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Vishay General Semiconductor - Diodes Division SMBG48C-E3/5B
- Part No.:
- SMBG48C-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG48C-E3/5B.pdf
- Description:
- TVS DIODE 48VWM 85.5VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,402
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Product details
Overview
SMBG48C-E3/5B from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping voltage transients on signal or power lines. It features 48 V stand-off voltage (VWM), 53.3–58.9 V breakdown voltage (VBR) at 1 mA, 77.4 V maximum clamping voltage (VC) at 7.8 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface surge suppression.
For engineers reviewing the SMBG48C-E3/5B datasheet, SMBG48C-E3/5B pinout, SMBG48C-E3/5B application, or SMBG48C-E3/5B equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, 150 °C max junction temperature, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: during overvoltage events exceeding VWM = 48 V, it avalanches symmetrically in both directions to limit transient energy. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the DO-215AA package provides thermal resistance of RθJA = 100 °C/W and RθJL = 20 °C/W under standard mounting conditions.
The SMBG48C-E3/5B is rated for non-repetitive 10/1000 µs surges up to 7.8 A (IPPM) and meets UL 497B recognition (QVGQ2) for telecom and industrial protectors. It is RoHS-compliant (E3 suffix), JESD201 Class 1A whisker-tested, and qualified to AEC-Q101 - confirming suitability for automotive-grade reliability requirements without derating below -55 °C to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for protected line. |
| VBR (min/max) | 53.3 V / 58.9 V at 1 mA - guaranteed avalanche onset range; ensures consistent turn-on across production lots. |
| VC @ IPPM | 77.4 V at 7.8 A - clamped voltage during 600 W transient; determines worst-case stress on downstream ICs. |
| PPPM | 600 W - peak pulse power handling with 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 surge immunity. |
| TJ max | +150 °C - maximum junction temperature; enables operation in under-hood automotive or high-ambient industrial environments. |
| MSL Level | Level 1 per J-STD-020 - no floor life limitation; allows indefinite storage and standard reflow without baking. |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT. |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing leaded case with matte tin-plated terminals solderable per J-STD-002 and JESD22-B102. Bi-directional construction means no polarity marking; both terminals are electrically symmetrical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional transient conduction path | Both terminals serve identical roles; connects across protected line (e.g., CAN_H–CAN_L or RS-485 A–B) without orientation dependency. |
| Case / Body | Thermal and mechanical interface | Exposed copper pad area (0.2" × 0.2") required per terminal for thermal dissipation and mechanical anchoring per datasheet fig. 2. |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of differential or AC-coupled lines (e.g., CAN, RS-485, audio) without polarity concerns. |
| 600 W peak pulse power | Meets IEC 61000-4-5 surge immunity up to 4 kV (open-circuit) with proper PCB layout and trace inductance control. |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control modules, ADAS sensors, and body electronics. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD, inductive switch-off), improving system-level robustness. |
| MSL Level 1 & RoHS/E3 compliance | Supports lead-free reflow assembly without moisture-related defects and satisfies global environmental compliance mandates. |
Applications
| Automotive CAN Bus Protection | Industrial RS-485 Interface |
|---|---|
|
Use Scenario: Protecting CAN_H and CAN_L lines in vehicle ECUs against load dump, jump-start spikes, and ESD. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed differentially across bus pair to clamp common-mode and differential surges. Use Value: Maintains signal integrity by limiting clamped voltage to ≤77.4 V, preventing damage to CAN transceivers rated for ±40 V common-mode range. |
Use Scenario: Safeguarding RS-485 transceivers in factory automation PLCs exposed to motor drive noise and lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional voltage clamp installed between A/B lines and ground to absorb repetitive 10/1000 µs transients. Use Value: Enables reliable communication up to 10 Mbps by suppressing transients before they distort differential signaling or exceed transceiver absolute maximum ratings. |
| Consumer Sensor Signal Lines | Telecom Line Interface |
|
Use Scenario: Shielding analog outputs of MEMS pressure/temperature sensors in smart home devices from ESD and board-level coupling. IC Role / Device Role / Timing Role: Low-capacitance (typ. <50 pF at 0 V) bi-directional TVS placed at connector entry point. Use Value: Prevents sensor output saturation or latch-up during 8 kV contact ESD events while introducing negligible signal distortion due to symmetric clamping. |
Use Scenario: Protecting DSL or POTS line interface circuits in residential gateways from induced surges on telephone wiring. IC Role / Device Role / Timing Role: UL 497B-recognized protector applied across tip/ring pair to meet telecom safety and surge standards. Use Value: Provides certified surge suppression up to 600 W without requiring additional isolation transformers or gas discharge tubes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ48CA-E3/5B | Same VWM (48 V), but lower PPPM = 600 W (identical), higher VC = 79.4 V at 7.5 A; slightly larger DO-214AA (SMB) package. | Less optimized thermal performance (RθJA ≈ 110 °C/W); not AEC-Q101 qualified. | Select when AEC-Q101 is not required and existing SMB footprint is preferred. |
| 1.5KE48CA | Higher PPPM = 1500 W, axial-leaded DO-201AD package; VC = 77 V at 19.3 A; same VWM/VBR range. | Through-hole mounting only; unsuitable for high-density SMT designs or automotive vibration environments. | Choose for legacy through-hole systems needing higher surge margin where board space and mounting method allow. |
Compared with SMBJ48CA-E3/5B and 1.5KE48CA, the SMBG48C-E3/5B offers superior automotive qualification, tighter thermal resistance, and SMT compatibility - making it optimal for new automotive and industrial designs where reliability, miniaturization, and automated assembly are critical.
