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Vishay General Semiconductor - Diodes Division SMPC48ANHM3/H
- Part No.:
- SMPC48ANHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC48ANHM3/H.pdf
- Description:
- TVS DIODE 48VWM 77.4VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:4,859
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Product details
Overview
SMPC48ANHM3/H 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 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 (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 μs waveform - suitable for protecting MOSFETs and sensor interfaces in automotive and industrial control systems.
For engineers reviewing the SMPC48ANHM3/H datasheet, SMPC48ANHM3/H pinout, SMPC48ANHM3/H application, or SMPC48ANHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, low-profile 1.1 mm height, MSL Level 1 rating, unidirectional polarity, and thermal resistance (RθJA = 100 °C/W) on FR4 PCB - all critical for high-reliability board-level surge protection design.
Technical Context
This device operates as a silicon avalanche diode optimized for fast response (<1 ns) to transient voltage spikes induced by inductive load switching or ESD events. Its unidirectional configuration enables integration into DC-biased power rails where reverse conduction must be blocked until clamping threshold is exceeded.
The SMPC48ANHM3/H uses a dual-anode/single-cathode topology within the SMPC (TO-277A) package, supporting heat-sinking via either anode terminal - enabling flexible PCB layout for thermal management. It meets JESD201 Class 2 whisker resistance and JEDEC J-STD-020 MSL Level 1 reflow compatibility up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48.0 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin for protected circuitry |
| VBR min/max | 53.3 V / 58.9 V at 1.0 mA - guaranteed avalanche onset range; ensures predictable turn-on across temperature and unit variation |
| VC @ IPPM | 77.4 V at 19.4 A (10/1000 μs) - clamped voltage seen by downstream ICs during surge; determines residual stress on protected components |
| PPPM | 1500 W - peak transient energy handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments and sealed industrial enclosures |
| RθJA | 100 °C/W - thermal resistance junction-to-ambient on standard FR4; informs derating requirements above 25 °C ambient |
| MSL Level | Level 1 per J-STD-020 - allows unlimited floor life and single reflow without baking; simplifies SMT manufacturing flow |
Pinout & Package
Package: SMPC (TO-277A), surface-mount, 3-terminal configuration with cathode band marking. Dimensions: 4.80 × 3.70 × 1.10 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Primary anode connection | Electrically tied to Anode 2 internally; used for PCB trace routing and optional heatsinking |
| Anode 2 | Secondary anode connection | Internally common with Anode 1; provides redundant thermal path and layout flexibility |
| Cathode | Clamping output node | Connected to protected line (e.g., 48 V rail); band-marked end denotes cathode polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensor interfaces requiring long-term reliability under thermal cycling and vibration |
| Low profile (1.1 mm height) | Enables use in space-constrained modules such as battery management systems and compact motor drives without compromising mechanical clearance |
| Unidirectional clamping | Blocks reverse leakage below VWM while providing precise forward-biased avalanche clamping - ideal for DC power rail protection |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates (IEC 61249-2-21) and supports lead-free assembly without material substitution risk |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving protection margin for sensitive gate drivers and analog front-ends |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 48 V auxiliary power distribution networks in electric vehicles against load dump and alternator surges. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input to clamp transients before they reach regulation circuitry. Use Value: Withstands 1500 W peak pulses and maintains clamping at ≤77.4 V, preventing overvoltage damage to buck controller ICs rated for 60 V absolute maximum. |
Use Scenario: Safeguarding analog outputs of pressure and temperature sensors in PLC I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: TVS connected across sensor supply and ground to shunt inductive kickback from solenoid actuation nearby. Use Value: Fast <1 ns response and low clamping voltage preserve signal integrity and prevent latch-up in precision op-amps and ADCs sharing the same supply domain. |
| Telecom DC Power Feeding | Motor Drive Gate Driver Protection |
|
Use Scenario: Securing -48 V telecom power feeds in remote radio units against lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS installed at power entry point to absorb differential-mode surges before reaching DC/DC isolation stages. Use Value: AEC-Q101 qualification and 150 °C TJ max ensure stable performance in uncooled outdoor enclosures subject to wide ambient swings. |
Use Scenario: Shielding high-side N-channel MOSFET gate drivers in BLDC inverters from Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: TVS placed between gate and source terminals to clamp dv/dt-induced overshoot exceeding driver's absolute maximum rating. Use Value: Dual-anode configuration allows direct mounting to copper pour for enhanced thermal dissipation during repetitive 10/1000 μs surge events. |
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) | DO-214AC package; lower PPPM (400 W); higher RθJA (150 °C/W); same VWM/VBR range | Limited to lower-energy transients; less suitable for automotive under-hood or high-reliability industrial deployments | Select when cost or legacy footprint compatibility outweighs surge robustness and thermal performance needs |
| 1.5KE48A (ON Semiconductor) | DO-201AD axial package; 1500 W PPPM; higher profile (5.2 mm height); no AEC-Q101 qualification | Requires through-hole assembly; unsuitable for automated SMT lines or space-constrained PCBs | Choose only for prototyping or non-automotive applications where reflow compatibility and miniaturization are not required |
Compared with SMAJ48A-E3/5A and 1.5KE48A, the SMPC48ANHM3/H delivers superior thermal performance (RθJA = 100 °C/W), AEC-Q101 qualification, and ultra-low 1.1 mm profile - making it the preferred choice for production-grade automotive and high-density industrial designs demanding repeatable surge immunity and SMT manufacturability.
