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Vishay General Semiconductor - Diodes Division SMCG70CHE3/9AT
- Part No.:
- SMCG70CHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG70CHE3/9AT.pdf
- Description:
- TVS DIODE 70VWM 125VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,057
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Product details
Overview
SMCG70CHE3/9AT from Vishay General Semiconductor is a bi-directional transient voltage suppressor (TVS) in DO-215AB (SMCG) package, designed for clamping voltage transients on signal/power lines. It features 70 V stand-off voltage (VWM), 1500 W peak pulse power (PPPM), and 113 V maximum clamping voltage (VC) at 13.3 A IPPM - deployed in automotive sensor protection and industrial I/O interfaces.
For engineers reviewing the SMCG70CHE3/9AT datasheet, SMCG70CHE3/9AT pinout, SMCG70CHE3/9AT application, or SMCG70CHE3/9AT equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and bi-directional surge handling per 10/1000 µs waveform - critical for ESD and load-switching transient design validation.
Technical Context
This bi-directional TVS diode operates symmetrically across both polarities, with breakdown voltage (VBR) ranging from 77.8 V to 86.0 V at 1 mA test current. Its low incremental surge resistance enables rapid clamping response (<1 ns), while glass-passivated junction ensures stable leakage performance up to 150 °C junction temperature.
The device meets J-STD-020 MSL Level 1 (260 °C reflow peak), uses matte tin-plated leads compliant with JESD 22-B102, and carries AEC-Q101 qualification - confirming suitability for automotive-grade board-level surge protection without polarity marking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 70 V - defines maximum continuous reverse operating voltage before clamping initiates |
| PPPM (Peak Pulse Power) | 1500 W - sustains single 10/1000 µs surge events without failure under specified PCB pad layout |
| VC (Clamping Voltage) | 113 V at IPPM = 13.3 A - limits transient voltage seen by downstream ICs during surge conditions |
| VBR (Breakdown Voltage) | 77.8–86.0 V at IT = 1 mA - ensures reliable turn-on margin above VWM for bi-directional operation |
| ID (Reverse Leakage) | 1.0 µA max at VWM - guarantees minimal standby power loss and signal integrity in high-impedance circuits |
| TJ max | 150 °C - supports operation in under-hood automotive environments and industrial enclosures |
| RθJA | 75 °C/W - requires thermal pad design per 8.0 mm × 8.0 mm copper area per terminal for rated PD = 6.5 W |
Pinout & Package
Package: DO-215AB (SMCG) - surface-mount gull-wing leaded case, RoHS-compliant, AEC-Q101 qualified, no polarity marking for bi-directional function.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bi-directional surge path | Both terminals serve identical clamping roles; no cathode band marking required |
| Lead 1 / Lead 2 | Connection to protected line | Mounted on 8.0 mm × 8.0 mm copper pads per terminal to meet thermal and surge ratings |
Key Features
| Feature | Design Value |
|---|---|
| Bi-directional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concern |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control modules and ADAS sensor interfaces |
| Glass passivated junction | Ensures stable VBR and low ID over temperature and lifetime, critical for long-term field deployment |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without moisture-induced damage |
| Low RθJL (15 °C/W) | Facilitates efficient heat transfer from junction to PCB leads, improving surge repetition capability |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bi-directional voltage clamp placed between signal line and ground, responding within <1 ns to limit transient overshoot. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V interface ICs by clamping surges to ≤113 V while maintaining <1 µA leakage at 70 V. |
Use Scenario: Safeguarding PLC analog input channels and digital GPIOs against ESD and relay-coil flyback in factory automation systems. IC Role / Device Role / Timing Role: Standoff-mode protector that remains non-conductive until transient exceeds 70 V, then shunts energy to ground. Use Value: Enables robust 1500 W surge handling on compact PCB layouts using standardized 8 mm × 8 mm copper pads per terminal. |
| Telecom Line Interface | Consumer Device Port Protection |
Use Scenario: Shielding Ethernet PHY differential pairs and RS-485 transceivers from lightning-induced surges in outdoor telecom equipment. IC Role / Device Role / Timing Role: Symmetric clamping element placed across differential lines or line-to-ground, suppressing common-mode transients. Use Value: Maintains signal integrity with ≤1.0 µA leakage at 70 V while delivering 113 V clamping to preserve PHY IC operating margins. |
Use Scenario: Securing USB, HDMI, or audio jack connections in laptops and smart home hubs against human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: First-line defense TVS mounted directly at connector, diverting >8 kV contact ESD pulses away from SoC interfaces. Use Value: Leverages AEC-Q101 qualification and MSL Level 1 compatibility for high-yield automated assembly and field-reliability assurance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ70A-E3/57T | Uni-directional; 70 V VWM; 400 W PPPM; SMA package (DO-214AC); higher RθJA (~100 °C/W) | Requires polarity-aware layout; lower surge rating; less suitable for floating/differential lines | Select when cost sensitivity outweighs bi-directionality need and PCB space allows larger thermal pads |
| SMCJ70CAHE3/9AT | Same DO-215AB package; 70 V VWM; 1500 W PPPM; identical AEC-Q101 qualification and bi-directional function | No functional difference; alternate manufacturer prefix and ordering suffix only | Direct form-fit-function alternative with identical electrical and mechanical specifications |
Compared with SMAJ70A-E3/57T, SMCG70CHE3/9AT offers bi-directional symmetry and superior thermal performance (RθJA = 75 vs. ~100 °C/W); versus SMCJ70CAHE3/9AT, it is an identical-specification variant differing only in part numbering convention and tape/reel packaging configuration.
