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Vishay General Semiconductor - Diodes Division TPSMC47AHE3/9AT
- Part No.:
- TPSMC47AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC47AHE3/9AT.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,283
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Product details
Overview
TPSMC47AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 47 V breakdown voltage (VBR = 44.7–49.4 V), 1500 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature - designed to protect MOSFETs, ICs, and sensor signal lines in automotive power electronics against inductive switching transients.
For engineers reviewing the TPSMC47AHE3/9AT datasheet, TPSMC47AHE3/9AT pinout, TPSMC47AHE3/9AT application, or TPSMC47AHE3/9AT equivalent, key selection criteria include clamping voltage (VC = 64.8 V at IPPM), unidirectional polarity, AEC-Q101 qualification, and thermal stability up to +185 °C in high-reliability automotive and industrial environments.
Technical Context
This TVS diode operates as a voltage-clamping protection device triggered by reverse-biased avalanche breakdown. Its passivated anisotropic rectifier structure enables low incremental surge resistance and fast response time (<1 ns), with clamping performance validated under 10/1000 µs surge waveforms per ANSI/IEEE C62.35.
Designed for high-temperature reliability, it sustains continuous operation from –65 °C to +185 °C junction temperature, meets MSL Level 1 per J-STD-020, and supports lead-free reflow soldering up to 260 °C peak - critical for under-hood automotive modules and industrial motor drives where thermal derating must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 44.7 V / 47.0 V / 49.4 V - precise breakdown threshold ensures reliable triggering before downstream IC damage |
| VWM | 40.2 V - maximum working voltage; allows safe operation below breakdown during normal system operation |
| VC @ IPPM | 64.8 V - clamping voltage limits transient energy delivered to protected circuitry |
| PPPM | 1500 W - peak pulse power handling capability for 10/1000 µs waveform per IEC 61000-4-5 |
| IFSM | 200 A - surge current rating for 8.3 ms half-sine wave, supporting high-energy load dump events |
| TJ max. | +185 °C - enables placement near heat sources (e.g., power MOSFETs, DC-DC converters) without derating |
| Polarity | Unidirectional - protects only against reverse-polarity transients; requires correct orientation in series with protected line |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to ground or lower-potential node in unidirectional TVS configuration |
| Cathode | Current exit terminal during forward conduction; avalanche terminal during reverse surge | Connected to protected line (e.g., 48 V rail, CAN-H, sensor output); clamps to VC when overvoltage occurs |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock |
| 185 °C junction rating | Enables direct mounting on high-power PCB sections without thermal isolation or layout constraints |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 surge events in 12 V/48 V systems |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes voltage overshoot across protected devices, reducing stress on gate oxides and ESD structures |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking, simplifying SMT manufacturing |
Applications
| Automotive Power Distribution | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 48 V battery management system (BMS) input stages from load dump transients during alternator regulation failure. IC Role / Device Role / Timing Role: Unidirectional TVS placed between main bus and DC-DC converter input to clamp surges above 40.2 V. Use Value: Limits clamped voltage to 64.8 V, preventing overvoltage damage to 65 V-rated input capacitors and controller ICs. | Use Scenario: Shielding analog output lines of pressure sensors in hydraulic control units from EMI-induced spikes. IC Role / Device Role / Timing Role: TVS connected between sensor output and ground to absorb fast-rising transients from solenoid switching noise. Use Value: Sub-1 ns response time and 64.8 V clamping ensure signal integrity remains intact for 12-bit ADC sampling accuracy. |
| Onboard Charger (OBC) Input Stage | Telecom DC Power Feeds |
Use Scenario: Safeguarding AC/DC front-end rectifiers and PFC controllers in EV onboard chargers exposed to grid surges. IC Role / Device Role / Timing Role: Mounted across bulk capacitor input to suppress differential-mode transients exceeding 40.2 V. Use Value: 1500 W pulse rating handles repeated 10/1000 µs surges per IEC 61000-4-5 Level 4 without degradation. | Use Scenario: Protecting -48 V telecom power distribution boards from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Unidirectional TVS placed on each feed line to ground, leveraging 40.2 V stand-off for nominal -48 V operation. Use Value: 185 °C rating supports operation in sealed, high-ambient telecom cabinets without thermal throttling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ47A-E3/52 (Vishay) | Same VBR range (44.7–49.4 V), but SMB package (DO-214AA); lower PPPM = 600 W | Limited to lower-energy transients; unsuitable for load dump or high-current surge events | Select when board space is constrained and surge energy is ≤600 W (e.g., low-power sensor nodes) |
| 1.5KE47A (ON Semiconductor) | Through-hole DO-201 package; same VBR, PPPM = 1500 W, but TJ max. = 175 °C and no AEC-Q101 qualification | Not automotive-qualified; requires wave soldering or manual assembly; less suitable for automated SMT lines | Select for cost-sensitive industrial designs where AEC-Q101 and 185 °C operation are not required |
Compared with SMBJ47A-E3/52 and 1.5KE47A, TPSMC47AHE3/9AT uniquely combines 1500 W surge capability, AEC-Q101 qualification, and 185 °C junction rating in an SMC package - enabling drop-in use in automotive power modules where thermal margin and reliability certification are mandatory.
