My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCG70A-E3/9AT
- Part No.:
- SMCG70A-E3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG70A-E3/9AT.pdf
- Description:
- TVS DIODE 70VWM 113VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,181
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCG70A-E3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) package, with a 70 V stand-off voltage (VWM), 77.8–86.0 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), and clamping voltage of 113 V at 13.3 A IPPM. It protects MOSFETs and signal lines in automotive power systems against inductive switching transients.
For engineers reviewing the SMCG70A-E3/9AT datasheet, SMCG70A-E3/9AT pinout, SMCG70A-E3/9AT application, or SMCG70A-E3/9AT equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), DO-215AB mechanical outline, and real-world protection use cases for industrial and automotive electronics.
Technical Context
This unidirectional TVS diode operates by avalanche breakdown to clamp transient overvoltages above its VBR threshold while maintaining low leakage (<1 μA at VWM) and fast response time. Its glass-passivated junction ensures stable performance under repeated surge stress.
The device is rated for 1500 W peak pulse power (10/1000 µs waveform), supports 200 A non-repetitive forward surge current (IFSM), and features a maximum clamping voltage of 113 V at 13.3 A, enabling robust protection of 70 V-rated power rails and gate drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 70 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 77.8 V / 86.0 V at 1 mA - Confirmed breakdown range defining turn-on threshold tolerance |
| VC @ IPPM | 113 V at 13.3 A - Clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 1500 W - Peak transient energy absorption capability per IEC 61000-4-5 standard |
| RθJA | 75 °C/W - Thermal resistance from junction to ambient on 8 mm × 8 mm copper pads |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling and HTRB |
Pinout & Package
Package: SMCG (DO-215AB), surface-mount gull-wing leaded case with matte tin-plated terminals, RoHS-compliant (E3 suffix), MSL Level 1, 260 °C reflow compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (unidirectional) | Connected to protected circuit ground or low-side return path |
| Cathode | Reverse-biased terminal with band marking | Connected to line being protected; clamps to anode during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Ensures long-term stability and consistent VBR across temperature and life cycles |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision |
| AEC-Q101 qualification | Validates suitability for automotive powertrain and body electronics without derating |
| MSL Level 1 rating | Enables direct placement into high-volume SMT lines without baking or special handling |
| UL 94 V-0 molding compound | Meets flammability safety requirements for enclosed industrial and automotive enclosures |
Applications
| Automotive Power Rail Protection | Industrial Motor Drive Gate Protection |
|---|---|
Use Scenario: Protecting 70 V battery-fed control modules in start-stop systems from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges exceeding 70 V. Use Value: Limits transient voltage to ≤113 V at 13.3 A, safeguarding 80 V-rated DC-DC controllers and microcontrollers. | Use Scenario: Shielding IGBT gate drivers in HVAC compressors from Miller-induced voltage spikes during switching. IC Role / Device Role / Timing Role: Fast-clamping TVS connected across gate-source terminals to suppress dv/dt-induced false turn-on. Use Value: Sub-100 ns response time and 113 V clamping prevent gate oxide damage during 200 A surge events. |
| Telecom DC Power Input Protection | Automotive Sensor Signal Line Protection |
Use Scenario: Safeguarding 48 V telecom rectifier outputs against lightning-induced surges on outdoor cabinet feeds. IC Role / Device Role / Timing Role: Primary-level TVS on input bus, upstream of DC-DC converters and PMICs. Use Value: 1500 W PPPM rating handles multi-kA induced currents per IEC 61000-4-5 Level 4 testing. | Use Scenario: Protecting LIN bus transceivers and pressure sensor analog outputs from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS on signal line to ground, preserving signal integrity. Use Value: <1 μA leakage at 70 V ensures minimal impact on 12-bit ADC reference accuracy in sensor front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ70A-E3/57T | Same VWM (70 V), lower PPPM (400 W), SMA (DO-214AC) package, RθJA = 100 °C/W | Lower power handling limits use to sub-500 W surge environments; less suitable for automotive load dump | Select when board space is constrained and surge energy is limited to IEC 61000-4-2/4-5 Level 2 |
| SMCJ70A-E3/9AT | Same VWM (70 V), higher PPPM (1500 W), SMC (DO-214AB) package, RθJA = 50 °C/W, same AEC-Q101 qualification | Higher thermal efficiency allows sustained surge duty in high-temperature engine bays | Prefer when PCB layout permits larger SMC footprint and junction temperature must stay below 135 °C under repeated surges |
Compared with SMAJ70A-E3/57T, SMCG70A-E3/9AT delivers 3.75× higher surge power handling and better thermal dissipation in a slightly smaller footprint; versus SMCJ70A-E3/9AT, it trades 25 °C/W higher RθJA for reduced board area and identical surge rating-ideal for space-constrained automotive modules.
