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Vishay General Semiconductor - Diodes Division TPSMA18A61HE3J_B/H
- Part No.:
- TPSMA18A61HE3J_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA18A61HE3J_B/H.pdf
- Description:
- TVS DIODE 400W SMA DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,879
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Product details
Overview
TPSMA18A61HE3J_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 18 V breakdown voltage (VBR = 17.1–18.9 V at 1 mA), 400 W peak pulse power (10/1000 µs), and 15.9 V clamping voltage at 5.0 A surge current - used to protect MOSFETs and signal lines in automotive sensor units against inductive switching transients.
For engineers reviewing the TPSMA18A61HE3J_B/H datasheet, TPSMA18A61HE3J_B/H pinout, TPSMA18A61HE3J_B/H application, or TPSMA18A61HE3J_B/H equivalent, key selection criteria include unidirectional polarity, TJ = 185 °C operation, AEC-Q101 qualification, low clamping ratio (VC/VBR ≈ 0.89), and MSL Level 1 moisture sensitivity rating.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuit nodes, leveraging passivated anisotropic rectifier technology to achieve fast response time (<1 ns) and low incremental surge resistance. Its 185 °C maximum junction temperature enables use in under-hood automotive environments without derating penalties.
The device is specified for 10/1000 µs waveform testing per ANSI/IEEE C62.35, with 400 W peak pulse power dissipation on 0.2" × 0.2" copper pads and 1.0 W steady-state power handling at 25 °C ambient. It meets JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 17.1 V / 18.0 V / 18.9 V at 1.0 mA - defines precise voltage threshold where avalanche conduction begins under transient stress |
| VWM | 15.3 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA at 25 °C |
| VC @ IPPM | 25.5 V at 5.0 A - clamped voltage during full-rated 400 W surge, limiting downstream voltage stress |
| PPPM | 400 W (10/1000 µs) - peak transient energy absorption capability without failure under standard lightning/inductive test waveform |
| TJ max. | +185 °C - enables high-reliability operation in automotive engine control modules and industrial motor drives |
| Polarity | Unidirectional - protects only against positive transients relative to cathode; requires correct orientation in PCB layout |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; safe for reflow up to 260 °C peak without baking |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by color band. Compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current return path | Connected to protected line's ground or low-side reference; carries full surge current during clamping |
| Cathode | Clamping voltage reference node | Connected to protected IC/MOSFET input or supply rail; establishes VC ceiling during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift <±5% over lifetime and 185 °C operation without parametric shift |
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTGB, HTRB, and temperature cycling per AEC specification |
| Low clamping ratio (VC/VBR) | ≈0.89 - minimizes voltage overshoot margin required in protected circuit design |
| 400 W peak pulse power | Supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out on 5 mm × 5 mm copper pads |
| MSL Level 1 rating | Eliminates pre-reflow baking step and supports standard SMT assembly flow without moisture-related popcorning risk |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Signal Interface |
|---|---|
Use Scenario: Protecting CAN transceiver inputs and microcontroller GPIOs from load-dump and inductive kickback in 12 V vehicle systems. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly across protected pins to clamp surges below IC absolute maximum ratings. Use Value: Enables compliance with ISO 7637-2 Pulse 5a (load dump) and Pulse 1 (inductive switch-off) without external series impedance. | Use Scenario: Safeguarding encoder feedback lines and analog sensor outputs in variable-frequency drives exposed to EMI and relay switching noise. IC Role / Device Role / Timing Role: Parallel-connected clamping device that diverts surge energy away from precision op-amps and ADC front-ends. Use Value: Maintains signal integrity by limiting transient-induced offset errors and preventing latch-up in 24 V industrial I/O circuits. |
| Consumer Appliance Power Supply Input | Telecom Base Station DC Power Rail |
Use Scenario: Suppressing line-to-line and line-to-ground surges on AC/DC converter primary-side rectifier outputs in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Secondary-side TVS protecting bulk capacitor charging paths and controller ICs from reflected transients. Use Value: Extends mean time between failures (MTBF) by absorbing repetitive 100–400 W surges without degradation over 10+ year service life. | Use Scenario: Guarding 48 V DC distribution rails feeding RF power amplifiers and digital baseband processors against lightning-induced surges. IC Role / Device Role / Timing Role: High-energy clamping element mounted at board entry point to shunt >1 kA surge currents before reaching sensitive subsystems. Use Value: Achieves IEC 61000-4-5 Level 4 immunity with single-device solution due to 400 W rating and low VC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A | Same SMA package, 18 V VBR, but rated for 400 W with 8.3 ms half-sine waveform (not 10/1000 µs); lower clamping voltage (23.2 V @ 5.0 A) | Preferred for legacy designs using JEDEC-standard surge waveforms; less suitable for IEC 61000-4-5 compliance verification | Select SMAJ18A if system-level testing uses 8.3 ms surge; choose TPSMA18A61HE3J_B/H for standardized 10/1000 µs validation and AEC-Q101 traceability. |
| SMCJ18A | Larger SMC (DO-214AB) package, same 18 V VBR, higher 1500 W peak power rating; 10x higher thermal mass and 2× footprint area | Used where PCB space permits and higher surge margin is needed; not drop-in compatible due to different pad layout and mounting dimensions | Choose SMCJ18A for industrial power supplies requiring >1 kA surge handling; retain TPSMA18A61HE3J_B/H for space-constrained automotive modules needing AEC-Q101 and MSL Level 1. |
Compared with SMAJ18A and SMCJ18A, the TPSMA18A61HE3J_B/H delivers optimal balance of AEC-Q101 qualification, MSL Level 1 process compatibility, and 10/1000 µs waveform-specific 400 W rating - making it the preferred choice for new automotive sensor designs where footprint, reliability, and standardized test alignment are jointly critical.
