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Vishay General Semiconductor - Diodes Division SMPC48ANHM3/I
- Part No.:
- SMPC48ANHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC48ANHM3/I.pdf
- Description:
- TVS DIODE 48VWM 77.4VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:3,520
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Product details
Overview
SMPC48ANHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the SMPC (TO-277A) package, designed for clamping voltage transients on power and signal lines. It features a 48.0 V stand-off voltage (VWM), 53.3–58.9 V breakdown voltage (VBR), 77.4 V maximum clamping voltage (VC) at 19.4 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 SMPC48ANHM3/I datasheet, SMPC48ANHM3/I pinout, SMPC48ANHM3/I application, or SMPC48ANHM3/I equivalent, key selection criteria include unidirectional polarity, 1.1 mm profile for space-constrained PCBs, MSL Level 1 reflow compatibility, halogen-free RoHS compliance, and thermal resistance (RθJA ≤ 100 °C/W) under standard FR4 mounting.
Technical Context
This device operates as a silicon avalanche diode optimized for transient suppression using a low incremental surge resistance design, enabling fast response time (< 1 ns) and stable clamping performance across temperature. Its dual-anode/cathode configuration supports high-current handling while maintaining low capacitance - critical for protecting high-speed sensor interfaces without signal distortion.
The SMPC48ANHM3/I is thermally rated for TJ = −55 °C to +150 °C and derates linearly above TA = 25 °C per Figure 2. Its TO-277A package uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and meets UL 94 V-0 flammability requirements.
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 reliable turn-on within defined tolerance band |
| VC @ IPPM | 77.4 V at 19.4 A (10/1000 µs) - Limits downstream voltage stress during surge events |
| PPPM | 1500 W - Sustains high-energy transients common in automotive load-dump scenarios |
| RθJA | ≤ 100 °C/W - Enables thermal management on standard 2 oz FR4 PCB without heatsink |
| Polarity | Unidirectional - Protects DC-biased lines such as 12 V supply rails or CAN bus terminations |
| MSL Level | Level 1 (260 °C peak) - Supports standard lead-free reflow without preconditioning |
Pinout & Package
Package: SMPC (TO-277A), 3-terminal surface-mount case with cathode band marking; 1.1 mm typical height, JEDEC-compliant footprint; terminals are matte tin-plated for solderability per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Primary anode connection | Connected to protected line (e.g., 12 V rail); forms one half of dual-anode structure for current sharing |
| Anode 2 | Secondary anode connection | Parallel anode path that lowers effective dynamic resistance during high-current surges |
| Cathode | Common cathode terminal | Connected to ground reference; cathode band denotes this terminal; enables unidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood applications including engine control modules and body electronics |
| Low-profile height (1.1 mm) | Enables placement beneath connectors or in tight stacking configurations without mechanical interference |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates without compromising surge robustness or thermal performance |
| Very fast response time | Sub-nanosecond turn-on ensures protection of sensitive IC inputs before damage threshold is exceeded |
| Low incremental surge resistance | Minimizes voltage overshoot during high di/dt events such as relay coil switching or motor commutation |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Suppresses load-dump transients induced by alternator regulation failure in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and ECU input stage to clamp spikes up to 120 V. Use Value: Prevents latch-up or gate oxide rupture in microcontrollers and power FETs by limiting clamped voltage to 77.4 V at 19.4 A. | Use Scenario: Shields analog output lines of pressure/temperature sensors from ESD and inductive coupling in factory automation PLCs. IC Role / Device Role / Timing Role: Mounted directly at sensor connector interface to absorb ±8 kV contact ESD per IEC 61000-4-2. Use Value: Maintains signal integrity with < 1 pF junction capacitance at zero bias, avoiding bandwidth degradation in 0–10 kHz sensor outputs. |
| Telecom Power Supply Input | Consumer Appliance Motor Drive Stage |
Use Scenario: Guards AC/DC front-end rectifier outputs against lightning-induced surges entering telecom base station power supplies. IC Role / Device Role / Timing Role: Placed after bulk capacitor to suppress differential-mode transients exceeding 1.5 kW energy. Use Value: Delivers 1500 W peak pulse power rating with 10/1000 µs waveform, meeting ITU-T K.20 immunity requirements. | Use Scenario: Protects half-bridge gate drivers in washing machine motor inverters from voltage spikes caused by brushless DC motor back-EMF. IC Role / Device Role / Timing Role: Connected across high-side and low-side FET source terminals to clamp shoot-through overvoltage. Use Value: Dual-anode architecture reduces effective clamping impedance, lowering peak voltage overshoot by ~12% vs. single-anode equivalents. |
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 | DO-214AC package; 70 V clamping at 17.1 A; lower PPPM (400 W); no AEC-Q101 qualification | Rated for industrial/commercial use only; not validated for automotive temperature cycling or vibration | Select when cost sensitivity outweighs automotive qualification and higher surge margin is unnecessary |
| 1.5KE48A | Through-hole DO-201AD package; 77 V clamping at 19.3 A; same PPPM (1500 W); larger footprint and manual assembly required | Used where board-level rework or legacy through-hole infrastructure remains in production | Choose only if automated SMT placement is unavailable or thermal pad access is restricted on bottom side |
Compared with SMAJ48A-E3/5A and 1.5KE48A, the SMPC48ANHM3/I provides AEC-Q101 qualification, 1.1 mm low-profile packaging for dense layouts, and dual-anode architecture for improved surge current sharing-making it optimal for new automotive and space-constrained industrial designs requiring high-reliability transient suppression.
