My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMPC48AN-M3/H
- Part No.:
- SMPC48AN-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC48AN-M3/H.pdf
- Description:
- TVS DIODE 48VWM 77.4VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:322
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMPC48AN-M3/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, and 1500 W peak pulse power (10/1000 µs). It is halogen-free, RoHS-compliant, and qualified to AEC-Q101 for automotive applications.
For engineers reviewing the SMPC48AN-M3/H datasheet, SMPC48AN-M3/H pinout, SMPC48AN-M3/H application, or SMPC48AN-M3/H equivalent, key selection criteria include clamping performance under 10/1000 µs surges, thermal resistance (RθJA ≤ 100 °C/W), unidirectional polarity with cathode band marking, and compatibility with automated SMT placement on FR4 PCBs with 2 oz copper.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging avalanche breakdown to limit transient voltages before they damage downstream ICs or MOSFETs. Its low incremental surge resistance and fast response time ensure effective suppression of inductive switching spikes and ESD events.
The SMPC48AN-M3/H is optimized for high-energy transients: it delivers 1500 W peak pulse power with a 10/1000 µs waveform, maintains stable clamping up to TJ = 150 °C, and meets J-STD-020 MSL Level 1 (260 °C reflow peak), enabling robust use in automotive and industrial environments where thermal cycling and surge reliability are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC bias margin for protected circuitry. |
| VBR (min/max) | 53.3 V / 58.9 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on threshold across production lot. |
| VC @ IPPM | 77.4 V at 19.4 A - Clamped voltage during 10/1000 µs surge; determines maximum stress imposed on downstream components. |
| PPPM | 1500 W - Peak pulse power handling capability; enables protection against high-energy transients like ISO 7637-2 Load Dump or IEC 61000-4-5 surges. |
| RθJA | ≤ 100 °C/W - Junction-to-ambient thermal resistance on standard FR4 PCB; supports sustained operation at TA = 25 °C with PD = 1.25 W. |
| Polarity | Unidirectional - Cathode-marked device; used where reverse-biased blocking is required (e.g., DC power rail protection). |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; suffix HM3 denotes qualification, but -M3/H is industrial-grade with same die. |
Pinout & Package
Package: SMPC (TO-277A), 3-terminal surface-mount case with matte tin-plated leads, 1.1 mm typical height, UL 94 V-0 molding compound, and cathode band marking on terminal 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (band end) | Cathode | Marked end; connects to protected line's positive side in unidirectional configuration; carries surge current into ground path. |
| Terminal 2 | Anode | Common anode node shared by both internal junctions; ties to system ground or low-impedance return path. |
| Terminal 3 | Cathode | Second cathode terminal; parallel-connected to Terminal 1 for enhanced current sharing and lower effective clamping impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.1 mm height) | Enables use in space-constrained automotive ECUs and portable industrial sensors without compromising board clearance or airflow. |
| Low incremental surge resistance | Reduces voltage overshoot during fast-rising transients, improving protection margin for 3.3 V or 5 V logic interfaces. |
| Meets MSL Level 1 (260 °C peak) | Supports single-pass lead-free reflow without popcorn cracking or delamination, eliminating pre-bake requirements in high-volume SMT lines. |
| Halogen-free & RoHS-compliant | Fulfills EU Directive 2011/65/EU and IPC-1752A material declarations; simplifies compliance reporting for Tier 1 automotive suppliers. |
| Two-cathode, single-anode topology | Provides symmetrical surge current distribution across dual cathodes, lowering effective dynamic impedance and enhancing clamping consistency. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed control modules (e.g., ADAS camera ECU) against load dump and jump-start transients per ISO 16750-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage to clamp surges above 48 V. Use Value: Limits clamped voltage to 77.4 V at 19.4 A, preventing damage to 60 V-rated input capacitors and gate drivers while maintaining <1.5 ns response. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in PLC I/O modules exposed to field wiring transients. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to suppress coupled noise from adjacent motor drives or solenoid switching. Use Value: With 1.0 µA max leakage at 48 V, it avoids loading precision 4–20 mA loops; 1500 W rating handles repetitive 1 kV/500 A surges per IEC 61000-4-5. |
| Telecom DC Power Feeds | Consumer USB-C Power Delivery Lines |
Use Scenario: Securing -48 V telecom rectifier outputs feeding base station RF amplifiers against lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at rectifier output to clamp negative-going transients on the return path. Use Value: Dual-cathode layout reduces effective clamping impedance by ~15% vs. single-cathode equivalents, improving protection margin for GaN FETs with tight VDSO limits. | Use Scenario: Protecting USB-C CC and VBUS lines in portable docking stations during hot-plug events and ESD contact discharge. IC Role / Device Role / Timing Role: TVS placed on VBUS line upstream of buck converter to absorb 10/1000 µs surges from faulty chargers or cable insertion arcs. Use Value: 48 V VWM aligns with USB PD 3.0 48 V PPS profiles; 77.4 V VC ensures downstream 60 V-rated load switches remain within SOA during worst-case surge. |
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 (SMA) package; 1500 W PPPM; 48 V VWM; 77.4 V VC; unidirectional; same die family but different package thermal path. | Higher RθJA (~140 °C/W); less suitable for high-density automotive PCBs with limited copper area. | Select SMAJ48A-E3/5A only when legacy SMA footprint is fixed and thermal derating can be accommodated. |
| 1.5KE48A (Littelfuse) | DO-201AD axial package; 1500 W PPPM; 48 V VWM; 77.0 V VC; unidirectional; through-hole mounting. | Not SMT-compatible; incompatible with automated assembly; requires manual soldering or wave soldering. | Choose 1.5KE48A only for prototyping, low-volume repair, or legacy through-hole designs where rework is acceptable. |
Compared with SMAJ48A-E3/5A and 1.5KE48A, the SMPC48AN-M3/H offers superior thermal performance (RθJA ≤ 100 °C/W) and SMT process compatibility in a low-profile 3-terminal package, making it optimal for high-reliability automotive and industrial power rail protection where board space and reflow yield are critical.
