My Inquiry
My Account
Vishay General Semiconductor - Diodes Division 1.5SMC47AHM3/I
- Part No.:
- 1.5SMC47AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC47AHM3/I.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,288
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
1.5SMC47AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMC (DO-214AB) package, designed for high-energy surge protection in power and signal lines. It features a 47 V standoff voltage (VWM), 64.8 V clamping voltage (VC) at 23.1 A peak pulse current (IPPM), and 1500 W peak pulse power capability with a 10/1000 μs waveform - suitable for automotive electronics, industrial power supplies, and sensor interface protection.
For engineers reviewing the 1.5SMC47AHM3/I datasheet, 1.5SMC47AHM3/I pinout, 1.5SMC47AHM3/I application, or 1.5SMC47AHM3/I equivalent, key selection criteria include clamping performance under IEC 61000-4-5 surges, thermal derating above 25 °C, AEC-Q101 qualification status, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The 1.5SMC47AHM3/I operates as a unidirectional avalanche diode, triggering when reverse voltage exceeds its breakdown threshold (VBR = 44.7–49.4 V at 1 mA). Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 μA at 40.2 V).
It delivers 1500 W peak pulse power per 10/1000 μs waveform with minimal clamping overshoot, supported by low incremental surge resistance and fast response time (<1.0 ns). Thermal resistance is 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-leads), enabling reliable operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off) | 40.2 V - maximum continuous reverse operating voltage before conduction begins |
| VBR (Breakdown) | 44.7–49.4 V at 1 mA - guaranteed avalanche initiation range for predictable clamping onset |
| VC (Clamping) | 64.8 V at IPPM = 23.1 A - peak voltage seen by protected circuit during worst-case 10/1000 μs surge |
| PPPM | 1500 W - surge energy handling capacity compliant with IEC 61000-4-5 Level 4 testing |
| ID (Leakage) | <1.0 μA at VWM - negligible standby power loss and no interference with high-impedance signal paths |
| TJ max. | +150 °C - enables use in under-hood automotive environments and thermally constrained PCB layouts |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C reflow peak), matte tin-plated leads solderable per J-STD-002.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to protected line; conducts transient energy to ground when VREV > VBR |
| Anode | Reference / return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Withstands IEC 61000-4-5 4 kV surge tests without degradation when mounted on 8.0 mm × 8.0 mm copper pads |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in harsh environments |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Low profile SMC package | Enables high-density PCB layouts while maintaining thermal performance via optimized leadframe geometry |
| Halogen-free & RoHS-compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp transients before they reach downstream regulators and microcontrollers. Use Value: Limits peak rail voltage to ≤64.8 V during 1500 W surges, preventing latch-up or permanent damage to 5 V/3.3 V logic. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors from ESD and inductive switching noise. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to shunt fast transients (<1 ns rise time) before reaching ADC input stages. Use Value: Sub-μA leakage preserves signal integrity in 24-bit precision measurement systems; low capacitance avoids bandwidth reduction. |
| Telecom DC Power Input Protection | Consumer USB-C Power Delivery Line Protection |
Use Scenario: Safeguarding PoE-powered switches and base stations from lightning-induced surges on 48 V DC inputs. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of DC-DC converters and hot-swap controllers. Use Value: 1500 W rating handles multi-kV induced surges; 150 °C max junction temperature supports sealed outdoor enclosures. |
Use Scenario: Adding robustness to USB-C CC and VBUS lines against accidental 20 V adapter misconnection or ESD events. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS to clamp overvoltage while allowing normal 5–20 V PD negotiation. Use Value: 40.2 V VWM permits full PD 3.0 operation; 64.8 V VC prevents damage to USB-C controller ICs rated to 6.5 V absolute max. |
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 | Lower PPPM (600 W), SMB package (smaller footprint, higher RθJA = 85 °C/W) | Not AEC-Q101 qualified; limited to commercial-grade consumer/industrial use | Select when board space is constrained and surge energy is ≤600 W (e.g., low-power IoT nodes) |
| 1.5KE47A | Through-hole DO-201 package, same VWM/VC specs, but no AEC-Q101 or halogen-free certification | Requires wave soldering; unsuitable for automated SMT lines or automotive production | Choose only for legacy through-hole designs or prototyping where rework tolerance outweighs production efficiency |
Compared with SMBJ47A-E3/52 and 1.5KE47A, the 1.5SMC47AHM3/I uniquely combines AEC-Q101 qualification, halogen-free compliance, 1500 W surge rating, and SMC package suitability for high-volume automotive SMT assembly - making it the preferred choice for Tier 1 supply chain deployments.
Availability
1.5SMC47AHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial power supplies, and telecom infrastructure requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for 1.5SMC47AHM3/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 application-specific performance.
The 1.5SMC Series was engineered for high-energy transient suppression in automotive, industrial, and telecom systems - delivering consistent clamping behavior, AEC-Q101 validation, and robust SMT manufacturability.
FAQ
What is the clamping voltage of the 1.5SMC47AHM3/I under a 10/1000 μs surge?
The 1.5SMC47AHM3/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 is guaranteed across temperature and production lot, ensuring predictable protection margin for downstream 5 V or 3.3 V ICs in the 1.5SMC47AHM3/I design.
Is the 1.5SMC47AHM3/I qualified for automotive applications?
Yes, the 1.5SMC47AHM3/I carries the HM3 suffix, indicating halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. It has passed stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 Rev G - making it suitable for under-hood and cabin ECU applications.
What is the thermal resistance of the 1.5SMC47AHM3/I, and how does it affect layout?
The 1.5SMC47AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-leads (RθJL) of 15 °C/W. To maintain safe operation at full 1500 W surge rating, Vishay specifies mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal - critical for the 1.5SMC47AHM3/I's thermal performance.
How does the 1.5SMC47AHM3/I differ from bidirectional TVS diodes like 1.5SMC47CA?
The 1.5SMC47AHM3/I is unidirectional and intended for DC line protection with polarity-sensitive placement (cathode toward protected line). In contrast, 1.5SMC47CA is bidirectional and used for AC or floating signal lines. The 1.5SMC47AHM3/I offers lower leakage and tighter VBR tolerance than its bidirectional counterpart, optimizing DC rail protection.
What packaging format does the 1.5SMC47AHM3/I ship in?
The 1.5SMC47AHM3/I ships in 13" diameter plastic tape and reel (I suffix), with 3500 units per reel. This format supports high-speed pick-and-place assembly and is compatible with standard SMT feeders - essential for volume production of systems using the 1.5SMC47AHM3/I.
1.5SMC47AHM3/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:
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC47AHM3/I FAQ
1.How can I place an order for 1.5SMC47AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC47AHM3/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 1.5SMC47AHM3/I reliable?
The price and inventory of 1.5SMC47AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC47AHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC47AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC47AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC47AHM3/I?
1.5SMC47AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC47AHM3/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 1.5SMC47AHM3/I?
For technical support, including 1.5SMC47AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC47AHM3/I requirements.
6.How does Aetrix verify that 1.5SMC47AHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC47AHM3/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 1.5SMC47AHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC47AHM3/I?
All 1.5SMC47AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC47AHM3/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 1.5SMC47AHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC47AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC47AHM3/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 …
