My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCG30CAHE3/9AT
- Part No.:
- SMCG30CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG30CAHE3/9AT.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,426
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCG30CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, designed for robust overvoltage protection of sensitive electronics. It features a 30 V stand-off voltage (VWM), 48.4 V maximum clamping voltage (VC) at 31.0 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (PPPM) with a 10/1000 µs waveform - deployed in automotive sensor signal lines, industrial I/O ports, and telecom interface protection.
For engineers reviewing the SMCG30CAHE3/9AT datasheet, SMCG30CAHE3/9AT pinout, SMCG30CAHE3/9AT application, or SMCG30CAHE3/9AT equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, DO-215AB mechanical data, clamping performance under surge conditions, and direct alternatives for bidirectional TVS selection in high-reliability designs.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with breakdown voltage (VBR) specified between 33.3 V and 36.8 V at 1.0 mA test current, and reverse leakage (ID) ≤1.0 µA at 30 V stand-off. Its low incremental surge resistance enables rapid energy diversion during transients induced by inductive switching or ESD events.
The device uses a glass-passivated silicon junction, meets MSL Level 1 per J-STD-020 (260 °C reflow peak), and is qualified to AEC-Q101 for automotive applications. Thermal resistance is 75 °C/W (junction-to-ambient) on standard 8.0 mm × 8.0 mm copper pads, supporting sustained operation up to TJ = +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - Maximum continuous reverse operating voltage before clamping begins; defines safe signal line bias range. |
| VBR min / max | 33.3 V / 36.8 V at IT = 1.0 mA - Confirmed bidirectional breakdown window; ensures predictable turn-on across polarity. |
| VC @ IPPM | 48.4 V at 31.0 A (10/1000 µs) - Clamping voltage limits downstream IC stress during worst-case surge events. |
| PPPM | 1500 W - Peak transient power handling capacity; supports IEC 61000-4-5 Level 4 surge immunity design. |
| ID @ VWM | ≤1.0 µA - Ultra-low leakage preserves signal integrity in high-impedance sensor or communication lines. |
| TJ max | +150 °C - Enables deployment in under-hood automotive modules and industrial enclosures without derating. |
| Qualification | AEC-Q101 qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD. |
Pinout & Package
SMCG30CAHE3/9AT uses the SMCG (DO-215AB) surface-mount package: gull-wing leads, matte tin-plated terminals solderable per J-STD-020, no polarity marking (bidirectional configuration). Case meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No polarity marking required; identical clamping behavior in either direction - simplifies PCB layout and eliminates orientation errors. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or differential signal paths (e.g., CAN, RS-485, sensor bridges) without polarity constraints. |
| AEC-Q101 qualification | Validated for automotive environments including thermal cycling, humidity, and surge endurance - reduces qualification effort for Tier 1 suppliers. |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes voltage overshoot during transients - critical for protecting 3.3 V or 5 V logic interfaces adjacent to protected lines. |
| MSL Level 1 rating | Supports standard SMT reflow profiles up to 260 °C peak without preconditioning - compatible with high-volume automated assembly. |
| Glass-passivated junction | Ensures stable VBR and low leakage over lifetime and temperature - improves long-term reliability in harsh industrial settings. |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine control units and ADAS modules. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector interface to clamp ESD and load-dump transients before reaching precision ADC front-end. Use Value: Maintains signal fidelity under ISO 10605 ±30 kV contact discharge while meeting AEC-Q100 Grade 0 ambient temperature requirements. |
Use Scenario: Shielding 24 V digital input channels on PLC modules from inductive kickback and field wiring surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on dry-contact or relay-driven inputs, coordinated with upstream series impedance. Use Value: Limits transient voltage to <48.4 V during 1500 W surges, preventing latch-up or damage to optocoupler or microcontroller GPIO. |
| Telecom Interface Protection | Consumer USB/Type-C Port Protection |
Use Scenario: Safeguarding RS-485 transceivers in base station backhaul links exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Differential-line TVS mounted directly at connector, suppressing common-mode transients before signal conditioning circuitry. Use Value: Symmetrical clamping ensures balanced noise rejection and preserves signal integrity up to 10 Mbps data rates. |
Use Scenario: Protecting VBUS and CC lines in USB Type-C receptacles against hot-plug transients and accidental 20 V adapter misconnection. IC Role / Device Role / Timing Role: Secondary protection stage after primary fuse or eFuse, absorbing residual energy missed by upstream limiting. Use Value: 30 V VWM aligns with USB PD 3.0 specification; 48.4 V VC prevents overvoltage stress on USB controller ESD structures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ30CA | Same VWM (30 V) and PPPM (400 W), but lower power rating; SMA (DO-214AC) package, larger footprint than SMCG. | Limited to lower-energy transients (IEC 61000-4-2 Level 3); not AEC-Q101 qualified. | Select when cost sensitivity outweighs automotive qualification or surge margin requirements. |
| 1.5KE30CA | Higher PPPM (1500 W), through-hole DO-201 package; higher thermal mass but incompatible with SMT-only assembly. | Suitable for legacy board designs or high-power industrial controls where manual assembly is acceptable. | Choose only if rework tolerance, higher surge repetition capability, or existing through-hole infrastructure is prioritized. |
Compared with SMAJ30CA and 1.5KE30CA, SMCG30CAHE3/9AT delivers AEC-Q101 compliance, DO-215AB space savings (30 % smaller footprint than SMA), and identical 1500 W surge rating - making it the optimal choice for new automotive and compact industrial designs requiring zero-layout rework.
