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Vishay General Semiconductor - Diodes Division 1.5SMC27AHE3_A/H
- Part No.:
- 1.5SMC27AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC27AHE3_A/H.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,270
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Product details
Overview
1.5SMC27AHE3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V at IT = 1.0 mA), 23.1 V stand-off voltage (VWM), and clamps to ≤37.5 V at 40.0 A peak pulse current (10/1000 µs), delivering 1500 W peak pulse power for surge immunity in automotive and industrial power rails.
For engineers reviewing the 1.5SMC27AHE3_A/H datasheet, 1.5SMC27AHE3_A/H pinout, 1.5SMC27AHE3_A/H application, or 1.5SMC27AHE3_A/H equivalent, this AEC-Q101 qualified TVS diode supports high-reliability designs requiring precise clamping, low leakage (<1.0 µA at VWM), MSL Level 1 moisture sensitivity, and RoHS-compliant matte tin terminations - critical for ESD and lightning transient suppression in automotive ECUs and industrial sensor interfaces.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VWM = 23.1 V, it avalanches at VBR = 25.7–28.4 V and limits transient energy by diverting surge current to ground. Its glass-passivated junction ensures stable breakdown and fast response (<1 ns), while low incremental surge resistance enables effective clamping under 10/1000 µs surges up to 40.0 A.
Thermally, it sustains 150 °C maximum junction temperature with RθJA = 75 °C/W (on recommended 8.0 mm × 8.0 mm copper pads) and handles 200 A non-repetitive forward surge (8.3 ms half-sine). The cathode band marking identifies polarity, and its DO-214AB outline conforms to JEDEC standards for automated SMT placement.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1.0 mA - defines precise avalanche initiation window for reliable overvoltage triggering |
| VWM | 23.1 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | ≤37.5 V at 40.0 A - clamping voltage during 1500 W 10/1000 µs surge, limiting stress on downstream ICs |
| ID @ VWM | ≤1.0 µA - ultra-low reverse leakage preserves signal integrity and power efficiency in standby |
| PPPM | 1500 W - peak pulse power handling capability per standard 10/1000 µs waveform, enabling lightning/ESD resilience |
| TJ max | +150 °C - extended thermal rating supports operation in under-hood automotive and industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Reverse surge return path | Connected to protected line (e.g., 24 V rail); conducts during positive transients or forward bias |
| Cathode | Reverse voltage sensing / Clamping reference | Marked with band; tied to ground or lower-potential node to enable avalanche clamping during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges (4 kV line-to-ground) without derating |
| Glass passivated junction | Ensures stable VBR tolerance, low leakage drift over temperature, and long-term reliability in harsh environments |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control, ADAS sensors, and body electronics |
| MSL Level 1 (260 °C) | Supports standard lead-free reflow profiles without pre-baking, reducing manufacturing complexity |
| Low clamping ratio (VC/VBR ≈ 1.35) | Minimizes voltage overshoot during transients, protecting 3.3 V/5 V logic and MOSFET gate drivers |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units (ECUs) from load dump and alternator transients. IC Role / Device Role / Timing Role: Shunt TVS diode clamping reverse voltage spikes to safe levels before they reach microcontrollers and CAN transceivers. Use Value: Limits clamped voltage to ≤37.5 V, well below 40 V absolute maximum ratings of common automotive MCUs and power management ICs. |
Use Scenario: Safeguarding analog inputs of industrial pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Fast-acting voltage clamp absorbing ESD (IEC 61000-4-2) and inductive switching noise on 4–20 mA or 0–10 V signal lines. Use Value: Sub-1 ns response and ≤1.0 µA leakage preserve signal accuracy and prevent false triggering in precision measurement circuits. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Securing -48 V DC input stages of telecom base station power supplies against lightning-induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp on bulk DC input, working in coordination with upstream MOVs and filters. Use Value: 1500 W rating and 37.5 V clamping enable compliance with GR-1089-CORE Level 3 surge requirements without cascaded protection stages. |
Use Scenario: Suppressing back-EMF spikes generated by brushed DC motors in home appliances (e.g., washing machine drive circuits). IC Role / Device Role / Timing Role: Unidirectional TVS placed across motor terminals to clamp inductive kickback during PWM switching. Use Value: 200 A IFSM rating withstands repetitive commutation surges; 23.1 V VWM avoids false triggering during normal 24 V motor operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ27A | Same VBR range (25.7–28.4 V), but lower PPPM = 400 W and smaller SMA package (DO-214AC); RθJA = 110 °C/W | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for IEC 61000-4-5 surge | Select when board space is constrained and surge energy is <50 mJ; verify thermal margin with reduced pad area. |
| 1.5KE27A | Through-hole TO-204AE (DO-201AE) package; identical VBR, VWM, VC, and PPPM; higher IFSM = 250 A | Requires through-hole assembly; better natural convection cooling but incompatible with full SMT lines | Choose for legacy designs or where mechanical robustness and higher surge endurance outweigh SMT compatibility. |
Compared with 1.5SMC27AHE3_A/H, SMAJ27A trades surge capacity for footprint reduction, while 1.5KE27A retains full electrical performance but sacrifices surface-mount flexibility - making 1.5SMC27AHE3_A/H the optimal balance of AEC-Q101 reliability, 1500 W clamping, and automated SMT manufacturability.