Availability
SMBG48C-E3/5B is available at Aetrix Electronics and suitable for automotive CAN bus protection, industrial RS-485 interface hardening, and consumer sensor signal line safeguarding requiring stable component supply and long-term lifecycle assurance.
Supply support for SMBG48C-E3/5B 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, precision, and application-specific optimization.
The SMBG series was developed for high-reliability surface-mount transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, low-profile packaging, and consistent clamping performance across temperature and lifetime.
FAQ
What is the polarity configuration of SMBG48C-E3/5B?
The SMBG48C-E3/5B is a bi-directional TVS diode with symmetrical terminals - no cathode band or polarity marking is present. Both leads function identically, enabling direct placement across differential or AC-coupled signal pairs like CAN_H/CAN_L or RS-485 A/B without orientation constraints. This eliminates assembly errors and simplifies layout for balanced line protection.
Does SMBG48C-E3/5B meet automotive qualification standards?
Yes, SMBG48C-E3/5B is AEC-Q101 qualified, having passed stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT). Its qualification confirms suitability for automotive applications such as engine control units, ADAS camera modules, and body control modules where long-term reliability under thermal and mechanical stress is mandatory.
What is the maximum clamping voltage of SMBG48C-E3/5B under surge conditions?
The SMBG48C-E3/5B has a maximum clamping voltage (VC) of 77.4 V at 7.8 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during standardized surge events - critical for ensuring downstream ICs remain within their absolute maximum ratings.
How does the DO-215AA (SMBG) package of SMBG48C-E3/5B compare thermally to standard SMB?
The DO-215AA (SMBG) package of SMBG48C-E3/5B delivers RθJA = 100 °C/W and RθJL = 20 °C/W under recommended 5.0 mm × 5.0 mm copper pad layout - outperforming standard DO-214AA (SMB) packages (RθJA ≈ 110–120 °C/W). This improved thermal efficiency supports higher sustained surge duty cycles and better reliability in compact, high-power-density layouts.
Is SMBG48C-E3/5B compatible with lead-free reflow processes?
Yes, SMBG48C-E3/5B is RoHS-compliant (E3 suffix) and rated for lead-free reflow with a maximum peak temperature of 260 °C per J-STD-020 MSL Level 1. Its matte tin-plated leads meet J-STD-002 and JESD22-B102 solderability requirements, and it passes JESD201 Class 1A whisker testing - ensuring robust interconnect integrity in modern high-volume SMT assembly lines.
SMBG48C-E3/5B 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 48V
- Voltage - Breakdown (Min):
- 53.3V
- Voltage - Clamping (Max) @ Ipp:
- 85.5V
- Current - Peak Pulse (10/1000µs):
- 7A
- Power - Peak Pulse:
- 600W
- 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:
- DO-214AA (SMBG)
SMBG48C-E3/5B FAQ
1.How can I place an order for SMBG48C-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG48C-E3/5B 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 SMBG48C-E3/5B reliable?
The price and inventory of SMBG48C-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG48C-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG48C-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG48C-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG48C-E3/5B?
SMBG48C-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG48C-E3/5B 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 SMBG48C-E3/5B?
For technical support, including SMBG48C-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG48C-E3/5B requirements.
6.How does Aetrix verify that SMBG48C-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG48C-E3/5B 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 SMBG48C-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG48C-E3/5B?
All SMBG48C-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG48C-E3/5B, 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 SMBG48C-E3/5B part is unused and in its original packaging.
Return procedure for SMBG48C-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG48C-E3/5B Tags
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