My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC47CAHE3/9AT
- Part No.:
- 1.5SMC47CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47CAHE3/9AT.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,593
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC47CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode designed for robust ESD and surge protection in DC power rails and signal lines. It features a 47 V standoff voltage (VWM), 64.8 V maximum clamping voltage (VC) at 23.1 A peak pulse current, and 1500 W peak pulse power capability with 10/1000 µs waveform - deployed in automotive sensor interfaces, industrial I/O modules, and telecom line cards.
For engineers reviewing the 1.5SMC47CAHE3/9AT datasheet, 1.5SMC47CAHE3/9AT pinout, 1.5SMC47CAHE3/9AT application, or 1.5SMC47CAHE3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, AEC-Q101 qualification for automotive use, SMC (DO-214AB) package thermal performance, and compliance with UL 497B surge protector classification.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ at 40.2 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown threshold (44.7–49.4 V at 1 mA). Its bidirectional architecture ensures symmetrical clamping in both polarities without polarity dependence.
Thermal design relies on its SMC package's 15 °C/W junction-to-lead resistance and 75 °C/W junction-to-ambient rating; derating begins above 25 °C ambient per Figure 2. It meets J-STD-020 MSL Level 1 and withstands 260 °C reflow peak temperature, supporting automated SMT assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 40.2 V - Maximum continuous reverse voltage before leakage exceeds 1 µA; defines safe operating rail margin. |
| VBR (Breakdown) | 44.7–49.4 V at 1 mA - Voltage range where device transitions to avalanche conduction; ensures predictable turn-on. |
| VC (Clamping) | 64.8 V at 23.1 A - Maximum voltage seen by protected circuit during 10/1000 µs surge; determines downstream IC survivability. |
| PPPM | 1500 W - Peak surge power handling with 10/1000 µs waveform; supports lightning-induced transients per IEC 61000-4-5. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard. |
| Package | SMC (DO-214AB) - Surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement; supports 6.5 W steady-state dissipation. |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with matte tin-plated leads; meets UL 94 V-0 flammability rating and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal (bidirectional) | One of two symmetrical terminals; no polarity marking; connects to protected line or ground reference. |
| Cathode | Current exit terminal (bidirectional) | Second symmetrical terminal; identical electrical role to Anode; forms bidirectional clamping path. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns. |
| 1500 W peak pulse power | Withstands 10/1000 µs surges up to 23.1 A - sufficient for Level 4 IEC 61000-4-5 (4 kV) on 2 Ω source impedance. |
| AEC-Q101 qualification | Validated for automotive electronics including engine control units, ADAS sensors, and body controllers. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and 260 °C lead-free reflow compatibility without dry-pack requirements. |
| Glass-passivated junction | Ensures stable breakdown characteristics and long-term reliability under repeated surge stress. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt TVS diode placed between signal line and chassis ground; clamps transients within nanoseconds. Use Value: Maintains signal integrity below 64.8 V during 10/1000 µs surges, preventing latch-up or damage to 5 V/3.3 V interface ICs. |
Use Scenario: Safeguarding 24 V digital input channels in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on input terminal block; absorbs energy before reaching optocoupler or MCU GPIO. Use Value: Limits transient voltage to ≤64.8 V at 23.1 A, enabling reliable operation in harsh factory environments with frequent switching noise. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Secondary-side surge suppression on Ethernet PHY power rails (e.g., 3.3 V bias supply) and RS-485 data lines in network switches. IC Role / Device Role / Timing Role: Bidirectional clamping element across VCC-GND or differential pair; activated only during fault events. Use Value: Symmetrical 44.7–49.4 V breakdown ensures equal protection for positive/negative transients, critical for full-duplex communication links. |
Use Scenario: Input-stage transient suppression on 12 V/19 V DC input of USB-C PD adapters and smart home hubs exposed to mains-borne surges. IC Role / Device Role / Timing Role: First-line defense against fast-rising EFT (IEC 61000-4-4) and surge (IEC 61000-4-5) events entering via AC/DC front-end. Use Value: 1500 W peak power rating sustains multiple 10/1000 µs surges without degradation, meeting UL 62368-1 safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47CA | Same VWM (40.2 V) and VC (64.8 V), but lower PPPM (600 W); SMB package (smaller footprint, higher RθJA = 110 °C/W). | Limited to lower-energy transients (e.g., ESD-only); unsuitable for IEC 61000-4-5 Level 3+ or automotive load dump. | Select when board space is constrained and surge energy is <600 W; verify thermal margin with reduced copper area. |
| 1.5KE47CA | Same electrical specs but axial DO-15 package; higher mounting thermal resistance; not SMT-compatible. | Requires through-hole assembly; incompatible with automated SMT lines; less suitable for high-density PCBs. | Choose only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMBJ47CA and 1.5KE47CA, the 1.5SMC47CAHE3/9AT delivers 2.5× higher surge power handling in an SMT-optimized package with AEC-Q101 validation - making it the preferred choice for production automotive and industrial systems requiring robust, automated, and standards-compliant protection.
