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Vishay General Semiconductor - Diodes Division SMBG48CAHE3/52
- Part No.:
- SMBG48CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG48CAHE3/52.pdf
- Description:
- TVS DIODE 48VWM 77.4VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,778
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Product details
Overview
SMBG48CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) 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) at 1 mA, 600 W peak pulse power (10/1000 μs), <12.5 ns response time, and AEC-Q101 qualification - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMBG48CAHE3/52 datasheet, SMBG48CAHE3/52 pinout, SMBG48CAHE3/52 application, or SMBG48CAHE3/52 equivalent, key selection criteria include bidirectional clamping capability, 77.4 V maximum clamping voltage at 7.8 A IPPM, RoHS-compliant AEC-Q101 qualification, 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), but triggers into low-impedance conduction when transient voltage exceeds VBR, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
The SMBG48CAHE3/52 is rated for -55 °C to +150 °C operating junction temperature, supports repetitive 0.01% duty cycle surges, and meets UL 497B recognition (QVGQ2) for telecom and industrial protectors. Its MSL Level 1 rating confirms suitability for standard reflow without preconditioning.
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 at 1 mA - Confirmed breakdown range ensures reliable triggering across process variation and temperature. |
| VC @ IPPM | 77.4 V at 7.8 A - Clamping voltage during 600 W surge; limits stress on protected ICs like CAN transceivers or ADC front-ends. |
| PPPM | 600 W (10/1000 μs) - Peak surge handling capacity suitable for IEC 61000-4-5 Level 3 (1 kV/2 Ω) and ISO 7637-2 Pulse 1/2/5a. |
| ID @ VWM | 1.0 μA max - Ultra-low leakage preserves signal integrity in high-impedance sensor or reference circuits. |
| TJ max | +150 °C - Enables use in under-hood automotive environments and thermally constrained industrial enclosures. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, and ESD testing per JESD22 standards. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking. 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 (bidirectional) | Accepts surge current from either direction; connects to line being protected (e.g., CAN_H or RS-485 A). |
| Cathode | Transient current exit (bidirectional) | Completes shunt path to ground or return rail; requires low-inductance layout to minimize clamping overshoot. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC-coupled or differential lines (e.g., CAN, RS-485, USB D+/D−) without polarity constraints. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 1 kV open-circuit / 0.5 kA short-circuit without degradation. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, body electronics, and ADAS sensor interfaces. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without baking or special handling requirements. |
| Glass passivated junction | Ensures stable VBR over lifetime and improved resistance to humidity-induced parameter drift. |
Applications
| Automotive Sensor Protection | CAN Bus Transient Suppression |
|---|---|
|
Use Scenario: Protecting analog output sensors (e.g., pressure, temperature) in engine bay or chassis modules from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Shunt TVS placed between sensor signal line and chassis ground to clamp transients before they reach ADC input or signal conditioner. Use Value: Maintains signal fidelity by limiting voltage excursion to ≤77.4 V during 600 W surges, preventing ADC saturation or op-amp latch-up. |
Use Scenario: Safeguarding high-speed CAN FD transceivers against ESD (IEC 61000-4-2 ±25 kV) and burst noise (IEC 61000-4-4). IC Role / Device Role / Timing Role: Bidirectional clamping element across CAN_H/CAN_L differential pair, referenced to common-mode ground. Use Value: Preserves signal integrity with <12.5 ns response and low capacitance (<100 pF), avoiding data corruption at 5 Mbps CAN FD rates. |
| Industrial I/O Module Protection | Telecom Line Interface Protection |
|
Use Scenario: Shielding 24 V DC digital inputs in PLC I/O cards from field-wiring induced surges and ground loop transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on each input channel, mounted directly at connector entry point. Use Value: Enables robust operation in harsh factory environments with repeated 1 kV/42 Ω surges per IEC 61000-4-5 Level 3. |
Use Scenario: Protecting Ethernet PHY or DSL line drivers from lightning-induced surges on outdoor-facing telecom ports. IC Role / Device Role / Timing Role: First-stage protector on twisted-pair line interface, coordinated with gas discharge tube (GDT) secondary stage. Use Value: Provides fast-response clamping (≤77.4 V) while GDT handles bulk energy, extending system-level surge survivability beyond 5 kA. |
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/VC, but lower PPPM = 600 W (same rating), different package: SMB (DO-214AA), slightly larger footprint (4.57 mm × 3.94 mm vs. SMBG's 4.57 mm × 3.94 mm - identical L/W but taller profile). | Less suitable for ultra-thin PCBs due to 2.41 mm height vs. SMBG's 2.10 mm; same thermal resistance RθJA = 100 °C/W. | Select SMBJ48CA-E3/52 only if existing layout uses SMB footprint or requires higher IFSM (100 A vs. SMBG's unidirectional-only rating). |
| SMCJ48CAHE3/52 | Higher PPPM = 1500 W, same VWM/VC, larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), RθJA = 35 °C/W. | Used where sustained surge energy exceeds SMBG48CAHE3/52 capability - e.g., primary protection in telecom base stations or solar inverters. | Choose SMCJ48CAHE3/52 when system-level surge tests exceed IEC 61000-4-5 Level 4; not drop-in due to size and pad layout mismatch. |
Compared with SMBJ48CA-E3/52 and SMCJ48CAHE3/52, SMBG48CAHE3/52 delivers optimal balance of low-profile packaging, AEC-Q101 qualification, and 600 W surge handling - making it preferred for space-constrained automotive and industrial edge nodes where height and qualification are critical.
