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Vishay General Semiconductor - Diodes Division SMBG54CAHE3/5B
- Part No.:
- SMBG54CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG54CAHE3/5B.pdf
- Description:
- TVS DIODE 54VWM 87.1VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,854
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Product details
Overview
SMBG54CAHE3/5B 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 a 54 V standoff voltage (VWM), 600 W peak pulse power (10/1000 μs), 87.1 V maximum clamping voltage at rated surge current, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG54CAHE3/5B datasheet, SMBG54CAHE3/5B pinout, SMBG54CAHE3/5B application, or SMBG54CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM ≈ 1.61), MSL Level 1 moisture sensitivity, and compatibility with automated SMT assembly on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during ESD or lightning-induced surges, conducting above its breakdown voltage (VBR = 60.0–66.3 V at 1 mA) while limiting downstream voltage to ≤87.1 V at 6.9 A peak pulse current. Its glass-passivated junction ensures stable avalanche characteristics and low leakage (<1.0 μA at 54 V).
The SMBG54CAHE3/5B exhibits symmetric bidirectional behavior - identical electrical specs in both polarities - and meets UL 497B recognition (QVGQ2) for telecom and industrial protectors. Thermal resistance is RθJA = 100 °C/W (on recommended pad layout) and RθJL = 20 °C/W, enabling robust surge handling up to 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 54 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line operating margin. |
| VBR (min/max) | 60.0 V / 66.3 V at 1 mA - Ensures tight breakdown tolerance for predictable clamping onset across production lots. |
| VC @ IPPM | 87.1 V at 6.9 A - Limits protected circuit voltage during 600 W transient, critical for IC-level ESD immunity. |
| PPPM | 600 W (10/1000 μs) - Sustains high-energy surges common in automotive load-dump or inductive switching events. |
| TJ max | +150 °C - Supports under-hood automotive environments and industrial enclosures without derating. |
| Qualification | AEC-Q101 qualified - Validated for automotive electronics per stress test requirements including HTRB, HTGB, and TCT. |
| MSL Level | Level 1 (J-STD-020) - No floor life limitation; supports standard reflow without baking prior to assembly. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 6.48 mm × 3.94 mm × 2.10 mm (L × W × H); matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient conduction path (bidirectional) | Acts as cathode when positive surge applied to cathode side; enables symmetrical clamping in either direction. |
| Cathode | Transient conduction path (bidirectional) | Acts as anode when positive surge applied to anode side; eliminates need for orientation-aware PCB layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal lines (e.g., CAN, RS-485) without polarity concerns. |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 50 Ω source impedance when properly mounted. |
| AEC-Q101 qualification | Validates reliability for automotive infotainment, ADAS sensor interfaces, and body control modules requiring long-term field stability. |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes overvoltage stress on downstream MOSFET gates or MCU I/O pins during transient events. |
| UL 497B recognition (QVGQ2) | Meets safety agency requirements for telecom and industrial communication port protection without additional certification effort. |
Applications
| Automotive Sensor Interface | Industrial RS-485 Bus |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs against load-dump and jump-start induced transients in vehicle door modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed between transceiver I/O and connector, clamping ±87.1 V surges within nanoseconds. Use Value: Prevents latch-up or gate oxide damage in transceivers by limiting voltage excursion below 90 V during 600 W pulses. | Use Scenario: Shielding RS-485 data lines in factory automation PLCs from EFT bursts and ground-loop surges. IC Role / Device Role / Timing Role: Differential-line TVS connected across A/B bus terminals, providing symmetrical clamping without affecting DC bias. Use Value: Maintains signal integrity during 10/1000 μs surges up to 6.9 A while adding <1 pF capacitance at 0 V bias. |
| Consumer USB Port Protection | Telecom DSL Line Interface |
Use Scenario: Safeguarding USB 2.0 D+/D− lines in set-top boxes against human-body-model ESD (±8 kV contact). IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed directly at USB connector, shunting ESD current away from PHY IC. Use Value: Clamps sub-100 ns ESD events to <87.1 V, preserving USB eye diagram and preventing PHY reset or damage. | Use Scenario: Protecting ADSL/VDSL line drivers from lightning-induced surges on outdoor telephone lines. IC Role / Device Role / Timing Role: Primary surge protector on line-side transformer secondary, rated for UL 497B Class B telecom applications. Use Value: Absorbs up to 600 W surge energy while maintaining <1.0 μA leakage at 54 V, ensuring minimal impact on line impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ54CA | Same VWM/VC, but lower PPPM = 600 W (same rating), different package (SMB vs. SMBG); RθJA = 110 °C/W vs. 100 °C/W. | Less thermal margin on dense PCBs; not AEC-Q101 qualified. | Select SMBG54CAHE3/5B for automotive or thermally constrained layouts requiring higher reliability assurance. |
| 1.5KE54CA | Higher PPPM = 1500 W, axial DO-201 package, VC = 93.6 V, slower response due to higher junction capacitance. | Not SMT-compatible; unsuitable for high-speed data lines or space-constrained designs. | Choose SMBG54CAHE3/5B where board space, automated assembly, and low clamping voltage are prioritized over raw power rating. |
Compared with SMBJ54CA and 1.5KE54CA, SMBG54CAHE3/5B delivers superior thermal performance (RθJA = 100 °C/W), automotive qualification, and optimized SMT footprint - making it preferred for modern automotive ECUs and compact industrial controllers where layout density and long-term field reliability are critical.