Availability
TPSMA18A61HE3J_B/H is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive interfaces, and telecom DC power rail protection requiring stable component supply and full AEC-Q101 traceability.
Supply support for TPSMA18A61HE3J_B/H 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 automotive-grade performance.
The TPSMAxxA family was designed specifically for robust transient suppression in harsh-environment applications - targeting AEC-Q101 compliance, 185 °C operation, and standardized 10/1000 µs surge immunity in compact SMA packages.
FAQ
What is the exact breakdown voltage range for TPSMA18A61HE3J_B/H?
The TPSMA18A61HE3J_B/H has a guaranteed breakdown voltage range of 17.1 V to 18.9 V at 1.0 mA test current, per Vishay Document Number 88405. This VBR window ensures consistent clamping behavior across production lots and supports reliable design margining for 15.3 V stand-off voltage applications. The nominal value is 18.0 V.
Is TPSMA18A61HE3J_B/H qualified to AEC-Q101?
Yes, TPSMA18A61HE3J_B/H is AEC-Q101 qualified, as confirmed by its HE3 suffix and explicit statement in the Vishay datasheet (Rev. 23-Jan-2024, Doc. 88405). This qualification covers stress tests including high-temperature reverse bias, high-temperature operating life, and temperature cycling - validating suitability for automotive under-hood applications.
What does the "HE3" and "B/H" suffix mean in TPSMA18A61HE3J_B/H?
The "HE3" suffix denotes RoHS-compliant, AEC-Q101-qualified construction with matte tin plating and JESD201 Class 2 whisker resistance. "B/H" indicates revision B and packaging in 7" diameter tape-and-reel (H = 1800 units per reel), per Vishay's ordering information table in Document 88405.
Can TPSMA18A61HE3J_B/H replace older TPSMA18A variants in existing designs?
Yes, TPSMA18A61HE3J_B/H is a direct replacement for prior TPSMA18A versions with HE3 suffixes, maintaining identical electrical specs, SMA (DO-214AC) package dimensions, and pinout. No PCB changes are required, and the improved 185 °C TJ rating and MSL Level 1 rating provide backward-compatible reliability enhancements.
What is the maximum clamping voltage of TPSMA18A61HE3J_B/H at rated surge current?
The maximum clamping voltage (VC) of TPSMA18A61HE3J_B/H is 25.5 V at 5.0 A peak pulse current (IPPM), measured under 10/1000 µs waveform conditions. This value is critical for ensuring protected ICs remain within their absolute maximum voltage ratings during surge events.
TPSMA18A61HE3J_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 15.3V
- Voltage - Breakdown (Min):
- 17.1V
- Voltage - Clamping (Max) @ Ipp:
- 25.5V
- Current - Peak Pulse (10/1000µs):
- 15.9A
- Power - Peak Pulse:
- 400W
- 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-214AC (SMA)
TPSMA18A61HE3J_B/H FAQ
1.How can I place an order for TPSMA18A61HE3J_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA18A61HE3J_B/H 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 TPSMA18A61HE3J_B/H reliable?
The price and inventory of TPSMA18A61HE3J_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA18A61HE3J_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA18A61HE3J_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA18A61HE3J_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA18A61HE3J_B/H?
TPSMA18A61HE3J_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA18A61HE3J_B/H 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 TPSMA18A61HE3J_B/H?
For technical support, including TPSMA18A61HE3J_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA18A61HE3J_B/H requirements.
6.How does Aetrix verify that TPSMA18A61HE3J_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA18A61HE3J_B/H 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 TPSMA18A61HE3J_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA18A61HE3J_B/H?
All TPSMA18A61HE3J_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA18A61HE3J_B/H, 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 TPSMA18A61HE3J_B/H part is unused and in its original packaging.
Return procedure for TPSMA18A61HE3J_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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