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Vishay General Semiconductor - Diodes Division TPSMC39AHE3/9AT
- Part No.:
- TPSMC39AHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC39AHE3/9AT.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,809
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Product details
Overview
TPSMC39AHE3/9AT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for clamping voltage transients on power and signal lines. It features 39 V breakdown voltage (VBR = 37.1–41.0 V at 1 mA), 33.3 V stand-off voltage (VWM), 1500 W peak pulse power (10/1000 μs), 53.9 V clamping voltage at 27.8 A (IPPM), and operates up to +185 °C junction temperature - used in automotive sensor protection and industrial power rail surge suppression.
For engineers reviewing the TPSMC39AHE3/9AT datasheet, TPSMC39AHE3/9AT pinout, TPSMC39AHE3/9AT application, or TPSMC39AHE3/9AT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, SMC package thermal performance, clamping ratio (VC/VWM ≈ 1.62), and compliance with J-STD-020 MSL Level 1 reflow profile.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its junction design enables reliable operation at TJ = 185 °C and meets AEC-Q101 stress test requirements for automotive under-hood applications.
The device delivers fast response time (<1 ns) and excellent clamping capability with VC = 53.9 V at IPPM = 27.8 A (10/1000 μs waveform), while maintaining low leakage (IR ≤ 1.0 μA at VWM = 33.3 V, TA = 25 °C) and robust surge handling (IFSM = 200 A, 8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V at 1 mA - defines precise voltage threshold where avalanche conduction begins reliably |
| VWM | 33.3 V - maximum continuous reverse voltage before significant leakage; sets operating margin below VBR |
| VC @ IPPM | 53.9 V at 27.8 A - clamped voltage during 1500 W transient; determines protected circuit's peak stress level |
| PPPM | 1500 W (10/1000 μs) - peak surge energy absorption capacity without failure under standardized waveform |
| TJ max. | +185 °C - enables placement near hot components (e.g., power MOSFETs, engine control units) without derating |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation in PCB layout |
| Package | SMC (DO-214AB) - industry-standard 2-pin surface-mount outline with 8.0 mm × 8.0 mm copper pad thermal requirement |
Pinout & Package
TPSMC39AHE3/9AT is housed in an SMC (DO-214AB) package with two terminals: cathode marked by a color band, anode unmarked. The package supports automated placement and reflow soldering per J-STD-020 MSL Level 1 (peak 260 °C). Thermal performance requires 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads at each terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including HTRB, HTGB, and temperature cycling per AEC standard |
| Junction passivation | Optimized anisotropic rectifier structure ensures stable VBR drift < ±5 % over lifetime at 150 °C |
| MSL Level 1 | Zero floor life limitation; supports standard reflow profiles up to 260 °C peak without baking |
| Low clamping ratio | VC/VWM = 1.62 - minimizes overvoltage exposure to downstream ICs during surge events |
| High IFSM | 200 A (8.3 ms half-sine) - withstands repetitive load dump or inductive kick without bond wire failure |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC Digital Input Module |
|---|---|
Use Scenario: Protects microcontroller GPIO and CAN transceiver power rails from load dump and alternator ripple in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between VBAT and ground, triggered within nanoseconds of overvoltage onset. Use Value: Limits transient voltage to ≤53.9 V, preventing latch-up or gate oxide damage in 3.3 V/5 V logic interfaces. |
Use Scenario: Shields 24 V DC digital input circuits from field-wiring induced surges caused by relay coil de-energization. IC Role / Device Role / Timing Role: Primary front-end surge suppressor on isolated input channel, upstream of optocoupler and conditioning circuitry. Use Value: Absorbs 1500 W pulses without degradation, enabling >100,000 surge cycles per IEC 61000-4-5 Level 4 compliance. |
| Telecom Base Station Power Supply | Consumer Appliance Motor Drive Board |
Use Scenario: Guards 48 V intermediate bus against lightning-induced surges entering via outdoor cabling in remote radio units. IC Role / Device Role / Timing Role: Secondary-level TVS on DC-DC converter input, coordinated with upstream MOV and filter inductors. Use Value: Clamps to 53.9 V within 1 ns, reducing stress on primary-side FETs and enabling smaller input capacitors. |
Use Scenario: Safeguards MCU supply pins and Hall-effect sensor lines from commutation spikes generated by BLDC motor windings. IC Role / Device Role / Timing Role: Localized point-of-load TVS adjacent to motor driver IC and position feedback circuitry. Use Value: Operates continuously at 125 °C ambient with no derating, supporting compact sealed enclosure designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A | Lower PPPM (600 W), higher VC/VWM ratio (1.71), SMB package (smaller thermal mass) | Limited to lower-energy transients; unsuitable for automotive load dump per ISO 7637-2 Pulse 5a | Select when space-constrained and surge energy ≤600 W; verify thermal relief on PCB |
| TPSMC36AHE3/9AT | 36 V VBR, 30.8 V VWM, 49.9 V VC at 30.1 A - tighter clamping margin but lower standoff headroom | Better for 3.3 V/5 V logic rails with tight VIN tolerance; less margin for VWM drift over temperature | Choose when protecting lower-voltage rails where 33.3 V VWM risks false triggering |
Compared with SMBJ36A and TPSMC36AHE3/9AT, the TPSMC39AHE3/9AT provides optimal balance of 33.3 V standoff headroom and 53.9 V clamping for 24–36 V industrial and automotive power domains, with full AEC-Q101 qualification and 1500 W capability not matched by either alternative.
