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Vishay General Semiconductor - Diodes Division TPSMC43AHE3_B/I
- Part No.:
- TPSMC43AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC43AHE3_B/I.pdf
- Description:
- TVS DIODE 36.8VWM 59.3VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,457
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Product details
Overview
TPSMC43AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge clamping on power and signal lines. It features a 43 V breakdown voltage (VBR = 40.9–45.2 V at 1 mA), 36.8 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 µs), 25.3 V clamping voltage at 20 A IPPM, and operates up to +185 °C junction temperature - ideal for automotive power rail protection.
For engineers reviewing the TPSMC43AHE3_B/I datasheet, TPSMC43AHE3_B/I pinout, TPSMC43AHE3_B/I application, or TPSMC43AHE3_B/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, 185 °C TJ max, and RoHS-compliant matte tin terminations - all critical for automotive-grade ESD/surge resilience in harsh environments.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge stress and elevated temperatures. Its 10/1000 µs waveform response supports IEC 61000-4-5 Level 4 compliance when properly mounted on 8.0 mm × 8.0 mm copper pads.
The device exhibits low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of inductive switching transients and lightning-induced surges. Its VBR temperature coefficient (αT = 0.092 %/°C) ensures predictable voltage shift across -65 °C to +185 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 40.9–45.2 V at 1 mA - defines minimum clamping onset threshold under DC stress |
| Stand-off Voltage VWM | 36.8 V - maximum continuous reverse voltage before leakage exceeds 1 µA |
| Clamping Voltage VC | 25.3 V at 20 A IPPM - actual voltage seen by protected circuit during worst-case surge |
| Peak Pulse Power PPPM | 1500 W (10/1000 µs) - energy-handling capacity for transient suppression per IEC 61000-4-5 |
| Junction Temperature Range | -65 °C to +185 °C - enables use in under-hood automotive, industrial motor drives, and high-temp PCBs |
| AEC-Q101 Qualified | Yes - validated for automotive reliability including temperature cycling, HTRB, and ESD testing |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" body length and cathode band marking |
Pinout & Package
TPSMC43AHE3_B/I is housed in the SMC (DO-214AB) package: a surface-mount, unidirectional diode with molded epoxy case, matte tin-plated leads, and cathode indicated by a color band. Dimensions: 7.11 mm × 6.60 mm × 3.20 mm (L × W × H), MSL Level 1, LF peak 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal under forward bias | Connected to lower-potential side (e.g., ground or return path) in unidirectional TVS configuration |
| Cathode | Current exit terminal under forward bias; clamping node under reverse surge | Connected to protected line (e.g., 12 V rail or CAN bus); absorbs surge energy into ground via anode |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR and low leakage (<1 µA at VWM) over lifetime and temperature |
| TJ = 185 °C capability | Supports placement near heat sources (e.g., power MOSFETs, engine control units) without derating |
| 1500 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 surge immunity requirements for automotive and industrial equipment |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving system-level robustness |
| MSL Level 1, 260 °C lead-free reflow compatible | Eliminates moisture sensitivity concerns and supports standard SMT assembly without baking |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs against load dump and alternator transients per ISO 7637-2. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp surges above 36.8 V. Use Value: Withstands 1500 W pulses and operates up to 185 °C, ensuring reliability in engine bay environments. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground to limit voltage excursions without distorting signal integrity. Use Value: 25.3 V clamping at 20 A and <1 ns response preserve microvolt-level signal fidelity in precision measurement systems. |
| Telecom DC Power Input Protection | Consumer Device USB/DC Jack Surge Suppression |
|
Use Scenario: Safeguarding PoE-powered network switches and base stations from induced lightning surges on 48 V DC inputs. IC Role / Device Role / Timing Role: Primary surge arrestor on input stage, coordinated with upstream fuses and downstream regulators. Use Value: 1500 W rating and AEC-Q101 qualification provide proven field reliability in outdoor telecom infrastructure. |
Use Scenario: Preventing damage to charging ICs and USB controllers from hot-plug transients and human-body-model ESD. IC Role / Device Role / Timing Role: Standoff-rated TVS on VBUS line, selected for low leakage (<1 µA) to avoid standby current drain. Use Value: RoHS-compliant matte tin terminations ensure solder joint integrity and long-term corrosion resistance in consumer assemblies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43AHE3/A | Same VBR range (40.9–45.2 V), but SMB package (smaller footprint, 600 W PPPM) | Limited to lower-energy surges; unsuitable for ISO 7637-2 load dump where 1500 W is required | Select only if board space is constrained and surge threat level is ≤600 W (e.g., secondary signal lines) |
| TPSMC43AHM3_B/I | Identical electrical specs and package; halogen-free molding compound instead of standard RoHS | Required for strict environmental compliance (e.g., EU automotive Tier 1 supply chains mandating halogen-free) | Choose when halogen-free certification is contractually mandated; otherwise TPSMC43AHE3_B/I satisfies standard AEC-Q101 needs |
Compared with SMBJ43AHE3/A and TPSMC43AHM3_B/I, the TPSMC43AHE3_B/I uniquely balances 1500 W surge capacity, AEC-Q101 qualification, and standard RoHS compliance in the SMC package - making it the default choice for primary automotive power rail protection where both energy handling and reliability are non-negotiable.
