My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMA27HE3_A/I
- Part No.:
- TPSMA27HE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA27HE3_A/I.pdf
- Description:
- TVS DIODE 21.8VWM 39.1VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,834
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMA27HE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, rated for 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 37.5 V clamping voltage (VC) at 10.7 A peak pulse current, and 400 W peak pulse power (10/1000 µs). It operates up to 185 °C junction temperature and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the TPSMA27HE3_A/I datasheet, TPSMA27HE3_A/I pinout, TPSMA27HE3_A/I application, or TPSMA27HE3_A/I equivalent, key selection criteria include unidirectional clamping behavior, 1.0 W steady-state power dissipation, MSL Level 1 moisture sensitivity, and compatibility with high-reliability PCB layouts using 5.0 mm × 5.0 mm copper pads per terminal.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to deliver stable clamping under repetitive transients. Its 185 °C maximum junction temperature enables operation in under-hood automotive environments and industrial power supply rails where thermal derating is critical.
The device exhibits low incremental surge resistance and fast response time-typical of silicon avalanche diodes-ensuring sub-nanosecond reaction to ESD and lightning-induced surges. Clamping performance is specified at 10.7 A IPPM with VC = 37.5 V, directly supporting IEC 61000-4-2 and ISO 7637-2 compliance in signal and power line protection.
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 avalanche onset threshold for reliable overvoltage triggering |
| VWM | 23.1 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 37.5 V at 10.7 A - clamped voltage during 400 W transient, limiting downstream IC stress |
| PPPM | 400 W (10/1000 µs waveform) - peak surge energy handling capacity for lightning and inductive switching events |
| TJ max. | +185 °C - supports placement near heat sources in automotive ECUs and industrial motor drives |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation on PCB |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; compatible with standard SMT reflow up to 260 °C peak |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by color band. Complies with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current sink path during forward conduction | Connected to protected line (e.g., 24 V rail); conducts surge current into ground when clamping |
| Cathode | Reference node tied to system ground or return path | Must be connected to low-impedance ground plane; polarity marking ensures correct PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Reduces parameter drift over temperature and lifetime; maintains VBR stability across -65 °C to +185 °C |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive-grade reliability including HTOL, TC, and HAST testing per stress test conditions |
| 400 W peak pulse power (10/1000 µs) | Withstands repeated load-dump and ISO 7637-2 Pulse 5a/b transients without degradation |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin |
| MSL Level 1, 260 °C peak reflow | Eliminates bake-out requirement; supports single-pass assembly in high-volume automotive manufacturing |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed control modules from load dump and alternator transients in engine control units and body controllers. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between power rail and chassis ground. Use Value: Limits voltage to ≤37.5 V during 400 W surges, preventing damage to MCU power supplies and CAN transceivers rated for 36 V absolute max. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation systems. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on differential or single-ended signal lines upstream of ADC inputs. Use Value: Clamps fast transients while maintaining signal integrity due to minimal parasitic capacitance and sub-ns response. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
Use Scenario: Safeguarding PoE-powered network switches and base station RF modules from lightning-induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary overvoltage clamp on DC input stage, coordinated with upstream fuses and secondary filtering. Use Value: Withstands repetitive 10/1000 µs surges up to 400 W without parametric shift, ensuring long-term field reliability. | Use Scenario: Adding robustness to USB-C power delivery circuits in laptops and docking stations against hot-plug and ESD events. IC Role / Device Role / Timing Role: Secondary-level TVS on VBUS line, placed after primary fuse and before buck converter input. Use Value: Provides 37.5 V clamping at 10.7 A with 185 °C TJ rating, enabling compact layout near high-power USB PD ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ28A | VBR = 29.1–32.2 V; VC = 45.4 V at 8.8 A; same SMA package | Higher clamping voltage reduces protection margin for 24 V systems; lower IPPM limits surge energy handling | Select SMAJ28A only if higher VWM (24.3 V) is required and clamping margin allows ≥45 V downstream tolerance |
| 1.5SMC27A | VBR = 25.7–28.4 V; VC = 43.0 V at 9.3 A; larger SMC (DO-214AB) package | Same electrical specs but 2.5× larger footprint; not drop-in compatible with SMA pad layout | Choose 1.5SMC27A only when higher thermal mass is needed for sustained surge duty cycles or board space permits larger package |
Compared with SMAJ28A and 1.5SMC27A, the TPSMA27HE3_A/I delivers tighter VBR tolerance, lower clamping voltage (37.5 V vs. ≥43 V), and AEC-Q101 qualification in the smallest standard surface-mount TVS package-making it optimal for space-constrained, high-reliability 24 V automotive and industrial designs.
