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Vishay General Semiconductor - Diodes Division SMBG48CA-E3/52
- Part No.:
- SMBG48CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG48CA-E3/52.pdf
- Description:
- TVS DIODE 48VWM 77.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,460
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Product details
Overview
SMBG48CA-E3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) 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, 600 W peak pulse power (10/1000 μs), <1.0 μA reverse leakage at VWM, and 7.8 A peak pulse current (IPPM), deployed in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the SMBG48CA-E3/52 datasheet, SMBG48CA-E3/52 pinout, SMBG48CA-E3/52 application, or SMBG48CA-E3/52 equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C junction temperature rating, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped bidirectional protector, leveraging an avalanche breakdown mechanism to limit transient overvoltages across protected lines without polarity sensitivity. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and fast response time (<1 ns), while the low Rsurge enables effective energy diversion during 10/1000 μs surges.
Designed for ungrounded or floating differential lines, SMBG48CA-E3/52 delivers symmetrical clamping in both directions - critical for CAN, LIN, RS-485, and analog sensor inputs where common-mode transients dominate. It meets MSL Level 1 per J-STD-020 and supports reflow up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 48 V - Maximum continuous reverse working voltage before clamping initiates; defines safe operating margin for 42 V nominal systems. |
| VBR (min/max) | 53.3 V / 58.9 V at 1 mA - Confirmed breakdown range ensures reliable turn-on within 11% tolerance under standardized test conditions. |
| VC @ IPPM | 77.4 V - Clamped voltage at 7.8 A peak pulse current; determines maximum stress imposed on downstream ICs during surge events. |
| IPPM | 7.8 A - Peak surge current handling capacity with 10/1000 μs waveform; directly correlates to IEC 61000-4-5 Level 3 immunity (1 Ω source impedance). |
| PPPM | 600 W - Peak pulse power dissipation capability; enables robust protection against repetitive transients at 0.01 % duty cycle. |
| TJ max | +150 °C - Maximum junction temperature rating; supports operation in under-hood automotive environments and sealed industrial enclosures. |
| Leakage @ VWM | <1.0 μA - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss in high-impedance sensor circuits. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking; case dimensions 4.57 mm × 3.94 mm × 2.10 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry (direction-agnostic) | One terminal of symmetrical avalanche junction; accepts surge current from either polarity relative to cathode. |
| Cathode | Transient current exit (direction-agnostic) | Second terminal of symmetrical junction; completes low-impedance path to ground or return during clamping event. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces per stress test requirements. |
| Glass passivated junction | Ensures long-term VBR stability and reduced parameter drift over temperature and lifetime vs. epoxy-passivated alternatives. |
| 600 W peak pulse power (10/1000 μs) | Provides immunity against ISO 7637-2 Pulse 1, 2a, 3a/b and IEC 61000-4-5 combination wave surges in 12 V/24 V systems. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture-related popcorning; eliminates pre-bake requirement for production lines. |
| Low profile SMBG package | Reduces board space by 30 % vs. SMA; compatible with high-density routing and automated optical inspection (AOI) systems. |
Applications
| Automotive Sensor Protection | Industrial Analog I/O Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and pressure/temperature sensors in engine compartments exposed to load dump and inductive switching noise. IC Role / Device Role / Timing Role: Bidirectional clamping element placed between signal line and chassis ground to shunt ESD and surge energy away from sensitive analog front-ends. Use Value: Maintains signal fidelity below 77.4 V clamp level during 10/1000 μs transients, preserving ADC accuracy and preventing latch-up in microcontrollers. | Use Scenario: Safeguarding 4–20 mA current loop inputs on PLC analog input modules subjected to field wiring surges and lightning-induced coupling. IC Role / Device Role / Timing Role: Primary overvoltage limiter on differential input terminals, operating symmetrically to handle common-mode transients without polarity biasing. Use Value: Enables compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (Surge) Level 3 without additional series impedance or filtering complexity. |
| RS-485 Transceiver Protection | Automotive Body Control Module (BCM) |
Use Scenario: Shielding half-duplex RS-485 transceivers (e.g., SN65HVD230) in factory automation networks from cable discharge events and ground potential differences. IC Role / Device Role / Timing Role: Line-to-line and line-to-ground TVS pair mounted at connector interface to absorb ±15 kV ESD (IEC 61000-4-2) and 1 kV surge pulses. Use Value: Prevents permanent damage to transceiver ESD structures while maintaining <10 pF junction capacitance to avoid signal edge degradation at 10 Mbps. | Use Scenario: Securing door module communication lines (CAN/LIN) and LED driver outputs against battery reverse connection and jump-start transients in 12 V vehicle architectures. IC Role / Device Role / Timing Role: Secondary-level protection device placed after primary fusing, clamping transients before they reach ASIC power rails or GPIO pins. Use Value: Supports AEC-Q101 qualification and 150 °C ambient operation required for BCM mounting near interior lighting assemblies and HVAC ducts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ48CA-E3/52 | Same VWM (48 V) and VBR range, but lower PPPM = 600 W (same rating), higher IPPM = 11.7 A; SMB (DO-214AA) package, 0.25 mm thicker. | Less suitable for ultra-thin PCBs due to 2.6 mm height vs. SMBG's 2.1 mm; identical thermal derating curve but higher RθJA (125 °C/W). | Select SMBJ48CA-E3/52 only when legacy layout uses SMB footprint or when higher surge margin is prioritized over board height. |
| 1.5KE48CA | Higher PPPM = 1500 W, larger DO-201AD package, VBR = 53.3–58.9 V, but not AEC-Q101 qualified and MSL Level 2. | Not suitable for automotive SMT production; requires through-hole assembly and pre-bake; intended for industrial power supply inputs rather than signal-level protection. | Choose 1.5KE48CA only for non-automotive, high-energy AC/DC front-end protection where board space and reflow compatibility are secondary. |
Compared with SMBJ48CA-E3/52 and 1.5KE48CA, SMBG48CA-E3/52 uniquely balances AEC-Q101 qualification, low-profile SMBG packaging, and precise 48 V clamping for signal-line protection - making it optimal for space-constrained, automotive-grade designs requiring zero rework risk in reflow processes.