Availability
SMCG70CHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface hardening, and telecom line surge suppression requiring stable component supply and AEC-Q101 compliance.
Supply support for SMCG70CHE3/9AT 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, power handling, and automotive qualification.
The SMCG series targets high-energy transient suppression in space-constrained surface-mount applications, specifically engineered for AEC-Q101 compliance and bi-directional operation in harsh environments.
FAQ
What is the clamping voltage of SMCG70CHE3/9AT at its rated peak pulse current?
The SMCG70CHE3/9AT has a maximum clamping voltage (VC) of 113 V at its rated peak pulse current (IPPM) of 13.3 A, measured under the standard 10/1000 µs waveform condition. This value ensures downstream ICs experience limited overvoltage during surge events. The SMCG70CHE3/9AT maintains this clamping performance across its full operating temperature range and is validated per AEC-Q101 stress testing protocols.
Is SMCG70CHE3/9AT suitable for automotive applications?
Yes, SMCG70CHE3/9AT is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its DO-215AB package meets MSL Level 1 reflow requirements, and its 150 °C maximum junction temperature supports under-hood thermal environments. The SMCG70CHE3/9AT also carries Vishay's automotive material categorization per doc#99912.
Does SMCG70CHE3/9AT have polarity markings?
No, SMCG70CHE3/9AT is a bi-directional TVS diode and carries no polarity marking - consistent with the "CA" suffix designation in the SMCG family. Both terminals are functionally identical, enabling placement without orientation concerns on differential or floating signal lines. This distinguishes it from uni-directional variants like SMCG70A, which feature a cathode band.
What is the thermal resistance of SMCG70CHE3/9AT, and how does it affect layout?
The SMCG70CHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad per terminal. To achieve rated 6.5 W power dissipation and sustain 1500 W surge capability, PCB layout must replicate this pad area - undersized pads will cause excessive junction heating and derated surge performance. The SMCG70CHE3/9AT also exhibits RθJL = 15 °C/W for efficient lead-to-PCB conduction.
How does SMCG70CHE3/9AT compare to SMAJ70A in surge handling capability?
SMCG70CHE3/9AT delivers 1500 W peak pulse power (PPPM) versus SMAJ70A's 400 W - a 275 % increase - due to its larger DO-215AB package and optimized thermal path. It also features lower RθJA (75 vs. ~100 °C/W) and bi-directional operation, whereas SMAJ70A is uni-directional and requires polarity-aware routing. The SMCG70CHE3/9AT is therefore preferred for high-energy transients in automotive and industrial settings where layout flexibility and robustness are critical.
SMCG70CHE3/9AT 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 125V
- Current - Peak Pulse (10/1000µs):
- 12A
- 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)
SMCG70CHE3/9AT FAQ
1.How can I place an order for SMCG70CHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG70CHE3/9AT 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 SMCG70CHE3/9AT reliable?
The price and inventory of SMCG70CHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG70CHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG70CHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG70CHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG70CHE3/9AT?
SMCG70CHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG70CHE3/9AT 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 SMCG70CHE3/9AT?
For technical support, including SMCG70CHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG70CHE3/9AT requirements.
6.How does Aetrix verify that SMCG70CHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG70CHE3/9AT 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 SMCG70CHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG70CHE3/9AT?
All SMCG70CHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG70CHE3/9AT, 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 SMCG70CHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG70CHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG70CHE3/9AT Tags
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