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Vishay General Semiconductor - Diodes Division P4SMA27A-E3/61
- Part No.:
- P4SMA27A-E3/61
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
P4SMA27A-E3/61.pdf
- Description:
- TVS DIODE 23.1VWM 37.5VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,958
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Product details
Overview
P4SMA27A-E3/61 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 27 V breakdown voltage (VBR = 25.7–28.4 V at 1 mA), 23.1 V standoff voltage (VWM), 37.5 V maximum clamping voltage (VC) at 10.7 A peak pulse current, and 400 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P4SMA27A-E3/61 datasheet, P4SMA27A-E3/61 pinout, P4SMA27A-E3/61 application, or P4SMA27A-E3/61 equivalent, key selection criteria include unidirectional polarity, SMA package thermal resistance (RθJA = 120 °C/W), AEC-Q101 qualification status (not applicable to -E3/61 suffix), RoHS compliance, and clamping performance under repetitive surge conditions.
Technical Context
The P4SMA27A-E3/61 operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its breakdown threshold. Its glass-passivated junction ensures stable VBR tolerance (±5%) and low incremental surge resistance, enabling precise transient suppression without latch-up or degradation under repeated 10/1000 µs pulses at 0.01% duty cycle.
It is rated for 40 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine), operates across -65 °C to +150 °C junction temperature range, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak. The cathode band identifies polarity, and terminals are matte tin-plated for reliable solderability per J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 25.7 V / 28.4 V at 1 mA - defines precise avalanche initiation window for repeatable clamping behavior |
| VWM | 23.1 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 37.5 V at 10.7 A - clamped voltage during 400 W transient, limiting downstream device stress |
| PPPM | 400 W (10/1000 µs) - peak surge energy handling capacity on standard 5.0 mm × 5.0 mm copper pads |
| IPPM | 10.7 A - peak pulse current corresponding to VC, critical for PCB trace sizing and layout |
| RθJA | 120 °C/W - thermal resistance from junction to ambient, determines derating above 25 °C ambient |
| TJ max | +150 °C - maximum junction temperature, constrains sustained power dissipation (PD = 3.3 W) |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, low-profile plastic case with matte tin-plated leads; cathode identified by black band on body; compliant with UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side of protected line; carries full surge current during clamping |
| Cathode | Reverse-biased clamping terminal | Marked with band; connected to higher-potential side (e.g., VCC rail); initiates avalanche at VBR |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 3 surges (1 kV/2 Ω) on 24 V systems |
| Glass-passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and single-reflow assembly without baking preconditioning |
| RoHS-compliant, commercial-grade (-E3) | Meets EU Directive 2011/65/EU; suitable for consumer, industrial, and telecom equipment |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time capability) |
Applications
| Industrial Power Supply Protection | Automotive Sensor Interface Protection |
|---|---|
Use Scenario: Suppresses load-dump and inductive switching spikes on 24 V DC input rails of PLC modules and motor drives. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VIN and GND, clamping transients within 1 ns to prevent damage to upstream DC-DC controllers. Use Value: Limits clamped voltage to 37.5 V, keeping downstream 40 V-rated MOSFETs and LDOs within safe operating area. |
Use Scenario: Shields LIN bus transceivers and Hall-effect sensors from ESD and battery reversal events in engine control units. IC Role / Device Role / Timing Role: Mounted directly at connector entry point, acting as first-line defense against ±30 kV contact ESD (IEC 61000-4-2). Use Value: Delivers sub-1 ns response and <1 µA leakage at 23.1 V, preserving signal integrity on low-current sensor bias lines. |
| Telecom Line Card Surge Protection | Consumer Device USB Port Protection |
Use Scenario: Protects Ethernet PHY power pins and auxiliary 12 V bias rails in VoIP gateways exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Paired with series impedance to form low-pass filter; absorbs 400 W transients without thermal runaway. Use Value: Maintains RθJA = 120 °C/W on standard FR4, enabling operation up to +85 °C ambient without derating. |
Use Scenario: Guards 5 V VBUS line in smart speaker USB-C ports against hot-plug transients and cable discharge events. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to GND, placed upstream of USB power switch ICs. Use Value: Achieves 37.5 V clamping at 10.7 A while consuming <0.064 g PCB area - critical for space-constrained portable designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ27A (Bourns) | Same VBR range (25.7–28.4 V), identical SMA package, but rated for 400 W with 10/1000 µs waveform and RθJA = 110 °C/W | Higher thermal efficiency allows marginally better sustained surge handling in compact layouts | Select SMAJ27A when board-level thermal management is constrained and junction temperature rise must be minimized |
| 1.5SMC27A (ON Semiconductor) | Same electrical specs, but in larger SMC (DO-214AB) package (2.54 mm lead pitch vs. SMA's 2.29 mm), RθJA = 100 °C/W | Requires more PCB area but offers higher surge current margin (11.2 A vs. 10.7 A) and improved heat dissipation | Choose 1.5SMC27A for high-reliability industrial applications where layout space permits and long-term thermal cycling stability is prioritized |
Compared with SMAJ27A and 1.5SMC27A, the P4SMA27A-E3/61 provides optimal balance of compact SMA footprint, verified 400 W surge capability, and commercial-grade RoHS compliance - making it ideal for cost-sensitive, space-constrained designs where AEC-Q101 qualification is not required.
