My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMA27AHE3/61T
- Part No.:
- TPSMA27AHE3/61T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA27AHE3/61T.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,723
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMA27AHE3/61T 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 a 27 V nominal breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 37.5 V maximum clamping voltage (VC) at 10.7 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 TPSMA27AHE3/61T datasheet, TPSMA27AHE3/61T pinout, TPSMA27AHE3/61T application, or TPSMA27AHE3/61T equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification (via HE3 suffix), MSL Level 1 rating, and compatibility with high-reliability PCB layouts using 5.0 mm × 5.0 mm copper pads per terminal.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge conditions. Its 185 °C maximum junction temperature and low incremental surge resistance support operation in under-hood automotive environments and industrial power supplies where thermal derating is critical.
The device responds within picoseconds to transients induced by inductive switching or ESD events, maintaining clamping performance across -65 °C to +185 °C. It meets JESD22-B102 whisker testing and J-STD-020 MSL Level 1 (260 °C peak reflow), confirming suitability for automated SMT assembly without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 25.7 V / 27.0 V / 28.4 V at 1 mA - defines precise voltage threshold at which clamping initiates under controlled test conditions |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage exceeds 1 μA, setting safe operating margin below VBR |
| VC @ IPPM | 37.5 V at 10.7 A - peak clamped voltage during 400 W transient, directly limiting stress on downstream ICs or MOSFETs |
| PPPM | 400 W (10/1000 µs waveform) - quantifies surge energy handling capability for lightning and load-switching transients |
| TJ max. | +185 °C - enables use in high-temperature zones like engine control units without thermal shutdown or parameter drift |
| Polarity | Unidirectional - protects only against positive-going transients relative to cathode; requires correct orientation in series with protected line |
| Package | SMA (DO-214AC) - standardized surface-mount outline with 5.28 mm length, 4.50 mm width, and 2.29 mm height for reliable automated placement |
Pinout & Package
SMA (DO-214AC) package with molded epoxy body, matte tin-plated leads, and cathode band marking. Dimensions: 5.28 mm × 4.50 mm × 2.29 mm (L × W × H); recommended pad layout: 5.0 mm × 5.0 mm copper area per terminal.
| 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, requiring external ground path |
| Anode | Reference/return node | Typically tied to system ground or low-impedance return plane; completes clamping path during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling, humidity bias, and mechanical shock per AEC standard |
| Junction temperature capability: -65 °C to +185 °C | Enables deployment in extreme ambient environments without derating penalties or failure risk |
| MSL Level 1, 260 °C peak reflow | Eliminates pre-bake requirements and supports single-pass lead-free reflow in high-volume manufacturing |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection margin for sensitive 3.3 V or 5 V logic |
| Passivated anisotropic rectifier technology | Delivers consistent VBR stability over life and temperature, reducing field failure due to parameter shift |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (up to 60 V, 100 ms) on 12 V battery-fed ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Standby clamping device placed between power input and DC/DC converter input stage. Use Value: Limits peak voltage to ≤37.5 V during ISO 7637-2 Pulse 5a events, preventing damage to downstream LDOs and microcontrollers. | Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loop) from ESD and cable discharge events in factory automation sensors. IC Role / Device Role / Timing Role: Bidirectional transient shunt mounted at connector interface, referenced to local ground. Use Value: Clamps 8 kV contact ESD (IEC 61000-4-2) to <40 V within <1 ns, preserving ADC accuracy and avoiding latch-up in signal conditioning ICs. |
| Telecom DC Power Input Protection | Computer Peripheral USB VBUS Line Protection |
Use Scenario: Guarding 48 V PoE-powered equipment inputs against surges from long Ethernet runs exposed to lightning-induced coupling. IC Role / Device Role / Timing Role: Primary overvoltage clamp upstream of PoE controller and DC/DC stage. Use Value: Absorbs 400 W (10/1000 µs) surges while holding clamped voltage below 40 V, ensuring compliance with IEEE 802.3bt surge immunity requirements. | Use Scenario: Safeguarding USB 2.0 host port VBUS (5 V) against hot-plug inrush and accidental 12 V misconnection in docking stations. IC Role / Device Role / Timing Role: Unidirectional shunt connected between VBUS and GND, sized to survive repeated 1 A inrush peaks. Use Value: Withstands 40 A non-repetitive forward surge (IFSM) and limits clamping to 37.5 V, protecting USB switch ICs rated for 5.5 V absolute maximum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27A | Same VBR range (25.7–28.4 V), but SMB (DO-214AA) package - 20 % larger footprint, 600 W PPPM | Higher power handling suits higher-energy transients; less suitable for space-constrained automotive modules | Select SMBJ27A only if board layout allows larger pad area and surge energy exceeds 400 W |
| SMCJ27A | Same VBR, but SMC (DO-214AB) package - 35 % larger than SMA, 1500 W PPPM, higher IPPM (24.9 A) | Targeted at heavy-duty industrial AC/DC front-ends; over-specified for most automotive signal-line use cases | Choose SMCJ27A when protecting mains-connected subsystems requiring >1 kW surge rating |
Compared with SMBJ27A and SMCJ27A, the TPSMA27AHE3/61T offers optimal balance of compact SMA footprint, AEC-Q101 qualification, and 400 W surge capacity - making it the preferred choice for space-limited, thermally demanding automotive and industrial PCBs where MSL Level 1 and +185 °C operation are mandatory.
