal budget allows higher junction temperature rise under surge conditions. |
| TPSMD43A (Texas Instruments) | Same SMPC (TO-277A) package; identical VWM (43 V), VC (69.4 V), and PPPM (1500 W); AEC-Q101 qualified; slightly tighter VBR tolerance (47.8–51.7 V). | Pinout and mounting pad layout fully compatible; validated for same automotive subsystems including body control modules. | Preferred drop-in alternative if TI sourcing preference or dual-sourcing strategy applies; no PCB or layout changes needed. |
Compared with SMAJ43A-E3/5A, SMPC43AN-M3/I offers superior thermal performance and automotive qualification; compared with TPSMD43A, it provides identical clamping behavior and mechanical fit but differs in manufacturer-specific reliability test reporting and long-term supply chain commitments.
Availability
SMPC43AN-M3/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive protection, and telecom power input staging requiring stable component supply, AEC-Q101 compliance, and high-reliability transient suppression.
Supply support for SMPC43AN-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, TVS devices, and power MOSFETs with emphasis on reliability, efficiency, and application-specific optimization.
The SMPC series was developed to deliver high-power transient suppression in ultra-low-profile surface-mount packages for automotive and industrial systems where space, thermal performance, and qualification rigor are critical.
FAQ
What is the clamping voltage of SMPC43AN-M3/I under a 10/1000 μs surge?
The SMPC43AN-M3/I exhibits a maximum clamping voltage (VC) of 69.4 V when subjected to its rated peak pulse current of 21.6 A with a 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 89116 and defines the upper voltage limit imposed on protected circuitry during standardized surge events. The SMPC43AN-M3/I maintains this clamping performance across its full operating temperature range.
Is SMPC43AN-M3/I qualified for automotive applications?
Yes, SMPC43AN-M3/I is AEC-Q101 qualified, as confirmed in the Vishay datasheet revision 17-Sep-2021 (document 89116). This qualification covers stress tests including temperature cycling, high-temperature operating life, and mechanical shock-validating its suitability for under-hood and cabin automotive systems. The "HM3" suffix denotes AEC-Q101 grade, and SMPC43AN-M3/I falls within the SMPC22AN–SMPC85AN qualified range.
What does the "/I" suffix mean in SMPC43AN-M3/I?
The "/I" suffix in SMPC43AN-M3/I indicates packaging in 13-inch diameter plastic tape and reel, with a base quantity of 6500 units per reel. This format is optimized for high-volume automated SMT assembly lines. The "M3" prefix confirms halogen-free, RoHS-compliant, industrial-grade construction, while "AN" denotes the AEC-Q101 qualified variant within the SMPC family.
How does the SMPC (TO-277A) package improve thermal performance over SMA (DO-214AC)?
The SMPC (TO-277A) package used by SMPC43AN-M3/I achieves RθJA ≤ 100 °C/W on standard FR4 PCBs-significantly better than typical SMA packages (~140 °C/W)-due to its larger copper slug area and optimized thermal path to the PCB. Its dual-anode configuration also reduces inductance and improves surge current sharing, directly enhancing clamping consistency during repetitive transients. This makes SMPC43AN-M3/I more robust in thermally demanding automotive environments.
Can SMPC43AN-M3/I replace SMPC43A-M3/I in a design?
No-SMPC43AN-M3/I and SMPC43A-M3/I are not interchangeable. SMPC43AN-M3/I is AEC-Q101 qualified with tighter leakage current (IR ≤ 1.0 μA at VWM) and specified for automotive use, whereas SMPC43A-M3/I is industrial-grade with higher IR (≤ 1500 μA) and no automotive qualification. Substituting without validation risks non-compliance in automotive programs and potential field failure under extended temperature cycling.
SMPC43AN-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):
- 43V
- Voltage - Breakdown (Min):
- 47.8V
- Voltage - Clamping (Max) @ Ipp:
- 69.4V
- Current - Peak Pulse (10/1000µs):
- 21.6A
- 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)
SMPC43AN-M3/I FAQ
1.How can I place an order for SMPC43AN-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC43AN-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 SMPC43AN-M3/I reliable?
The price and inventory of SMPC43AN-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 SMPC43AN-M3/I is usually 5 days.
3.What payment methods are accepted for SMPC43AN-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC43AN-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC43AN-M3/I?
SMPC43AN-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC43AN-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 SMPC43AN-M3/I?
For technical support, including SMPC43AN-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC43AN-M3/I requirements.
6.How does Aetrix verify that SMPC43AN-M3/I is sourced from the original manufacturer or authorized distributors?
All SMPC43AN-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 SMPC43AN-M3/I meets industry standards.
7.What is the process for return or replacement of SMPC43AN-M3/I?
All SMPC43AN-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMPC43AN-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 SMPC43AN-M3/I part is unused and in its original packaging.
Return procedure for SMPC43AN-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC43AN-M3/I Tags
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