My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMA27AHE3_A/H
- Part No.:
- TPSMA27AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA27AHE3_A/H.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,664
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMA27AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 27 V nominal breakdown voltage (VBR), 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_A/H datasheet, TPSMA27AHE3_A/H pinout, TPSMA27AHE3_A/H application, or TPSMA27AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, 1.0 W steady-state power dissipation, and compatibility with high-reliability PCB layouts using 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge conditions. Its 10/1000 µs waveform response supports 400 W peak pulse power with 0.01 % duty cycle, and its low incremental surge resistance ensures minimal voltage overshoot during fast transients like ESD or inductive switching spikes.
The device is rated for TJ = –65 °C to +185 °C, enabling use in under-hood automotive environments. With 23.1 V stand-off voltage (VWM) and only 1.0 µA max reverse leakage at VWM, it provides reliable blocking before clamping activation while maintaining low standby power loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 25.7 V / 27.0 V / 28.4 V - defines precise clamping onset threshold across production lot and temperature |
| VWM | 23.1 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR |
| VC @ IPPM | 37.5 V at 10.7 A - peak clamped voltage during 400 W transient; determines protected IC's voltage stress limit |
| PPPM | 400 W (10/1000 µs) - surge energy handling capacity; validates suitability for ISO 7637-2 Pulse 1/2a/5a compliance |
| TJ max. | +185 °C - enables placement near hot components (e.g., power MOSFETs, DC/DC converters) without derating |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation in circuit |
| MSL Level | Level 1 (J-STD-020) - supports standard reflow without moisture sensitivity concerns; no bake required pre-assembly |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with matte tin-plated leads. Cathode indicated by color band; terminals are solderable per J-STD-002 and JESD 22-B102. Meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., GND or return path); defines directionality of transient suppression |
| Cathode | Current exit point during forward conduction; clamping node | Connected to protected line (e.g., 24 V rail); absorbs surge energy when voltage exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR and low leakage over 15+ years in automotive under-hood thermal cycling |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade reliability including HTOL, TC, and ESD testing per stress test plan |
| 400 W peak pulse power (10/1000 µs) | Withstands repeated load-dump surges (ISO 7637-2 Pulse 5a) without degradation |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving system-level immunity |
| 185 °C maximum junction temperature | Eliminates need for thermal derating in engine control units (ECUs) operating at ambient >125 °C |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 24 V supply rails in engine control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and ground to clamp positive transients above 27 V. Use Value: Limits rail voltage to ≤37.5 V during 400 W surges, preventing damage to downstream PMICs and microcontrollers rated for 40 V absolute max. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between signal and ground to absorb sub-100 ns transients without distorting low-bandwidth signals. Use Value: Maintains signal integrity with <1.0 µA leakage at 23.1 V, while clamping ESD pulses to safe levels for precision op-amps and ADC inputs. |
| Telecom DC Power Input Protection | Computer Peripheral USB VBUS Line Protection |
Use Scenario: Safeguarding -48 V DC input stages of telecom base station power supplies against lightning-induced surges. IC Role / Device Role / Timing Role: Unidirectional TVS configured with cathode to -48 V rail and anode to chassis ground to suppress negative-going transients. Use Value: Delivers 400 W surge capability with 185 °C operation, ensuring long-term reliability in outdoor cabinets exposed to wide ambient swings. | Use Scenario: Adding secondary overvoltage protection on USB 2.0 VBUS lines in docking stations subjected to hot-plug inrush and adapter faults. IC Role / Device Role / Timing Role: Standoff-rated TVS placed upstream of USB power switches to prevent latch-up or burnout during 20 V fault events. Use Value: Provides 23.1 V VWM margin above 5 V nominal, enabling clean blocking during normal operation while clamping faults within 1 ns. |
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 = 29.4–32.7 V (higher), VC = 45.4 V at 8.8 A, same SMA package | Higher clamping voltage reduces margin for 33 V-tolerant ICs; better suited for 36 V systems | Select SMAJ28A only if system VMAX > 45 V and higher VBR improves noise immunity |
| SMCJ28A | Same VBR/VC specs but in larger SMC (DO-214AB) package; 1500 W PPPM | Requires PCB real estate increase (~2× footprint); used where higher single-pulse robustness is mandatory | Choose SMCJ28A when surge threat level exceeds 400 W or layout allows larger package |
Compared with SMAJ28A and SMCJ28A, the TPSMA27AHE3_A/H offers tighter VBR tolerance (±5 % vs. ±10 %), lower clamping voltage (37.5 V vs. 45.4 V), and AEC-Q101 qualification out-of-box - making it optimal for space-constrained, high-reliability 24 V automotive and industrial designs.
