My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMPC45AN-M3/H
- Part No.:
- SMPC45AN-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC45AN-M3/H.pdf
- Description:
- TVS DIODE 45VWM 72.7VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:7,571
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMPC45AN-M3/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the TRANSZORB® family, designed for clamping inductive-switching transients and ESD events on power rails and signal lines. It features a 45.0 V stand-off voltage (VWM), 50.0–55.3 V breakdown voltage (VBR), 72.7 V maximum clamping voltage (VC) at 20.6 A peak pulse current, and 1500 W peak pulse power (10/1000 μs). It is used in automotive sensor units and industrial control I/O protection.
For engineers reviewing the SMPC45AN-M3/H datasheet, SMPC45AN-M3/H pinout, SMPC45AN-M3/H application, or SMPC45AN-M3/H equivalent, this page delivers verified electrical specs, package dimensions, thermal derating curves, AEC-Q101 qualification status, and direct alternatives for overvoltage protection design in space-constrained PCB layouts.
Technical Context
This device operates as a unidirectional avalanche diode with fast response time (<1 ns) and low incremental surge resistance, enabling effective suppression of fast-rising transients such as load dump, ISO 7637-2 pulses, and ESD per IEC 61000-4-2. Its TO-277A (SMPC) package supports dual-anode/cathode configuration for enhanced thermal dissipation when mounted with cathode on heatsink.
The SMPC45AN-M3/H is rated for TJ = -55 °C to +150 °C, meets MSL Level 1 (260 °C reflow), and is halogen-free, RoHS-compliant, and AEC-Q101 qualified - confirming suitability for automotive front-end electronics and under-hood modules where reliability under thermal cycling and humidity is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 45.0 V - Maximum continuous reverse operating voltage before clamping begins; sets minimum system rail margin for reliable non-conduction during normal operation. |
| VBR min/max | 50.0 V / 55.3 V at 1.0 mA - Confirmed avalanche onset range; ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 72.7 V at 20.6 A (10/1000 μs) - Clamping voltage under worst-case surge; defines maximum stress imposed on downstream ICs during transient events. |
| PPPM | 1500 W - Peak pulse power handling capability; enables robust protection against high-energy transients without failure. |
| RθJA | 85–100 °C/W - Junction-to-ambient thermal resistance on FR4 (2 oz Cu); determines safe power derating above 25 °C ambient. |
| Polarity | Unidirectional - Requires correct orientation relative to DC bias; cathode band denotes terminal connected to protected circuit's ground or low-side reference. |
| Package | SMPC (TO-277A) - Surface-mount, 3-terminal, low-profile (1.1 mm height) package with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. |
Pinout & Package
SMPC45AN-M3/H uses the SMPC (TO-277A) package: a 3-terminal surface-mount outline with cathode band marking, conforming to JEDEC TO-277A mechanical standard. Dimensions: 4.80 × 3.70 × 1.10 mm (L × W × H), with 0.75 mm nominal lead pitch and 0.268" × 0.186" mounting pad layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Primary anode connection | Connected to protected line (e.g., 48 V supply rail); forms one half of dual-anode structure for improved current sharing and thermal distribution. |
| Anode 2 | Secondary anode connection | Electrically tied to Anode 1 internally; provides redundant bond wire path and lower effective surge resistance under high-current transients. |
| Cathode | Clamping reference node | Connected to system ground or low-side return; polarity band identifies this terminal; must be thermally anchored for optimal RθJM (2.5–3.0 °C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMPC package | 1.1 mm typical height enables use in ultra-thin automotive ECUs and compact industrial sensors where Z-height is constrained. |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS camera modules, and body electronics requiring extended temperature and lifetime reliability. |
| Halogen-free & RoHS | Complies with environmental regulations for global OEM supply chains; no brominated flame retardants or lead beyond exemption limits. |
| MSL Level 1 rating | Supports single-reflow assembly at 260 °C peak without moisture-induced damage; eliminates pre-bake requirement in SMT lines. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients (e.g., ISO 16750-2 pulse 5a), improving protection margin for 48 V automotive systems. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN FD transceivers and analog sensor inputs (e.g., pressure, temperature) in 12 V/48 V vehicle subsystems from load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor supply rail and chassis ground to clamp transients before they reach precision ADCs or communication ICs. Use Value: Limits clamped voltage to ≤72.7 V during 20.6 A surge, preserving integrity of 3.3 V/5 V interface logic and preventing latch-up in downstream ASICs. |
Use Scenario: Safeguarding digital input channels on programmable logic controllers exposed to inductive kickback from solenoids, relays, and motor drivers. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V DC input terminals to absorb repetitive switching transients while maintaining <1 μA leakage at rated VWM. Use Value: Enables >100,000 surge cycles without degradation due to low IR (≤1 μA at 45 V), extending field service life in factory automation environments. |
| Telecom Power Rail Protection | Consumer USB-C Power Delivery |
