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Vishay General Semiconductor - Diodes Division TPSMC47AHE3_A/I
- Part No.:
- TPSMC47AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC47AHE3_A/I.pdf
- Description:
- TVS DIODE 40.2VWM 64.8VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,251
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Product details
Overview
TPSMC47AHE3_A/I 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 - deployed to protect automotive sensor signal lines and MOSFET gate drivers against ESD and inductive switching transients.
For engineers reviewing the TPSMC47AHE3_A/I datasheet, TPSMC47AHE3_A/I pinout, TPSMC47AHE3_A/I application, or TPSMC47AHE3_A/I equivalent, key selection criteria include clamping voltage (VC = 64.8 V at IPPM), unidirectional polarity, AEC-Q101 qualification, and MSL Level 1 moisture sensitivity - all critical for high-reliability automotive and industrial PCB designs requiring robust overvoltage immunity.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with optimized junction passivation, enabling stable operation up to TJ = 185 °C and meeting AEC-Q101 stress test requirements. Its unidirectional configuration provides low clamping voltage during positive transients while blocking reverse leakage below 1.0 μA at VWM = 40.2 V.
The device delivers 23.1 A peak pulse current (IPPM) under 10/1000 μs waveform, with fast response time and low incremental surge resistance - ensuring effective suppression of fast-rising transients induced by relay switching or motor commutation in automotive ECUs and industrial PLC I/O modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 44.7 / 47.0 / 49.4 V - ensures reliable conduction onset above system operating voltage (40.2 V stand-off) without false triggering |
| VC @ IPPM | 64.8 V - clamps transient energy to safe levels for downstream 48 V-rated ICs and MOSFETs |
| PPPM | 1500 W - handles high-energy surges from inductive loads per ISO 7637-2 Pulse 1/2a/5a |
| IFSM | 200 A - withstands repetitive 8.3 ms half-sine surge events common in automotive power cycling |
| TJ max. | +185 °C - supports under-hood placement and extended thermal margin in engine control units |
| MSL Level | Level 1 (260 °C peak reflow) - enables standard lead-free SMT assembly without baking or special handling |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including HTGB, HTRB, and temperature cycling |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, cathode indicated by color band. Dimensions: 7.11 mm × 6.22 mm × 2.90 mm (L × W × H).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to protected line (e.g., sensor output); conducts only during negative transients in unidirectional mode |
| Cathode | Current exit terminal during reverse-biased clamping | Connected to ground or low-impedance return path; carries full surge current during positive overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift < ±5 % over 1000 hrs at 150 °C, critical for long-life automotive modules |
| 1500 W peak pulse power (10/1000 μs) | Meets ISO 16750-2 and SAE J1113-11 surge immunity requirements for Class III/IV systems |
| Low clamping voltage (64.8 V) | Provides 20 % lower VC/VBR ratio than legacy SMAJ47A, improving protection margin for 48 V rail interfaces |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive use with zero failures across HTGB (1000 hrs @ 150 °C), HTRB, and TC500 cycles |
| MSL Level 1, 260 °C peak reflow | Eliminates pre-bake requirement and supports high-throughput automated assembly on production lines |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine bay modules exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and chassis ground to shunt transients before they reach sensitive input stages. Use Value: Clamps 10/1000 μs surges to ≤64.8 V while maintaining <1.0 μA leakage at 40.2 V, preserving signal integrity and ADC accuracy. | Use Scenario: Safeguarding digital I/O and feedback lines in variable-frequency drives subjected to inductive kickback from contactor switching and motor regeneration. IC Role / Device Role / Timing Role: Fast-response overvoltage clamp on encoder A/B/Z channels and enable/disable control lines interfacing with microcontrollers. Use Value: Withstands 200 A surge current (8.3 ms) and operates reliably at +185 °C ambient, enabling direct mounting near power stages. |
| 48 V Mild Hybrid Power Systems | Telecom DC Power Interface |
Use Scenario: Transient suppression on 48 V battery rail inputs to DC-DC converters and battery management system (BMS) monitoring circuits in 48 V mild hybrid vehicles. IC Role / Device Role / Timing Role: Primary front-end TVS protecting downstream PMICs and isolated gate drivers from ISO 7637-2 Pulse 5a (load dump) events. Use Value: 1500 W rating and 47 V VBR provide optimal coordination with 58 V OVP thresholds, minimizing unnecessary conduction during normal operation. | Use Scenario: Input-stage surge protection on -48 V telecom power feeds entering remote radio units (RRUs) and baseband processing boards exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, absorbing differential-mode transients on DC supply lines per IEC 61000-4-5 Level 4. Use Value: 64.8 V clamping voltage ensures protected circuitry remains below absolute maximum ratings of -48 V system components during 2 kV/1 kA surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47AHE3/A | Lower PPPM (400 W), smaller SMA package, VC = 77.0 V at same IPPM | Not suitable for ISO 7637-2 Pulse 5a; limited to low-energy signal-line protection | Select when space-constrained layouts require smaller footprint and surge energy is <500 W |
| TPSMC47AHM3_A/I | Halogen-free variant, identical electrical specs and AEC-Q101 qualification, same SMC package | No functional difference; chosen only when halogen-free compliance is mandated by OEM or RoHS+ requirements | Select for automotive Tier 1 programs requiring halogen-free material declaration per IEC 61249-2-21 |
Compared with SMAJ47AHE3/A, TPSMC47AHE3_A/I delivers 275 % higher surge power handling and 12.2 V lower clamping voltage - essential for modern 48 V automotive systems. Versus TPSMC47AHM3_A/I, it shares identical performance but differs only in halogen content, making HE3 the default choice unless halogen-free certification is contractually required.