Availability
SMCG30CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom interface boards requiring stable component supply, AEC-Q101 traceability, and consistent 13″ tape-and-reel delivery.
Supply support for SMCG30CAHE3/9AT 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 protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series was developed to deliver high-power, AEC-Q101-qualified TVS protection in ultra-compact surface-mount packages for next-generation automotive and industrial electronics where board space and qualification rigor are critical.
FAQ
What is the clamping voltage of SMCG30CAHE3/9AT under a 10/1000 µs surge?
The SMCG30CAHE3/9AT clamps to a maximum of 48.4 V when subjected to a 31.0 A peak pulse current with a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 standards and confirmed in the Vishay datasheet revision 09-Jan-2024. The clamping performance ensures downstream ICs remain within safe operating voltage limits during standardized surge events.
Is SMCG30CAHE3/9AT qualified for automotive use?
Yes, SMCG30CAHE3/9AT is explicitly AEC-Q101 qualified, as indicated by the "HE3" suffix in its part number and confirmed in the Vishay documentation. It has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD, making it suitable for under-hood and chassis-mounted automotive applications where reliability is mission-critical.
What does the "CA" suffix mean in SMCG30CAHE3/9AT?
The "CA" suffix denotes that SMCG30CAHE3/9AT is a bidirectional transient voltage suppressor. Unlike unidirectional variants (e.g., SMCG30A), the CA version provides symmetrical clamping in both directions - essential for protecting AC-coupled signals, differential buses, or circuits where polarity cannot be guaranteed during transient events.
What is the package type and lead finish of SMCG30CAHE3/9AT?
SMCG30CAHE3/9AT uses the SMCG (DO-215AB) surface-mount package with gull-wing leads and matte tin plating. It complies with J-STD-002 and JESD 22-B102 for solderability and passes JESD 201 Class 2 whisker testing. The package is rated MSL Level 1 and supports peak reflow temperatures up to 260 °C.
How does SMCG30CAHE3/9AT differ from SMCG30A?
SMCG30CAHE3/9AT is bidirectional with symmetrical clamping, while SMCG30A is unidirectional and features a cathode band marking. Their VWM (30 V) and PPPM (1500 W) are identical, but SMCG30A supports forward surge current (IFSM = 200 A) and has different leakage specs - making SMCG30A appropriate for DC-biased power rail protection, whereas SMCG30CAHE3/9AT suits AC or polarity-agnostic signal lines.
SMCG30CAHE3/9AT 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):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 31A
- 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)
SMCG30CAHE3/9AT FAQ
1.How can I place an order for SMCG30CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG30CAHE3/9AT 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 SMCG30CAHE3/9AT reliable?
The price and inventory of SMCG30CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG30CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG30CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG30CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG30CAHE3/9AT?
SMCG30CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG30CAHE3/9AT 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 SMCG30CAHE3/9AT?
For technical support, including SMCG30CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG30CAHE3/9AT requirements.
6.How does Aetrix verify that SMCG30CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG30CAHE3/9AT 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 SMCG30CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG30CAHE3/9AT?
All SMCG30CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG30CAHE3/9AT, 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 SMCG30CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG30CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG30CAHE3/9AT 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 …
