My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMB20HE3/5BT
;;2.jpg)
- Part No.:
- TPSMB20HE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB20HE3/5BT.pdf
- Description:
- TVS DIODE 16.2VWM 29.1VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,879
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMB20HE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching and lightning-induced transients on power rails and signal lines. It delivers 600 W peak pulse power (10/1000 μs), 21.7 A peak pulse current, and clamps at 27.7 V while operating up to +185 °C junction temperature - deployed in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB20HE3/5BT datasheet, TPSMB20HE3/5BT pinout, TPSMB20HE3/5BT application, or TPSMB20HE3/5BT equivalent, key selection criteria include its AEC-Q101 qualification, SMB (DO-214AA) package, 20 V breakdown voltage (VBR = 19–21 V), low 17.1 V stand-off voltage (VWM), and 1 μA max reverse leakage at VWM.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under high-temperature stress (TJ = 185 °C), enabling use in under-hood automotive ECUs and industrial motor drives where thermal derating is critical. Its unidirectional polarity and low incremental surge resistance ensure fast response (<1 ns) and minimal overshoot during 10/1000 μs transients.
The device is rated for 75 A non-repetitive forward surge (8.3 ms half-sine) and exhibits a typical VBR temperature coefficient of +0.082 %/°C, allowing predictable voltage shift across its full -65 °C to +185 °C operating range. It meets MSL Level 1 per J-STD-020 with 260 °C reflow peak tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 19.0–21.0 V at 1 mA - defines precise clamping onset threshold for overvoltage events |
| Stand-off Voltage (VWM) | 17.1 V max - ensures reliable blocking during normal operation without leakage-induced power loss |
| Peak Pulse Power (PPPM) | 600 W (10/1000 μs) - sustains high-energy surges without failure in automotive load-dump scenarios |
| Clamping Voltage (VC) | 27.7 V at 21.7 A - limits downstream IC voltage stress to safe levels during transient suppression |
| Operating Temperature | -65 °C to +185 °C - supports placement near heat sources in engine control modules and industrial inverters |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Package | SMB (DO-214AA) - industry-standard SMD footprint with 0.220" x 0.205" body and matte tin-plated leads |
Pinout & Package
TPSMB20HE3/5BT is housed in an SMB (DO-214AA) surface-mount package with cathode indicated by a color band. The two-terminal device has no internal circuitry beyond the PN junction; polarity is fixed and non-reversible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or lower-potential rail in unidirectional TVS configuration |
| Cathode | Current exit point during forward conduction; clamping node during reverse surge | Connected to protected line (e.g., 24 V supply rail); absorbs transient energy into ground path |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift < ±5 % over 1000 hrs at 150 °C, critical for long-life automotive modules |
| TJ = 185 °C capability | Permits direct placement on hot PCB zones (e.g., near MOSFETs or DC-DC converters) without thermal derating penalties |
| 600 W peak pulse power (10/1000 μs) | Withstands ISO 7637-2 Pulse 5a (load dump) up to 35 V/100 ms without degradation |
| Meets MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without popcorn cracking or delamination |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive applications including engine control, body electronics, and ADAS power domains |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in engine control units (ECUs) against ISO 7637-2 load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and DC-DC input, absorbing >95 % of transient energy before it reaches regulator ICs. Use Value: Prevents latch-up or permanent damage to automotive-grade PMICs and microcontrollers operating at 185 °C ambient. |
Use Scenario: Shielding analog front-end inputs of pressure/temperature sensors in factory automation systems from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector entry point, shunting transients before signal conditioning amplifiers. Use Value: Maintains sub-100 nA leakage at 17.1 V VWM, preserving sensor accuracy while surviving 8 kV contact ESD per IEC 61000-4-2. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding 48 V PoE-powered equipment inputs against lightning-induced surges on outdoor telecom cabinets. IC Role / Device Role / Timing Role: Primary clamping device in multi-stage protection scheme, handling bulk energy before secondary GDT or polymer PTC. Use Value: Clamps to 27.7 V within <1 ns, limiting voltage seen by PoE controller ICs to well below their absolute maximum rating. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home appliances (e.g., vacuum cleaners, washing machines). IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp commutation spikes before they couple into MCU GPIO or power management ICs. Use Value: Withstands repetitive 75 A surge (8.3 ms half-sine), ensuring robustness over 10,000+ motor cycles without parameter shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | Lower PPPM (400 W), higher VC (32.4 V), same SMB package and VBR range | Not AEC-Q101 qualified; suitable for commercial-grade consumer products only | Select when cost sensitivity outweighs automotive reliability requirements and surge energy is ≤400 W |
| SMCJ20A | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VBR/VWM specs | Requires PCB layout change; used where system-level surge immunity exceeds 600 W (e.g., industrial UPS inputs) | Select when higher surge margin is mandatory and board space allows SMC footprint |
Compared with SMAJ20A and SMCJ20A, the TPSMB20HE3/5BT uniquely balances AEC-Q101 qualification, 600 W capability, and SMB footprint - making it optimal for space-constrained automotive and industrial designs requiring certified reliability without package redesign.
