Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Circuit Protection > Transient Voltage Suppressors (TVS) > TVS Diodes

Vishay General Semiconductor - Diodes Division SA48CA-E3/54

Name: SA48CA-E3/54
Brand: Vishay General Semiconductor - Diodes Division
SKU: SA48CA-E3/54
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SA48CA-E3/54

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: TVS Diodes

Package:: DO-204AC, DO-15, Axial

Datasheet:: SA48CA-E3/54.pdf

Description:: TVS DIODE 48VWM 77.4VC DO204AC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,593

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SA48CA-E3/54 from Vishay General Semiconductor is a bidirectional Transient Voltage Suppressor (TVS) diode in DO-15 package, designed for clamping voltage transients on signal or power lines. It features 48 V standoff voltage (V_WM), 53.3–58.9 V breakdown range (V_BR at 1 mA), 77.4 V max clamping voltage at 6.5 A (10/1000 μs), 500 W peak pulse power, and AEC-Q101 qualification for automotive electronics protection.

For engineers reviewing the SA48CA-E3/54 datasheet, SA48CA-E3/54 pinout, SA48CA-E3/54 application, or SA48CA-E3/54 equivalent, key selection criteria include bidirectional clamping capability, DO-15 mechanical compatibility, 175 °C junction temperature rating, low incremental surge resistance, and compliance with IEC 61000-4-2/4-4/4-5 for ESD and surge immunity in harsh environments.

Technical Context

This device operates as a voltage-clamping protector in bidirectional configurations - no polarity marking required - with symmetrical breakdown and clamping behavior in both directions. Its glass-passivated junction enables fast response (<1 ns), low leakage (<1.0 μA at V_WM), and stable performance across -55 °C to +175 °C operating range.

The SA48CA-E3/54 delivers 500 W peak pulse power under standardized 10/1000 μs waveform (duty cycle ≤ 0.01 %), with clamping voltage tightly controlled at 77.4 V @ 6.5 A. Its thermal design supports 3.0 W steady-state dissipation on infinite heatsink at T_L = 75 °C, and it meets JESD 201 Class 1A whisker resistance per RoHS-compliant matte tin plating.

Key Specifications

Parameter	Value and Actual Design Meaning
V_WM	48 V - maximum continuous reverse working voltage before clamping begins
V_BR (min/max)	53.3 V / 58.9 V at 1 mA - ensures reliable turn-on within defined tolerance band for predictable protection threshold
V_C @ I_PPM	77.4 V at 6.5 A (10/1000 μs) - limits transient voltage seen by downstream circuitry during surge events
P_PPM	500 W - sustains high-energy transients without failure under standard lightning/surge test conditions
T_J max.	+175 °C - enables operation in under-hood automotive or industrial high-temperature environments
Leakage I_D	<1.0 μA at 48 V - minimizes standby power loss and avoids false triggering in low-power sensor interfaces
AEC-Q101	Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress

Pinout & Package

DO-15 (DO-204AC) molded epoxy package with axial leads; matte tin-plated terminals solderable per J-STD-002/JESD 22-B102; no polarity marking (bidirectional).

Pin/Terminal	Circuit Role	Design Meaning
Anode/Cathode (symmetrical)	Bidirectional clamping node	No cathode band; either lead serves as input/output for transient suppression in AC or floating signal paths
Lead 1	Terminal connection	Standard axial lead - forms mechanical and electrical interface to PCB trace or wire harness
Lead 2	Terminal connection	Second axial lead - completes two-terminal TVS configuration; no internal distinction between pins

Key Features

Feature	Design Value
Glass-passivated junction	Enables sub-nanosecond response and stable V_BR over lifetime and temperature
500 W peak pulse power (10/1000 μs)	Withstands IEC 61000-4-5 Level 3 (1 kV line-to-line, 2 kV line-to-ground) surges without degradation
AEC-Q101 qualification	Validated for automotive powertrain, body control, and ADAS modules requiring zero-defect reliability
UL 94 V-0 molding compound	Prevents flame propagation in enclosed enclosures during fault conditions
JESD 201 Class 1A whisker resistance	Eliminates tin whisker growth risk in long-life industrial deployments (>15 years)

Applications

Automotive Power Line Protection	Industrial Sensor Interface Protection
Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across power rail and ground to limit voltage excursions to safe levels. Use Value: Clamps to ≤77.4 V during 6.5 A surge, preventing damage to 48 V-rated CAN transceivers and microcontrollers.	Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation. IC Role / Device Role / Timing Role: Two-terminal shunt protector on differential or single-ended signal lines upstream of ADC inputs. Use Value: Sub-μA leakage preserves signal integrity in 24-bit precision measurement systems; fast response prevents latch-up in op-amps.
Telecom DSL Line Protection	Consumer Appliance Motor Drive Protection
Use Scenario: Guarding ADSL/VDSL line cards against lightning-induced surges on twisted-pair copper lines. IC Role / Device Role / Timing Role: Primary-level TVS on line-side transformer secondary, before hybrid circuitry. Use Value: Symmetrical clamping ensures equal protection for both line polarities; DO-15 footprint allows compact layout near connector.	Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers. IC Role / Device Role / Timing Role: Across motor terminals to clamp flyback voltage during PWM switching transitions. Use Value: 175 °C rating survives sustained thermal stress near motor windings; 500 W rating handles repetitive commutation spikes.

