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Vishay General Semiconductor - Diodes Division SMPC48AN-M3/I
- Part No.:
- SMPC48AN-M3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC48AN-M3/I.pdf
- Description:
- TVS DIODE 48VWM 77.4VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:5,033
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Product details
Overview
SMPC48AN-M3/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the TRANSZORB® family, designed for high-energy surge protection on DC power rails and signal lines. It features a 48.0 V stand-off voltage (VWM), 53.3–58.9 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and clamps transients to 77.4 V at 19.4 A, making it suitable for protecting MOSFETs and sensor interfaces in industrial power supplies.
For engineers reviewing the SMPC48AN-M3/I datasheet, SMPC48AN-M3/I pinout, SMPC48AN-M3/I application, or SMPC48AN-M3/I equivalent, key selection criteria include unidirectional polarity, TO-277A (SMPC) package compatibility, 1.25 W steady-state power dissipation, and AEC-Q101 qualification eligibility via HM3 suffix - critical for automotive-grade ESD/surge resilience in harsh environments.
Technical Context
This device operates as a silicon avalanche diode with fast response time (<1 ns) and low incremental surge resistance, enabling effective clamping of inductive-switching transients and lightning-induced surges. Its unidirectional configuration supports DC-biased protection paths where reverse conduction must be blocked until breakdown threshold is exceeded.
The SMPC48AN-M3/I uses a dual-anode/single-cathode topology in the SMPC (TO-277A) package, with cathode denoted by a band. Thermal performance is characterized by RθJA ≤ 100 °C/W (FR4, 2 oz copper) and maximum junction temperature of 150 °C, supporting reliable operation under repeated surge stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48.0 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 53.3 V / 58.9 V at 1.0 mA - Ensures consistent avalanche initiation across production lots |
| VC @ IPPM | 77.4 V at 19.4 A (10/1000 μs) - Clamping voltage defines worst-case overvoltage seen by protected IC |
| PPPM | 1500 W - Peak surge energy handling capacity for standardized transient waveforms |
| PD @ 25°C | 1.25 W - Steady-state power limit for thermal management on standard PCB layout |
| TJ max | +150 °C - Enables use in under-hood automotive and industrial ambient conditions |
| Polarity | Unidirectional - Blocks reverse current until breakdown; required for DC rail protection |
Pinout & Package
Package: SMPC (TO-277A), surface-mount, very low profile (1.1 mm typical height), halogen-free, RoHS-compliant, MSL level 1 (260 °C reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 & Anode 2 | Common anode terminals | Electrically tied internally; connect to protected line requiring clamping to ground |
| Cathode | Cathode terminal | Connect to system ground or low-impedance return path; marked by band on package |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.1 mm) | Enables placement in space-constrained modules such as motor control boards and automotive ECUs without height interference |
| Low incremental surge resistance | Minimizes voltage overshoot during high di/dt events, improving protection margin for downstream MOSFETs |
| Meets JESD201 Class 2 whisker test | Ensures long-term solder joint reliability in vibration-prone applications like transportation electronics |
| AEC-Q101 qualified option (HM3 suffix) | Validated for automotive use including engine control, body electronics, and ADAS sensor interfaces |
| UL 94 V-0 molding compound | Provides flame-retardant housing essential for safety-critical industrial and telecom equipment |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive I/O Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed control circuits in start-stop systems against load dump and inductive kickback. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients above 48 V. Use Value: Limits voltage to ≤77.4 V during 19.4 A surges, preventing gate oxide damage to 60 V-rated MOSFETs. | Use Scenario: Safeguarding analog input channels of PLC analog I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Front-end transient suppressor on 24 V sensor supply lines before precision ADC front-ends. Use Value: Fast <1 ns response ensures clamping occurs before sensitive op-amps or SAR ADCs experience overvoltage stress. |
| Telecom DC Power Feeds | Consumer Appliance Control Boards |
Use Scenario: Surge protection on -48 V DC distribution in central office equipment per ITU-T K.20/K.21 standards. IC Role / Device Role / Timing Role: Bidirectional-capable design not required; unidirectional SMPC48AN-M3/I used on negative rail with cathode grounded. Use Value: 1500 W PPPM meets Level 4 telecom surge immunity requirements for outdoor plant interface cards. | Use Scenario: Protecting microcontroller GPIOs and relay drivers in smart HVAC controllers subjected to relay coil flyback. IC Role / Device Role / Timing Role: Localized TVS mounted adjacent to relay driver IC output pins. Use Value: 1.1 mm height allows placement directly next to SOIC packages without shadowing, minimizing loop inductance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ48A-E3/5A (Vishay) | Same VWM (48 V), lower PPPM (400 W), SMA package (higher RθJA ≈ 150 °C/W) | Limited to lower-energy transients; unsuitable for 1500 W load dump events | Select SMPC48AN-M3/I when >1 kW surge handling and lower thermal resistance are required |
| 1.5KE48A (ON Semiconductor) | Higher VWM tolerance (±5%), through-hole DO-201 package, 1500 W rating | Not SMT-compatible; requires board real estate and wave-solder process | Choose SMPC48AN-M3/I for automated assembly, space savings, and thermal performance on FR4 |
Compared with SMAJ48A-E3/5A and 1.5KE48A, the SMPC48AN-M3/I delivers identical voltage ratings with superior surge robustness in a compact, low-profile SMT package optimized for high-volume manufacturing and thermally demanding layouts.
