My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMPC26A-M3/87A
- Part No.:
- SMPC26A-M3/87A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- TO-277, 3-PowerDFN
- Datasheet:
-
SMPC26A-M3/87A.pdf
- Description:
- TVS DIODE 26VWM 42.1VC TO277A
- Quantity:
- Payment:
- Shipping:
Inventory:9,642
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMPC26A-M3/87A from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in the eSMP® SMPC (TO-277A) package, designed for high-energy transient protection on power and signal lines. It features a 26.0 V stand-off voltage (VWM), 28.9–31.9 V breakdown voltage (VBR), 42.1 V maximum clamping voltage (VC) at 35.6 A peak pulse current, and 1500 W peak pulse power (10/1000 μs). It is widely used to protect MOSFETs and sensor signal lines in automotive and industrial control systems.
For engineers reviewing the SMPC26A-M3/87A datasheet, SMPC26A-M3/87A pinout, SMPC26A-M3/87A application, or SMPC26A-M3/87A equivalent, key selection criteria include clamping performance under 10/1000 μs surges, thermal resistance (RθJA ≤ 100 °C/W), unidirectional polarity configuration, AEC-Q101 qualification status, and compatibility with automated SMT placement on FR4 PCBs.
Technical Context
The SMPC26A-M3/87A operates as a silicon avalanche diode optimized for fast response (<1 ns) to transient overvoltages induced by inductive load switching or ESD events. Its unidirectional architecture provides reverse-biased protection only, with cathode denoted by a band and anode terminals electrically tied internally in the SMPCxxA variant.
It is rated for 1500 W peak pulse power per 10/1000 μs waveform, with clamping voltage tightly controlled at 42.1 V under 35.6 A surge current. Thermal performance is specified with RθJA ≤ 100 °C/W (JEDEC 51-2A, FR4, 2 oz copper), enabling reliable operation up to TJ = 150 °C in compact board space.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 26.0 V - Maximum continuous reverse operating voltage before conduction begins |
| VBR (min/max) | 28.9 V / 31.9 V - Breakdown occurs within this range at 1.0 mA test current, defining turn-on threshold |
| VC @ IPPM | 42.1 V - Clamped voltage across device during 35.6 A 10/1000 μs surge, limiting stress on downstream ICs |
| PPPM | 1500 W - Peak transient energy absorption capability, critical for IEC 61000-4-5 compliance |
| RθJA | ≤ 100 °C/W - Junction-to-ambient thermal resistance on standard FR4 PCB, determines power derating above 25 °C |
| Polarity | Unidirectional - Protects against reverse-polarity transients only; requires correct cathode orientation |
| Package | SMPC (TO-277A) - Low-profile (1.1 mm height), 3-terminal SMD package with matte tin leads, MSL Level 1 |
Pinout & Package
SMPC26A-M3/87A uses the SMPC (TO-277A) package: a 3-terminal surface-mount case with two anode pads (pins 1 and 2) and one common cathode pad (pin 3), marked by a band. The device has no internal isolation between anodes; both anodes are shorted internally and function as a single terminal. Mounting pad layout follows JEDEC TO-277A standard with 0.268" × 0.186" footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (Pin 1) | Primary anode connection | Electrically tied to Anode 2; forms one side of the avalanche junction with Cathode |
| Anode 2 (Pin 2) | Secondary anode connection | Internally shorted to Pin 1; enables dual-pad mechanical stability and current sharing in high-surge layouts |
| Cathode (Pin 3, banded end) | Clamping output node | Connected to protected circuit ground or return path; voltage clamps to ≤42.1 V when transient exceeds VBR |
Key Features
| Feature | Design Value |
|---|---|
| Very low profile (1.1 mm height) | Enables use in ultra-thin consumer and automotive ECUs where Z-height is constrained |
| MSL Level 1, 260 °C reflow compatible | Supports lead-free assembly without preconditioning or special handling |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
| Matte tin-plated leads, J-STD-002 compliant | Ensures robust solder wetting and reliability in high-volume automated placement |
| Halogen-free, RoHS-compliant, industrial grade | Fulfills environmental compliance requirements for global industrial and computing applications |
Applications
| Automotive Power Line Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power rails from load dump and alternator transients in body control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND to clamp surges up to ±1500 W without affecting normal 26 V operating margin. Use Value: Limits peak rail voltage to ≤42.1 V during ISO 16750-2 load dump events, preventing MCU brownout or latch-up. | Use Scenario: Safeguarding analog outputs of pressure sensors in PLC I/O modules exposed to relay coil flyback noise. IC Role / Device Role / Timing Role: TVS connected across sensor output and ground to suppress <100 ns spikes induced by nearby 24 V DC solenoid switching. Use Value: Sub-ns response and 42.1 V clamping prevent ADC saturation and maintain ±0.1% measurement accuracy under EMI stress. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Shielding PoE-powered switch port DC inputs from lightning-induced surges on outdoor Ethernet cabling. IC Role / Device Role / Timing Role: Primary unidirectional TVS on 48 V input rail, coordinated with upstream GDT and downstream π-filter. Use Value: 1500 W PPPM rating handles IEC 61000-4-5 Combination Wave (10/700 μs) surges while maintaining 26 V system hold-up. | Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home vacuum cleaners during PWM commutation. IC Role / Device Role / Timing Role: TVS mounted directly across motor terminals to absorb inductive kickback before it couples into mainboard logic. Use Value: 35.6 A IPPM and 42.1 V VC ensure MOSFET gate drivers remain below absolute maximum ratings during 20 kHz switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ26A-E3/5A (Vishay) | Same VWM (26 V) and VC (42.1 V), but SMA package (higher RθJA = 140 °C/W), lower PPPM (400 W) | Lower surge capacity limits use to sub-500 W threat environments; less suitable for automotive load dump | Select SMAJ26A-E3/5A only for cost-sensitive, low-energy consumer applications where board space allows larger footprint |
| 1.5KE27A (ON Semiconductor) | Through-hole DO-201 package, same VWM/VBR range, 1500 W PPPM, but 5.5 mm height and no MSL Level 1 rating | Not compatible with automated SMT lines; requires wave solder or hand assembly; unsuitable for thin-profile designs | Choose 1.5KE27A only for legacy through-hole designs or prototyping where reflow compatibility is not required |
Compared with SMAJ26A-E3/5A and 1.5KE27A, SMPC26A-M3/87A delivers identical clamping performance in a low-profile, MSL Level 1 SMT package optimized for high-volume automotive and industrial production-enabling higher surge resilience than SMAJ26A and full SMT integration unlike 1.5KE27A.
