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Vishay General Semiconductor - Diodes Division SMBG48CHE3/5B
- Part No.:
- SMBG48CHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG48CHE3/5B.pdf
- Description:
- TVS DIODE 48VWM 85.5VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,984
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Product details
Overview
SMBG48CHE3/5B from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping ESD and surge transients on signal/power lines. It features 48 V stand-off voltage (VWM), 53.3–58.9 V breakdown voltage (VBR), 77.4 V maximum clamping voltage (VC) at 7.8 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 µs). Used in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMBG48CHE3/5B datasheet, SMBG48CHE3/5B pinout, SMBG48CHE3/5B application, or SMBG48CHE3/5B equivalent, key selection criteria include bi-directional clamping capability, AEC-Q101 qualification, RoHS-compliant HE3 termination, 150 °C junction rating, 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: under normal conditions it presents high impedance (>1 µA leakage at 48 V), then rapidly avalanches to limit transient overvoltage across protected circuit nodes. Its glass-passivated junction ensures stable VBR tolerance and low dynamic resistance during 10/1000 µs surges.
Designed for bi-directional operation, SMBG48CHE3/5B has no polarity marking and symmetric clamping in both directions - critical for AC-coupled or differential signal lines like CAN FD or RS-485. Thermal resistance is 20 °C/W junction-to-lead, enabling reliable power dissipation when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 48 V nominal systems. |
| VBR (min/max) | 53.3 V / 58.9 V - Breakdown occurs within this range at 1 mA test current; ensures consistent turn-on across production lots. |
| VC @ IPPM | 77.4 V at 7.8 A - Clamped voltage during 10/1000 µs surge; limits stress on downstream ICs such as microcontrollers or transceivers. |
| PPPM | 600 W - Peak pulse power handling per 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 (4 kV) surge testing. |
| TJ max | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments and industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness per JESD22 standards. |
| Package | DO-215AA (SMBG) - Surface-mount gull-wing package with 2.10 mm lead pitch; compatible with IPC-7351B footprint and reflow profiles up to 260 °C peak. |
Pinout & Package
DO-215AA (SMBG) is a bi-directional surface-mount package with two terminals and no polarity marking. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (unmarked) | Bi-directional surge path | Either terminal serves as input/output for transient energy; symmetrical IV curve eliminates orientation constraints during placement. |
| Case (exposed metal) | Thermal conduction path | Not electrically connected; provides mechanical stability and aids heat transfer to PCB copper when mounted per recommended 5.0 mm × 5.0 mm pad layout. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 surges up to 4 kV without cascaded TVS stages. |
| AEC-Q101 qualified | Validated for automotive applications including engine control units, ADAS sensors, and body electronics requiring long-term field reliability. |
| Glass passivated junction | Ensures stable VBR over temperature and lifetime, with <±5% variation across -55 °C to +150 °C operating range. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow without moisture sensitivity concerns; no baking required prior to assembly. |
| RoHS-compliant HE3 termination | Meets JESD 201 class 2 whisker resistance; suitable for high-reliability industrial and medical-grade assemblies. |
Applications
| Automotive Sensor Interface | Industrial Digital I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus or analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt clamping element placed between signal line and ground, responding in <1 ns to limit voltage excursions. Use Value: Maintains signal integrity below 77.4 V during 100 A surge events, preventing latch-up or damage to 5 V/12 V sensor interface ICs. |
Use Scenario: Safeguarding PLC digital input channels exposed to relay coil flyback and motor drive noise in factory automation. IC Role / Device Role / Timing Role: Bidirectional voltage clamp on dry-contact or opto-isolated inputs, absorbing repetitive 600 W transients. Use Value: Eliminates need for external series resistors or RC snubbers due to low incremental surge resistance (<10 Ω typical). |
| Telecom Line Interface | Consumer USB Port ESD Protection |
Use Scenario: Shielding RS-485 transceiver pins in base station backhaul modules from lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Bi-directional transient suppressor bridging differential pair (A/B) to ground, preserving common-mode rejection. Use Value: Symmetric clamping ensures balanced voltage limiting on both lines, avoiding data corruption during 10/1000 µs transients. |