Availability
TPSMC47AHE3/9AT is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface protection, onboard charger input stages, and telecom DC power feeds requiring stable component supply and long-term lifecycle support.
Supply support for TPSMC47AHE3/9AT 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 high-reliability, high-temperature, and automotive-qualified components.
The TPSMC47AHE3/9AT belongs to Vishay's PAR® (Protection and Regulation) family of transient voltage suppressors, engineered specifically for robust overvoltage protection in harsh automotive and industrial environments where thermal stability and AEC-Q101 compliance are non-negotiable.
FAQ
What is the breakdown voltage tolerance for TPSMC47AHE3/9AT?
The TPSMC47AHE3/9AT has a specified breakdown voltage range of 44.7 V (minimum) to 49.4 V (maximum) at test current IT = 1 mA, with a typical value of 47.0 V. This ±5% tolerance ensures consistent clamping behavior across production lots and supports reliable design margins for 48 V system protection.
Is TPSMC47AHE3/9AT suitable for bidirectional transient suppression?
No, TPSMC47AHE3/9AT is unidirectional only, as confirmed in the Vishay datasheet. It protects against reverse-polarity transients on a single polarity line (e.g., positive rail to ground). For bidirectional protection, two devices in series opposition or a dedicated bidirectional TVS such as TPSMC47CAHE3/9AT would be required.
Does TPSMC47AHE3/9AT meet automotive qualification standards?
Yes, TPSMC47AHE3/9AT carries the HE3 suffix, indicating RoHS compliance and full AEC-Q101 qualification per the Vishay ordering nomenclature. This includes stress testing for temperature cycling, high-temperature operating life, and mechanical shock - validating its suitability for under-hood and powertrain applications.
What is the clamping voltage of TPSMC47AHE3/9AT at its rated peak pulse current?
The clamping voltage VC of TPSMC47AHE3/9AT is 64.8 V at IPPM = 23.1 A (10/1000 µs waveform), as specified in the Electrical Characteristics table. This value defines the maximum voltage seen by downstream circuitry during a full-rated surge event.
Can TPSMC47AHE3/9AT be used in place of TPSMC47AHE3/B?
Yes - the "/9AT" suffix denotes tape-and-reel packaging per Vishay's standard ordering convention (7" reel, 850 pcs), while "/B" indicates revision code "B". Both share identical electrical, thermal, and mechanical specifications; the /9AT variant is fully compatible for design-in and production use where reel packaging is required.
TPSMC47AHE3/9AT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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 ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
TPSMC47AHE3/9AT FAQ
1.How can I place an order for TPSMC47AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC47AHE3/9AT 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 TPSMC47AHE3/9AT reliable?
The price and inventory of TPSMC47AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC47AHE3/9AT is usually 5 days.
3.What payment methods are accepted for TPSMC47AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC47AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC47AHE3/9AT?
TPSMC47AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC47AHE3/9AT 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 TPSMC47AHE3/9AT?
For technical support, including TPSMC47AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC47AHE3/9AT requirements.
6.How does Aetrix verify that TPSMC47AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All TPSMC47AHE3/9AT 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 TPSMC47AHE3/9AT meets industry standards.
7.What is the process for return or replacement of TPSMC47AHE3/9AT?
All TPSMC47AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC47AHE3/9AT, 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 TPSMC47AHE3/9AT part is unused and in its original packaging.
Return procedure for TPSMC47AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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