Availability
SMBG54CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial RS-485 networks, consumer USB interface hardening, and telecom DSL line safeguarding requiring stable component supply across multi-year production cycles.
Supply support for SMBG54CAHE3/5B 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 to deliver high-power, AEC-Q101-qualified TVS diodes in low-profile surface-mount packages for next-generation automotive and industrial systems demanding robust transient immunity without compromising board area.
FAQ
What is the clamping voltage of SMBG54CAHE3/5B at its rated peak pulse current?
The SMBG54CAHE3/5B has a maximum clamping voltage (VC) of 87.1 V at its rated peak pulse current (IPPM) of 6.9 A, measured under the standard 10/1000 μs waveform. This value ensures downstream components remain within safe voltage limits during surge events, and is confirmed in the Vishay datasheet Document Number 88456, Table on page 2.
Is SMBG54CAHE3/5B suitable for automotive applications?
Yes, SMBG54CAHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood environments. Its 150 °C maximum junction temperature, MSL Level 1 rating, and UL 497B recognition make it appropriate for protecting CAN/LIN transceivers, sensor interfaces, and body control modules - all validated per Vishay's qualification report referenced in datasheet revision 09-Jan-2024.
Does SMBG54CAHE3/5B have polarity markings on the package?
No, SMBG54CAHE3/5B is a bidirectional TVS diode and carries no polarity marking on the SMBG (DO-215AA) package. Unlike unidirectional variants, it functions identically in both directions - eliminating orientation constraints during placement and simplifying PCB layout for differential or AC-coupled signal lines.
What is the standoff voltage (VWM) specification for SMBG54CAHE3/5B?
The standoff voltage (VWM) for SMBG54CAHE3/5B is 54 V, representing the maximum continuous reverse voltage the device can block without entering avalanche conduction. This value is specified in the Electrical Characteristics table (page 2 of datasheet 88456) and ensures compatibility with 48 V automotive systems and industrial 48 VDC buses.
How does the SMBG54CAHE3/5B package differ from the SMBJ series?
The SMBG54CAHE3/5B uses the SMBG (DO-215AA) package - slightly longer (6.48 mm vs. 4.57 mm) and wider (3.94 mm vs. 3.94 mm same width, but different leadform) than SMBJ's DO-214AA - offering improved thermal dissipation (RθJA = 100 °C/W vs. 110 °C/W) and higher mechanical robustness. Both are SMT, but SMBG supports higher surge repetition rates in thermally demanding applications.
SMBG54CAHE3/5B 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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 54V
- Voltage - Breakdown (Min):
- 60V
- Voltage - Clamping (Max) @ Ipp:
- 87.1V
- Current - Peak Pulse (10/1000µs):
- 6.9A
- 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)
SMBG54CAHE3/5B FAQ
1.How can I place an order for SMBG54CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG54CAHE3/5B 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 SMBG54CAHE3/5B reliable?
The price and inventory of SMBG54CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG54CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG54CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG54CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG54CAHE3/5B?
SMBG54CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG54CAHE3/5B 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 SMBG54CAHE3/5B?
For technical support, including SMBG54CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG54CAHE3/5B requirements.
6.How does Aetrix verify that SMBG54CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG54CAHE3/5B 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 SMBG54CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG54CAHE3/5B?
All SMBG54CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG54CAHE3/5B, 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 SMBG54CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG54CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG54CAHE3/5B Tags
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