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Vishay General Semiconductor - Diodes Division TPSMC39AHE3_B/I
- Part No.:
- TPSMC39AHE3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC39AHE3_B/I.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,136
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Product details
Overview
TPSMC39AHE3_B/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 39.0 V breakdown voltage (VBR), 33.3 V stand-off voltage (VWM), and 53.9 V clamping voltage (VC) at 27.8 A peak pulse current - deployed for overvoltage protection of MOSFETs and signal lines in automotive powertrain control units.
For engineers reviewing the TPSMC39AHE3_B/I datasheet, TPSMC39AHE3_B/I pinout, TPSMC39AHE3_B/I application, or TPSMC39AHE3_B/I equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C maximum junction temperature, unidirectional polarity, low incremental surge resistance, and RoHS-compliant matte tin-plated terminals solderable per J-STD-002.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive transients. Its junction passivation enables operation up to TJ = 185 °C, supporting high-reliability automotive environments where thermal derating must be minimized across extended temperature ranges.
The device responds within picoseconds to voltage surges and maintains low dynamic impedance during clamping. With a 10/1000 μs waveform rating and 200 A non-repetitive forward surge capability (8.3 ms half-sine), it handles both fast ESD-like events and slower inductive switching transients without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V - ensures reliable triggering above system operating voltage while accommodating ±5% tolerance and temperature drift |
| VWM | 33.3 V - maximum continuous reverse voltage before leakage exceeds 1 μA, compatible with 3.3 V–24 V logic and power rails |
| VC @ IPPM | 53.9 V - clamps transients to safe levels for downstream 50 V-rated ICs and MOSFETs during 27.8 A surge |
| PPPM | 1500 W - sustains high-energy transients from inductive load switching (e.g., solenoids, relays) without failure |
| TJ max. | +185 °C - supports under-hood automotive applications without thermal shutdown or parameter shift |
| Polarity | Unidirectional - protects against positive-going transients only; requires external design consideration for bidirectional threats |
| MSL Level | Level 1 (260 °C peak reflow) - allows standard SMT assembly without moisture sensitivity concerns |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, cathode indicated by molded band. Dimensions: 7.11 mm × 6.60 mm × 2.90 mm (L × W × H), with 8.0 mm × 8.0 mm copper pad requirement per terminal for thermal and power handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during clamping | Connected to protected line (e.g., CAN_H, battery rail); conducts surge current to ground path when VBR exceeded |
| Cathode | Current exit point during clamping | Connected to system ground or low-impedance return; color band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR and leakage performance over 1000+ thermal cycles at 150 °C ambient |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including HTOL, TC, and UHAST - required for powertrain and chassis modules |
| 1500 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 1/2a/5a transients without parametric shift or catastrophic failure |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive gate drivers |
| Matte tin-plated leads | Ensures robust solder joint integrity per J-STD-002 Class 2, eliminating whisker risk in long-life industrial deployments |
Applications
| Automotive Powertrain Control | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting microcontroller I/O and gate driver inputs from load dump and inductive kickback in engine control units (ECUs). IC Role / Device Role: Primary transient suppression element placed directly at connector interface or MOSFET gate input. Use Value: Clamps 12 V system transients to ≤53.9 V, preventing latch-up or oxide damage in 3.3 V/5 V logic and 40 V-rated gate drivers. | Use Scenario: Shielding PLC analog input channels and encoder signal lines from motor commutation noise and relay bounce. IC Role / Device Role: Unidirectional TVS on differential RS-485 or single-ended 0–10 V sensor lines. Use Value: Limits induced spikes to <55 V, preserving ADC reference stability and avoiding false triggers in isolated feedback circuits. |
| Telecom DC Power Feeds | Consumer Appliance Mainboard Protection |
Use Scenario: Safeguarding PoE-powered Ethernet PHYs and DC-DC converters from lightning-induced surges on 48 V DC distribution lines. IC Role / Device Role: Secondary-level TVS after primary GDT or MOV, providing precise clamping near IC absolute maximum ratings. Use Value: Delivers 53.9 V clamping at 27.8 A, enabling use with 50 V-rated Ethernet magnetics and 60 V-input buck controllers. | Use Scenario: Protecting MCU reset lines and USB-C PD communication pins in smart home hubs exposed to ESD and cable coupling. IC Role / Device Role: Localized TVS adjacent to connectors and reset ICs, minimizing trace inductance in compact layouts. Use Value: Sub-1 ns response and 1 μA leakage at 33.3 V ensure no impact on reset timing or USB enumeration while passing IEC 61000-4-2 ±8 kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ39A-E3/5A (Vishay) | Same VBR/VC specs but lower PPPM = 400 W; SMA package (smaller footprint, lower thermal mass) | Limited to lower-energy transients (e.g., ESD-only); unsuitable for ISO 7637-2 Pulse 5a or load dump | Select TPSMC39AHE3_B/I when >1 kW surge energy must be absorbed without derating or parallel devices. |
| 1.5KE39A (ON Semiconductor) | Through-hole DO-201 package; identical VBR, VC, and PPPM, but not AEC-Q101 qualified and MSL level unknown | Not suitable for automated SMT production or automotive under-hood use; requires wave soldering | Choose TPSMC39AHE3_B/I for surface-mount compatibility, AEC-Q101 compliance, and reflow-ready packaging. |
Compared with SMAJ39A-E3/5A and 1.5KE39A, the TPSMC39AHE3_B/I provides higher surge robustness in a qualified SMT package - enabling single-device protection for automotive-grade 12 V systems without layout compromise or secondary qualification effort.
