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Vishay General Semiconductor - Diodes Division TPSMC39HE3_A/I
- Part No.:
- TPSMC39HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC39HE3_A/I.pdf
- Description:
- TVS DIODE 31.6VWM 56.4VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,392
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Product details
Overview
TPSMC39HE3_A/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 nominal breakdown voltage (VBR), and 53.9 V maximum clamping voltage (VC) at 27.8 A peak pulse current. It operates from −65 °C to +185 °C and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the TPSMC39HE3_A/I datasheet, TPSMC39HE3_A/I pinout, TPSMC39HE3_A/I application, or TPSMC39HE3_A/I equivalent, key selection criteria include unidirectional polarity, 33.3 V stand-off voltage (VWM), <1.0 μA reverse leakage at VWM, 185 °C junction rating, and RoHS-compliant, halogen-free HE3 suffix construction.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and fast response to transients. Its junction design enables reliable clamping under repetitive surge conditions up to 185 °C junction temperature, with low incremental surge resistance ensuring minimal voltage overshoot during ESD or load-switching events.
The device delivers 1500 W peak pulse power per 10/1000 μs waveform when mounted on 8.0 mm × 8.0 mm copper pads, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It is specifically qualified to AEC-Q101 for automotive-grade reliability in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V - ensures precise overvoltage triggering above system operating voltage |
| VWM | 33.3 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 53.9 V at 27.8 A - clamping voltage limits downstream IC stress during 10/1000 μs surges |
| PPPM | 1500 W - handles high-energy transients from inductive switching or lightning-induced surges |
| TJ max | +185 °C - supports operation in engine bay, powertrain, and under-hood automotive modules |
| Polarity | Unidirectional - protects DC-biased lines such as power rails and sensor supply paths |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 0.320" body length and matte tin leads |
Pinout & Package
Package: SMC (DO-214AB), molded case meeting UL 94 V-0 flammability rating; terminals are matte tin plated, solderable per J-STD-002 and JESD 22-B102; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal under forward bias | Connected to ground or lower-potential node in unidirectional TVS configuration |
| Cathode | Current exit terminal under forward bias; marked with band | Connected to protected line (e.g., 33.3 V rail); clamps to VC when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier structure improves long-term reliability under thermal cycling and humidity |
| AEC-Q101 qualification | Validated for automotive applications including powertrain control units and ADAS sensor interfaces |
| MSL Level 1 | Enables single-reflow assembly without moisture sensitivity concerns (peak 260 °C) |
| Low clamping ratio (VC/VBR) | 1.38 - tight clamping margin preserves safe operating area of protected MOSFETs and ICs |
| High IFSM | 200 A - withstands repeated 8.3 ms half-sine surges common in motor drive and relay coil snubbing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 3.3 V or 5 V microcontroller supply lines in engine control modules exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between power input and ground to shunt transient energy before it reaches LDOs or MCU pins. Use Value: Withstands 185 °C ambient and clamps to ≤53.9 V, preventing latch-up or gate oxide damage in automotive-grade MCUs. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in industrial pressure transmitters subject to field wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: TVS placed across signal and return path to limit differential-mode transients before they reach precision DAC or op-amp inputs. Use Value: 1.0 μA leakage at 33.3 V ensures no measurable error in µA-level current loop accuracy. |
| Telecom Line Card Surge Suppression | Consumer USB Power Delivery Protection |
Use Scenario: Front-end protection for PoE-powered Ethernet switches where DC bias (up to 57 V) coexists with fast-rising lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS (VWM = 33.3 V) used in series with higher-voltage devices to handle intermediate clamping tiers. Use Value: 1500 W pulse rating and 27.8 A IPPM enable coordination with upstream GDTs or MOVs in multi-stage telecom protectors. |
Use Scenario: Input-side transient suppression on USB-C PD 20 V power rails in portable monitors and docking stations. IC Role / Device Role / Timing Role: Unidirectional TVS connected between VBUS and GND to absorb plug/unplug ESD and hot-swap overshoot. Use Value: Fast response time and 53.9 V clamping prevent overvoltage damage to USB PD controllers rated for 28 V absolute maximum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A | Lower PPPM (400 W), smaller SMA package, VBR = 36–39.9 V, VC = 58.1 V at 6.9 A | Suitable for lower-energy consumer applications; not AEC-Q101 qualified | Select SMAJ36A only for cost-sensitive, non-automotive designs with <400 W surge requirements. |
| TPSMC36AHE3_A/I | Identical package and qualification; VBR = 34.2–37.8 V, VWM = 30.8 V, VC = 49.9 V at 30.1 A | Better suited for 24 V nominal systems requiring tighter clamping margin | Choose TPSMC36AHE3_A/I when protecting 24 V rails where 30.8 V VWM provides larger noise margin vs. 33.3 V of TPSMC39HE3_A/I. |
Compared with SMAJ36A and TPSMC36AHE3_A/I, the TPSMC39HE3_A/I offers higher energy handling (1500 W vs. 400 W or same-family 1500 W), tighter clamping (53.9 V vs. 58.1 V or 49.9 V), and a 33.3 V standoff ideal for 36 V nominal systems-making it optimal for robust 12/24/36 V automotive and industrial power rail protection.
