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Vishay General Semiconductor - Diodes Division TPSMP39-E3/84A
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- Part No.:
- TPSMP39-E3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP39-E3/84A.pdf
- Description:
- TVS DIODE 31.6VWM 56.4VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,649
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Product details
Overview
TPSMP39-E3/84A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-220AA (SMP) package, designed for automotive-grade surge protection. It features a breakdown voltage range of 35.1 V to 42.9 V at 1 mA test current, 1.0 W steady-state power dissipation, 40 A peak forward surge current, 7.1 A peak pulse current (10/1000 µs), and clamps transients to ≤56.4 V. It is used to protect sensor signal lines and ECUs in 12 V automotive systems.
For engineers reviewing the TPSMP39-E3/84A datasheet, TPSMP39-E3/84A pinout, TPSMP39-E3/84A application, or TPSMP39-E3/84A equivalent, key selection criteria include its AEC-Q101-compliant reliability (E3 suffix denotes commercial grade), low-profile 1.0 mm height, RoHS/WEEE compliance, and MSL Level 1 moisture sensitivity rating for robust SMT assembly.
Technical Context
This TVS diode operates as a unidirectional clamping device with a silicon avalanche structure using Vishay's patented PAR oxide passivated chip construction. Its low incremental surge resistance and fast response time enable effective suppression of ESD and ISO 7637-2 load-dump transients in automotive electronics.
The device is rated for junction temperatures up to +185 °C and requires no external biasing - it functions solely via reverse-biased avalanche breakdown above V(BR). Its thermal derating follows Fig. 2 in Document 88937, with full PPPM capability only at TA ≤ 25 °C on 5.0 × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage V(BR) | 35.1 V min / 42.9 V max at IT = 1 mA - defines minimum clamping threshold under surge conditions |
| Stand-off Voltage VWM | 31.6 V - maximum continuous reverse voltage before significant leakage begins |
| Clamping Voltage VC | ≤56.4 V at IPPM = 7.1 A (10/1000 µs) - actual worst-case voltage seen by protected circuit during surge |
| Peak Pulse Power PPPM | 400 W - maximum transient energy absorption capability per single pulse |
| Peak Forward Surge Current IFSM | 40 A - withstands 10 ms half-sine surges without failure, critical for alternator load dump immunity |
| Junction Temperature Range | –65 °C to +185 °C - supports operation in under-hood automotive environments |
Pinout & Package
DO-220AA (SMP) surface-mount package: ultra-low profile (1.0 mm typical height), matte tin-plated leads, cathode indicated by color band, UL-94V-0 epoxy encapsulation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to system ground or lower-potential rail in unidirectional configuration |
| Cathode | Avalanche breakdown node | Connected to protected line (e.g., CAN_H, LIN, sensor output); color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Patented PAR oxide passivation | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress |
| MSL Level 1 rating | Allows unlimited floor life and reflow compatibility without dry-pack or baking requirements |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision |
| 1.0 mm typical height | Reduces board space and enables placement near sensitive ICs or connectors without mechanical interference |
Applications
| Automotive Sensor Protection | Body Control Module (BCM) Inputs |
|---|---|
Use Scenario: Protecting analog outputs of temperature, pressure, or position sensors exposed to battery transients and ESD in engine compartments. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between sensor output and microcontroller ADC input. Use Value: Limits voltage to ≤56.4 V during 7.1 A surges, preventing damage to 3.3 V or 5 V ADC front-ends while maintaining signal integrity below 31.6 V. | Use Scenario: Safeguarding discrete inputs (e.g., door lock switches, lamp feedback) in BCMs subjected to ISO 7637-2 pulse 1, 2a, and 5a. IC Role / Device Role / Timing Role: Standoff-clamp TVS on each switch input line, referenced to chassis ground. Use Value: Absorbs 400 W pulses without degradation, enabling reliable operation across –40 °C to +125 °C ambient with no derating loss at board level. |
| CAN Bus Line Protection | Infotainment System Power Rails |
Use Scenario: Secondary protection on CAN_H/CAN_L lines downstream of common-mode chokes, guarding against ESD and localized surges. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp (CJ < 200 pF at VWM) placed per-line to chassis ground. Use Value: Clamps to ≤56.4 V within nanoseconds while adding <1 pF parasitic capacitance - preserves CAN FD signal integrity up to 5 Mbps. | Use Scenario: Overvoltage suppression on 5 V or 12 V rails feeding display controllers, audio amplifiers, and USB hubs in head units. IC Role / Device Role / Timing Role: Primary transient suppressor mounted at power entry point before DC/DC converters. Use Value: Withstands 40 A IFSM surges and 400 W PPPM pulses, ensuring uninterrupted operation during alternator load dump events per ISO 16750-2. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ36A-E3/5AT | DO-214AC (SMA) package; 36 V V(BR) min/max = 32.4 V/40.0 V; 400 W PPPM; 11.3 A IPPM | Larger footprint (2.54 mm height); higher clamping voltage (64.5 V) | Preferred where board space allows larger package and higher clamping is acceptable |
| TPSMP39A-E3/84A | Same DO-220AA package; tighter V(BR) tolerance (37.1–41.0 V); same 400 W PPPM; 7.4 A IPPM; 53.9 V VC | Lower clamping voltage and tighter breakdown spec - optimized for high-reliability automotive modules | Select when tighter V(BR) control and lower VC are required for margin-critical designs |
Compared with SMAJ36A-E3/5AT, TPSMP39-E3/84A offers 1.0 mm height and superior PCB density; compared with TPSMP39A-E3/84A, it trades tighter V(BR) tolerance and lower VC for broader availability and cost efficiency in non-AEC-Q101 contexts.