Availability
TPSMC47AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial motor drive development, and 48 V mild hybrid power system integration requiring stable component supply and AEC-Q101 traceability.
Supply support for TPSMC47AHE3_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, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade solutions.
The TPSMC series is part of Vishay's PAR® (Protection and Regulation) transient suppressor family, engineered specifically for high-energy, high-temperature environments in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the clamping voltage of the TPSMC47AHE3_A/I and how is it measured?
The TPSMC47AHE3_A/I has a maximum clamping voltage (VC) of 64.8 V, measured at its peak pulse current (IPPM = 23.1 A) using a standardized 10/1000 μs double-exponential surge waveform per ANSI/IEEE C62.35. This value is guaranteed across the full operating temperature range and reflects worst-case behavior under surge conditions - critical for verifying that protected ICs remain within their absolute maximum voltage ratings during transient events.
Is the TPSMC47AHE3_A/I AEC-Q101 qualified and what does that mean for automotive use?
Yes, the TPSMC47AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's official documentation and the HE3 suffix designation. This qualification validates the device for automotive applications through rigorous stress testing including high-temperature reverse bias (HTGB), high-temperature operating life (HTOL), and temperature cycling - ensuring reliability in under-hood environments where junction temperatures may reach 185 °C. The TPSMC47AHE3_A/I is approved for use in engine control units, body control modules, and ADAS sensor interfaces.
What is the difference between TPSMC47AHE3_A/I and TPSMC47AHM3_A/I?
The TPSMC47AHE3_A/I and TPSMC47AHM3_A/I share identical electrical specifications, thermal performance, package dimensions, and AEC-Q101 qualification. The sole difference is material composition: HM3 denotes halogen-free molding compound compliant with IEC 61249-2-21, while HE3 is RoHS-compliant but not halogen-free. Both are suitable for automotive use; HM3 is selected only when halogen-free certification is contractually required by Tier 1 customers or regional regulations.
Can the TPSMC47AHE3_A/I be used in bidirectional configurations?
No, the TPSMC47AHE3_A/I is unidirectional only, as explicitly stated in the Vishay datasheet. It conducts current in the reverse direction (cathode to anode) during overvoltage events but blocks forward current beyond its low forward voltage (VF = 3.5 V at 100 A). For bidirectional protection, a separate device such as the SMBJ47CAHE3 must be used - the TPSMC47AHE3_A/I cannot be wired or applied to suppress negative-going transients on bipolar signal lines without external circuitry.
What is the maximum operating temperature and thermal derating behavior of the TPSMC47AHE3_A/I?
The TPSMC47AHE3_A/I has a maximum junction temperature (TJ) of +185 °C and is rated for continuous operation from –65 °C to +185 °C. Its peak pulse power (PPPM) is derated linearly above TA = 25 °C per Figure 2 in the datasheet - for example, at TA = 125 °C, PPPM is reduced to approximately 750 W. This derating curve is essential for thermal design in high-ambient environments like engine compartments, where board-level heat sinking and copper pad area directly impact sustained surge capability.
TPSMC47AHE3_A/I 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/I FAQ
1.How can I place an order for TPSMC47AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC47AHE3_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 TPSMC47AHE3_A/I reliable?
The price and inventory of TPSMC47AHE3_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 TPSMC47AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMC47AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC47AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC47AHE3_A/I?
TPSMC47AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC47AHE3_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 TPSMC47AHE3_A/I?
For technical support, including TPSMC47AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC47AHE3_A/I requirements.
6.How does Aetrix verify that TPSMC47AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMC47AHE3_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 TPSMC47AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMC47AHE3_A/I?
All TPSMC47AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC47AHE3_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 TPSMC47AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMC47AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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