Availability
SMPC48ANHM3/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC feeding applications requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMPC48ANHM3/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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific performance.
The SMPC series was developed to deliver high-power, low-profile transient protection for next-generation automotive and industrial systems - combining AEC-Q101 validation, halogen-free construction, and optimized thermal design in a JEDEC TO-277A footprint.
FAQ
What is the clamping voltage of SMPC48ANHM3/H at its rated peak pulse current?
The SMPC48ANHM3/H has a maximum clamping voltage (VC) of 77.4 V at 19.4 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured under defined test conditions per ANSI/IEEE C62.35 and represents the upper limit of voltage imposed on protected circuitry during surge events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
Is SMPC48ANHM3/H qualified for automotive applications?
Yes, SMPC48ANHM3/H is AEC-Q101 qualified, as confirmed by Vishay's documentation for the SMPC22AN through SMPC85AN family. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - validating its suitability for under-hood and chassis-mounted automotive electronics.
What does the "HM3" suffix indicate in SMPC48ANHM3/H?
The "HM3" suffix in SMPC48ANHM3/H denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification (H), and Vishay's standard industrial/commercial grade packaging (M3). The trailing "/H" specifies the 7-inch tape-and-reel packaging format with 1500 units per reel - distinct from "/I" (13-inch reel, 6500 units).
How does the dual-anode configuration of SMPC48ANHM3/H benefit thermal management?
The dual-anode structure in SMPC48ANHM3/H allows both anode terminals to serve as parallel thermal paths to PCB copper. When mounted on a large thermal pad, this configuration reduces effective junction-to-board thermal resistance - improving power derating capability and enabling sustained operation near TJ max in high-ambient environments like engine control units.
Can SMPC48ANHM3/H be used in bidirectional transient protection circuits?
No, SMPC48ANHM3/H is strictly unidirectional and must not be used in bidirectional configurations. Its electrical characteristics - including VBR, VC, and IR - are specified only for forward-biased avalanche operation. For bidirectional protection, Vishay offers separate SMPCxxCA variants; substituting SMPC48ANHM3/H would result in improper clamping behavior and potential device failure.
SMPC48ANHM3/H 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/H FAQ
1.How can I place an order for SMPC48ANHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC48ANHM3/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 SMPC48ANHM3/H reliable?
The price and inventory of SMPC48ANHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC48ANHM3/H is usually 5 days.
3.What payment methods are accepted for SMPC48ANHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC48ANHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC48ANHM3/H?
SMPC48ANHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC48ANHM3/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 SMPC48ANHM3/H?
For technical support, including SMPC48ANHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC48ANHM3/H requirements.
6.How does Aetrix verify that SMPC48ANHM3/H is sourced from the original manufacturer or authorized distributors?
All SMPC48ANHM3/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 SMPC48ANHM3/H meets industry standards.
7.What is the process for return or replacement of SMPC48ANHM3/H?
All SMPC48ANHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMPC48ANHM3/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 SMPC48ANHM3/H part is unused and in its original packaging.
Return procedure for SMPC48ANHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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