Availability
TPSMP39-E3/84A is available at Aetrix Electronics and suitable for automotive sensor interfaces, body control modules, infotainment power rails, and CAN bus protection requiring stable component supply and consistent DO-220AA tape-and-reel delivery.
Supply support for TPSMP39-E3/84A 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, MOSFETs, and protection devices with emphasis on automotive, industrial, and computing applications.
The TPSMP series was engineered specifically for high-density, high-reliability transient suppression in automotive electronics, targeting AEC-Q101 qualification and seamless integration into automated SMT lines with minimal board real estate.
FAQ
What is the breakdown voltage tolerance of TPSMP39-E3/84A?
The TPSMP39-E3/84A has a specified breakdown voltage range of 35.1 V to 42.9 V at IT = 1 mA, yielding a ±11% tolerance. This wide range reflects the inherent variance in silicon avalanche structures and is fully characterized per ANSI/IEEE C62.35. The TPSMP39-E3/84A datasheet confirms this in Table "ELECTRICAL CHARACTERISTICS" on page 2.
Is TPSMP39-E3/84A AEC-Q101 qualified?
No - the TPSMP39-E3/84A carries the E3 suffix, indicating commercial-grade qualification. For AEC-Q101 compliance, select the TPSMP39A-E3/84A variant (HE3 suffix), which is explicitly qualified per AEC-Q101. The TPSMP39-E3/84A remains suitable for non-automotive industrial and consumer applications requiring high surge robustness.
What is the maximum clamping voltage for TPSMP39-E3/84A under standard test conditions?
The maximum clamping voltage VC of TPSMP39-E3/84A is 56.4 V at a peak pulse current IPPM of 7.1 A with a 10/1000 µs waveform. This value is measured per Figure 1 and Table "ELECTRICAL CHARACTERISTICS" in Vishay Document Number 88937 and represents the worst-case voltage imposed on the protected circuit during surge events.
Can TPSMP39-E3/84A be used in bidirectional configurations?
No - TPSMP39-E3/84A is a unidirectional TVS diode, as confirmed in the "FEATURES" section of its datasheet. It conducts only in reverse breakdown and must be oriented with cathode toward the protected line. For bidirectional protection, two TPSMP39-E3/84A devices in series opposition or a dedicated bidirectional part like SMBJ36CA would be required.
What is the thermal derating behavior of TPSMP39-E3/84A above 25 °C ambient?
The TPSMP39-E3/84A follows the derating curve in Figure 2 of Document 88937: peak pulse power (PPPM) decreases linearly from 100% at 25 °C to ~25% at 150 °C ambient. At 125 °C, PPPM is approximately 50%. This derating applies only to repetitive pulses; single-event surge capability remains unaffected per JEDEC JESD22-A114.
TPSMP39-E3/84A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- PAR®, eSMP®
- 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):
- 7.1A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-220AA (SMP)
TPSMP39-E3/84A FAQ
1.How can I place an order for TPSMP39-E3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP39-E3/84A 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 TPSMP39-E3/84A reliable?
The price and inventory of TPSMP39-E3/84A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP39-E3/84A is usually 5 days.
3.What payment methods are accepted for TPSMP39-E3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP39-E3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP39-E3/84A?
TPSMP39-E3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP39-E3/84A 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 TPSMP39-E3/84A?
For technical support, including TPSMP39-E3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP39-E3/84A requirements.
6.How does Aetrix verify that TPSMP39-E3/84A is sourced from the original manufacturer or authorized distributors?
All TPSMP39-E3/84A 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 TPSMP39-E3/84A meets industry standards.
7.What is the process for return or replacement of TPSMP39-E3/84A?
All TPSMP39-E3/84A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP39-E3/84A, 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 TPSMP39-E3/84A part is unused and in its original packaging.
Return procedure for TPSMP39-E3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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