Use Scenario: Shielding PoE-powered Ethernet switches and base station RF modules from lightning-induced surges on 48 V DC power feeds. IC Role / Device Role / Timing Role: Primary clamping device on midspan PSE output, coordinated with upstream GDT or MOV for staged protection architecture. Use Value: Delivers 1500 W peak pulse power handling with <1 ns response, ensuring sub-microsecond clamping before sensitive PHY ICs experience overstress. |
Use Scenario: Overvoltage protection on USB-C CC and VBUS lines in portable chargers and docking stations subjected to hot-plug and adapter fault conditions. IC Role / Device Role / Timing Role: Secondary TVS after primary fuse and common-mode choke, absorbing residual differential-mode transients exceeding 20 V. Use Value: Maintains 45 V standoff while clamping to 72.7 V - compatible with USB PD 3.0 48 V profiles and prevents damage to E-Marker ICs and port controllers. |
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 (Vishay) | DO-214AC (SMA) package; 45 V VWM; 73.0 V VC @ 17.9 A; 400 W PPPM; not AEC-Q101 qualified. | Limited to commercial/industrial use; lacks automotive qualification and lower clamping performance at same VWM. | Select when cost-sensitive, non-automotive designs require legacy SMA footprint and lower surge rating suffices. |
| TPSMD45H (Texas Instruments) | DO-214AB (SMC) package; 45 V VWM; 72.0 V VC @ 20.8 A; 1500 W PPPM; AEC-Q101 qualified; higher RθJA (~120 °C/W). | Same clamping performance but larger footprint (7.11 × 6.22 mm vs. 4.80 × 3.70 mm); less suitable for dense automotive PCBs. | Choose when existing SMC layout exists or when higher thermal mass offsets higher junction-to-ambient resistance. |
Compared with SMAJ45A-E3/5A and TPSMD45H, SMPC45AN-M3/H delivers identical 45 V standoff and 1500 W surge rating in a 40 % smaller footprint, with validated AEC-Q101 compliance and superior thermal resistance (RθJM = 2.5–3.0 °C/W) when cathode is heatsinked - making it optimal for next-gen automotive edge nodes.
Availability
SMPC45AN-M3/H is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom power supplies, and USB-C PD accessories requiring stable component supply, long-term lifecycle support, and AEC-Q101 assurance.
Supply support for SMPC45AN-M3/H 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific optimization.
The SMPC series belongs to Vishay's TRANSZORB® TVS platform, engineered specifically for high-energy transient suppression in automotive, industrial, and telecom infrastructure where compact size, AEC-Q101 compliance, and precise clamping are mandatory.
FAQ
What is the exact breakdown voltage range for SMPC45AN-M3/H?
The SMPC45AN-M3/H has a specified breakdown voltage (VBR) range of 50.0 V to 55.3 V at 1.0 mA test current, measured per ANSI/IEEE C62.35 standards. This range ensures consistent avalanche initiation across temperature and manufacturing variance, and is confirmed in the Vishay Document Number 89116, Revision 17-Sep-2021, Table on page 2.
Is SMPC45AN-M3/H qualified for automotive applications?
Yes, SMPC45AN-M3/H is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (Document Number 89116, page 1 and Ordering Information table on page 3). The "AN" suffix and "HM3" base code denote AEC-Q101 qualification, and the device is approved for use in automotive powertrain, chassis, and body electronics.
What does the "/H" suffix mean in SMPC45AN-M3/H?
The "/H" suffix in SMPC45AN-M3/H indicates the preferred packaging option: 7-inch diameter plastic tape and reel, with a base quantity of 1500 units. This is defined in the Ordering Information section (page 3) of the Vishay datasheet, and corresponds to JEDEC-standard carrier format for automated SMT placement.
How does the dual-anode configuration of SMPC45AN-M3/H improve performance?
The dual-anode (Anode 1 + Anode 2) structure in SMPC45AN-M3/H lowers effective surge resistance and improves current sharing during high-peak transients, reducing localized heating and enhancing reliability. This configuration is intrinsic to the SMPC (TO-277A) package and is validated in Vishay's thermal characterization data (RθJM = 2.5–3.0 °C/W when cathode is heatsinked).
What is the maximum clamping voltage of SMPC45AN-M3/H under standard test conditions?
The maximum clamping voltage (VC) of SMPC45AN-M3/H is 72.7 V at 20.6 A peak pulse current with a 10/1000 μs waveform, as published in the Electrical Characteristics table (page 2) of the Vishay datasheet. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
SMPC45AN-M3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- TransZorb®, eSMP®
- 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/H FAQ
1.How can I place an order for SMPC45AN-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC45AN-M3/H 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/H reliable?
The price and inventory of SMPC45AN-M3/H 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/H is usually 5 days.
3.What payment methods are accepted for SMPC45AN-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC45AN-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC45AN-M3/H?
SMPC45AN-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC45AN-M3/H 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/H?
For technical support, including SMPC45AN-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC45AN-M3/H requirements.
6.How does Aetrix verify that SMPC45AN-M3/H is sourced from the original manufacturer or authorized distributors?
All SMPC45AN-M3/H 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/H meets industry standards.
7.What is the process for return or replacement of SMPC45AN-M3/H?
All SMPC45AN-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMPC45AN-M3/H, 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/H part is unused and in its original packaging.
Return procedure for SMPC45AN-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC45AN-M3/H 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 …
