My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMA12HE3/61T
- Part No.:
- TPSMA12HE3/61T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA12HE3/61T.pdf
- Description:
- TVS DIODE 9.72VWM 17.3VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,561
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMA12HE3/61T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 12.0 V nominal breakdown voltage (VBR), 10.2 V stand-off voltage (VWM), 24.0 V maximum clamping voltage (VC) at 5.0 A peak pulse current, 400 W peak pulse power (10/1000 μs), and operates up to +185 °C junction temperature - ideal for automotive power rail protection.
For engineers reviewing the TPSMA12HE3/61T datasheet, TPSMA12HE3/61T pinout, TPSMA12HE3/61T application, or TPSMA12HE3/61T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification status, clamping performance under 10/1000 μs surge, thermal derating above 25 °C, and compatibility with automated SMT assembly per J-STD-002.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve low incremental surge resistance and excellent clamping linearity during fast transient events. Its junction design supports stable operation up to TJ = 185 °C, enabling use in high-temperature automotive engine compartments and industrial motor drives.
The device responds within picoseconds to ESD and lightning-induced surges, with clamping voltage tightly specified at 24.0 V (max) under 5.0 A IPPM. It meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 - confirming suitability for automotive-grade reliability requirements without additional qualification testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 11.4 V / 12.0 V / 12.6 V at 1.0 mA - defines precise voltage threshold where avalanche conduction begins reliably |
| VWM | 10.2 V - maximum continuous reverse voltage before leakage exceeds 1.0 μA, sets safe operating margin below VBR |
| VC @ IPPM | 24.0 V at 5.0 A - clamping voltage during 10/1000 μs surge, determines protected circuit's worst-case overvoltage exposure |
| PPPM | 400 W - peak pulse power handling capability, defines survivability against standardized lightning/surge waveforms |
| TJ max. | +185 °C - enables deployment in under-hood automotive environments and high-power industrial enclosures without thermal derating failure |
| Polarity | Unidirectional - protects only against positive transients relative to cathode; requires correct orientation in series with power/signal line |
| Package | SMA (DO-214AC) - industry-standard SMT outline with 0.208" x 0.157" footprint, compatible with standard reflow profiles and pick-and-place equipment |
Pinout & Package
TPSMA12HE3/61T is housed in an SMA (DO-214AC) surface-mount package with two terminals: cathode (marked by color band) and anode. The package conforms to JEDEC DO-214AC mechanical dimensions and supports soldering per J-STD-002.
| 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; polarity must match PCB layout |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane; completes clamping path during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive applications including powertrain and body electronics; eliminates need for customer-level stress screening |
| 185 °C junction rating | Enables operation in high-ambient environments such as engine control units and DC-DC converters without thermal shutdown |
| 400 W peak pulse power (10/1000 μs) | Withstands IEC 61000-4-5 Level 4 surge events (4 kV line-to-ground) when properly mounted on 5.0 mm × 5.0 mm copper pads |
| Low clamping ratio (VC/VBR ≈ 2.0) | Minimizes overvoltage stress on downstream ICs like MCUs and CAN transceivers during transient suppression |
| MSL Level 1 moisture sensitivity | Allows indefinite floor life before reflow; no baking required prior to assembly - reduces manufacturing overhead |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed between power input and LDO/regulator input stage. Use Value: Limits transient voltage to ≤24.0 V, preventing damage to 3.3 V/5 V logic supplies and ensuring functional safety compliance per ISO 7637-2. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and switching noise in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on differential or single-ended signal traces adjacent to motor drives. Use Value: Clamps sub-100 ns ESD events to <24 V while adding <1 pF parasitic capacitance - preserving signal integrity up to 10 MHz bandwidth. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
|
Use Scenario: Safeguarding PoE-powered network switches and base stations against lightning-induced surges on 48 V DC inputs. IC Role / Device Role / Timing Role: First-line transient suppressor upstream of DC-DC converter and hot-swap controller. Use Value: Absorbs 400 W surge energy without degradation, maintaining >100,000 surge cycles per MIL-STD-883H Method 3015.8. |
Use Scenario: Adding robustness to USB-C power delivery circuits in laptops and docking stations exposed to user-handling ESD. IC Role / Device Role / Timing Role: Unidirectional TVS on VBUS line to clamp contact discharge events per IEC 61000-4-2 Level 4 (±15 kV air). Use Value: Achieves <100 ps response time and <24 V clamping, preventing latch-up in USB PD controllers and protecting Type-C CC logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Same SMA package, 12 V VBR, but rated for 400 W with 1.0 mA test current; lower VC = 19.9 V at 21.6 A; not AEC-Q101 qualified | Preferred for cost-sensitive industrial designs where automotive qualification is unnecessary | Select SMAJ12A when AEC-Q101 is not required and lower clamping voltage at higher current is prioritized |
| TPSMA12AHM3/61T | Identical electrical specs and AEC-Q101 qualification; differs only in halogen-free molding compound (HM3 suffix vs HE3) | Required for RoHS-compliant, halogen-free BOMs in EU automotive programs | Choose TPSMA12AHM3/61T when material compliance mandates halogen-free construction per IEC 61249-2-21 |
Compared with SMAJ12A and TPSMA12AHM3/61T, the TPSMA12HE3/61T provides identical surge performance and automotive qualification while using standard RoHS-compliant (non-halogen-free) epoxy - making it optimal for legacy automotive platforms where HM3 is not mandated.