Availability
TPSMA27HE3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom DC input surge suppression requiring stable component supply, AEC-Q101 compliance, and high-temperature operational capability.
Supply support for TPSMA27HE3_A/I 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, thermal performance, and automotive qualification.
The TPSMA series belongs to Vishay's PAR® (Protected Avalanche Rectifier) transient voltage suppressor product line, engineered specifically for high-temperature, high-reliability surge protection in automotive, industrial, and telecom infrastructure applications.
FAQ
What is the exact breakdown voltage range for TPSMA27HE3_A/I?
The TPSMA27HE3_A/I 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 tight 10% tolerance ensures consistent clamping behavior across production lots and temperature extremes up to 185 °C junction temperature.
Is TPSMA27HE3_A/I suitable for automotive applications?
Yes, TPSMA27HE3_A/I is AEC-Q101 qualified and carries the HE3 suffix indicating RoHS-compliant, automotive-grade construction. It meets stringent stress tests including high-temperature operating life, temperature cycling, and humidity bias, making it suitable for engine control units, body electronics, and ADAS power domains.
What is the clamping voltage of TPSMA27HE3_A/I at its rated peak pulse current?
The TPSMA27HE3_A/I clamps to a maximum of 37.5 V at its rated peak pulse current of 10.7 A (10/1000 µs waveform). This value is measured under standardized conditions with 5.0 mm × 5.0 mm copper pads per terminal and defines the upper voltage limit imposed on protected circuitry during surge events.
Does TPSMA27HE3_A/I have bidirectional or unidirectional polarity?
TPSMA27HE3_A/I is unidirectional only, with cathode marked by a color band. It conducts and clamps only during positive transients applied to the anode relative to cathode. For bidirectional protection, two devices must be used in series opposition or a dedicated bidirectional TVS (e.g., TPSMA27CA) selected instead.
What is the maximum steady-state power dissipation for TPSMA27HE3_A/I?
The TPSMA27HE3_A/I has a maximum steady-state power dissipation (PD) of 1.0 W at 25 °C ambient. Derating is required above 25 °C per Figure 2 in the datasheet, with zero power capability at 185 °C junction temperature-consistent with its high-temperature design envelope.
TPSMA27HE3_A/I 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):
- 21.8V
- Voltage - Breakdown (Min):
- 24.3V
- Voltage - Clamping (Max) @ Ipp:
- 39.1V
- Current - Peak Pulse (10/1000µs):
- 10.2A
- 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)
TPSMA27HE3_A/I FAQ
1.How can I place an order for TPSMA27HE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA27HE3_A/I 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 TPSMA27HE3_A/I reliable?
The price and inventory of TPSMA27HE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA27HE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMA27HE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA27HE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA27HE3_A/I?
TPSMA27HE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA27HE3_A/I 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 TPSMA27HE3_A/I?
For technical support, including TPSMA27HE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA27HE3_A/I requirements.
6.How does Aetrix verify that TPSMA27HE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMA27HE3_A/I 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 TPSMA27HE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMA27HE3_A/I?
All TPSMA27HE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA27HE3_A/I, 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 TPSMA27HE3_A/I part is unused and in its original packaging.
Return procedure for TPSMA27HE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA27HE3_A/I 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 …