Availability
1.5SMC27AHE3_A/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power supply designs requiring stable component supply, AEC-Q101 validation, and consistent 1500 W transient suppression performance.
Supply support for 1.5SMC27AHE3_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, power handling, and automotive qualification.
The 1.5SMC Series was engineered specifically for high-energy transient suppression in demanding environments - delivering standardized 1500 W surge capability, AEC-Q101 compliance, and SMC packaging optimized for automated manufacturing and thermal performance.
FAQ
What is the breakdown voltage tolerance of the 1.5SMC27AHE3_A/H?
The 1.5SMC27AHE3_A/H has a specified breakdown voltage (VBR) range of 25.7 V to 28.4 V at test current IT = 1.0 mA, representing a ±5% tolerance around the nominal 27 V rating. This tight VBR distribution ensures predictable clamping onset across production lots and supports reliable design margining in automotive and industrial systems.
Is the 1.5SMC27AHE3_A/H suitable for bidirectional transient protection?
No, the 1.5SMC27AHE3_A/H is a unidirectional TVS diode, indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay offers the 1.5SMC27CA variant. Using the 1.5SMC27AHE3_A/H in bidirectional applications would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit.
Does the 1.5SMC27AHE3_A/H meet automotive qualification standards?
Yes, the 1.5SMC27AHE3_A/H is AEC-Q101 qualified, as confirmed by its "HE3" suffix and documentation in Vishay's 88303 datasheet. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and ESD, validating its use in automotive powertrain, chassis, and body electronics applications.
What is the maximum clamping voltage of the 1.5SMC27AHE3_A/H under surge conditions?
The 1.5SMC27AHE3_A/H clamps to a maximum of 37.5 V at its rated peak pulse current of 40.0 A (10/1000 µs waveform), as specified in the Electrical Characteristics table. This VC value is critical for ensuring downstream components - such as 3.3 V or 5 V logic ICs and MOSFET gate drivers - remain within their absolute maximum voltage ratings during transient events.
How does the 1.5SMC27AHE3_A/H differ from commercial-grade 1.5SMC27A variants?
The 1.5SMC27AHE3_A/H differs from standard 1.5SMC27A parts by incorporating AEC-Q101 qualification and RoHS compliance ("HE3" suffix), whereas base 1.5SMC27A variants (e.g., 1.5SMC27A-E3) are commercial-grade only. The HE3 version undergoes additional automotive-specific reliability testing and uses process controls to ensure lot-to-lot consistency required for automotive production.
1.5SMC27AHE3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
1.5SMC27AHE3_A/H FAQ
1.How can I place an order for 1.5SMC27AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC27AHE3_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 1.5SMC27AHE3_A/H reliable?
The price and inventory of 1.5SMC27AHE3_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 1.5SMC27AHE3_A/H is usually 5 days.
3.What payment methods are accepted for 1.5SMC27AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC27AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC27AHE3_A/H?
1.5SMC27AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC27AHE3_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 1.5SMC27AHE3_A/H?
For technical support, including 1.5SMC27AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC27AHE3_A/H requirements.
6.How does Aetrix verify that 1.5SMC27AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All 1.5SMC27AHE3_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 1.5SMC27AHE3_A/H meets industry standards.
7.What is the process for return or replacement of 1.5SMC27AHE3_A/H?
All 1.5SMC27AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC27AHE3_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 1.5SMC27AHE3_A/H part is unused and in its original packaging.
Return procedure for 1.5SMC27AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC27AHE3_A/H Tags
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