My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMCG24CAHE3/57T
- Part No.:
- SMCG24CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG24CAHE3/57T.pdf
- Description:
- TVS DIODE 24VWM 38.9VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,494
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMCG24CAHE3/57T 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 24 V stand-off voltage (VWM), 26.7–29.5 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (PPPM), clamping voltage of 38.9 V at 38.6 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMCG24CAHE3/57T datasheet, SMCG24CAHE3/57T pinout, SMCG24CAHE3/57T application, or SMCG24CAHE3/57T equivalent, key selection criteria include bidirectional clamping capability, low clamping ratio (VC/VWM ≈ 1.62), MSL Level 1 moisture sensitivity, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector, responding to transients with sub-nanosecond avalanche turn-on. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity concerns in AC-coupled or floating interfaces. The glass-passivated junction delivers stable leakage (<1.0 µA at VWM) and repeatable breakdown characteristics across temperature.
Thermal design relies on low RθJL (15 °C/W) and moderate RθJA (75 °C/W), enabling effective power dissipation under repetitive surge conditions when mounted per recommended pad layout. The 10/1000 µs waveform rating reflects standardized lightning/surge immunity testing per ANSI/IEEE C62.35.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 24 V - Maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 26.7 V / 29.5 V at 1 mA - Ensures reliable triggering above system operating voltage with margin |
| VC @ IPPM | 38.9 V at 38.6 A - Clamped voltage during 1500 W transient, limiting stress on downstream ICs |
| PPPM | 1500 W - Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) without failure |
| ID @ VWM | ≤1.0 µA - Negligible leakage current preserves signal integrity in high-impedance sensor lines |
| TJ max | +150 °C - Supports operation in under-hood automotive environments and industrial enclosures |
| AEC-Q101 | Qualified - Validated for automotive electronics per stress test requirements (HTOL, TC, HTRB) |
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 width, and 0.024–0.040 inch lead span. Matte tin-plated terminals meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias (unidirectional mode) | Not used in bidirectional operation; symmetric terminal for transient conduction in either direction |
| Cathode | Current exit point in forward bias (unidirectional mode) | Not used in bidirectional operation; symmetric terminal - no polarity marking on SMCG24CAHE3/57T |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR and VC performance in both directions eliminates need for polarity-aware layout |
| AEC-Q101 qualification | Validated reliability for automotive powertrain, body control, and ADAS modules requiring long-term field stability |
| Low clamping ratio (VC/VWM) | 1.62 - Minimizes overvoltage exposure to protected ICs compared to higher-ratio TVS devices |
| MSL Level 1 rating | Unlimited floor life at ≤30 °C/60% RH - supports just-in-time SMT assembly without baking |
| Glass-passivated junction | Enhances ESD robustness and long-term parameter stability versus epoxy-passivated alternatives |
Applications
| Automotive CAN Bus Protection | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protecting CAN_H/CAN_L differential pair against load dump, jump-start, and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector interface, clamping surges before they reach CAN transceiver. Use Value: Maintains CAN signal integrity by limiting voltage excursions to ≤38.9 V, preventing transceiver latch-up or damage during ISO 7637-2 Pulse 5a. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA, 0–10 V) from inductive switching noise in PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional clamp across signal and return lines, absorbing fast transients induced by relay coil de-energization. Use Value: Enables reliable operation with <1.0 µA leakage at 24 V, avoiding offset errors in precision current loops. |
| Telecom Line Interface | Consumer USB Port ESD Protection |
Use Scenario: Shielding RS-485 transceivers in base station backhaul equipment from lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge arrestor on differential bus lines, coordinated with secondary GDT or polymer PTC for staged protection. Use Value: 1500 W PPPM rating sustains multiple 10/1000 µs surges per IEC 61000-4-5, extending system MTBF in outdoor deployments. | Use Scenario: Adding robust ESD immunity to USB 2.0 data lines (D+/D−) in portable media players and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed adjacent to connector, suppressing ±15 kV contact discharge per IEC 61000-4-2. Use Value: Sub-nanosecond response prevents ESD energy from propagating into USB PHY, preserving signal rise/fall times. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24CA-E3/57T | Same VWM (24 V) and PPPM (400 W), but lower power rating and SMA (DO-214AC) package | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 | Select SMCG24CAHE3/57T when 1500 W surge handling and AEC-Q101 compliance are required |
| SMCJ24CAHE3/57T | Same VWM (24 V), PPPM (1500 W), and AEC-Q101, but SMC (DO-214AB) package with higher RθJA (85 °C/W) | Requires larger thermal pad area to achieve equivalent junction temperature rise | Prefer SMCG24CAHE3/57T for space-constrained layouts where DO-215AB's smaller footprint and lower RθJA improve thermal margin |
Compared with SMAJ24CA-E3/57T and SMCJ24CAHE3/57T, SMCG24CAHE3/57T delivers identical electrical protection performance in a more compact, thermally efficient package with verified automotive qualification - making it optimal for next-generation ECU and ADAS sensor node designs where board area and thermal headroom are constrained.