Availability
TPSMC39AHE3_B/I is available at Aetrix Electronics and suitable for automotive powertrain control, industrial motor drive interfaces, telecom DC power feeds, and consumer appliance mainboard protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for TPSMC39AHE3_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, MOSFETs, and optoelectronics with emphasis on reliability, thermal performance, and automotive qualification.
The TPSMC series is part of Vishay's PAR® (Protection and Regulation) transient suppression platform, engineered specifically for high-temperature, high-energy automotive and industrial environments where sustained 185 °C operation and AEC-Q101 validation are mandatory.
FAQ
What is the clamping voltage of the TPSMC39AHE3_B/I at its rated peak pulse current?
The TPSMC39AHE3_B/I has a maximum clamping voltage (VC) of 53.9 V at 27.8 A peak pulse current (IPPM) under a 10/1000 μs waveform. This value is measured per JEDEC standards and guarantees that downstream components exposed to the protected line will not experience voltages exceeding 53.9 V during specified surge conditions. The TPSMC39AHE3_B/I achieves this with low dynamic impedance, ensuring consistent clamping across production lots and temperature ranges from -65 °C to +185 °C.
Is the TPSMC39AHE3_B/I AEC-Q101 qualified, and what does the HE3 suffix indicate?
Yes, the TPSMC39AHE3_B/I is AEC-Q101 qualified. The HE3 suffix denotes RoHS-compliant construction with matte tin-plated leads and full qualification to the AEC-Q101 stress test standard for discrete semiconductors. This includes testing for high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. The TPSMC39AHE3_B/I meets these requirements with no failures across all test conditions, making it suitable for automotive powertrain, body control, and ADAS modules where zero-defect reliability is mandated.
What is the maximum operating junction temperature for the TPSMC39AHE3_B/I, and how does it affect design margins?
The TPSMC39AHE3_B/I supports a maximum junction temperature (TJ) of +185 °C. This allows operation in under-hood automotive environments where ambient temperatures exceed 125 °C, with sufficient thermal headroom to maintain VBR stability and leakage below 1 μA at VWM. Designers can reduce heatsinking or simplify layout without compromising surge performance, since the TPSMC39AHE3_B/I retains full 1500 W pulse rating up to 150 °C ambient when mounted on 8.0 mm × 8.0 mm copper pads - verified per Figure 2 in the official datasheet.
Can the TPSMC39AHE3_B/I be used in bidirectional protection circuits?
No, the TPSMC39AHE3_B/I is unidirectional only, as confirmed in the "Features" section of the Vishay datasheet. It protects against positive-going transients on the anode-to-cathode path and conducts only when the anode voltage exceeds the cathode by ≥37.1 V. For bidirectional protection (e.g., AC lines or differential buses), two TPSMC39AHE3_B/I devices must be connected in series opposition, or a dedicated bidirectional TVS such as the TPSMC39CAHE3_B/I should be selected instead. Using a single TPSMC39AHE3_B/I in reverse-biased configuration risks permanent breakdown.
What is the lead finish and solderability specification for the TPSMC39AHE3_B/I?
The TPSMC39AHE3_B/I features matte tin-plated leads compliant with J-STD-002 Class 2 for solderability and qualified to JESD 201 Class 2 for whisker resistance. These terminals withstand peak reflow temperatures up to 260 °C (MSL Level 1) and exhibit no dewetting or voiding when processed using standard lead-free reflow profiles. The TPSMC39AHE3_B/I's plating ensures repeatable, high-yield SMT assembly across high-volume manufacturing lines without post-solder cleaning or special flux requirements.
TPSMC39AHE3_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):
- 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 (SMC)
TPSMC39AHE3_B/I FAQ
1.How can I place an order for TPSMC39AHE3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC39AHE3_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 TPSMC39AHE3_B/I reliable?
The price and inventory of TPSMC39AHE3_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 TPSMC39AHE3_B/I is usually 5 days.
3.What payment methods are accepted for TPSMC39AHE3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC39AHE3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC39AHE3_B/I?
TPSMC39AHE3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC39AHE3_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 TPSMC39AHE3_B/I?
For technical support, including TPSMC39AHE3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC39AHE3_B/I requirements.
6.How does Aetrix verify that TPSMC39AHE3_B/I is sourced from the original manufacturer or authorized distributors?
All TPSMC39AHE3_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 TPSMC39AHE3_B/I meets industry standards.
7.What is the process for return or replacement of TPSMC39AHE3_B/I?
All TPSMC39AHE3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC39AHE3_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 TPSMC39AHE3_B/I part is unused and in its original packaging.
Return procedure for TPSMC39AHE3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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