Availability
TPSMA12HE3/61T is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply across multi-year production cycles.
Supply support for TPSMA12HE3/61T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and high-temperature performance.
The TPSMA12HE3/61T belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for robust overvoltage protection in harsh automotive and industrial environments where thermal stability and AEC-Q101 compliance are mandatory.
FAQ
What is the breakdown voltage tolerance for TPSMA12HE3/61T?
The TPSMA12HE3/61T has a breakdown voltage (VBR) range of 11.4 V (min) to 12.6 V (max) at 1.0 mA test current, with 12.0 V as the nominal value. This ±5% tolerance ensures consistent clamping behavior across production lots and supports reliable design margining in automotive and industrial applications where precise overvoltage thresholds are critical.
Is TPSMA12HE3/61T suitable for bidirectional transient protection?
No, TPSMA12HE3/61T is unidirectional only - it clamps positive transients relative to its cathode terminal and blocks reverse voltage up to 10.2 V. For bidirectional protection (e.g., AC lines or data buses), a separate device such as the SMBJ12CA or a dual-diode configuration is required. The TPSMA12HE3/61T datasheet explicitly states "Available in uni-directional polarity only."
Does TPSMA12HE3/61T require derating at elevated ambient temperatures?
Yes, TPSMA12HE3/61T must be derated above TA = 25 °C per Figure 2 in the datasheet. At 125 °C ambient, its peak pulse power drops to ~220 W (55% of 400 W), and at 150 °C, it falls to ~140 W. Designers must apply this derating curve when deploying TPSMA12HE3/61T in high-temperature enclosures or near heat sources to ensure sustained surge survivability.
What is the maximum clamping voltage of TPSMA12HE3/61T under surge conditions?
The maximum clamping voltage (VC) of TPSMA12HE3/61T is 24.0 V when subjected to a 5.0 A peak pulse current with a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 test conditions and defines the upper voltage limit imposed on protected circuitry during standardized surge events - critical for ensuring downstream ICs remain within absolute maximum ratings.
How does the HE3 suffix affect the specifications of TPSMA12HE3/61T?
HE3 denotes RoHS-compliant construction and AEC-Q101 qualification - both confirmed in the Vishay datasheet. It does not alter electrical parameters versus non-HE3 variants; instead, it certifies that TPSMA12HE3/61T meets automotive reliability standards and environmental compliance requirements, including matte tin plating, JESD201 Class 2 whisker resistance, and MSL Level 1 handling.
TPSMA12HE3/61T 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):
- 9.72V
- Voltage - Breakdown (Min):
- 10.8V
- Voltage - Clamping (Max) @ Ipp:
- 17.3V
- Current - Peak Pulse (10/1000µs):
- 23.1A
- 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)
TPSMA12HE3/61T FAQ
1.How can I place an order for TPSMA12HE3/61T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA12HE3/61T 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 TPSMA12HE3/61T reliable?
The price and inventory of TPSMA12HE3/61T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA12HE3/61T is usually 5 days.
3.What payment methods are accepted for TPSMA12HE3/61T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA12HE3/61T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA12HE3/61T?
TPSMA12HE3/61T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA12HE3/61T 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 TPSMA12HE3/61T?
For technical support, including TPSMA12HE3/61T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA12HE3/61T requirements.
6.How does Aetrix verify that TPSMA12HE3/61T is sourced from the original manufacturer or authorized distributors?
All TPSMA12HE3/61T 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 TPSMA12HE3/61T meets industry standards.
7.What is the process for return or replacement of TPSMA12HE3/61T?
All TPSMA12HE3/61T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA12HE3/61T, 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 TPSMA12HE3/61T part is unused and in its original packaging.
Return procedure for TPSMA12HE3/61T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA12HE3/61T 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 …