Availability
SMBG48CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial analog I/O modules, RS-485 communication ports, and body control unit protection requiring stable component supply and full traceability.
Supply support for SMBG48CA-E3/52 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, automotive qualification, and high-volume manufacturability.
SMBG48CA-E3/52 belongs to Vishay's TRANSZORB® TVS family, engineered specifically for high-speed, bidirectional transient suppression in automotive, industrial, and telecom signal-path applications where low capacitance and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMBG48CA-E3/52 at its rated peak pulse current?
The SMBG48CA-E3/52 has a maximum clamping voltage (VC) of 77.4 V at its rated peak pulse current (IPPM) of 7.8 A, measured using a 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is critical for ensuring downstream ICs remain within absolute maximum ratings. The SMBG48CA-E3/52 achieves this clamping performance while maintaining low incremental surge resistance for efficient energy diversion.
Is SMBG48CA-E3/52 suitable for automotive applications?
Yes, SMBG48CA-E3/52 is AEC-Q101 qualified and rated for operation from –55 °C to +150 °C, making it suitable for under-hood and cabin-mounted automotive electronics. It is commonly used in LIN bus nodes, sensor signal conditioning, and BCM submodules where bidirectional transient suppression and reflow compatibility are required. The SMBG48CA-E3/52 meets MSL Level 1 and supports peak reflow temperatures up to 260 °C without preconditioning.
How does the SMBG48CA-E3/52 differ from unidirectional variants like SMBG48A-E3/52?
The SMBG48CA-E3/52 is bidirectional, meaning it provides symmetrical clamping for voltage transients of either polarity across its terminals, with no cathode band marking. In contrast, SMBG48A-E3/52 is unidirectional, featuring a cathode band and conducting only in reverse bias - requiring correct orientation during placement. Both share identical VWM (48 V) and VBR (53.3–58.9 V), but SMBG48A-E3/52 supports 100 A IFSM and has forward voltage drop specifications absent in the CA version.
What is the junction capacitance of SMBG48CA-E3/52 and why does it matter?
The SMBG48CA-E3/52 exhibits typical junction capacitance of <10 pF at zero bias and VWM, as confirmed in Vishay's characterization curves. This low capacitance is essential for protecting high-speed data lines (e.g., RS-485, CAN FD) without distorting signal edges or attenuating bandwidth. Unlike higher-capacitance TVS devices, the SMBG48CA-E3/52 avoids compromising rise/fall times or introducing jitter in digital communication paths.
Can SMBG48CA-E3/52 be used in place of SMBJ48CA-E3/52 without layout changes?
No - SMBG48CA-E3/52 uses the SMBG (DO-215AA) package, while SMBJ48CA-E3/52 uses SMB (DO-214AA); their footprints are mechanically incompatible due to differing lead spacing (2.29 mm vs. 2.54 mm) and body width (3.94 mm vs. 4.57 mm). Although both offer 48 V bidirectional clamping, substituting SMBG48CA-E3/52 for SMBJ48CA-E3/52 requires PCB redesign. The SMBG48CA-E3/52 is not a drop-in replacement.
SMBG48CA-E3/52 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:
- -
- Bidirectional Channels:
- 1
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG48CA-E3/52 FAQ
1.How can I place an order for SMBG48CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG48CA-E3/52 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 SMBG48CA-E3/52 reliable?
The price and inventory of SMBG48CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG48CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG48CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG48CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG48CA-E3/52?
SMBG48CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG48CA-E3/52 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 SMBG48CA-E3/52?
For technical support, including SMBG48CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG48CA-E3/52 requirements.
6.How does Aetrix verify that SMBG48CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG48CA-E3/52 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 SMBG48CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG48CA-E3/52?
All SMBG48CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG48CA-E3/52, 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 SMBG48CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBG48CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG48CA-E3/52 Tags
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