Availability
SMPC48ANHM3/I is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom power input surge suppression requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SMPC48ANHM3/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 optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMPC series was developed to deliver high-power transient suppression in ultra-low-profile SMT packages for automotive and industrial applications demanding AEC-Q101 qualification and robust surge handling without sacrificing board space.
FAQ
What is the clamping voltage of SMPC48ANHM3/I at its rated peak pulse current?
The SMPC48ANHM3/I has a maximum clamping voltage (VC) of 77.4 V at 19.4 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMPC48ANHM3/I maintains this clamping performance across its full operating temperature range, ensuring consistent protection in automotive underhood environments.
Is SMPC48ANHM3/I suitable for automotive applications?
Yes, SMPC48ANHM3/I is AEC-Q101 qualified and specifically designated for automotive use, as indicated by the "HM3" suffix. It is rated for operation from −55 °C to +150 °C junction temperature and tested for mechanical robustness, thermal cycling, and humidity resistance per AEC-Q101 requirements. The SMPC48ANHM3/I is commonly deployed in engine control units, body control modules, and ADAS sensor interfaces where transient immunity is mission-critical.
What does the "I" suffix in SMPC48ANHM3/I indicate?
Per Vishay's ordering information, the "I" suffix in SMPC48ANHM3/I specifies the preferred package code for 13-inch diameter plastic tape and reel delivery, with a base quantity of 6500 units per reel. This format supports high-volume automated SMT placement and is compatible with industry-standard pick-and-place equipment. The SMPC48ANHM3/I shares identical electrical and thermal specifications with other SMPC48ANHM3 variants differing only in packaging and reel size.
How does the dual-anode structure of SMPC48ANHM3/I improve surge performance?
The SMPC48ANHM3/I features two anode terminals (Anode 1 and Anode 2) electrically parallel within the same die, reducing effective incremental surge resistance and distributing high-current pulses more evenly. This architecture lowers voltage overshoot during fast-rising transients and improves thermal distribution across the junction. Compared to single-anode TVS diodes, the dual-anode layout in SMPC48ANHM3/I delivers more stable clamping behavior at 19.4 A and extends surge lifetime under repetitive stress conditions.
Can SMPC48ANHM3/I be used in bidirectional configurations?
No, SMPC48ANHM3/I is strictly unidirectional and must be installed with correct polarity-the cathode band aligned toward the system ground reference. It is not rated for reverse-biased conduction and lacks symmetrical breakdown characteristics. For bidirectional protection, Vishay offers separate part numbers such as SMPC48CANHM3/I. Using SMPC48ANHM3/I in reverse orientation will result in premature failure or no clamping action, so proper orientation verification is essential during layout and assembly of SMPC48ANHM3/I.
SMPC48ANHM3/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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
SMPC48ANHM3/I FAQ
1.How can I place an order for SMPC48ANHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC48ANHM3/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 SMPC48ANHM3/I reliable?
The price and inventory of SMPC48ANHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC48ANHM3/I is usually 5 days.
3.What payment methods are accepted for SMPC48ANHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC48ANHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC48ANHM3/I?
SMPC48ANHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC48ANHM3/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 SMPC48ANHM3/I?
For technical support, including SMPC48ANHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC48ANHM3/I requirements.
6.How does Aetrix verify that SMPC48ANHM3/I is sourced from the original manufacturer or authorized distributors?
All SMPC48ANHM3/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 SMPC48ANHM3/I meets industry standards.
7.What is the process for return or replacement of SMPC48ANHM3/I?
All SMPC48ANHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMPC48ANHM3/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 SMPC48ANHM3/I part is unused and in its original packaging.
Return procedure for SMPC48ANHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC48ANHM3/I Tags
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