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Vishay General Semiconductor - Diodes Division SMCG5.0CAHE3/9AT
- Part No.:
- SMCG5.0CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG5.0CAHE3/9AT.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,251
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Product details
Overview
SMCG5.0CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection on signal and power lines. It features a 5.0 V stand-off voltage (VWM), 6.40–7.25 V breakdown voltage (VBR), 1500 W peak pulse power (PPPM), and clamps to ≤9.20 V at 163 A IPPM under 10/1000 µs waveform - ideal for automotive sensor interface protection per AEC-Q101.
For engineers reviewing the SMCG5.0CAHE3/9AT datasheet, SMCG5.0CAHE3/9AT pinout, SMCG5.0CAHE3/9AT application, or SMCG5.0CAHE3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, MSL Level 1 reflow compatibility, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 1.35), and DO-215AB thermal performance with RθJL = 15 °C/W.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche-based silicon junction to divert surge current away from downstream circuitry. Its bidirectional structure enables symmetrical clamping in both polarities without polarity marking, supporting AC-coupled or floating signal paths.
Designed for fast response (<1 ns), it maintains low incremental surge resistance and stable clamping across temperature (–55 °C to +150 °C TJ), with derating defined per Fig. 2 and validated on 8.0 mm × 8.0 mm copper pads. The glass-passivated junction ensures long-term reliability under repetitive surge stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - maximum continuous reverse voltage before significant leakage; defines operating margin below clamping threshold |
| VBR min/max | 6.40 V / 7.25 V at 10 mA - guaranteed avalanche initiation window; ensures consistent turn-on across production lot |
| VC @ IPPM | ≤9.20 V at 163 A - clamping voltage under 10/1000 µs surge; limits stress on protected ICs (e.g., CAN transceivers) |
| PPPM | 1500 W - peak transient energy handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) compliance with proper layout |
| ID @ VWM | 1000 µA max - low leakage preserves signal integrity in high-impedance sensor nodes |
| TJ max | +150 °C - enables under-hood automotive deployment; validated per AEC-Q101 stress test conditions |
| RθJL | 15 °C/W - low junction-to-lead thermal resistance; sustains repeated surges without thermal runaway when soldered to PCB copper |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, gull-wing leaded case with 0.310" × 0.400" footprint, UL 94 V-0 molding compound, matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; common node for bidirectional conduction path | Connected to line under protection; no polarity marking required for bidirectional operation |
| Cathode | Current exit terminal in forward bias; symmetrically identical to Anode in bidirectional configuration | Connected to line under protection; terminals are functionally interchangeable in CA-series devices |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD per JESD47; supports 15-year vehicle service life |
| MSL Level 1 | Unlimited floor life at ≤30 °C/60% RH; withstands 260 °C peak reflow without popcorn or delamination |
| Glass passivated junction | Eliminates surface contamination sensitivity; maintains stable VBR and low leakage after humidity exposure |
| Bidirectional symmetry | Identical VBR, VC, and IPPM in both directions; enables single-device protection of differential or AC-coupled buses |
| Low clamping ratio | VC/VBR ≤ 1.35 - minimizes voltage overshoot during fast transients, critical for 3.3 V/5 V logic interfaces |
Applications
| Automotive Sensor Interface | Industrial CAN Bus Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceiver inputs against load-dump and inductive switching transients in engine control units. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching PHY layer. Use Value: Enables compliance with ISO 7637-2 Pulse 1/2/5a while maintaining <100 ns response time and preserving signal rise/fall integrity. | Use Scenario: Safeguarding RS-485/CAN FD physical layer in factory automation PLCs exposed to motor drive noise. IC Role / Device Role / Timing Role: Line-side TVS suppressing common-mode surges induced by nearby 400 VAC motor inverters. Use Value: Withstands 1500 W peak pulses without degradation, ensuring >100,000 surge cycles in harsh EMI environments. |
| Consumer USB Type-C Port | Telecom DSL Line Interface |
Use Scenario: ESD and lightning-induced surge protection on USB 2.0 D+/D− lines in portable docking stations. IC Role / Device Role / Timing Role: Low-capacitance (CJ < 200 pF at 0 V) bidirectional clamp minimizing signal distortion at 480 Mbps. Use Value: Meets IEC 61000-4-2 Level 4 (±15 kV air/±8 kV contact) without compromising eye diagram integrity. | Use Scenario: Primary protection for ADSL/VDSL line drivers connected to outside plant wiring. IC Role / Device Role / Timing Role: First-stage surge diverter absorbing up to 10/700 µs telecom surges before secondary GDT or MOV stages. Use Value: Clamps to ≤9.2 V within nanoseconds, preventing latch-up in line driver amplifiers rated for ±12 V supply rails. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A-E3/57T | Unidirectional; VBR 6.40–7.07 V; same PPPM (1500 W); SMA (DO-214AC) package | Requires explicit polarity assignment; less suitable for AC or floating differential lines | Select when cost-sensitive industrial designs use unidirectional bias and existing SMA footprints |
| SMCJ5.0AHE3/9AT | Unidirectional; higher IPPM (172 A); same VWM/VBR range; SMC (DO-214AB) package with larger thermal mass | Higher surge endurance but larger footprint; not AEC-Q101 qualified | Prefer for non-automotive high-reliability power rail protection where board space allows SMC outline |
Compared with SMCG5.0CAHE3/9AT, SMAJ5.0A-E3/57T offers lower unit cost but requires polarity-aware layout, while SMCJ5.0AHE3/9AT delivers greater single-pulse robustness in a larger package without automotive qualification - making SMCG5.0CAHE3/9AT the optimal choice for space-constrained, AEC-Q101–mandated bidirectional signal line protection.
