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Vishay General Semiconductor - Diodes Division TPSMB39AHE3/5BT
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- Part No.:
- TPSMB39AHE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB39AHE3/5BT.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,431
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Product details
Overview
TPSMB39AHE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching transients and lightning-induced surges on power rails and signal lines. It features a 39 V breakdown voltage (VBR = 37.1–41.0 V at IT = 1 mA), 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 - deployed in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB39AHE3/5BT datasheet, TPSMB39AHE3/5BT pinout, TPSMB39AHE3/5BT application, or TPSMB39AHE3/5BT equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, clamping performance under 10/1000 μs surge, and thermal derating behavior above 25 °C ambient.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge stress and high-temperature operation. Its junction passivation enables reliable TJ = 185 °C capability and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak.
The device exhibits low incremental surge resistance and fast response time, enabling effective suppression of fast-rising transients on 12 V and 24 V automotive power buses. Its cathode-band polarity marking and matte tin-plated leads comply with J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V at IT = 1 mA - defines precise voltage threshold where avalanche conduction begins |
| VWM | 33.3 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 53.9 V at 11.1 A - clamped voltage during 10/1000 μs surge, limiting downstream IC stress |
| PPPM | 600 W - peak pulse power handling with 0.01% duty cycle, critical for infrequent but high-energy transients |
| TJ max. | +185 °C - enables use in under-hood automotive environments without thermal derating penalties |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct orientation in circuit |
| Package | SMB (DO-214AA) - standardized surface-mount footprint with 0.220" × 0.130" body and defined pad layout |
Pinout & Package
TPSMB39AHE3/5BT is housed in an SMB (DO-214AA) plastic package with two terminals: cathode (marked by color band) and anode. The package conforms to JEDEC DO-214AA mechanical outline and supports automated placement and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events |
| Anode | Reference/return 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 temperature cycling, HTRB, and surge endurance per stress test plan |
| Junction passivation | Reduces surface leakage and improves long-term stability under high humidity and bias stress |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing at 260 °C peak without baking |
| Low clamping ratio (VC/VBR) | ~1.38 - minimizes overvoltage margin between breakdown and clamping, enhancing protection tightness |
| High IFSM | 75 A (8.3 ms half-sine) - withstands repeated motor-commutation or relay-coil turn-off surges |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Suppresses load-dump and jump-start transients on 12 V battery-fed ECUs and body control modules. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed between battery rail and DC-DC input, conducting only during >33.3 V excursions. Use Value: Limits voltage seen by downstream LDOs and microcontrollers to ≤53.9 V, preventing latch-up or oxide rupture. | Use Scenario: Protects analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional shunt clamp on 0–10 V or 4–20 mA signal paths exposed to ESD and field wiring noise. Use Value: Clamps fast transients (<1 ns rise) before they couple into precision ADC front-ends, preserving measurement integrity. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Surge Suppression |
Use Scenario: Shields PoE-powered switch ports and base station RF module power inputs from lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on 48 V DC input, coordinated with upstream GDT or MOV for staged protection. Use Value: Absorbs 600 W pulses without degradation, maintaining VWM stability across 1000+ surge events per MIL-STD-883H Method 3015. | Use Scenario: Installed across brush motor terminals in washing machines and HVAC blowers to quench commutation spikes. IC Role / Device Role / Timing Role: Snubber-style TVS parallel to motor winding, clamping inductive kickback during MOSFET turn-off. Use Value: Reduces EMI emissions by limiting dV/dt to <100 V/ns, easing EMC filter design and passing CISPR 11 Class B limits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ39A | Same SMB package, identical VBR range (37.1–41.0 V), but rated for 600 W with 10/1000 μs waveform and not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial designs without AEC compliance requirements | Select SMBJ39A when AEC-Q101 is not mandated and cost sensitivity outweighs qualification assurance |
| TPSMB39CA | Bi-directional variant (VBR ±39 V); same package and power rating but clamps both polarities | Required for AC-coupled or bidirectional signal lines (e.g., RS-485, CAN bus) where negative transients occur | Choose TPSMB39CA only if bidirectional protection is needed; TPSMB39AHE3/5BT is not interchangeable due to polarity mismatch |
Compared with SMBJ39A and TPSMB39CA, the TPSMB39AHE3/5BT provides verified AEC-Q101 qualification and unidirectional clamping optimized for DC power rail protection - making it the preferred choice for automotive OEM and Tier-1 applications requiring traceable reliability evidence and thermal robustness to +185 °C.
Availability
TPSMB39AHE3/5BT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom DC power inputs requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for TPSMB39AHE3/5BT 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, thermal performance, and application-specific validation.
The TPSMB series is part of Vishay's PAR® (Protected Avalanche Rectifier) platform, engineered specifically for high-energy transient suppression in harsh-environment applications including automotive, industrial automation, and infrastructure equipment.
FAQ
What is the exact breakdown voltage range for TPSMB39AHE3/5BT?
The TPSMB39AHE3/5BT has a guaranteed breakdown voltage (VBR) range of 37.1 V to 41.0 V at test current IT = 1 mA, measured per ANSI/IEEE C62.35. This range ensures consistent clamping onset across production lots and supports robust design margins in 36 V nominal systems.
Is TPSMB39AHE3/5BT qualified to AEC-Q101?
Yes, TPSMB39AHE3/5BT is AEC-Q101 qualified. The HE3 suffix denotes RoHS-compliant and AEC-Q101-qualified construction, validated per the full stress test schedule including HTGB, H3TRB, and surge endurance - confirmed in Vishay document 88406 revision 23-Jan-2024.
What does the "HE3/5BT" suffix mean in TPSMB39AHE3/5BT?
The "HE3" indicates RoHS-compliant, AEC-Q101-qualified construction with matte tin-plated leads; "5BT" specifies packaging in 13" diameter tape-and-reel format with 3200 units per reel. This ordering code aligns with Vishay's standard delivery mode I (document 88406, page 3).
Can TPSMB39AHE3/5BT replace SMAJ39A in an existing design?
No - TPSMB39AHE3/5BT uses the larger SMB (DO-214AA) package versus SMAJ39A's SMA (DO-214AC), resulting in different pad layout, thermal mass, and surge current handling. While both are 39 V unidirectional TVS diodes, direct replacement requires PCB modification and revalidation of clamping performance.
What is the maximum clamping voltage of TPSMB39AHE3/5BT at its rated peak pulse current?
The maximum clamping voltage (VC) of TPSMB39AHE3/5BT is 53.9 V at IPPM = 11.1 A using the 10/1000 μs waveform. This value is measured under standardized conditions (25 °C, mounted on 5 mm × 5 mm copper pads) and defines the upper voltage limit imposed on protected circuitry during surge events.
TPSMB39AHE3/5BT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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):
- 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 (SMBJ)
TPSMB39AHE3/5BT FAQ
1.How can I place an order for TPSMB39AHE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB39AHE3/5BT 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 TPSMB39AHE3/5BT reliable?
The price and inventory of TPSMB39AHE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB39AHE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB39AHE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB39AHE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB39AHE3/5BT?
TPSMB39AHE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB39AHE3/5BT 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 TPSMB39AHE3/5BT?
For technical support, including TPSMB39AHE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB39AHE3/5BT requirements.
6.How does Aetrix verify that TPSMB39AHE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB39AHE3/5BT 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 TPSMB39AHE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB39AHE3/5BT?
All TPSMB39AHE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB39AHE3/5BT, 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 TPSMB39AHE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB39AHE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB39AHE3/5BT Tags
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