Availability
TPSMC39HE3_A/I is available at Aetrix Electronics and suitable for automotive power distribution modules, industrial sensor signal conditioning circuits, and telecom line card surge protection requiring stable component supply, AEC-Q101 compliance, and high-temperature operational continuity.
Supply support for TPSMC39HE3_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 reliability, high-temperature performance, and automotive qualification.
The TPSMC series is designed for high-energy transient suppression in demanding environments-specifically targeting automotive, industrial, and telecom applications where 1500 W surge capability, 185 °C operation, and AEC-Q101 validation are mandatory.
FAQ
What is the maximum clamping voltage of the TPSMC39HE3_A/I at its rated peak pulse current?
The TPSMC39HE3_A/I has a maximum clamping voltage (VC) of 53.9 V at its rated peak pulse current (IPPM) of 27.8 A, measured using a 10/1000 μs waveform. This value defines the upper voltage limit imposed on protected circuitry during worst-case surge events and is critical for ensuring compatibility with downstream components' absolute maximum ratings. The TPSMC39HE3_A/I maintains this clamping performance across its full operating temperature range.
Is the TPSMC39HE3_A/I suitable for automotive applications?
Yes, the TPSMC39HE3_A/I is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and powertrain applications. Its HE3 suffix confirms RoHS compliance, halogen-free construction, and qualification to automotive reliability standards. The TPSMC39HE3_A/I is commonly deployed in engine control units, battery management systems, and ADAS camera modules where sustained high-temperature operation and transient immunity are required.
What does the "HE3" suffix mean in TPSMC39HE3_A/I?
The "HE3" suffix in TPSMC39HE3_A/I indicates RoHS-compliant, halogen-free construction and AEC-Q101 qualification. It also specifies that the device meets JESD 201 Class 2 whisker resistance and is supplied in 13" diameter plastic tape and reel (package code "I"). The "A" denotes the revision level, and "/I" confirms the delivery format-distinct from "/H" (7" reel). This suffix directly identifies the TPSMC39HE3_A/I as an automotive-grade, environmentally compliant variant.
How does the TPSMC39HE3_A/I compare to bidirectional TVS diodes?
The TPSMC39HE3_A/I is unidirectional and intended for DC-biased lines such as power rails and sensor supplies, where reverse polarity is not expected. Unlike bidirectional TVS diodes-which clamp both positive and negative transients-it provides lower leakage (<1.0 μA at 33.3 V) and tighter clamping in the forward direction. For AC-coupled or floating signal lines, a bidirectional part would be required; the TPSMC39HE3_A/I is not suitable for those use cases.
What PCB pad layout is recommended for optimal thermal and surge performance of the TPSMC39HE3_A/I?
Vishay specifies mounting the TPSMC39HE3_A/I on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads at each terminal to achieve its rated 1500 W peak pulse power. The SMC (DO-214AB) package requires adequate copper area for heat dissipation during surge events and to maintain junction temperature within limits. Pad dimensions must follow the outline drawing on page 4 of document 88407, with minimum 0.126" anode/cathode pad width and 0.185" maximum center-to-center spacing. Proper layout ensures the TPSMC39HE3_A/I delivers full specified performance.
TPSMC39HE3_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):
- 31.6V
- Voltage - Breakdown (Min):
- 35.1V
- Voltage - Clamping (Max) @ Ipp:
- 56.4V
- Current - Peak Pulse (10/1000µs):
- 26.6A
- 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)
TPSMC39HE3_A/I FAQ
1.How can I place an order for TPSMC39HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC39HE3_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 TPSMC39HE3_A/I reliable?
The price and inventory of TPSMC39HE3_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 TPSMC39HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMC39HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC39HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC39HE3_A/I?
TPSMC39HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC39HE3_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 TPSMC39HE3_A/I?
For technical support, including TPSMC39HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC39HE3_A/I requirements.
6.How does Aetrix verify that TPSMC39HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMC39HE3_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 TPSMC39HE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMC39HE3_A/I?
All TPSMC39HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC39HE3_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 TPSMC39HE3_A/I part is unused and in its original packaging.
Return procedure for TPSMC39HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMC39HE3_A/I Tags
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