Availability
SMCG70A-E3/9AT is available at Aetrix Electronics and suitable for automotive power management, industrial motor drives, telecom DC inputs, and sensor interface circuits requiring stable component supply across extended production lifecycles.
Supply support for SMCG70A-E3/9AT 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, MOSFETs, and TVS devices for high-reliability industrial and automotive applications.
The SMCG series was developed specifically for AEC-Q101-compliant transient protection in compact surface-mount formats, targeting space-constrained 12 V–48 V power systems where DO-215AB's gull-wing leads enable automated placement and robust solder joint reliability.
FAQ
What is the clamping voltage of SMCG70A-E3/9AT at its rated peak pulse current?
The SMCG70A-E3/9AT has a maximum clamping voltage (VC) of 113 V at its specified peak pulse current (IPPM) of 13.3 A, measured using the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is critical for ensuring downstream components remain within their absolute maximum ratings. The SMCG70A-E3/9AT maintains this clamping performance across its full operating temperature range.
Is SMCG70A-E3/9AT qualified for automotive applications?
Yes, SMCG70A-E3/9AT is AEC-Q101 qualified, confirming its reliability for automotive electronic systems including engine control units, body control modules, and ADAS power supplies. The qualification covers stress tests such as temperature cycling, highly accelerated life testing (HALT), and surge endurance under defined waveforms. As an E3-suffix part, SMCG70A-E3/9AT meets RoHS compliance and industrial-grade specifications, with full AEC-Q101 validation documented in Vishay's certification files.
What does the "E3/9AT" suffix indicate in SMCG70A-E3/9AT?
The "E3" suffix denotes RoHS-compliant, industrial-grade construction with matte tin-plated leads meeting J-STD-002 solderability standards. The "9AT" indicates packaging in a 13-inch diameter plastic tape-and-reel format containing 3500 units per reel-optimized for high-volume SMT assembly lines. This differs from "57T" (7-inch reel, 850 units) and confirms SMCG70A-E3/9AT is configured for automated pick-and-place manufacturing without manual handling or repackaging.
How does the thermal resistance of SMCG70A-E3/9AT affect its surge capability in real PCB layouts?
SMCG70A-E3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. In real PCB layouts, this means each 1 W of average power dissipation raises junction temperature by ~75 °C above ambient-critical for repetitive surge scenarios. For single-event transients, thermal mass dominates; however, sustained or frequent surges require careful copper pour design to avoid exceeding the +150 °C TJ max. Derating curves in Figure 2 of the datasheet guide safe operation above 25 °C ambient.
Can SMCG70A-E3/9AT be used in bidirectional configurations?
No, SMCG70A-E3/9AT is a unidirectional TVS diode, identifiable by its cathode band marking and specified parameters (e.g., VBR only given for one polarity). Bidirectional variants carry the "CA" suffix (e.g., SMCG70CA). Using SMCG70A-E3/9AT in bidirectional signal paths would leave one polarity unprotected and may cause forward conduction failure. For AC or differential-line protection, select the corresponding CA-part or pair unidirectional devices back-to-back with appropriate layout isolation.
SMCG70A-E3/9AT 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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 70V
- Voltage - Breakdown (Min):
- 77.8V
- Voltage - Clamping (Max) @ Ipp:
- 113V
- Current - Peak Pulse (10/1000µs):
- 13.3A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCG)
SMCG70A-E3/9AT FAQ
1.How can I place an order for SMCG70A-E3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG70A-E3/9AT 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 SMCG70A-E3/9AT reliable?
The price and inventory of SMCG70A-E3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG70A-E3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG70A-E3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG70A-E3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG70A-E3/9AT?
SMCG70A-E3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG70A-E3/9AT 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 SMCG70A-E3/9AT?
For technical support, including SMCG70A-E3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG70A-E3/9AT requirements.
6.How does Aetrix verify that SMCG70A-E3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG70A-E3/9AT 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 SMCG70A-E3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG70A-E3/9AT?
All SMCG70A-E3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG70A-E3/9AT, 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 SMCG70A-E3/9AT part is unused and in its original packaging.
Return procedure for SMCG70A-E3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG70A-E3/9AT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
