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Vishay General Semiconductor - Diodes Division SMBG48AHE3/52
- Part No.:
- SMBG48AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG48AHE3/52.pdf
- Description:
- TVS DIODE 48VWM 77.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,603
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Product details
Overview
SMBG48AHE3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of sensitive electronics. It features 48 V stand-off voltage (VWM), 53.3–58.9 V breakdown voltage (VBR) at 1 mA, 7.8 A peak pulse current (IPPM) under 10/1000 μs waveform, and clamps to ≤77.4 V at rated surge, meeting AEC-Q101 qualification for automotive use.
For engineers reviewing the SMBG48AHE3/52 datasheet, SMBG48AHE3/52 pinout, SMBG48AHE3/52 application, or SMBG48AHE3/52 equivalent, key selection criteria include its 600 W peak pulse power rating, low 1.0 μA max reverse leakage at VWM, 150 °C max junction temperature, and RoHS-compliant, AEC-Q101-qualified construction for high-reliability industrial and automotive circuits.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, optimized for fast response to ESD and lightning-induced transients. Its glass-passivated junction ensures stable breakdown behavior, while the low incremental surge resistance enables effective voltage limiting during 10/1000 μs surges up to 600 W.
The SMBG48AHE3/52 is rated for repetitive surge duty cycle ≤0.01 % and derated above 25 °C ambient per thermal curves. With RθJA = 100 °C/W and RθJL = 20 °C/W, it supports reliable operation on standard 5.0 mm × 5.0 mm copper pads, and meets MSL Level 1 per J-STD-020 at 260 °C peak reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 53.3 V / 58.9 V at IT = 1 mA - Confirmed breakdown range ensuring predictable turn-on threshold |
| IPPM | 7.8 A - Peak surge current capability under standardized 10/1000 μs waveform |
| VC | ≤77.4 V - Clamped voltage at IPPM, defining maximum stress imposed on protected circuitry |
| PPPM | 600 W - Peak pulse power handling capacity, critical for transient energy absorption |
| ID (max) | 1.0 μA - Reverse leakage at VWM, minimizing standby power loss and signal distortion |
| TJ (max) | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band; anode and cathode terminals are non-reversible for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts during overvoltage to shunt surge current to ground |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter consistency across life cycle |
| 600 W peak pulse power (10/1000 μs) | Supports robust protection against ISO 7637-2 Pulse 1/2a/3a and IEC 61000-4-5 surge events |
| MSL Level 1, 260 °C peak reflow | Enables compatibility with standard lead-free SMT assembly without moisture sensitivity concerns |
| RoHS compliant, HE3 suffix | Meets industrial and automotive environmental compliance requirements with AEC-Q101 traceability |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs and body control modules from load dump and inductive switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges before they reach downstream regulators and microcontrollers. Use Value: Limits transient voltage to ≤77.4 V, safeguarding 3.3 V/5 V logic interfaces and analog front-ends with minimal leakage (<1.0 μA) at nominal 48 V supply. | Use Scenario: Shielding RS-485/RS-422 transceivers and analog sensor outputs (e.g., pressure, temperature) in factory automation systems. IC Role / Device Role / Timing Role: Bidirectional-capable variant not applicable; SMBG48AHE3/52 used on single-ended supply rails feeding isolated sensor signal conditioners. Use Value: Fast clamping response preserves signal integrity during ESD events (IEC 61000-4-2 ±8 kV contact), with low capacitance supporting >1 MHz signal bandwidth. |
| Telecom DC Power Input Protection | Consumer Power Adapter Output Protection |
Use Scenario: Securing 48 V PoE-powered equipment inputs against surges induced by cable coupling or hot-plug transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on the DC input stage upstream of DC/DC converters and PMICs. Use Value: 600 W surge rating handles repeated 10/1000 μs transients per IEEE 802.3bt, while 150 °C TJ rating sustains performance in enclosed telecom enclosures. | Use Scenario: Adding secondary surge protection on the 48 V output rail of GaN-based USB-PD 3.1 extenders and laptop adapters. IC Role / Device Role / Timing Role: Final-stage TVS after primary isolation, guarding against output-side fault conditions and external coupling. Use Value: Low 1.0 μA leakage avoids efficiency degradation at light loads; SMBG package allows automated placement without compromising creepage/clearance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG48AHM3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and AEC-Q101 qualification | Required where halogen-free material compliance is mandated (e.g., certain EU industrial standards) | Select SMBG48AHM3/52 when halogen-free bill-of-materials is specified; otherwise SMBG48AHE3/52 satisfies general RoHS and automotive requirements. |
| SMBJ48A-E3/52 | Same VWM/VBR/VC ratings but in larger SMB (DO-214AA) package; 6.5 A IPPM, 100 °C/W RθJA | Lower surge current rating and higher thermal resistance limit use in high-power or thermally constrained layouts | Choose SMBG48AHE3/52 for space-constrained designs requiring superior power density and lower thermal impedance than SMBJ48A-E3/52. |
Compared with SMBG48AHM3/52, SMBG48AHE3/52 offers identical protection performance with standard RoHS compliance; versus SMBJ48A-E3/52, it delivers 20 % higher IPPM and 20 °C/W lower RθJA in a smaller footprint-critical for compact, high-reliability 48 V systems.