Availability
1.5SMC47CAHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O terminals, and telecom line interface circuits requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for 1.5SMC47CAHE3/9AT 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, power efficiency, and automotive qualification.
The 1.5SMC Series targets high-energy transient suppression in demanding environments - engineered for AEC-Q101 compliance, UL 497B recognition, and seamless integration into SMT production lines for automotive, industrial, and telecom end equipment.
FAQ
What does the "CA" suffix mean in 1.5SMC47CAHE3/9AT?
The "CA" suffix in 1.5SMC47CAHE3/9AT indicates a bidirectional configuration - meaning the device provides symmetrical transient voltage suppression in both polarities, with identical breakdown and clamping characteristics for positive and negative surges. This eliminates the need for polarity-aware placement on PCBs and simplifies design for AC-coupled or floating signal paths.
Is 1.5SMC47CAHE3/9AT qualified for automotive applications?
Yes, 1.5SMC47CAHE3/9AT is AEC-Q101 qualified, as confirmed by Vishay's documentation (ordering code HE3 denotes AEC-Q101 compliance). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias, and ESD verification - making it suitable for under-hood and cabin electronics such as ADAS sensors, body control modules, and infotainment power supplies.
What is the maximum clamping voltage of 1.5SMC47CAHE3/9AT at rated surge current?
The maximum clamping voltage (VC) of 1.5SMC47CAHE3/9AT is 64.8 V at 23.1 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions (mounted on 8.0 mm × 8.0 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during worst-case surge events.
How does the SMC package of 1.5SMC47CAHE3/9AT compare thermally to SMA or SMB packages?
The SMC (DO-214AB) package of 1.5SMC47CAHE3/9AT offers lower thermal resistance than SMA (DO-214AC) or SMB (DO-214AA): its typical RθJL is 15 °C/W versus ~25–35 °C/W for smaller packages. This allows higher sustained power dissipation (6.5 W at 50 °C) and better surge energy absorption without thermal runaway - critical for repeated transient exposure.
Does 1.5SMC47CAHE3/9AT meet UL safety certification requirements?
Yes, 1.5SMC47CAHE3/9AT is Underwriters Laboratories (UL) recognized under file E136766 for both unidirectional and bidirectional configurations, complying with UL 497B for signal and power circuit protectors. This certification validates its performance in surge suppression applications for commercial and industrial equipment requiring third-party safety approval.
1.5SMC47CAHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 23.1A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC47CAHE3/9AT FAQ
1.How can I place an order for 1.5SMC47CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47CAHE3/9AT 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 1.5SMC47CAHE3/9AT reliable?
The price and inventory of 1.5SMC47CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC47CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC47CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47CAHE3/9AT?
1.5SMC47CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47CAHE3/9AT 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 1.5SMC47CAHE3/9AT?
For technical support, including 1.5SMC47CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47CAHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC47CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47CAHE3/9AT 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 1.5SMC47CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC47CAHE3/9AT?
All 1.5SMC47CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47CAHE3/9AT, 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 1.5SMC47CAHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC47CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47CAHE3/9AT 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 …
