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Vishay General Semiconductor - Diodes Division TPSMC27AHE3_A/H
- Part No.:
- TPSMC27AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC27AHE3_A/H.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,427
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Product details
Overview
TPSMC27AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-reliability overvoltage protection of sensitive electronics. It features 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 23.1 V stand-off voltage (VWM), 37.5 V clamping voltage (VC) at 40 A peak pulse current, and 1500 W peak pulse power (10/1000 µs). It is AEC-Q101 qualified and rated for TJ = −65 °C to +185 °C, used in automotive power line and sensor interface protection.
For engineers reviewing the TPSMC27AHE3_A/H datasheet, TPSMC27AHE3_A/H pinout, TPSMC27AHE3_A/H application, or TPSMC27AHE3_A/H equivalent, key selection considerations include clamping performance under 40 A surge, unidirectional polarity compatibility with DC-biased lines, thermal derating above 25 °C, and AEC-Q101 qualification status for automotive deployment.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert transient energy away from downstream ICs or MOSFETs. Its junction passivated anisotropic rectifier structure enables stable 185 °C operation and low incremental surge resistance.
It responds in <1 ps to transients induced by inductive switching or ESD, clamping within 37.5 V at 40 A (10/1000 µs waveform), with <1 µA leakage at 23.1 V and <10 µA at 150 °C - critical for low-power sensor signal lines and always-on automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 25.7 / 27.0 / 28.4 V at 1 mA - defines precise avalanche initiation threshold for reliable overvoltage detection |
| VWM | 23.1 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 37.5 V at 40 A - clamping voltage limiting stress on protected circuit during 10/1000 µs surge |
| PPPM | 1500 W - peak transient power handling capability under standardized waveform |
| TJ max. | +185 °C - enables placement near hot components (e.g., power converters, engine control units) |
| AEC-Q101 | Qualified - meets stress test requirements for automotive electronic systems |
| Polarity | Unidirectional - suitable for DC-biased lines where reverse conduction must be blocked |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, MSL Level 1 (260 °C reflow), UL 94 V-0 molding compound. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to system ground or low-side return path in unidirectional TVS configuration |
| Cathode | Current exit terminal during reverse avalanche | Connected to protected line (e.g., 24 V supply rail or CAN-H); color band identifies this end |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivated anisotropic rectifier technology | Enables stable 185 °C operation and consistent VBR drift (<0.087 %/°C) across temperature |
| 1500 W peak pulse power (10/1000 µs) | Withstands automotive load dump and ISO 7637-2 Pulse 5a surges without degradation |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes voltage overshoot on protected nodes, reducing risk to 3.3 V or 5 V logic interfaces |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive under-hood and body-control module applications per stress test requirements |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without preconditioning |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply rails in body control modules against ISO 7637-2 load dump transients up to 100 V. IC Role / Device Role / Timing Role: Shunt TVS diode clamping transient energy to ground during overvoltage events. Use Value: Limits rail voltage to ≤37.5 V during 40 A surge, preventing damage to MCU power supplies and CAN transceivers. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop sensors) from ESD and inductive kickback in factory automation PLCs. IC Role / Device Role / Timing Role: Unidirectional voltage clamp placed between signal line and ground. Use Value: Maintains <1 µA leakage at 23.1 V, preserving signal integrity while clamping fast transients below 37.5 V. |
| Automotive Lighting Driver Protection | Telecom DC Power Input Protection |
Use Scenario: Shielding LED driver ICs in headlamp modules from reverse battery connection and alternator ripple spikes. IC Role / Device Role / Timing Role: Primary overvoltage suppression device on input rail, upstream of DC/DC converter. Use Value: Withstands 200 A non-repetitive forward surge (IFSM), enabling robustness against severe polarity reversal events. | Use Scenario: Guarding 48 V telecom power inputs against lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: First-stage transient suppressor on primary DC input before secondary regulation. Use Value: Delivers 1500 W peak power dissipation with <1 ps response, meeting Class B immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ27AHE3/A | Lower PPPM (600 W), same VBR range and SMC-compatible SMB (DO-214AA) package | Not rated for 1500 W surges; limited to lower-energy transients (e.g., ESD-only) | Select only if system-level surge testing confirms ≤600 W requirement and board space allows smaller SMB footprint |
| TPSMC27AHM3_A/H | Identical electrical specs; halogen-free, RoHS-compliant, and AEC-Q101 qualified - differs only in material composition | No functional difference; used where halogen-free compliance is mandated (e.g., EU automotive Tier 1) | Drop-in replacement when halogen-free materials are required; same thermal and electrical behavior |
Compared with TPSMC27AHE3_A/H, SMBJ27AHE3/A offers reduced surge capacity in a smaller package, while TPSMC27AHM3_A/H provides identical protection with halogen-free construction - enabling compliance-driven substitution without design change.
