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Vishay General Semiconductor - Diodes Division TPSMC47AHE3_A/H
- Part No.:
- TPSMC47AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC47AHE3_A/H.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,247
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Product details
Overview
TPSMC47AHE3_A/H 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. It clamps transients to 64.8 V at 23.1 A peak surge current and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the TPSMC47AHE3_A/H datasheet, TPSMC47AHE3_A/H pinout, TPSMC47AHE3_A/H application, or TPSMC47AHE3_A/H equivalent, key selection criteria include unidirectional polarity, 40.2 V stand-off voltage (VWM), low 1.0 μA reverse leakage at VWM, MSL Level 1 rating, and compatibility with high-reliability automotive PCB layouts requiring RoHS-compliant, whisker-tested matte tin terminations.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and fast response to ESD and lightning-induced transients. Its junction design enables reliable operation up to TJ = 185 °C and meets AEC-Q101 stress test requirements for automotive under-hood applications.
The device delivers 1500 W peak pulse power per 10/1000 μs waveform with low incremental surge resistance and excellent clamping ratio (VC/VBR ≈ 1.38). It is specified for mounting on 8.0 mm × 8.0 mm copper pads and exhibits a typical VBR temperature coefficient of +0.092 %/°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 44.7 V / 47.0 V / 49.4 V - Ensures precise overvoltage triggering above 40.2 V system operating rail without false trips |
| VWM | 40.2 V - Maximum continuous reverse working voltage compatible with 36 V nominal automotive systems |
| PPPM | 1500 W - Withstands high-energy transients from load dump or inductive switching in engine control units |
| IPPM | 23.1 A - Peak clamping current at which VC = 64.8 V; defines safe energy absorption limit under standardized surge |
| TJ max. | +185 °C - Enables placement near heat sources (e.g., power converters) without derating in automotive modules |
| Polarity | Unidirectional - Protects DC rails only; requires correct cathode orientation toward protected circuit's positive side |
| Package | SMC (DO-214AB) - Industry-standard 2-pin surface-mount outline with 8.13 mm body length and 3.20 mm width |
Pinout & Package
TPSMC47AHE3_A/H is housed in an SMC (DO-214AB) plastic package with matte tin-plated leads. The cathode is marked by a color band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VAK exceeds VBR |
| Anode | Reference node | Typically tied to system ground or low-side return path; completes clamping loop during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per JESD22 standards |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns or baking requirements |
| 185 °C junction rating | Supports under-hood deployment in powertrain and ADAS modules where ambient temperatures exceed 125 °C |
| Low IR = 1.0 μA at VWM | Minimizes standby power loss and avoids interference with high-impedance sensor bias networks |
| Fast response time | Clamps within <1 ns - critical for protecting high-speed CAN, LIN, and sensor interface ICs from EFT bursts |
Applications
| Automotive Power Distribution | Industrial Motor Drive Protection |
|---|---|
|
Use Scenario: Suppressing load-dump transients (ISO 7637-2 Pulse 5a) on 12 V/24 V battery-fed ECUs in engine control, lighting, and HVAC modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed across input filter capacitor, upstream of DC/DC converter input stage. Use Value: Limits voltage excursion to ≤64.8 V during 1500 W surges, preventing damage to downstream PMICs and microcontrollers rated for 40 V absolute maximum. |
Use Scenario: Protecting gate drivers and current-sense amplifiers in variable-frequency drives exposed to inductive kickback from 3-phase motors. IC Role / Device Role / Timing Role: Parallel-connected TVS on motor phase outputs and DC bus rails to absorb commutation spikes. Use Value: Clamps 23.1 A transients within nanoseconds, reducing dv/dt stress on SiC MOSFETs and preserving isolation barrier integrity. |
| Telecom Power Supply Input | Automotive Sensor Interface Protection |
|
Use Scenario: Safeguarding AC/DC front-end rectifiers and PFC controllers in base station power supplies against lightning-induced surges on primary-side inputs. IC Role / Device Role / Timing Role: Secondary-level TVS after MOVs, providing precise clamping for sensitive control ICs and feedback optocouplers. Use Value: Delivers 1500 W pulse handling with 64.8 V clamping, enabling tighter margin design versus generic 600 W TVS diodes. |
Use Scenario: Shielding analog front-ends of radar, camera, and ultrasonic sensors from ESD (IEC 61000-4-2) and cable discharge events in vehicle harnesses. IC Role / Device Role / Timing Role: Localized TVS at connector entry point, placed before signal conditioning op-amps and ADC inputs. Use Value: Low 1.0 μA leakage at 40.2 V ensures no DC offset error in millivolt-level sensor signals; 185 °C rating supports placement near hot connectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47A-E3/57T | Same VBR range (44.7–49.4 V), but lower PPPM = 400 W; SMA package (smaller thermal mass) | Not suitable for automotive load-dump; limited to low-energy ESD and EFT in consumer interfaces | Select only for space-constrained, non-automotive designs where 1500 W capability is unnecessary |
| TPSMC47CAHE3_A/H | Bi-directional variant with identical VBR, PPPM, and package; adds symmetric clamping for AC-coupled lines | Required for differential buses (e.g., RS-485, CAN FD) or AC signal paths; higher capacitance than unidirectional version | Choose when protecting bidirectional communication lines; avoid if only DC rail protection is needed due to added cost and capacitance |
Compared with SMAJ47A-E3/57T and TPSMC47CAHE3_A/H, the TPSMC47AHE3_A/H provides optimal balance of high-power surge handling, automotive qualification, and unidirectional efficiency-making it the preferred choice for 12 V/24 V DC power rail protection where size, reliability, and clamping precision are jointly critical.