Availability
SMBG48AHE3/52 is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer 48 V adapter designs requiring stable component supply, AEC-Q101 validation, and consistent surge immunity performance.
Supply support for SMBG48AHE3/52 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, efficiency, and application-specific optimization.
The SMBG series was developed for high-density, high-surge surface-mount transient protection in automotive and industrial environments, prioritizing AEC-Q101 qualification, low-profile packaging, and repeatable clamping performance under real-world surge stress.
FAQ
What is the breakdown voltage range of SMBG48AHE3/52?
The SMBG48AHE3/52 has a guaranteed breakdown voltage (VBR) range of 53.3 V to 58.9 V at test current IT = 1 mA, measured per ANSI/IEEE C62.35. This range ensures consistent clamping onset across production lots and supports design margining for 48 V nominal systems where transient thresholds must exceed steady-state rail voltage.
Is SMBG48AHE3/52 suitable for automotive applications?
Yes, SMBG48AHE3/52 is AEC-Q101 qualified and specifically designed for automotive use, including engine control units, body electronics, and ADAS power domains. Its 150 °C maximum junction temperature, MSL Level 1 reflow rating, and glass-passivated junction meet stringent automotive reliability requirements for under-hood and chassis-mounted systems.
What does the "HE3" suffix indicate in SMBG48AHE3/52?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and industrial-grade reliability. It distinguishes this variant from base "E3" (RoHS only) and "HM3" (halogen-free + AEC-Q101) versions. The HE3 marking confirms full compliance with automotive qualification testing and environmental directives without halogen restrictions.
How is SMBG48AHE3/52 mounted and what are its thermal characteristics?
SMBG48AHE3/52 uses surface-mount SMBG (DO-215AA) packaging with matte tin-plated leads. When mounted on 5.0 mm × 5.0 mm copper pads per datasheet recommendation, it achieves RθJA = 100 °C/W and RθJL = 20 °C/W, enabling efficient heat dissipation during repetitive surge events and sustained operation up to +150 °C junction temperature.
Does SMBG48AHE3/52 have bidirectional capability?
No, SMBG48AHE3/52 is a unidirectional TVS diode, identified by the "A" suffix and cathode band marking. Bidirectional variants use the "CA" suffix (e.g., SMBG48CA). Its unidirectional configuration provides optimal clamping on positive-going transients relative to ground, making it ideal for DC power rail protection where polarity is fixed.
SMBG48AHE3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB Gull Wing
- 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):
- 7.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG48AHE3/52 FAQ
1.How can I place an order for SMBG48AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG48AHE3/52 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 SMBG48AHE3/52 reliable?
The price and inventory of SMBG48AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG48AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG48AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG48AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG48AHE3/52?
SMBG48AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG48AHE3/52 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 SMBG48AHE3/52?
For technical support, including SMBG48AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG48AHE3/52 requirements.
6.How does Aetrix verify that SMBG48AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG48AHE3/52 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 SMBG48AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG48AHE3/52?
All SMBG48AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG48AHE3/52, 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 SMBG48AHE3/52 part is unused and in its original packaging.
Return procedure for SMBG48AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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