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Vishay General Semiconductor - Diodes Division TPSMA36HE3_A/H
- Part No.:
- TPSMA36HE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA36HE3_A/H.pdf
- Description:
- TVS DIODE 29.1VWM 52VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,399
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Product details
Overview
TPSMA36HE3_A/H 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 features a 36.0 V breakdown voltage (VBR), 400 W peak pulse power (10/1000 μs), 49.9 V maximum clamping voltage at 8.0 A, 1.0 W steady-state power dissipation, and operates up to +185 °C junction temperature - used in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMA36HE3_A/H datasheet, TPSMA36HE3_A/H pinout, TPSMA36HE3_A/H application, or TPSMA36HE3_A/H equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, AEC-Q101 qualification status, TJ = 185 °C thermal rating, and clamping performance under 10/1000 μs surge conditions.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with optimized junction passivation for stable clamping across temperature. Its unidirectional architecture provides low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and repetitive transients without forward conduction during normal operation.
The device is rated for 40 A non-repetitive peak forward surge current (8.3 ms half-sine), supports 30.8 V stand-off voltage (VWM), and exhibits a +0.090 %/°C temperature coefficient of VBR, ensuring predictable voltage shift over its -65 °C to +185 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 34.2 V / 36.0 V / 37.8 V - precise breakdown threshold ensures reliable triggering before downstream IC damage |
| VWM | 30.8 V - maximum continuous reverse working voltage compatible with 24 V nominal systems |
| VC @ IPPM | 49.9 V at 8.0 A - clamping voltage limits stress on protected circuitry during 400 W transient events |
| PPPM | 400 W (10/1000 μs waveform) - robust surge handling for automotive load-dump and industrial switching noise |
| TJ max. | +185 °C - enables use in high-temperature engine bay and power-conversion environments |
| Polarity | Unidirectional - blocks reverse leakage while conducting only during positive overvoltage excursions |
| AEC-Q101 | Qualified - validated for automotive-grade reliability per stress test requirements |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C reflow), RoHS-compliant and halogen-free (HE3 suffix). Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to protected line; conducts when transient exceeds VBR in reverse bias |
| Anode (non-banded end) | Cathode of internal PN junction | Typically tied to ground or lower-potential rail; completes clamping path during overvoltage |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift ≤ ±5 % over lifetime and temperature cycling |
| 400 W peak pulse power (10/1000 μs) | Supports IEC 61000-4-5 Level 4 surge immunity without derating at TA ≤ 85 °C |
| TJ = 185 °C capability | Permits placement near heat-generating components in automotive ECUs and industrial drives |
| AEC-Q101 qualified (HE3 suffix) | Validated for HTOL, TC, AC/DC HAST, and ESD per AEC standard - no additional qualification needed |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 24 V supply inputs in body control modules against load dump (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between battery rail and DC-DC input. Use Value: Limits transient voltage to ≤49.9 V, preventing damage to LDOs and microcontrollers rated for 36 V absolute max. |
Use Scenario: Shielding analog outputs of pressure sensors from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal line and ground, adjacent to connector. Use Value: Responds in <1 ns to 8 kV contact ESD (IEC 61000-4-2), preserving signal integrity without loading 0–5 V output range. |
| Telecom DC Power Interface | Consumer Device USB Port Protection |
|
Use Scenario: Safeguarding PoE-powered equipment front-end against surges induced on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of hot-swap controller and filter stage. Use Value: Withstands 400 W pulses while maintaining VWM = 30.8 V - sufficient margin above 48 V nominal with ripple. |
Use Scenario: Adding secondary-level surge protection to USB VBUS line in portable speakers and docking stations. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after primary fuse, before USB switch IC. Use Value: Clamps 10/1000 μs transients to 49.9 V, protecting 5.5 V tolerant USB power switches without false triggering. |
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 | Same SMA package, 36 V VBR, but rated for 400 W with 1.0 W PD; not AEC-Q101 qualified | Lacks automotive qualification; suitable for commercial/industrial only | Select if AEC-Q101 is not required and cost sensitivity outweighs qualification needs |
| TPSMA36AHM3_A/H | Identical electrical specs and AEC-Q101 qualification; HM3 suffix adds halogen-free compliance | No functional difference; preferred where halogen-free materials are mandated (e.g., EU automotive Tier 1) | Choose HM3 version when RoHS + halogen-free + AEC-Q101 are all required simultaneously |
Compared with SMAJ36A and TPSMA36AHM3_A/H, the TPSMA36HE3_A/H delivers identical clamping performance and automotive qualification while offering RoHS compliance without halogen restrictions - making it optimal for general-purpose AEC-Q101 applications where material content flexibility is acceptable.