Availability
P4SMA27A-E3/61 is available at Aetrix Electronics and suitable for industrial power supplies, telecom line cards, automotive sensor interfaces, and consumer USB port protection requiring stable component supply and consistent RoHS-compliant sourcing.
Supply support for P4SMA27A-E3/61 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, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The P4SMA Series targets cost-effective, high-volume transient suppression in commercial and industrial systems - engineered for automated SMT placement, stable parametric performance, and compatibility with standard reflow profiles.
FAQ
What is the polarity configuration of the P4SMA27A-E3/61?
The P4SMA27A-E3/61 is a unidirectional TVS diode, with the cathode identified by a black band on the SMA package body. It conducts only in reverse bias above its breakdown voltage and blocks forward current up to 40 A surge rating. This polarity enables targeted clamping on positive-rail transients while maintaining high impedance on normal forward-biased operation - a key distinction from bidirectional variants like P4SMA27CA.
Does the P4SMA27A-E3/61 meet AEC-Q101 automotive qualification?
No, the P4SMA27A-E3/61 does not carry AEC-Q101 qualification. The -E3 suffix denotes RoHS-compliant, commercial-grade construction. AEC-Q101 qualified versions use the -HE3 or -HM3 suffix (e.g., P4SMA27AHE3_A). For automotive applications requiring qualification, engineers must specify the appropriate automotive ordering code - the P4SMA27A-E3/61 is intended for industrial, telecom, and consumer use cases.
What is the maximum clamping voltage of the P4SMA27A-E3/61 under surge conditions?
The P4SMA27A-E3/61 has a maximum clamping voltage (VC) of 37.5 V at 10.7 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions on 5.0 mm × 5.0 mm copper pads and represents the upper limit of voltage seen by protected circuitry during worst-case transient events - critical for ensuring downstream components remain within their absolute maximum ratings.
How does the P4SMA27A-E3/61 compare to the P4SMA27CA in terms of application suitability?
The P4SMA27A-E3/61 is unidirectional and suited for DC rail protection (e.g., 24 V supply lines), whereas the P4SMA27CA is bidirectional and used for AC or differential signal lines (e.g., RS-485, CAN). Their VBR, VWM, and VC values differ: P4SMA27CA has symmetric breakdown (25.7–28.4 V in both directions) and lower VWM (20.5 V), making it inappropriate as a drop-in replacement. Select P4SMA27A-E3/61 only for single-polarity clamping needs.
What is the thermal resistance and power derating behavior of the P4SMA27A-E3/61?
The P4SMA27A-E3/61 has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W. Its steady-state power dissipation (PD) is rated at 3.3 W at TA = 50 °C, and derates linearly above 25 °C ambient per Figure 2 in the datasheet. At 85 °C ambient, usable PD drops to ~2.1 W - requiring careful thermal design in enclosed or high-temperature environments to avoid exceeding TJ max = +150 °C.
P4SMA27A-E3/61 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- P4SMA, 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):
- 10.7A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
P4SMA27A-E3/61 FAQ
1.How can I place an order for P4SMA27A-E3/61 through Aetrix?
Please submit a Request for Quotation (RFQ) for P4SMA27A-E3/61 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 P4SMA27A-E3/61 reliable?
The price and inventory of P4SMA27A-E3/61 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P4SMA27A-E3/61 is usually 5 days.
3.What payment methods are accepted for P4SMA27A-E3/61?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P4SMA27A-E3/61 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P4SMA27A-E3/61?
P4SMA27A-E3/61 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P4SMA27A-E3/61 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 P4SMA27A-E3/61?
For technical support, including P4SMA27A-E3/61 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P4SMA27A-E3/61 requirements.
6.How does Aetrix verify that P4SMA27A-E3/61 is sourced from the original manufacturer or authorized distributors?
All P4SMA27A-E3/61 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 P4SMA27A-E3/61 meets industry standards.
7.What is the process for return or replacement of P4SMA27A-E3/61?
All P4SMA27A-E3/61 units undergo pre-shipment inspection (PSI). If there is an issue with P4SMA27A-E3/61, 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 P4SMA27A-E3/61 part is unused and in its original packaging.
Return procedure for P4SMA27A-E3/61:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P4SMA27A-E3/61 Tags
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