Availability
TPSMB20HE3/5BT is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom DC input protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPSMB20HE3/5BT 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 high-reliability and high-temperature performance.
The TPSMB series belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for automotive and industrial environments demanding AEC-Q101 compliance, 185 °C operation, and robust surge immunity in compact SMB packages.
FAQ
What is the exact breakdown voltage range for TPSMB20HE3/5BT?
The TPSMB20HE3/5BT has a guaranteed breakdown voltage (VBR) range of 19.0 V to 21.0 V at 1 mA test current, measured per ANSI/IEEE C62.35. This specification is confirmed in the Vishay datasheet revision 23-Jan-2024 (Document Number: 88406), Table on page 2. The nominal VBR is 20.0 V, and the device maintains this tolerance across its full operating temperature range.
Is TPSMB20HE3/5BT AEC-Q101 qualified?
Yes, TPSMB20HE3/5BT is AEC-Q101 qualified. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified construction, as stated in the Vishay datasheet section "MECHANICAL DATA". This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD, validating its suitability for automotive powertrain and chassis applications.
What is the clamping voltage of TPSMB20HE3/5BT at its rated peak pulse current?
The TPSMB20HE3/5BT clamps to a maximum of 27.7 V at its rated peak pulse current of 21.7 A (10/1000 μs waveform), as specified in the "ELECTRICAL CHARACTERISTICS" table on page 2 of the Vishay datasheet. This clamping voltage defines the upper limit imposed on protected circuitry during surge events and is measured under standardized conditions with 0.2" × 0.2" copper pads.
Does TPSMB20HE3/5BT have bidirectional polarity?
No, TPSMB20HE3/5BT is unidirectional only. The datasheet explicitly states "Available in unidirectional polarity only" under FEATURES, and the device marking code "LGP" and cathode band orientation confirm single-direction conduction. It conducts in forward bias (anode-to-cathode) and clamps in reverse bias - it does not suppress transients on both polarities like a bidirectional TVS.
What is the maximum operating junction temperature for TPSMB20HE3/5BT?
The maximum operating junction temperature (TJmax) for TPSMB20HE3/5BT is +185 °C, as listed in the "PRIMARY CHARACTERISTICS" table and confirmed in the "MAXIMUM RATINGS" section of the Vishay datasheet. This rating enables deployment in high-ambient environments such as engine compartments, motor drive enclosures, and industrial power supplies without thermal derating penalties.
TPSMB20HE3/5BT 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):
- 16.2V
- Voltage - Breakdown (Min):
- 18V
- Voltage - Clamping (Max) @ Ipp:
- 29.1V
- Current - Peak Pulse (10/1000µs):
- 20.6A
- 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)
TPSMB20HE3/5BT FAQ
1.How can I place an order for TPSMB20HE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB20HE3/5BT 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 TPSMB20HE3/5BT reliable?
The price and inventory of TPSMB20HE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB20HE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB20HE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB20HE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB20HE3/5BT?
TPSMB20HE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB20HE3/5BT 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 TPSMB20HE3/5BT?
For technical support, including TPSMB20HE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB20HE3/5BT requirements.
6.How does Aetrix verify that TPSMB20HE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB20HE3/5BT 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 TPSMB20HE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB20HE3/5BT?
All TPSMB20HE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB20HE3/5BT, 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 TPSMB20HE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB20HE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB20HE3/5BT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
