My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC47AHE3/9AT
- Part No.:
- 1.5SMC47AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47AHE3/9AT.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:9,392
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC47AHE3/9AT from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode designed for robust overvoltage protection in power and signal lines. It features a 47 V breakdown voltage (VBR = 44.7–49.4 V at 1 mA), 40.2 V stand-off voltage (VWM), 64.8 V maximum clamping voltage (VC) at 23.1 A peak pulse current, and 1500 W peak pulse power capability with a 10/1000 µs waveform - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the 1.5SMC47AHE3/9AT datasheet, 1.5SMC47AHE3/9AT pinout, 1.5SMC47AHE3/9AT application, or 1.5SMC47AHE3/9AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, SMC (DO-214AB) package compatibility, thermal resistance (RθJA = 75 °C/W), and compliance with UL 497B surge protector classification.
Technical Context
This TVS diode operates as a clamping device that diverts transient energy to ground when reverse voltage exceeds VWM (40.2 V), entering avalanche conduction at VBR (min 44.7 V). Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1 µA at VWM).
Designed for high-reliability environments, the 1.5SMC47AHE3/9AT meets AEC-Q101 stress testing requirements and is rated for operation from –65 °C to +150 °C junction temperature. It exhibits fast response time (<1.0 ps), low incremental surge resistance, and MSL Level 1 moisture sensitivity per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 44.7 V / 49.4 V at 1 mA - defines precise avalanche initiation window for repeatable clamping behavior |
| VWM | 40.2 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 64.8 V at 23.1 A - clamped voltage during 1500 W transient, limiting downstream IC stress |
| PPPM | 1500 W - peak pulse power handling with 10/1000 µs waveform, supporting lightning & inductive-switching surges |
| IFSM | 200 A - non-repetitive forward surge rating (8.3 ms half-sine), enabling robust input-stage protection |
| TJ max | +150 °C - extended junction temperature range supports under-hood automotive and industrial ambient conditions |
| RθJA | 75 °C/W - thermal resistance from junction to ambient on standard 8 mm × 8 mm copper pads |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002. Polarity indicated by cathode band; anode and cathode terminals are axially aligned along the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability under thermal stress |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV line-earth, 2 kV line-line) without degradation |
| UL 497B recognized | Approved for use in telecom and industrial surge protection modules requiring safety certification |
| MSL Level 1 | Unlimited floor life at ≤30 °C/85 % RH - compatible with standard SMT reflow without baking |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN transceiver inputs and analog sensor feeds (e.g., pressure, temperature) against load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between signal line and chassis ground to limit transients below IC absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to 5 V or 12 V interface ICs during 12 V battery system transients up to ±100 V. |
Use Scenario: Safeguarding 24 V DC digital input channels in programmable logic controllers exposed to relay coil flyback and field-wiring ESD. IC Role / Device Role / Timing Role: Primary front-end transient suppressor mounted directly at connector entry point before optocoupler or Schmitt trigger input stage. Use Value: Clamps 1 kV/0.5 J transients to <65 V within <1 ns, preserving input logic integrity and reducing false triggering. |
| Telecom Line Card Surge Protection | Consumer Power Adapter Output Clamp |
Use Scenario: Secondary-side protection on Ethernet PHY or RS-485 transceivers in network edge equipment subjected to induced lightning surges. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 40.2 V) placed across differential pair or single-ended line-to-ground. Use Value: Maintains signal integrity during normal operation while suppressing >1.5 kW surges per IEC 61000-4-5, meeting EN 61000-4-5 Class B. |
Use Scenario: Output overvoltage clamp on 48 V DC-DC converters in USB-PD or PoE-powered devices. IC Role / Device Role / Timing Role: Fast-acting unidirectional suppressor between regulated output and ground to prevent downstream component failure during feedback loop faults. Use Value: Limits fault voltage to 64.8 V, protecting 60 V-rated MOSFETs and capacitors without crowbar action or latch-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A-E3/52T | Same VBR/VC, but SMB package (DO-214AA); lower PPPM = 600 W; RθJA = 85 °C/W | Lower power handling limits use to sub-1 kV transients; unsuitable for AEC-Q101 automotive systems | Select only for space-constrained consumer designs where 600 W surge margin suffices and automotive qualification is not required. |
| 1.5KE47A-T | Through-hole DO-15 package; identical electrical specs but higher RθJA (100 °C/W); no AEC-Q101 or UL recognition | Not suitable for automated SMT assembly or high-density PCB layouts; lacks safety certifications for telecom infrastructure | Consider only for legacy through-hole prototyping or cost-sensitive industrial controls where SMT compatibility is unnecessary. |
Compared with SMBJ47A-E3/52T and 1.5KE47A-T, the 1.5SMC47AHE3/9AT delivers superior surge robustness (1500 W vs. 600 W/1500 W), automotive-grade reliability (AEC-Q101), and safety certification (UL 497B), making it the preferred choice for production-grade automotive, industrial, and telecom applications requiring SMT scalability.