Availability
TPSMA27AHE3_A/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, telecom power supplies, and computer peripheral protection requiring stable component supply and AEC-Q101 traceability.
Supply support for TPSMA27AHE3_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, TVS devices, and optoelectronics with emphasis on reliability and high-temperature performance.
The TPSMAxxA family was engineered specifically for AEC-Q101-compliant transient suppression in harsh-environment applications - prioritizing thermal stability, surge repeatability, and solder-joint integrity in automated SMT assembly.
FAQ
What is the exact breakdown voltage range for TPSMA27AHE3_A/H?
The TPSMA27AHE3_A/H has a guaranteed breakdown voltage (VBR) range of 25.7 V (minimum) to 28.4 V (maximum) at 1.0 mA test current, with 27.0 V nominal. This tight ±5 % tolerance ensures predictable clamping behavior across temperature and production lots, critical for protecting 24 V systems where overvoltage margins are narrow.
Is TPSMA27AHE3_A/H qualified for automotive use?
Yes, the TPSMA27AHE3_A/H carries the HE3 suffix, indicating full AEC-Q101 qualification per Vishay's certification. It has passed stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and ESD (HBM ≥8 kV), making it approved for use in engine control units, body electronics, and ADAS modules without additional qualification.
What is the maximum clamping voltage of TPSMA27AHE3_A/H and at what current?
The TPSMA27AHE3_A/H clamps to a maximum of 37.5 V at 10.7 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a 400 W transient event, directly determining whether downstream components remain within their absolute maximum ratings.
Does TPSMA27AHE3_A/H have a bidirectional configuration option?
No, TPSMA27AHE3_A/H is unidirectional only, as confirmed in the Vishay datasheet. It protects against positive transients only (cathode to line, anode to ground). For bidirectional protection, Vishay offers the TPSMA27CA series - a separate part number with symmetrical breakdown in both polarities.
What is the thermal derating behavior of TPSMA27AHE3_A/H above 25 °C ambient?
The TPSMA27AHE3_A/H follows standard derating curves per Figure 2 of the datasheet: peak pulse power decreases linearly from 400 W at 25 °C to ~200 W at 125 °C ambient. Its 185 °C maximum junction temperature allows operation in high-ambient zones, but PCB copper pad area (0.2" × 0.2") must be maintained to sustain thermal performance.
TPSMA27AHE3_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):
- 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_A/H FAQ
1.How can I place an order for TPSMA27AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA27AHE3_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 TPSMA27AHE3_A/H reliable?
The price and inventory of TPSMA27AHE3_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 TPSMA27AHE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMA27AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA27AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA27AHE3_A/H?
TPSMA27AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA27AHE3_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 TPSMA27AHE3_A/H?
For technical support, including TPSMA27AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA27AHE3_A/H requirements.
6.How does Aetrix verify that TPSMA27AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMA27AHE3_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 TPSMA27AHE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMA27AHE3_A/H?
All TPSMA27AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA27AHE3_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 TPSMA27AHE3_A/H part is unused and in its original packaging.
Return procedure for TPSMA27AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA27AHE3_A/H 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 …