Availability
SMBG48CAHE3/52 is available at Aetrix Electronics and suitable for automotive sensor interfaces, CAN bus nodes, industrial PLC I/O modules, and telecom line interfaces requiring stable component supply across extended production lifecycles.
Supply support for SMBG48CAHE3/52 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and application-specific performance.
The SMBG series targets high-reliability transient suppression in automotive, industrial, and telecom systems - engineered for AEC-Q101 compliance, low-profile SMT assembly, and repeatable clamping behavior under surge stress.
FAQ
What is the clamping voltage of SMBG48CAHE3/52 at its rated peak pulse current?
The SMBG48CAHE3/52 has a maximum clamping voltage (VC) of 77.4 V at 7.8 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per JEDEC test standards and ensures protected circuitry remains below critical voltage thresholds during surge events. The SMBG48CAHE3/52 maintains this clamping performance across its full operating temperature range (-55 °C to +150 °C).
Is SMBG48CAHE3/52 suitable for automotive applications?
Yes, SMBG48CAHE3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its construction includes glass-passivated junctions, MSL Level 1 reflow compatibility, and validation across temperature cycling, humidity, and surge stress tests required by automotive standards. The SMBG48CAHE3/52 meets UL 497B recognition for protector classification in vehicle subsystems.
What does the "HE3" suffix indicate in SMBG48CAHE3/52?
The "HE3" suffix in SMBG48CAHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification - distinguishing it from industrial-grade "E3" variants. HE3 parts undergo additional reliability screening per AEC-Q101, including HTOL, temperature cycling, and ESD testing. The "52" indicates 7″ diameter tape-and-reel packaging with 750 units per reel, optimized for high-volume SMT assembly.
How does SMBG48CAHE3/52 differ from unidirectional SMBG48AHE3/52?
SMBG48CAHE3/52 is bidirectional with symmetrical clamping in both polarities, while SMBG48AHE3/52 is unidirectional and conducts only from cathode to anode. The "CA" suffix confirms bidirectional operation - essential for protecting AC-coupled or differential signals like CAN or RS-485. SMBG48CAHE3/52 has no polarity marking; SMBG48AHE3/52 uses a cathode band. Both share identical VWM, VBR, and PPPM, but only the unidirectional version supports 100 A IFSM.
What is the thermal resistance of SMBG48CAHE3/52, and how does it affect layout?
The SMBG48CAHE3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2″ × 0.2″ (5.0 mm × 5.0 mm) copper pads per terminal. To maintain safe junction temperatures under repeated surges, PCB layout must replicate this pad area and ensure solid thermal vias to inner ground planes. Reducing pad size increases RθJA, risking thermal runaway during high-duty-cycle transients - a key design constraint for the SMBG48CAHE3/52.
SMBG48CAHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG48CAHE3/52 FAQ
1.How can I place an order for SMBG48CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG48CAHE3/52 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 SMBG48CAHE3/52 reliable?
The price and inventory of SMBG48CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG48CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG48CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG48CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG48CAHE3/52?
SMBG48CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG48CAHE3/52 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 SMBG48CAHE3/52?
For technical support, including SMBG48CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG48CAHE3/52 requirements.
6.How does Aetrix verify that SMBG48CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG48CAHE3/52 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 SMBG48CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG48CAHE3/52?
All SMBG48CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG48CAHE3/52, 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 SMBG48CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBG48CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG48CAHE3/52 Tags
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