My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC47AHE3_A/I
- Part No.:
- 1.5SMC47AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47AHE3_A/I.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:4,159
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC47AHE3_A/I from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on DC power rails and signal lines. It features a 47 V standoff voltage (VWM), 44.7–49.4 V breakdown voltage (VBR) at 1 mA, 64.8 V maximum clamping voltage (VC) at 23.1 A peak pulse current (IPPM), and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive ECUs, industrial PLC I/O modules, and telecom power supplies.
For engineers reviewing the 1.5SMC47AHE3_A/I datasheet, 1.5SMC47AHE3_A/I pinout, 1.5SMC47AHE3_A/I application, or 1.5SMC47AHE3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), SMC package mechanical data, and direct alternatives for ESD/surge protection design-in.
Technical Context
The 1.5SMC47AHE3_A/I operates as a unidirectional clamping device: reverse-biased during normal operation with ≤1.0 µA leakage at 40.2 V, then rapidly avalanches to limit transients above its 44.7–49.4 V breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance for consistent clamping under repetitive 10/1000 µs surges at 0.01% duty cycle.
Thermally, it sustains 150 °C maximum junction temperature with 6.5 W steady-state power dissipation on infinite heatsink at 50 °C ambient; RθJL = 15 °C/W enables effective lead-frame heat conduction. The cathode-band polarity marking and matte tin-plated leads comply with J-STD-002 solderability and JESD22-B102 whisker testing (Class 2).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 40.2 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 48 V systems. |
| VBR (Breakdown Voltage) | 44.7–49.4 V at 1 mA - Tight ±5% tolerance ensures predictable turn-on across production lots and temperature. |
| VC (Clamping Voltage) | 64.8 V at 23.1 A IPPM - Limits transient voltage seen by downstream ICs (e.g., microcontrollers, CAN transceivers) during surge events. |
| PPPM (Peak Pulse Power) | 1500 W (10/1000 µs) - Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out with 8 mm² copper pads. |
| TJ max / TSTG | -65 to +150 °C - Enables deployment in under-hood automotive environments and industrial enclosures without derating. |
| AEC-Q101 Qualified | Yes - Validated for automotive electronics per stress test requirements (HTOL, TC, AC, etc.), indicated by HE3 suffix. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint, compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
SMC (DO-214AB) package: molded epoxy case with matte tin-plated leads; cathode identified by a band at one end. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for rated PPPM performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (unidirectional) | Connected to system ground or low-side return; carries forward surge current up to 200 A (8.3 ms half-sine). |
| Cathode | Reverse-biased terminal (unidirectional) | Connected to protected line (e.g., 48 V rail); avalanche conduction initiates here during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables single-device protection against IEC 61000-4-5 surges up to 4 kV without cascaded TVS stages. |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability - required for engine control, ADAS sensors, and body electronics. |
| Glass passivated junction | Ensures long-term VBR stability and low leakage drift across temperature (-65 to +150 °C). |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements. |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (e.g., inductive switch-off in solenoid drivers). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery-fed ECUs from load dump and alternator transients in passenger vehicles and commercial trucks. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC-DC converter input stage. Use Value: Clamps 120 V load dump spikes to ≤64.8 V, preventing damage to upstream PMICs and MCU power domains. |
Use Scenario: Safeguarding analog sensor inputs (e.g., pressure, temperature) in PLC analog I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Low-capacitance TVS on 24 V supply line feeding op-amp signal conditioning circuitry. Use Value: Limits transient energy before it couples into precision ADC front-ends, preserving measurement integrity. |
| Telecom DC Power Input Protection | Motor Drive Control Signal Protection |
Use Scenario: Securing -48 V DC power inputs of base station radios and optical line terminals against lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on telecom rectifier output, upstream of bulk capacitors and POL converters. Use Value: Absorbs 1500 W pulses without degradation, maintaining uptime in outdoor infrastructure with minimal maintenance. |
Use Scenario: Shielding gate driver enable/disable signals in BLDC motor inverters from cross-talk and switching noise. IC Role / Device Role / Timing Role: Unidirectional TVS on isolated logic-level control lines between MCU and isolated gate driver ICs. Use Value: Prevents false triggering or latch-up in gate drivers during high dV/dt events in adjacent power stages. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A-E3/52 | Same VWM (40.2 V), lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 110 °C/W) | Suitable for space-constrained consumer or non-automotive industrial designs with lower surge exposure. | Select when board area is critical and IEC 61000-4-5 Level 3 (2 kV) suffices; not AEC-Q101 qualified. |
| 1.5KE47A | Same VWM/VBR/VC specs, axial-lead DO-201 package, no AEC-Q101 qualification, higher mounting thermal resistance | Used in legacy through-hole designs or prototyping where SMT assembly is unavailable. | Choose only for manual assembly or repair scenarios; lacks SMC's automated placement compatibility and MSL Level 1 rating. |
Compared with SMBJ47A-E3/52 and 1.5KE47A, the 1.5SMC47AHE3_A/I uniquely combines AEC-Q101 qualification, 1500 W surge capability in SMC form factor, and MSL Level 1 process compatibility - making it the preferred choice for volume automotive and high-reliability industrial SMT production.