Use Scenario: Adding secondary-level surge immunity to USB 2.0 data lines (D+/D−) in smart home hubs subjected to user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance (<100 pF) shunt device placed adjacent to connector, diverting >8 kV HBM ESD pulses. Use Value: Clamps transients below 77.4 V while adding <0.5 pF parasitic capacitance per line - no signal integrity impact at 480 Mbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ48CA-E3/5B | Same VWM (48 V), but lower PPPM (400 W); higher VC (83.3 V at 5.2 A); non-AEC-Q101 rated. | Restricted to commercial-grade consumer or computing applications; not validated for automotive thermal cycling or humidity exposure. | Select SMBJ48CA-E3/5B only if cost is primary constraint and AEC-Q101 compliance is unnecessary. |
| SMCJ48CAHE3/5B | Same VWM and AEC-Q101 rating, but larger DO-214AB (SMC) package; higher PPPM (1500 W); VC = 77.4 V at 19.9 A. | Requires larger PCB footprint and higher thermal mass; suited for higher-energy surges where SMBG48CHE3/5B may reach thermal limit. | Choose SMCJ48CAHE3/5B when system-level surge testing exceeds IEC 61000-4-5 Level 4 or repeated surge duty cycle exceeds 0.01%. |
Compared with SMBJ48CA-E3/5B and SMCJ48CAHE3/5B, SMBG48CHE3/5B delivers optimal balance of AEC-Q101 reliability, compact SMBG footprint, and 600 W surge capacity - making it the preferred choice for space-constrained automotive and industrial modules requiring certified robustness.
Availability
SMBG48CHE3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O hardening, and telecom line interface applications requiring stable component supply and long-term lifecycle support.
Supply support for SMBG48CHE3/5B 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, efficiency, and application-specific optimization.
The SMBG series was developed for high-reliability surface-mount surge protection in automotive and industrial environments, prioritizing AEC-Q101 qualification, tight VBR tolerance, and robust thermal performance in compact packages.
FAQ
What is the clamping voltage of SMBG48CHE3/5B at its rated peak pulse current?
The SMBG48CHE3/5B has a maximum clamping voltage (VC) of 77.4 V at 7.8 A peak pulse current (IPPM), measured under the standard 10/1000 µs waveform. This value ensures protected circuits remain below critical voltage thresholds during surge events, and is confirmed in the Vishay datasheet Document Number 88456, Table on page 2.
Is SMBG48CHE3/5B suitable for automotive applications?
Yes, SMBG48CHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and chassis-mounted modules. Its 150 °C maximum junction temperature, MSL Level 1 rating, and validation across temperature cycling, HTRB, and ESD tests make it appropriate for ECUs, ADAS sensors, and body control units.
What does the "HE3" suffix indicate in SMBG48CHE3/5B?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and JESD 201 class 2 whisker resistance. It distinguishes SMBG48CHE3/5B from commercial-grade "E3" variants and confirms compliance with automotive reliability and plating standards per Vishay's ordering nomenclature in Document 88456.
How does SMBG48CHE3/5B differ from uni-directional SMBG48A variants?
SMBG48CHE3/5B is bi-directional with no cathode band marking and symmetric clamping in both polarities, whereas SMBG48A is uni-directional with a cathode band and only clamps in reverse bias. The bi-directional version is required for AC signals, differential buses, or ungrounded systems where polarity cannot be guaranteed.
What PCB pad layout is recommended for optimal thermal performance of SMBG48CHE3/5B?
Vishay specifies mounting SMBG48CHE3/5B on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated 600 W pulse power. Smaller pads reduce thermal dissipation and derate peak power; the DO-215AA outline drawing on page 4 of Document 88456 provides exact dimensions and spacing guidance.
SMBG48CHE3/5B 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG48CHE3/5B FAQ
1.How can I place an order for SMBG48CHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG48CHE3/5B 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 SMBG48CHE3/5B reliable?
The price and inventory of SMBG48CHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG48CHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG48CHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG48CHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG48CHE3/5B?
SMBG48CHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG48CHE3/5B 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 SMBG48CHE3/5B?
For technical support, including SMBG48CHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG48CHE3/5B requirements.
6.How does Aetrix verify that SMBG48CHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG48CHE3/5B 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 SMBG48CHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG48CHE3/5B?
All SMBG48CHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG48CHE3/5B, 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 SMBG48CHE3/5B part is unused and in its original packaging.
Return procedure for SMBG48CHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG48CHE3/5B Tags
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