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Vishay General Semiconductor - Diodes Division TPSMB39AHE3_A/I
- Part No.:
- TPSMB39AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB39AHE3_A/I.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,200
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Product details
Overview
TPSMB39AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 39 V breakdown voltage (VBR), 33.3 V stand-off voltage (VWM), 53.9 V maximum clamping voltage (VC) at 11.1 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature. It is AEC-Q101 qualified and RoHS-compliant, used in automotive sensor protection and industrial power rail surge suppression.
For engineers reviewing the TPSMB39AHE3_A/I datasheet, TPSMB39AHE3_A/I pinout, TPSMB39AHE3_A/I application, or TPSMB39AHE3_A/I equivalent, key selection criteria include unidirectional polarity, SMB package thermal and mechanical compatibility, 33.3 V working voltage margin, 53.9 V clamping performance under 11.1 A surge, and AEC-Q101 qualification for automotive-grade reliability validation.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with optimized junction passivation for stable high-temperature operation. Its clamping behavior follows standardized 10/1000 µs waveform testing per ANSI/IEEE C62.35, delivering consistent surge suppression across -65 °C to +185 °C operating range.
The device exhibits low incremental surge resistance and very fast response time-critical for protecting sensitive MOSFETs and ICs against inductive switching spikes and lightning-induced transients. Its 75 A IFSM rating supports robust handling of 8.3 ms half-sine surges without degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V - ensures reliable conduction onset above system operating voltage while avoiding false triggering |
| VWM | 33.3 V - maximum continuous reverse voltage before leakage exceeds 1 µA, defining safe DC operating margin |
| VC @ IPPM | 53.9 V at 11.1 A - clamped voltage seen by protected circuit during worst-case 600 W transient event |
| PPPM | 600 W (10/1000 µs) - peak surge energy absorption capability under standard lightning/surge test conditions |
| TJ max. | +185 °C - enables use in under-hood automotive and high-ambient industrial environments without derating |
| IFSM | 75 A (8.3 ms half-sine) - withstands repetitive motor-switching or relay-bounce surges without failure |
| Leakage @ VWM | 1 µA at 25 °C - negligible standby power loss and minimal impact on high-impedance sensor bias networks |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C reflow), cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping loop with minimal inductance |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive electronics including engine control units and ADAS sensor interfaces |
| 185 °C junction rating | Enables direct placement near heat sources (e.g., power converters) without thermal derating penalties |
| 600 W peak pulse power | Meets ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3 surge immunity requirements |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard SMT reflow without baking preconditioning |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive kickback in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between signal line and chassis ground, responding within nanoseconds to transients exceeding 33.3 V. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V interface ICs by limiting voltage excursion to ≤53.9 V during 11.1 A surge events. | Use Scenario: Safeguarding 24 V DC input rails in PLC modules and motor drives against switching surges and EFT bursts. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main supply input, coordinated with upstream fuses and downstream LDOs. Use Value: Absorbs 600 W transient energy without degradation, maintaining system uptime where replacement access is limited or costly. |
| Telecom Line Interface | Consumer Device USB/Power Port |
Use Scenario: Shielding Ethernet PHYs and PoE injectors from induced surges on outdoor cabling in telecom base stations. IC Role / Device Role / Timing Role: Secondary-level TVS on data pair or power feed, placed after gas discharge tube (GDT) primary protection. Use Value: Provides precise 33.3 V hold-off and 53.9 V clamping to protect 100BASE-TX transformers rated for ≤60 V isolation. | Use Scenario: Adding surge resilience to USB-C power delivery inputs and auxiliary charging ports in smart home hubs and portable medical devices. IC Role / Device Role / Timing Role: Low-leakage (1 µA) unidirectional clamp on VBUS line, sized to avoid interfering with USB PD negotiation. Use Value: Enables compliance with IEC 61000-4-5 Level 2 (0.5 kV line-earth) while preserving battery runtime via sub-µA standby current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ39A | Same VBR (37.1–41.0 V), lower PPPM = 400 W, SMA package (smaller footprint, lower thermal mass) | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or high-reliability automotive use | Select when board space is constrained and surge threat level is below 400 W |
| SMCJ39A | Same VBR, higher PPPM = 1500 W, larger SMC (DO-214AB) package with improved thermal dissipation | Overqualified for 600 W needs; requires larger PCB area and may increase layout inductance | Select when future-proofing for higher surge classes or extended lifetime under repeated stress |
Compared with SMAJ39A and SMCJ39A, the TPSMB39AHE3_A/I delivers optimal balance of 600 W surge capacity, SMB footprint compatibility, AEC-Q101 qualification, and 185 °C operation-making it the preferred choice for space-constrained, high-reliability 24–36 V automotive and industrial systems.