Availability
1.5SMC47AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU designs, industrial PLC I/O modules, telecom power supplies, and motor drive control circuits requiring stable component supply with full traceability and lifecycle continuity.
Supply support for 1.5SMC47AHE3_A/I 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and ruggedized performance.
The 1.5SMC Series targets high-energy transient suppression in harsh environments - engineered for automotive, industrial, and telecom applications where robustness, AEC-Q101 compliance, and repeatable clamping behavior are mandatory.
FAQ
What is the clamping voltage of the 1.5SMC47AHE3_A/I at its rated peak pulse current?
The 1.5SMC47AHE3_A/I has a maximum clamping voltage (VC) of 64.8 V at 23.1 A peak pulse current (IPPM), measured with a 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during surge events and is guaranteed across the full operating temperature range (-65 to +150 °C). The 1.5SMC47AHE3_A/I achieves this clamping performance while maintaining low incremental surge resistance for minimal overshoot.
Is the 1.5SMC47AHE3_A/I qualified for automotive applications?
Yes, the 1.5SMC47AHE3_A/I is AEC-Q101 qualified, as confirmed by the "HE3" suffix in its part number and documented in Vishay's 1.5SMC Series specification (Document Number: 88303, Revision: 09-Mar-2026). This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - making the 1.5SMC47AHE3_A/I suitable for engine control units, body electronics, and ADAS subsystems.
What package type does the 1.5SMC47AHE3_A/I use, and what are its key mechanical dimensions?
The 1.5SMC47AHE3_A/I uses the SMC (DO-214AB) surface-mount package, measuring 7.75 mm × 6.22 mm × 2.62 mm (length × width × height) with a cathode band marking. Its outline conforms to JEDEC DO-214AB standards, and recommended mounting uses 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve full 1500 W pulse rating. The 1.5SMC47AHE3_A/I's matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2.
How does the 1.5SMC47AHE3_A/I differ from bidirectional TVS diodes like 1.5SMC47CA?
The 1.5SMC47AHE3_A/I is unidirectional and functions only in reverse bias - ideal for DC power line protection where polarity is fixed. In contrast, 1.5SMC47CA is bidirectional and symmetrical, suited for AC lines or data buses with undefined polarity. The 1.5SMC47AHE3_A/I exhibits forward conduction (VF ≈ 3.5 V at 100 A), while 1.5SMC47CA blocks in both directions until either polarity exceeds its breakdown threshold. Their VBR and VC values differ accordingly due to structural asymmetry.
What is the maximum steady-state power dissipation for the 1.5SMC47AHE3_A/I?
The 1.5SMC47AHE3_A/I has a maximum steady-state power dissipation (PD) of 6.5 W when mounted on an infinite heatsink at TA = 50 °C. Its thermal resistance from junction to ambient (RθJA) is 75 °C/W, and from junction to leads (RθJL) is 15 °C/W. These values allow accurate thermal modeling in PCB layouts - for example, at 25 °C ambient, the device can dissipate ~5.2 W continuously without exceeding 150 °C junction temperature. Derating applies above 50 °C ambient per Figure 2 in the datasheet.
1.5SMC47AHE3_A/I 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:
- Active
- 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_A/I FAQ
1.How can I place an order for 1.5SMC47AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47AHE3_A/I 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_A/I reliable?
The price and inventory of 1.5SMC47AHE3_A/I 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_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC47AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47AHE3_A/I?
1.5SMC47AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47AHE3_A/I 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_A/I?
For technical support, including 1.5SMC47AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47AHE3_A/I requirements.
6.How does Aetrix verify that 1.5SMC47AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47AHE3_A/I 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_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC47AHE3_A/I?
All 1.5SMC47AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47AHE3_A/I, 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_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC47AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47AHE3_A/I 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 …