Availability
SMPC48AN-M3/H is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom DC feed protection requiring stable component supply, consistent AEC-Q101-aligned quality, and full traceability.
Supply support for SMPC48AN-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, 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 surface-mount packages for automotive and industrial systems where thermal management and automated assembly are essential design constraints.
FAQ
What is the clamping voltage of SMPC48AN-M3/H at its rated peak pulse current?
The SMPC48AN-M3/H has a maximum clamping voltage (VC) of 77.4 V at 19.4 A peak pulse current (IPPM) under a 10/1000 µs waveform. This value is measured with the cathode terminals on heatsink per the datasheet test condition and defines the upper voltage limit imposed on protected circuitry during surge events. The SMPC48AN-M3/H maintains this clamping performance across its specified junction temperature range of -55 °C to +150 °C.
Is SMPC48AN-M3/H qualified to AEC-Q101?
No - SMPC48AN-M3/H is the industrial-grade version with halogen-free, RoHS-compliant construction and M3 suffix. AEC-Q101 qualification applies only to parts with the HM3 suffix (e.g., SMPC48ANHM3/H). While the SMPC48AN-M3/H uses the same die and package as the qualified variant, it has not undergone the full AEC-Q101 stress test suite. For automotive production, specify SMPC48ANHM3/H instead of SMPC48AN-M3/H.
How does the dual-cathode configuration of SMPC48AN-M3/H improve surge handling?
The SMPC48AN-M3/H integrates two cathode terminals (Terminals 1 and 3) bonded to a common anode (Terminal 2), enabling parallel current sharing during transients. This reduces effective dynamic impedance by distributing surge current across two low-inductance paths, resulting in tighter clamping voltage regulation and improved energy absorption consistency compared to single-cathode TVS devices. The SMPC48AN-M3/H leverages this architecture to sustain 1500 W peak pulse power without thermal runaway.
What is the recommended PCB footprint for SMPC48AN-M3/H?
The recommended mounting pad layout for SMPC48AN-M3/H follows JEDEC TO-277A standards: 0.268" × 0.186" (6.80 mm × 4.72 mm) overall pad area, with minimum conductor widths of 0.050" (1.27 mm) and spacing of 0.041" (1.04 mm) between pads. Use 2 oz copper and thermal vias under the anode pad to achieve the rated RθJA ≤ 100 °C/W. The SMPC48AN-M3/H datasheet specifies exact dimensions in inches and millimeters on page 5.
Can SMPC48AN-M3/H be used in bidirectional configurations?
No - SMPC48AN-M3/H is strictly unidirectional, with polarity indicated by the cathode band on Terminal 1. It conducts only when the cathode is more positive than the anode. For bidirectional transient suppression (e.g., AC line or data bus protection), a separate bidirectional TVS such as SMBJ48CA or a back-to-back SMPC48AN-M3/H pair would be required. The SMPC48AN-M3/H datasheet explicitly states "Unidirection" in the FEATURES section and confirms polarity in the MECHANICAL DATA.
SMPC48AN-M3/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:
- 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/H FAQ
1.How can I place an order for SMPC48AN-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC48AN-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 SMPC48AN-M3/H reliable?
The price and inventory of SMPC48AN-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 SMPC48AN-M3/H is usually 5 days.
3.What payment methods are accepted for SMPC48AN-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC48AN-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC48AN-M3/H?
SMPC48AN-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC48AN-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 SMPC48AN-M3/H?
For technical support, including SMPC48AN-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC48AN-M3/H requirements.
6.How does Aetrix verify that SMPC48AN-M3/H is sourced from the original manufacturer or authorized distributors?
All SMPC48AN-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 SMPC48AN-M3/H meets industry standards.
7.What is the process for return or replacement of SMPC48AN-M3/H?
All SMPC48AN-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMPC48AN-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 SMPC48AN-M3/H part is unused and in its original packaging.
Return procedure for SMPC48AN-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC48AN-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 …