Availability
TPSMC39AHE3/9AT is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC input modules, and telecom base station power supplies requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPSMC39AHE3/9AT 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, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade solutions.
The TPSMC series is part of Vishay's PAR® (Protection Against Transients) family, engineered specifically for robust transient suppression in harsh environments including under-hood automotive, factory automation, and outdoor infrastructure.
FAQ
What is the exact breakdown voltage range for TPSMC39AHE3/9AT?
The TPSMC39AHE3/9AT has a guaranteed breakdown voltage (VBR) range of 37.1 V to 41.0 V at 1 mA test current, measured per ANSI/IEEE C62.35. This specification is confirmed in the Vishay datasheet revision 19-Jan-2024 (Document Number: 88407), Table on page 2. The nominal value is 39.0 V, and the device maintains this tolerance across its full operating temperature range.
Is TPSMC39AHE3/9AT AEC-Q101 qualified?
Yes, TPSMC39AHE3/9AT is AEC-Q101 qualified. The HE3 suffix denotes RoHS-compliant and AEC-Q101 qualified construction, as explicitly stated in the "MECHANICAL DATA" section of the Vishay datasheet. Qualification covers stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling - confirming suitability for automotive under-hood applications.
What does the "9AT" suffix mean in TPSMC39AHE3/9AT?
The "9AT" suffix in TPSMC39AHE3/9AT indicates a specific tape-and-reel packaging configuration: 7-inch diameter reel, 850 pieces per reel, with moisture sensitivity level (MSL) 1 compliance. This ordering code aligns with Vishay's preferred package code "H" and delivery mode "7\" diameter plastic tape and reel", as defined in the "ORDERING INFORMATION" table on page 3 of the datasheet.
Can TPSMC39AHE3/9AT be used in bidirectional configurations?
No, TPSMC39AHE3/9AT is unidirectional only, as confirmed in the "FEATURES" section of the datasheet. It protects against positive transients on the cathode side relative to anode. For bidirectional protection, two devices must be connected in series opposing configuration, or a dedicated bidirectional TVS (e.g., TPSMC39CA) must be selected - the TPSMC39AHE3/9AT itself does not support symmetrical clamping.
What is the maximum clamping voltage of TPSMC39AHE3/9AT at rated surge current?
The maximum clamping voltage (VC) of TPSMC39AHE3/9AT is 53.9 V at 27.8 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is specified in the "ELECTRICAL CHARACTERISTICS" table (page 2) and represents the upper limit of voltage seen by protected circuitry during a full-rated 1500 W transient event.
TPSMC39AHE3/9AT 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 27.8A
- 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)
TPSMC39AHE3/9AT FAQ
1.How can I place an order for TPSMC39AHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC39AHE3/9AT 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 TPSMC39AHE3/9AT reliable?
The price and inventory of TPSMC39AHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC39AHE3/9AT is usually 5 days.
3.What payment methods are accepted for TPSMC39AHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC39AHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC39AHE3/9AT?
TPSMC39AHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC39AHE3/9AT 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 TPSMC39AHE3/9AT?
For technical support, including TPSMC39AHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC39AHE3/9AT requirements.
6.How does Aetrix verify that TPSMC39AHE3/9AT is sourced from the original manufacturer or authorized distributors?
All TPSMC39AHE3/9AT 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 TPSMC39AHE3/9AT meets industry standards.
7.What is the process for return or replacement of TPSMC39AHE3/9AT?
All TPSMC39AHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC39AHE3/9AT, 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 TPSMC39AHE3/9AT part is unused and in its original packaging.
Return procedure for TPSMC39AHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC39AHE3/9AT Tags
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