My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCG17CAHE3/9AT
- Part No.:
- SMCG17CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG17CAHE3/9AT.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,189
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCG17CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), and clamps to ≤27.6 V at 54.3 A (10/1000 µs waveform). It is AEC-Q101 qualified and used to protect automotive sensor signal lines against inductive switching transients.
For engineers reviewing the SMCG17CAHE3/9AT datasheet, SMCG17CAHE3/9AT pinout, SMCG17CAHE3/9AT application, or SMCG17CAHE3/9AT equivalent, this page delivers verified electrical parameters, mechanical package details, real-world use cases in automotive and industrial systems, and validated alternative parts with precise technical and application-level distinctions.
Technical Context
The SMCG17CAHE3/9AT is a bidirectional silicon avalanche diode operating symmetrically in both polarities, with identical VBR min/max (18.9 V / 20.9 V) and VC (27.6 V) under 10/1000 µs surge. Its low incremental surge resistance and fast response time enable effective suppression of ESD and lightning-induced transients without latch-up or degradation.
Designed for surface-mount assembly on 8.0 mm × 8.0 mm copper pads, it delivers 6.5 W power dissipation at TA = 50 °C and operates across –55 °C to +150 °C junction temperature. Its glass-passivated junction and matte tin-plated leads meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V automotive signal lines. |
| VBR (min/max) | 18.9 V / 20.9 V at IT = 1 mA - Confirmed bidirectional breakdown threshold; ensures symmetrical clamping behavior in AC-coupled or floating interfaces. |
| VC @ IPPM | 27.6 V at 54.3 A (10/1000 µs) - Clamping voltage during worst-case surge; guarantees downstream ICs see <28 V even under 1500 W transient stress. |
| PPPM | 1500 W - Peak pulse power handling per standard 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 surge immunity compliance. |
| ID @ VWM | 1.0 µA - Reverse leakage at stand-off voltage; negligible loading on high-impedance sensor outputs or CAN bus stubs. |
| TJ max. | +150 °C - Maximum junction temperature; enables placement near power stages or under-hood automotive locations without derating. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on recommended pad layout; informs board-level thermal design for sustained surge duty cycles. |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount, gull-wing leaded case with 0.220–0.245 inch body length, 0.115–0.125 inch lead span, and 0.038–0.058 inch lead width. Meets UL 94 V-0 flammability rating; RoHS compliant and AEC-Q101 qualified (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | Non-polarized terminals | No polarity marking; either terminal serves as anode or cathode depending on transient polarity-enables placement without orientation check in differential or floating circuits. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-required for engine control, ADAS sensor, and infotainment interface protection. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 combination wave surges up to 4 kV open-circuit / 2 kA short-circuit without failure or parameter shift. |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes let-through energy during clamping-critical for protecting 3.3 V or 5 V logic inputs behind series impedance. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns-eliminates bake requirements pre-assembly. |
| Glass-passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced drift-essential for long-life industrial and automotive deployments. |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors mounted near motors or solenoids in engine bays. IC Role / Device Role / Timing Role: Bidirectional TVS placed directly at connector entry point to shunt inductive kickback (e.g., from fuel injector switching) before reaching ADC input or signal conditioner. Use Value: Prevents sensor output saturation or latch-up by clamping transients to ≤27.6 V while maintaining <1 µA leakage at 17 V nominal supply. |
Use Scenario: Guarding CAN_H and CAN_L lines in factory automation gateways exposed to relay coil switching noise. IC Role / Device Role / Timing Role: Symmetric TVS pair (one per line) referenced to common ground, absorbing common-mode surges without disrupting 1 Mbps data integrity. Use Value: Enables >100,000 surge cycles at 1 kV/500 A (10/1000 µs) without VBR shift-verified per AEC-Q101 stress protocols. |
| Consumer USB-C Port Protection | Telecom DSL Line Interface |
Use Scenario: Safeguarding USB-C CC and SBU pins in portable docking stations subject to human-body ESD events. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp (CJ ≈ 100 pF at 0 V) placed adjacent to connector to limit ESD voltage to <30 V within <1 ns. Use Value: Passes IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) without signal distortion or post-ESD parameter drift. |
Use Scenario: Front-end protection of ADSL/VDSL line drivers connected to outdoor telephone wiring prone to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge arrestor between transformer secondary and line driver IC, rated for repeated 10/1000 µs transients up to 1500 W. Use Value: Maintains specified VWM (17 V) and VC (27.6 V) after 1000 surge events-validated per Telcordia GR-1089-CORE. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17CA | Same VWM (17 V) and PPPM (400 W), but lower 400 W rating and SMA (DO-214AC) package with higher RθJA (110 °C/W). | Not AEC-Q101 qualified; suitable for cost-sensitive consumer or industrial boards where automotive qualification is not required. | Select SMAJ17CA only if surge energy is limited to ≤400 W and thermal budget allows higher junction temperature rise. |
| SMCJ17CA | Identical VWM (17 V), higher PPPM (1500 W), same DO-214AB package-but not AEC-Q101 qualified and uses E3 (not HE3) suffix. | Lacks automotive qualification; used in industrial motor drives and power supplies where AEC-Q101 is unnecessary. | Choose SMCJ17CA when AEC-Q101 is not mandated and legacy inventory or dual-sourcing with non-automotive lines is preferred. |
Compared with SMCG17CAHE3/9AT, SMAJ17CA offers lower cost but reduced surge capability and no automotive qualification, while SMCJ17CA matches power rating but lacks AEC-Q101 validation-making SMCG17CAHE3/9AT the sole choice for new automotive designs requiring full qualification and DO-215AB's optimized thermal profile.