Availability
1.5SMC47AHE3/9AT is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, telecom line cards, and consumer power adapter designs requiring stable component supply, AEC-Q101 compliance, and UL-recognized surge protection.
Supply support for 1.5SMC47AHE3/9AT 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, and protection devices with emphasis on reliability, efficiency, and application-specific performance.
The 1.5SMC Series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where consistent clamping, low leakage, and certified safety are mandatory.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC47AHE3/9AT?
The 1.5SMC47AHE3/9AT has a specified breakdown voltage range of 44.7 V to 49.4 V at 1 mA test current, representing a ±5 % tolerance around the nominal 47 V rating. This tight VBR window ensures predictable clamping onset and compatibility with 40.2 V stand-off voltage requirements in 48 V system designs.
Is the 1.5SMC47AHE3/9AT suitable for automotive applications?
Yes, the 1.5SMC47AHE3/9AT is AEC-Q101 qualified and carries the HE3 suffix denoting RoHS-compliant and automotive-grade construction. It passes stress tests including temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D, making it approved for under-hood and chassis-mounted transient protection in vehicles.
What is the maximum clamping voltage of the 1.5SMC47AHE3/9AT under surge conditions?
The 1.5SMC47AHE3/9AT clamps to a maximum of 64.8 V when subjected to its rated 23.1 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is guaranteed across temperature and lifetime, ensuring downstream 60 V-rated components remain within safe operating limits during surge events.
Does the 1.5SMC47AHE3/9AT have UL recognition?
Yes, the 1.5SMC47AHE3/9AT is Underwriters Laboratories (UL) recognized under file E136766 for both unidirectional and bidirectional variants, compliant with UL 497B for surge protective devices. This enables its use in certified telecom, industrial, and building automation equipment requiring safety agency approval.
What packaging format does the 1.5SMC47AHE3/9AT ship in?
The 1.5SMC47AHE3/9AT ships in 13-inch diameter plastic tape and reel packaging (ordering code suffix /9AT), containing 3500 units per reel. The tape conforms to EIA-481-D standards and supports high-speed pick-and-place assembly with verified lead coplanarity and moisture sensitivity level (MSL) 1 rating.
1.5SMC47AHE3/9AT 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:
- 1
- Bidirectional Channels:
- -
- 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)
1.5SMC47AHE3/9AT FAQ
1.How can I place an order for 1.5SMC47AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47AHE3/9AT 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 1.5SMC47AHE3/9AT reliable?
The price and inventory of 1.5SMC47AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC47AHE3/9AT is usually 5 days.
3.What payment methods are accepted for 1.5SMC47AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47AHE3/9AT?
1.5SMC47AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47AHE3/9AT 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 1.5SMC47AHE3/9AT?
For technical support, including 1.5SMC47AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47AHE3/9AT requirements.
6.How does Aetrix verify that 1.5SMC47AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47AHE3/9AT 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 1.5SMC47AHE3/9AT meets industry standards.
7.What is the process for return or replacement of 1.5SMC47AHE3/9AT?
All 1.5SMC47AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47AHE3/9AT, 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 1.5SMC47AHE3/9AT part is unused and in its original packaging.
Return procedure for 1.5SMC47AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47AHE3/9AT 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 …