Availability
TPSMA27AHE3/61T is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom power input stages, and computer peripheral protection requiring stable component supply with full traceability and lifecycle continuity.
Supply support for TPSMA27AHE3/61T 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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, thermal performance, and automotive qualification.
The TPSMAxxA family is engineered specifically for high-temperature, high-reliability transient suppression in automotive power distribution and industrial control systems - delivering robust clamping under sustained thermal stress and repetitive surge conditions.
FAQ
What is the exact breakdown voltage range for TPSMA27AHE3/61T?
The TPSMA27AHE3/61T has a guaranteed breakdown voltage (VBR) range of 25.7 V to 28.4 V at 1 mA test current, measured per ANSI/IEEE C62.35. This tolerance ensures predictable clamping onset across production lots and temperature extremes, supporting deterministic circuit protection design in safety-critical automotive applications.
Is TPSMA27AHE3/61T qualified for automotive use?
Yes, the TPSMA27AHE3/61T carries the HE3 suffix, indicating full AEC-Q101 qualification per Vishay's documentation (Document Number 88405). It has passed stress tests including temperature cycling, high-temperature reverse bias, and mechanical shock - confirming suitability for under-hood and chassis-mounted automotive electronics.
What does the "61T" suffix mean in TPSMA27AHE3/61T?
The "61T" suffix in TPSMA27AHE3/61T denotes the tape-and-reel packaging configuration: 7-inch diameter reel, 1800 units per reel, with carrier tape conforming to EIA-481-D standards. It is not a functional variant - electrical and thermal specifications match the base TPSMA27AHE3 designation.
Can TPSMA27AHE3/61T be used in bidirectional protection circuits?
No, TPSMA27AHE3/61T is unidirectional only, as explicitly stated in the Vishay datasheet. It clamps positive transients relative to its cathode; for bidirectional protection (e.g., data lines), a pair of devices or a dedicated bidirectional TVS like SMAJ27CA must be used instead.
What is the maximum clamping voltage of TPSMA27AHE3/61T under surge conditions?
The TPSMA27AHE3/61T exhibits a maximum clamping voltage (VC) of 37.5 V at 10.7 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
TPSMA27AHE3/61T 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):
- 23.1V
- Voltage - Breakdown (Min):
- 25.7V
- Voltage - Clamping (Max) @ Ipp:
- 37.5V
- Current - Peak Pulse (10/1000µs):
- 10.7A
- 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)
TPSMA27AHE3/61T FAQ
1.How can I place an order for TPSMA27AHE3/61T through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA27AHE3/61T 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 TPSMA27AHE3/61T reliable?
The price and inventory of TPSMA27AHE3/61T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA27AHE3/61T is usually 5 days.
3.What payment methods are accepted for TPSMA27AHE3/61T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA27AHE3/61T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA27AHE3/61T?
TPSMA27AHE3/61T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA27AHE3/61T 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 TPSMA27AHE3/61T?
For technical support, including TPSMA27AHE3/61T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA27AHE3/61T requirements.
6.How does Aetrix verify that TPSMA27AHE3/61T is sourced from the original manufacturer or authorized distributors?
All TPSMA27AHE3/61T 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 TPSMA27AHE3/61T meets industry standards.
7.What is the process for return or replacement of TPSMA27AHE3/61T?
All TPSMA27AHE3/61T units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA27AHE3/61T, 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 TPSMA27AHE3/61T part is unused and in its original packaging.
Return procedure for TPSMA27AHE3/61T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA27AHE3/61T 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 …