Availability
SMPC48AN-M3/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial motor drive I/O protection, and telecom DC power feeds requiring stable component supply and full traceability.
Supply support for SMPC48AN-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 and application-specific validation.
The SMPC series was developed for high-power, low-profile transient suppression in automotive, industrial, and telecom systems where space, thermal performance, and AEC-Q101 compliance are critical.
FAQ
What is the exact breakdown voltage range for SMPC48AN-M3/I?
The SMPC48AN-M3/I has a specified breakdown voltage (VBR) range of 53.3 V to 58.9 V at 1.0 mA test current, per Vishay Document Number 89116. This range ensures reliable avalanche initiation while accommodating process variation. The value is measured across both anode terminals to cathode and applies to all units bearing the PBF marking code.
Is SMPC48AN-M3/I AEC-Q101 qualified?
No - SMPC48AN-M3/I carries the industrial-grade M3 suffix. AEC-Q101 qualification is only available with the HM3 suffix (e.g., SMPC48ANHM3/I). The HM3 variant undergoes additional stress testing per AEC-Q101 Rev D, including accelerated life testing and temperature cycling, while SMPC48AN-M3/I meets industrial reliability standards but not automotive qualification requirements.
What does the "I" suffix indicate in SMPC48AN-M3/I?
The "I" suffix in SMPC48AN-M3/I denotes packaging in 13-inch diameter plastic tape and reel, with a base quantity of 6500 units per reel. This contrasts with the "H" suffix (7-inch reel, 1500 units). Both "H" and "I" variants share identical electrical and thermal specifications; the suffix solely identifies reel size and quantity for automated pick-and-place handling.
Can SMPC48AN-M3/I be used in bidirectional configurations?
No - SMPC48AN-M3/I is strictly unidirectional. Its internal structure consists of two anodes and one cathode (Anode-Anode-Cathode), enabling clamping only when the cathode is at lower potential than either anode. For bidirectional protection, two SMPC48AN-M3/I devices must be connected in series opposition, or a dedicated bidirectional part (e.g., SMPC48CA) should be selected.
What is the thermal resistance junction-to-ambient for SMPC48AN-M3/I?
The maximum junction-to-ambient thermal resistance (RθJA) for SMPC48AN-M3/I is 100 °C/W when mounted on a standard FR4 PCB with 2 oz copper and the recommended pad layout per JEDEC TO-277A. Typical RθJA is 85 °C/W. This value assumes no external heatsinking and defines the allowable power derating above 25 °C ambient temperature.
SMPC48AN-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):
- 48V
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 77.4V
- Current - Peak Pulse (10/1000µs):
- 19.4A
- 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)
SMPC48AN-M3/I FAQ
1.How can I place an order for SMPC48AN-M3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC48AN-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 SMPC48AN-M3/I reliable?
The price and inventory of SMPC48AN-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 SMPC48AN-M3/I is usually 5 days.
3.What payment methods are accepted for SMPC48AN-M3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC48AN-M3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC48AN-M3/I?
SMPC48AN-M3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC48AN-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 SMPC48AN-M3/I?
For technical support, including SMPC48AN-M3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC48AN-M3/I requirements.
6.How does Aetrix verify that SMPC48AN-M3/I is sourced from the original manufacturer or authorized distributors?
All SMPC48AN-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 SMPC48AN-M3/I meets industry standards.
7.What is the process for return or replacement of SMPC48AN-M3/I?
All SMPC48AN-M3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMPC48AN-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 SMPC48AN-M3/I part is unused and in its original packaging.
Return procedure for SMPC48AN-M3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC48AN-M3/I Tags
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