Availability
SMCG5.0CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN bus nodes, consumer USB Type-C ports, and telecom DSL line interfaces requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMCG5.0CAHE3/9AT 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 TVS devices with emphasis on reliability, power efficiency, and automotive-grade qualification.
The SMCG series targets high-surge, space-constrained applications demanding AEC-Q101 compliance and bidirectional clamping - engineered specifically for next-generation automotive ECUs, industrial fieldbus nodes, and high-speed interface protection.
FAQ
What is the clamping voltage of SMCG5.0CAHE3/9AT at its rated peak pulse current?
The SMCG5.0CAHE3/9AT clamps to a maximum of 9.20 V at its specified peak pulse current (IPPM) of 163 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed on the minimum recommended 8.0 mm × 8.0 mm copper pad layout. The low clamping voltage ensures protected downstream components - such as 5 V microcontrollers or CAN transceivers - remain within safe operating limits during surge events.
Is SMCG5.0CAHE3/9AT suitable for automotive applications?
Yes, SMCG5.0CAHE3/9AT is AEC-Q101 qualified and explicitly rated for automotive use. Its construction includes glass-passivated junctions, MSL Level 1 reflow capability, and validation across temperature cycling, high-temperature operating life, and unbiased HAST. The device meets requirements for engine control modules, body electronics, and ADAS sensor interfaces where reliability under thermal and electrical stress is critical. SMCG5.0CAHE3/9AT carries the HE3 suffix denoting AEC-Q101 qualification per Vishay's ordering nomenclature.
How does the bidirectional design of SMCG5.0CAHE3/9AT affect its circuit implementation?
The bidirectional design of SMCG5.0CAHE3/9AT eliminates the need for polarity marking or orientation-dependent placement - both terminals are functionally identical. This simplifies layout for AC-coupled lines (e.g., CAN H/L, RS-485 A/B) and floating differential interfaces. Unlike unidirectional TVS diodes, SMCG5.0CAHE3/9AT provides symmetrical clamping in either direction, ensuring consistent protection regardless of transient polarity, which is essential in systems subject to unpredictable surge sources like inductive switching or ESD.
What is the thermal resistance profile of SMCG5.0CAHE3/9AT, and how does it impact surge handling?
SMCG5.0CAHE3/9AT has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W when mounted on the specified 8.0 mm × 8.0 mm copper pads. The low RθJL enables rapid heat transfer from the junction to the PCB copper during short-duration surges (e.g., 10/1000 µs), preventing localized overheating and sustaining repeated 1500 W pulses. This thermal performance is integral to its AEC-Q101 qualification and distinguishes it from smaller-package alternatives with higher thermal impedance.
Does SMCG5.0CAHE3/9AT require special PCB layout considerations compared to other TVS diodes?
Yes - SMCG5.0CAHE3/9AT must be mounted on the minimum recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated PPPM and thermal performance. Smaller pads increase thermal impedance and reduce surge current capability. Additionally, short, wide traces between the device and protected line minimize inductance, preserving sub-nanosecond response. The DO-215AB outline requires precise stencil aperture design for gull-wing solder joints, and the absence of polarity marking means no silkscreen orientation is needed - unlike unidirectional variants.
SMCG5.0CAHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 163A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCG)
SMCG5.0CAHE3/9AT FAQ
1.How can I place an order for SMCG5.0CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG5.0CAHE3/9AT 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 SMCG5.0CAHE3/9AT reliable?
The price and inventory of SMCG5.0CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG5.0CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG5.0CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG5.0CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG5.0CAHE3/9AT?
SMCG5.0CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG5.0CAHE3/9AT 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 SMCG5.0CAHE3/9AT?
For technical support, including SMCG5.0CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG5.0CAHE3/9AT requirements.
6.How does Aetrix verify that SMCG5.0CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG5.0CAHE3/9AT 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 SMCG5.0CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG5.0CAHE3/9AT?
All SMCG5.0CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG5.0CAHE3/9AT, 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 SMCG5.0CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG5.0CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG5.0CAHE3/9AT Tags
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