Availability
TPSMC27AHE3_A/H is available at Aetrix Electronics and suitable for automotive power line protection, industrial sensor interface hardening, and telecom DC input surge suppression requiring stable component supply and AEC-Q101 qualification.
Supply support for TPSMC27AHE3_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 TPSMC series is engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where 1500 W surge handling and 185 °C operation are mandatory.
FAQ
What is the breakdown voltage tolerance of TPSMC27AHE3_A/H?
The TPSMC27AHE3_A/H has a specified breakdown voltage (VBR) range of 25.7 V (min) to 28.4 V (max) at 1 mA test current, with nominal 27.0 V. This ±5% tolerance ensures predictable clamping onset across production lots and temperature, critical for coordinating with downstream overvoltage thresholds in automotive ECUs.
Is TPSMC27AHE3_A/H suitable for bidirectional signal line protection?
No, TPSMC27AHE3_A/H is unidirectional only and must not be used on AC-coupled or bidirectional lines like USB or RS-485. Its cathode-anode polarity is fixed; for bidirectional protection, use a symmetric TVS such as SMAJ27CAHE3/A. The TPSMC27AHE3_A/H is intended for DC-biased rails like 24 V power or CAN-H with ground reference.
Does TPSMC27AHE3_A/H require derating at elevated ambient temperatures?
Yes, TPSMC27AHE3_A/H must be derated above 25 °C ambient per Figure 2 in the datasheet: peak pulse power decreases linearly to ~50% at 125 °C junction temperature. Designers must calculate actual TJ using thermal resistance and expected surge duty cycle to ensure safe operation - the TPSMC27AHE3_A/H's 185 °C rating supports high-temperature mounting but does not eliminate derating needs.
What is the meaning of the "HE3" suffix in TPSMC27AHE3_A/H?
The "HE3" suffix in TPSMC27AHE3_A/H denotes RoHS-compliant construction and AEC-Q101 qualification. It indicates matte tin-plated leads, JESD201 Class 2 whisker resistance, and full automotive stress testing - distinguishing it from non-qualified variants and confirming suitability for automotive production use per TPSMC27AHE3_A/H's official Vishay documentation.
How does the clamping voltage of TPSMC27AHE3_A/H compare to its breakdown voltage?
The TPSMC27AHE3_A/H clamps at 37.5 V (VC) when subjected to its rated 40 A peak pulse current (10/1000 µs), yielding a clamping ratio of ~1.39 relative to nominal VBR (27.0 V). This tight ratio ensures minimal overvoltage exposure to protected ICs - significantly better than older TVS families - and is validated per ANSI/IEEE C62.35 standards cited in the TPSMC27AHE3_A/H datasheet.
TPSMC27AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 40A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMCJ)
TPSMC27AHE3_A/H FAQ
1.How can I place an order for TPSMC27AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC27AHE3_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 TPSMC27AHE3_A/H reliable?
The price and inventory of TPSMC27AHE3_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 TPSMC27AHE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMC27AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC27AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC27AHE3_A/H?
TPSMC27AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC27AHE3_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 TPSMC27AHE3_A/H?
For technical support, including TPSMC27AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC27AHE3_A/H requirements.
6.How does Aetrix verify that TPSMC27AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMC27AHE3_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 TPSMC27AHE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMC27AHE3_A/H?
All TPSMC27AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC27AHE3_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 TPSMC27AHE3_A/H part is unused and in its original packaging.
Return procedure for TPSMC27AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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