Availability
TPSMC43AHE3_B/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply, AEC-Q101 validation, and high-temperature operational continuity.
Supply support for TPSMC43AHE3_B/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 reliability, thermal performance, and automotive qualification.
The TPSMC43AHE3_B/I belongs to Vishay's PAR® series of high-power TVS diodes, engineered specifically for demanding transient suppression in automotive, industrial, and telecom power systems where sustained high-temperature operation and surge immunity are critical.
FAQ
What is the clamping voltage of the TPSMC43AHE3_B/I at its rated peak pulse current?
The TPSMC43AHE3_B/I has a maximum clamping voltage (VC) of 25.3 V when subjected to its rated peak pulse current of 20 A using the 10/1000 µs waveform. This value is measured per test condition specified in the Vishay datasheet (Document Number: 88407) and reflects the actual voltage imposed on the protected circuit during a standardized surge event. The low VC relative to VBR confirms strong clamping efficiency essential for safeguarding downstream ICs.
Is the TPSMC43AHE3_B/I qualified for automotive applications?
Yes, the TPSMC43AHE3_B/I is AEC-Q101 qualified, as confirmed in the Vishay datasheet (Revision: 19-Jan-2024). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, validating its suitability for automotive powertrain, body electronics, and ADAS modules. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101-qualified variants per Vishay's ordering nomenclature.
What does the "B/I" suffix mean in TPSMC43AHE3_B/I?
The "B/I" suffix in TPSMC43AHE3_B/I indicates two attributes: "B" is the revision code denoting the specific manufacturing revision per Vishay's documentation, and "I" specifies the packaging format - 13-inch diameter plastic tape and reel containing 3500 units. This differs from "H"-suffixed versions, which use 7-inch reels with 850 units. Both share identical electrical and thermal specifications.
Can the TPSMC43AHE3_B/I be used in bidirectional configurations?
No, the TPSMC43AHE3_B/I is unidirectional only, as explicitly stated in the Vishay datasheet under FEATURES. It must be oriented with the cathode toward the protected line and anode to ground. For bidirectional protection (e.g., AC lines or differential buses), a separate bidirectional TVS such as the SMAJ43CA or a back-to-back unidirectional pair would be required - the TPSMC43AHE3_B/I itself does not support symmetrical clamping.
What is the maximum operating junction temperature for the TPSMC43AHE3_B/I?
The TPSMC43AHE3_B/I has a maximum operating junction temperature (TJmax) of +185 °C, verified per the Absolute Maximum Ratings table in the Vishay datasheet. This rating enables deployment in high-ambient environments such as engine compartments or industrial motor drive enclosures. Derating curves in Figure 2 show how peak pulse power decreases linearly above 25 °C ambient, preserving safe operation within this thermal envelope.
TPSMC43AHE3_B/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 25.3A
- 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 (SMC)
TPSMC43AHE3_B/I FAQ
1.How can I place an order for TPSMC43AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC43AHE3_B/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 TPSMC43AHE3_B/I reliable?
The price and inventory of TPSMC43AHE3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC43AHE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMC43AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC43AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC43AHE3_B/I?
TPSMC43AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC43AHE3_B/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 TPSMC43AHE3_B/I?
For technical support, including TPSMC43AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC43AHE3_B/I requirements.
6.How does Aetrix verify that TPSMC43AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMC43AHE3_B/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 TPSMC43AHE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMC43AHE3_B/I?
All TPSMC43AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC43AHE3_B/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 TPSMC43AHE3_B/I part is unused and in its original packaging.
Return procedure for TPSMC43AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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