Availability
TPSMA36HE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom DC power inputs, and consumer USB power protection requiring stable component supply and long-term lifecycle support.
Supply support for TPSMA36HE3_A/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, MOSFETs, and protection devices with emphasis on reliability, thermal performance, and automotive-grade validation.
The TPSMA36HE3_A/H belongs to Vishay's PAR® family of high-temperature TVS diodes, engineered specifically for robust transient suppression in harsh-environment applications including engine control, ADAS power supplies, and industrial motor drives.
FAQ
What is the maximum clamping voltage of the TPSMA36HE3_A/H under surge conditions?
The TPSMA36HE3_A/H has a maximum clamping voltage (VC) of 49.9 V at 8.0 A peak pulse current (IPPM) using the 10/1000 μs waveform. This value is measured per JEDEC standards and ensures protected circuits remain below critical voltage thresholds during standardized surge events. The TPSMA36HE3_A/H maintains this clamping performance across its full operating temperature range.
Is the TPSMA36HE3_A/H qualified for automotive applications?
Yes, the TPSMA36HE3_A/H is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HE3". It undergoes stress testing including high-temperature operating life, temperature cycling, and ESD per AEC-Q101 Rev G. This makes the TPSMA36HE3_A/H suitable for under-hood and chassis-mounted automotive electronics without additional qualification.
What does the "HE3" suffix indicate in TPSMA36HE3_A/H?
The "HE3" suffix in TPSMA36HE3_A/H denotes RoHS-compliant construction and AEC-Q101 qualification. It distinguishes this variant from non-automotive versions (e.g., base TPSMA36A) and confirms compliance with JESD201 Class 2 whisker resistance and J-STD-020 MSL Level 1 reflow profile. The "A/H" denotes revision level and packaging format (7" tape and reel).
How does the TPSMA36HE3_A/H compare to bidirectional TVS diodes in circuit design?
The TPSMA36HE3_A/H is unidirectional, meaning it conducts only during positive transients relative to its cathode - ideal for DC power rail protection where reverse polarity is not expected. Unlike bidirectional variants, it offers lower leakage at VWM (1.0 μA max) and avoids unnecessary conduction during normal negative excursions. Use TPSMA36HE3_A/H where system topology is strictly DC-unipolar.
What is the thermal derating behavior of the TPSMA36HE3_A/H above 25 °C ambient?
The TPSMA36HE3_A/H follows standard derating curves per Figure 2 in its datasheet: peak pulse power decreases linearly above 25 °C ambient, reaching ~50 % of 400 W at +125 °C case temperature. Steady-state power dissipation (PD = 1.0 W) also derates to zero at +185 °C junction temperature. Designers must apply PCB copper area (0.2" × 0.2") and consider thermal resistance to ensure TJ stays within limit for the TPSMA36HE3_A/H.
TPSMA36HE3_A/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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 29.1V
- Voltage - Breakdown (Min):
- 32.4V
- Voltage - Clamping (Max) @ Ipp:
- 52V
- Current - Peak Pulse (10/1000µs):
- 7.7A
- 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)
TPSMA36HE3_A/H FAQ
1.How can I place an order for TPSMA36HE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA36HE3_A/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 TPSMA36HE3_A/H reliable?
The price and inventory of TPSMA36HE3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA36HE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMA36HE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA36HE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA36HE3_A/H?
TPSMA36HE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA36HE3_A/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 TPSMA36HE3_A/H?
For technical support, including TPSMA36HE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA36HE3_A/H requirements.
6.How does Aetrix verify that TPSMA36HE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMA36HE3_A/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 TPSMA36HE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMA36HE3_A/H?
All TPSMA36HE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA36HE3_A/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 TPSMA36HE3_A/H part is unused and in its original packaging.
Return procedure for TPSMA36HE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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