Availability
SMPC26A-M3/87A is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and telecom power supply protection requiring stable component supply, halogen-free compliance, and AEC-Q101-qualified alternatives.
Supply support for SMPC26A-M3/87A 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMPC series belongs to Vishay's Transient Voltage Suppressor line, engineered specifically for high-power, low-profile SMT transient protection in automotive, industrial, and communications infrastructure where space, surge robustness, and automated assembly are critical.
FAQ
What is the clamping voltage of SMPC26A-M3/87A under maximum surge conditions?
The SMPC26A-M3/87A exhibits a maximum clamping voltage (VC) of 42.1 V when subjected to its rated 35.6 A peak pulse current (IPPM) using the standard 10/1000 μs waveform. This value is measured across the cathode and combined anode terminals and defines the upper voltage limit imposed on protected circuits during transient events. The clamping performance is guaranteed per Vishay Document Number 89116 and remains stable across its -55 °C to +150 °C operating junction temperature range.
Is SMPC26A-M3/87A qualified for automotive applications?
No, SMPC26A-M3/87A is not AEC-Q101 qualified. It carries the "M3" industrial-grade suffix, indicating halogen-free, RoHS-compliant construction but lacking automotive qualification. For AEC-Q101 compliance, the equivalent part is SMPC26AN-M3/87A (ordering code with "AN" suffix), which shares identical electrical specs but undergoes additional stress testing per AEC-Q101. Engineers selecting SMPC26A-M3/87A must verify suitability for non-automotive use cases such as industrial controls or telecom equipment.
How is the pin configuration arranged on SMPC26A-M3/87A?
The SMPC26A-M3/87A uses a 3-terminal SMPC (TO-277A) package with pins labeled Anode 1, Anode 2, and Cathode. Pins 1 and 2 are internally shorted anodes; Pin 3 is the cathode, identified by a band on the package body. This configuration allows dual-anode mechanical anchoring while maintaining a single avalanche junction. The device must be oriented so the banded end connects to the system ground or return path to enable proper unidirectional clamping behavior in the SMPC26A-M3/87A.
What does the "/87A" suffix indicate in SMPC26A-M3/87A?
Within the SMPC26A-M3/87A ordering code, the "/87A" suffix specifies the packaging format: 13-inch diameter plastic tape and reel, with a base quantity of 6500 units per reel. This differs from "/86A", which denotes a 7-inch reel containing 1500 units. Both /86A and /87A variants share identical electrical, thermal, and mechanical characteristics-the suffix solely governs logistics and handling. The "M3" prefix confirms halogen-free, RoHS-compliant, industrial-grade construction per Vishay's material categorization standards.
Can SMPC26A-M3/87A be used in bidirectional protection configurations?
No, SMPC26A-M3/87A is strictly unidirectional and cannot provide bidirectional transient suppression. Its internal structure supports conduction only when the cathode is more positive than the combined anodes-making it suitable for protecting positive-rail-to-ground paths. For bidirectional protection (e.g., data lines or AC-coupled signals), a dedicated bidirectional TVS such as SMPC26CA-M3/87A-or a back-to-back pair of unidirectional devices-is required. Using SMPC26A-M3/87A in reverse bias beyond its 26 V stand-off voltage risks permanent degradation due to uncontrolled avalanche in the non-rated direction.
SMPC26A-M3/87A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- TO-277, 3-PowerDFN
- Series:
- TransZorb®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 26V
- Voltage - Breakdown (Min):
- 28.9V
- Voltage - Clamping (Max) @ Ipp:
- 42.1V
- Current - Peak Pulse (10/1000µs):
- 35.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-277A (SMPC)
SMPC26A-M3/87A FAQ
1.How can I place an order for SMPC26A-M3/87A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMPC26A-M3/87A 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 SMPC26A-M3/87A reliable?
The price and inventory of SMPC26A-M3/87A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMPC26A-M3/87A is usually 5 days.
3.What payment methods are accepted for SMPC26A-M3/87A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMPC26A-M3/87A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMPC26A-M3/87A?
SMPC26A-M3/87A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMPC26A-M3/87A 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 SMPC26A-M3/87A?
For technical support, including SMPC26A-M3/87A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMPC26A-M3/87A requirements.
6.How does Aetrix verify that SMPC26A-M3/87A is sourced from the original manufacturer or authorized distributors?
All SMPC26A-M3/87A 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 SMPC26A-M3/87A meets industry standards.
7.What is the process for return or replacement of SMPC26A-M3/87A?
All SMPC26A-M3/87A units undergo pre-shipment inspection (PSI). If there is an issue with SMPC26A-M3/87A, 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 SMPC26A-M3/87A part is unused and in its original packaging.
Return procedure for SMPC26A-M3/87A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMPC26A-M3/87A 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 …