Availability
TPSMC47AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial motor drive inverters, and telecom power supply inputs requiring stable component supply, AEC-Q101 compliance, and high-temperature operational continuity.
Supply support for TPSMC47AHE3_A/H 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 high-reliability diodes, MOSFETs, and passive components for demanding industrial and automotive environments.
The TPSMC series was engineered specifically for robust transient suppression in harsh-temperature automotive and industrial settings, emphasizing AEC-Q101 qualification, 185 °C operation, and high-power 10/1000 μs surge resilience.
FAQ
What is the maximum clamping voltage of the TPSMC47AHE3_A/H at its rated peak pulse current?
The TPSMC47AHE3_A/H has a maximum clamping voltage (VC) of 64.8 V at its rated peak pulse current (IPPM) of 23.1 A, measured using the standardized 10/1000 μs waveform. This value ensures predictable overvoltage limiting during surge events and is verified per ANSI/IEEE C62.35. The TPSMC47AHE3_A/H maintains this clamping performance across its full operating temperature range.
Is the TPSMC47AHE3_A/H suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the TPSMC47AHE3_A/H is explicitly AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HE3" and documentation (Document Number: 88407, Revision: 19-Jan-2024). It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD, making it approved for use in engine control, ADAS, and body electronics modules where automotive-grade reliability is mandatory.
What is the stand-off voltage (VWM) of the TPSMC47AHE3_A/H, and why does it matter?
The TPSMC47AHE3_A/H has a stand-off voltage (VWM) of 40.2 V - the maximum continuous reverse voltage it can block without significant leakage. This parameter ensures compatibility with 36 V nominal automotive systems and prevents false triggering during normal operation. At VWM, reverse leakage remains ≤1.0 μA, minimizing power loss and avoiding interference with high-impedance circuits.
Does the TPSMC47AHE3_A/H have moisture sensitivity level (MSL) rating, and what does it mean for assembly?
The TPSMC47AHE3_A/H is rated MSL Level 1 per J-STD-020, with a maximum lead-free reflow peak temperature of 260 °C. This means it can be placed directly into standard SMT reflow ovens without pre-baking or special handling - significantly simplifying manufacturing flow and eliminating moisture-related popcorning risks during assembly of automotive and industrial PCBs.
How does the TPSMC47AHE3_A/H differ from the bi-directional TPSMC47CAHE3_A/H variant?
The TPSMC47AHE3_A/H is unidirectional, while the TPSMC47CAHE3_A/H is bi-directional - meaning the latter clamps both positive and negative transients, whereas the former protects only positive-going surges relative to ground. Both share identical VBR, PPPM, and SMC packaging, but the bi-directional version exhibits higher junction capacitance and is intended for AC or differential signal lines like CAN or RS-485.
TPSMC47AHE3_A/H 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_A/H FAQ
1.How can I place an order for TPSMC47AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC47AHE3_A/H 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_A/H reliable?
The price and inventory of TPSMC47AHE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC47AHE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMC47AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC47AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC47AHE3_A/H?
TPSMC47AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC47AHE3_A/H 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_A/H?
For technical support, including TPSMC47AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC47AHE3_A/H requirements.
6.How does Aetrix verify that TPSMC47AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMC47AHE3_A/H 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_A/H meets industry standards.
7.What is the process for return or replacement of TPSMC47AHE3_A/H?
All TPSMC47AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC47AHE3_A/H, 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_A/H part is unused and in its original packaging.
Return procedure for TPSMC47AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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