Availability
TPSMB39AHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC power inputs, and telecom line protection requiring stable component supply and long-term lifecycle support.
Supply support for TPSMB39AHE3_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, MOSFETs, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The TPSMB series belongs to Vishay's PAR® (Protection and Regulation) transient suppressor product line, engineered specifically for high-temperature, high-reliability surge suppression in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the breakdown voltage tolerance for TPSMB39AHE3_A/I?
The TPSMB39AHE3_A/I has a specified breakdown voltage range of 37.1 V (minimum) to 41.0 V (maximum) at 1 mA test current, with a nominal value of 39.0 V. This ±5% tolerance ensures predictable turn-on behavior across production lots while maintaining sufficient margin above its 33.3 V stand-off voltage. The device's temperature coefficient of 0.091 %/°C allows accurate VBR prediction across its full -65 °C to +185 °C operating range.
Is TPSMB39AHE3_A/I suitable for bidirectional transient protection?
No, TPSMB39AHE3_A/I is unidirectional only, as confirmed in the Vishay datasheet. It conducts surge current only when the cathode is positive relative to the anode-making it appropriate for DC power lines and single-polarity signal paths. For AC or bipolar signal lines (e.g., RS-485, audio), a bidirectional variant such as TPSMB39CAHE3_A/I would be required; that part is not interchangeable with TPSMB39AHE3_A/I due to fundamental polarity differences.
What does the "HE3" suffix indicate in TPSMB39AHE3_A/I?
Per Vishay's ordering nomenclature, the "HE3" suffix in TPSMB39AHE3_A/I denotes RoHS-compliant construction and AEC-Q101 qualification. The "H" indicates tape-and-reel packaging, "E3" specifies the environmental and reliability grade, and the "_A/I" denotes revision A in 13-inch reel format (3200 units per reel). This distinguishes it from HM3 variants, which add halogen-free compliance.
How does the clamping voltage of TPSMB39AHE3_A/I compare to its breakdown voltage?
The TPSMB39AHE3_A/I clamps at 53.9 V when subjected to its rated 11.1 A peak pulse current (10/1000 µs), yielding a clamping ratio (VC/VBR) of approximately 1.38. This ratio reflects low dynamic impedance and efficient energy diversion-critical for protecting downstream components rated for ≤60 V absolute maximum. The 53.9 V clamping value is measured under standardized conditions and remains stable across temperature due to the device's passivated junction design.
Can TPSMB39AHE3_A/I replace older SMB-format TVS diodes like P6SMB39A?
TPSMB39AHE3_A/I is a direct functional and mechanical replacement for P6SMB39A, sharing identical SMB (DO-214AA) package dimensions, unidirectional polarity, and comparable electrical specs (VBR, VC, PPPM). However, TPSMB39AHE3_A/I adds AEC-Q101 qualification, 185 °C junction rating, and enhanced high-temperature stability-making it suitable for newer automotive and industrial designs where legacy P6SMB39A may not meet updated reliability requirements.
TPSMB39AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 11.1A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
TPSMB39AHE3_A/I FAQ
1.How can I place an order for TPSMB39AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB39AHE3_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 TPSMB39AHE3_A/I reliable?
The price and inventory of TPSMB39AHE3_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 TPSMB39AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB39AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB39AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB39AHE3_A/I?
TPSMB39AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB39AHE3_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 TPSMB39AHE3_A/I?
For technical support, including TPSMB39AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB39AHE3_A/I requirements.
6.How does Aetrix verify that TPSMB39AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB39AHE3_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 TPSMB39AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB39AHE3_A/I?
All TPSMB39AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB39AHE3_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 TPSMB39AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMB39AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB39AHE3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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