Availability
SMCG24CAHE3/57T is available at Aetrix Electronics and suitable for automotive CAN bus protection, industrial sensor signal conditioning, telecom line interface hardening, and consumer USB port ESD protection requiring stable component supply and full traceability.
Supply support for SMCG24CAHE3/57T 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 specifically for high-power, automotive-grade transient suppression in space-constrained SMT applications - combining AEC-Q101 validation, low-profile gull-wing packaging, and industry-leading clamping performance.
FAQ
What does the 'CA' suffix indicate in SMCG24CAHE3/57T?
The 'CA' suffix in SMCG24CAHE3/57T denotes a bidirectional configuration, meaning the device provides symmetrical transient voltage suppression in both polarities. This eliminates polarity marking on the package and enables use in AC-coupled or floating circuits such as CAN bus, RS-485, or audio lines - unlike unidirectional variants (e.g., SMCG24A) that require correct anode/cathode orientation. The SMCG24CAHE3/57T maintains identical VBR, VC, and IPPM values regardless of voltage polarity applied.
Is SMCG24CAHE3/57T suitable for automotive applications?
Yes, SMCG24CAHE3/57T is explicitly AEC-Q101 qualified, having passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and high-temperature reverse bias (HTRB). Its 1500 W peak pulse power, 24 V stand-off voltage, and DO-215AB package with matte tin leads meet stringent requirements for engine control units, body electronics, and ADAS sensors. The HE3 suffix confirms RoHS compliance and automotive qualification - making SMCG24CAHE3/57T appropriate for under-hood and cabin-mounted systems.
How does the SMCG (DO-215AB) package compare to SMA or SMC packages?
The SMCG (DO-215AB) package used by SMCG24CAHE3/57T offers a 30 % smaller footprint than SMC (DO-214AB) and improved thermal resistance (RθJL = 15 °C/W vs. ~20 °C/W for SMC), while maintaining gull-wing leads compatible with standard reflow profiles. Unlike SMA (DO-214AC), SMCG supports 1500 W PPPM - triple SMAJ's 400 W rating. The SMCG24CAHE3/57T leverages this to deliver higher surge robustness in less board area than alternatives, with MSL Level 1 handling simplifying manufacturing logistics.
What is the maximum clamping voltage of SMCG24CAHE3/57T and why does it matter?
The maximum clamping voltage (VC) of SMCG24CAHE3/57T is 38.9 V at 38.6 A (10/1000 µs waveform). This value defines the highest voltage imposed on protected circuitry during a surge event - critical for ensuring downstream components (e.g., CAN transceivers rated to 40 V absolute maximum) remain within safe operating limits. With a clamping ratio (VC/VWM) of 1.62, SMCG24CAHE3/57T provides tighter voltage control than many competing TVS diodes, reducing risk of latch-up or parametric shift in sensitive ICs.
Does SMCG24CAHE3/57T require special PCB layout considerations?
Yes - optimal performance of SMCG24CAHE3/57T requires mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet. This pad area ensures adequate heat spreading to sustain 1500 W pulses and maintain junction temperature below 150 °C. Short, direct traces to protected lines minimize inductance, and ground planes should be solid beneath the device. The SMCG24CAHE3/57T has no polarity marking, so orientation is non-critical, but thermal relief on inner layers must accommodate its 75 °C/W RθJA rating.
SMCG24CAHE3/57T 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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 38.9V
- Current - Peak Pulse (10/1000µs):
- 38.6A
- 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)
SMCG24CAHE3/57T FAQ
1.How can I place an order for SMCG24CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG24CAHE3/57T 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 SMCG24CAHE3/57T reliable?
The price and inventory of SMCG24CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG24CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG24CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG24CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG24CAHE3/57T?
SMCG24CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG24CAHE3/57T 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 SMCG24CAHE3/57T?
For technical support, including SMCG24CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG24CAHE3/57T requirements.
6.How does Aetrix verify that SMCG24CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG24CAHE3/57T 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 SMCG24CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG24CAHE3/57T?
All SMCG24CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG24CAHE3/57T, 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 SMCG24CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCG24CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG24CAHE3/57T 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 …