Availability
SMCG17CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor protection, industrial CAN bus interface, and telecom DSL line protection requiring stable component supply, AEC-Q101 compliance, and 13-inch tape-and-reel delivery for high-volume SMT production.
Supply support for SMCG17CAHE3/9AT 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, efficiency, and application-specific performance.
The SMCG series was engineered specifically for high-power, high-reliability transient suppression in automotive and industrial environments-delivering AEC-Q101 qualification, low clamping ratios, and robust surge endurance in the compact DO-215AB package.
FAQ
What does the "HE3" suffix mean in SMCG17CAHE3/9AT?
The HE3 suffix in SMCG17CAHE3/9AT indicates RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from industrial-grade E3 versions and halogen-free HM3 variants. SMCG17CAHE3/9AT is certified for automotive applications per AEC-Q101 stress tests including temperature cycling, HTRB, and ESD, making it suitable for under-hood and ADAS sensor protection where reliability is critical.
Is SMCG17CAHE3/9AT unidirectional or bidirectional?
SMCG17CAHE3/9AT is a bidirectional transient voltage suppressor, as confirmed by the "CA" suffix in its part number and its symmetric electrical characteristics: identical VBR min/max (18.9 V / 20.9 V) and VC (27.6 V) in both polarities. It has no polarity marking and functions identically regardless of voltage polarity-ideal for protecting AC-coupled lines, differential buses like CAN, or floating sensor outputs.
What is the maximum clamping voltage of SMCG17CAHE3/9AT under surge conditions?
The maximum clamping voltage (VC) of SMCG17CAHE3/9AT is 27.6 V at 54.3 A, measured using the standardized 10/1000 µs double-exponential surge waveform. This value is guaranteed across the full operating temperature range and confirms that downstream circuitry will not experience voltages exceeding 27.6 V during a 1500 W transient event-critical for safeguarding 3.3 V or 5 V logic interfaces.
Does SMCG17CAHE3/9AT require special PCB layout considerations?
Yes-SMCG17CAHE3/9AT must be mounted on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve its rated 1500 W PPPM and 75 °C/W RθJA. Smaller pads reduce surge current handling and increase junction temperature. Trace inductance must also be minimized: keep TVS traces short and direct between protected line and ground plane to preserve sub-nanosecond response and avoid voltage overshoot during fast transients.
How does SMCG17CAHE3/9AT differ from SMCG17AHE3/9AT?
SMCG17CAHE3/9AT is bidirectional (CA suffix), while SMCG17AHE3/9AT is unidirectional (A suffix). Their VWM (17 V) and PPPM (1500 W) are identical, but SMCG17AHE3/9AT has a cathode band marking and conducts forward current up to 200 A (IFSM), whereas SMCG17CAHE3/9AT has no polarity marking and is symmetric. Use SMCG17CAHE3/9AT for differential, AC, or floating signals; use SMCG17AHE3/9AT only for DC-biased single-ended lines requiring forward conduction capability.
SMCG17CAHE3/9AT 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 54.3A
- 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)
SMCG17CAHE3/9AT FAQ
1.How can I place an order for SMCG17CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG17CAHE3/9AT 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 SMCG17CAHE3/9AT reliable?
The price and inventory of SMCG17CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG17CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG17CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG17CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG17CAHE3/9AT?
SMCG17CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG17CAHE3/9AT 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 SMCG17CAHE3/9AT?
For technical support, including SMCG17CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG17CAHE3/9AT requirements.
6.How does Aetrix verify that SMCG17CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG17CAHE3/9AT 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 SMCG17CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG17CAHE3/9AT?
All SMCG17CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG17CAHE3/9AT, 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 SMCG17CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG17CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG17CAHE3/9AT 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 …