Automotive Power Line Protection

Industrial Sensor Interface Protection

Use Scenario: Protecting 12 V battery-fed ECUs against load dump (ISO 7637-2 Pulse 5a) and alternator transients.

IC Role / Device Role / Timing Role: Bidirectional clamping element placed across power rail and ground to limit voltage excursions to safe levels.

Use Value: Clamps to ≤77.4 V during 6.5 A surge, preventing damage to 48 V-rated CAN transceivers and microcontrollers.

Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events in factory automation.

IC Role / Device Role / Timing Role: Two-terminal shunt protector on differential or single-ended signal lines upstream of ADC inputs.

Use Value: Sub-μA leakage preserves signal integrity in 24-bit precision measurement systems; fast response prevents latch-up in op-amps.

Telecom DSL Line Protection

Consumer Appliance Motor Drive Protection

Use Scenario: Guarding ADSL/VDSL line cards against lightning-induced surges on twisted-pair copper lines.

IC Role / Device Role / Timing Role: Primary-level TVS on line-side transformer secondary, before hybrid circuitry.

Use Value: Symmetrical clamping ensures equal protection for both line polarities; DO-15 footprint allows compact layout near connector.

Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines and HVAC blowers.

IC Role / Device Role / Timing Role: Across motor terminals to clamp flyback voltage during PWM switching transitions.

Use Value: 175 °C rating survives sustained thermal stress near motor windings; 500 W rating handles repetitive commutation spikes.

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient voltage suppression applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SMAJ48A-E3/5A	Unidirectional; same V_WM/V_C, but requires polarity-aware placement and lacks AEC-Q101 qualification	Suitable only where circuit topology enforces fixed polarity and automotive qualification is not required	Select SMAJ48A-E3/5A only if unidirectional behavior aligns with system grounding scheme and cost is prioritized over qualification
1.5KE48CA	Same DO-15 package and bidirectional function, but higher P_PPM (1500 W); larger junction capacitance (~200 pF vs. ~50 pF)	Better for high-energy surges but unsuitable for >1 MHz signal lines due to excessive capacitive loading	Choose 1.5KE48CA when protecting AC mains inputs or low-frequency power rails where bandwidth is not critical

Compared with SMAJ48A-E3/5A and 1.5KE48CA, the SA48CA-E3/54 uniquely balances AEC-Q101 compliance, low capacitance, and precise 48 V clamping in a cost-effective DO-15 form factor - making it optimal for automotive signal integrity and industrial sensor protection where reliability and bandwidth coexist.

Availability

SA48CA-E3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor interfaces, telecom line protection, and consumer appliance motor drive circuits requiring stable component supply and long-term lifecycle support.

Supply support for SA48CA-E3/54 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 SAxxCA series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for robust, bidirectional transient suppression in automotive, industrial, and communications infrastructure where consistent clamping, thermal resilience, and qualification compliance are mandatory.

FAQ

What is the clamping voltage of SA48CA-E3/54 and how is it measured?

The SA48CA-E3/54 has a maximum clamping voltage (V_C) of 77.4 V at 6.5 A peak pulse current using the standardized 10/1000 μs waveform. This value is measured under controlled lab conditions per IEC 61000-4-5, ensuring repeatable surge immunity validation. The SA48CA-E3/54 maintains this clamping performance across its full operating temperature range (-55 °C to +175 °C), making it suitable for under-hood automotive use.

Is SA48CA-E3/54 suitable for automotive applications?

Yes, SA48CA-E3/54 is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its 175 °C maximum junction temperature, glass-passivated junction, and DO-15 mechanical robustness meet stringent automotive reliability requirements. The SA48CA-E3/54 is commonly deployed in CAN/LIN bus protection and power rail conditioning where qualification evidence is mandatory.

Does SA48CA-E3/54 have polarity markings?

No, SA48CA-E3/54 is a bidirectional TVS diode and carries no polarity marking - both leads are functionally identical. This eliminates orientation errors during automated assembly and simplifies layout for AC-coupled or floating signal paths. The SA48CA-E3/54 achieves symmetrical breakdown and clamping in both directions, confirmed by V_BR min/max values matching across terminals in the datasheet.

What is the leakage current specification for SA48CA-E3/54 at rated standoff voltage?

At its 48 V standoff voltage (V_WM), the SA48CA-E3/54 exhibits a maximum reverse leakage current (I_D) of 1.0 μA at 25 °C. This ultra-low leakage preserves signal fidelity in high-impedance sensor nodes and reduces standby power in battery-operated systems. The SA48CA-E3/54 maintains leakage below 5 μA even at 125 °C, supporting wide-temperature industrial deployments.

Can SA48CA-E3/54 replace SA48A-E3/54 in existing designs?

No - SA48CA-E3/54 is bidirectional while SA48A-E3/54 is unidirectional; they are not functionally interchangeable without circuit review. The SA48CA-E3/54 clamps in both directions with no cathode band, whereas SA48A-E3/54 requires correct polarity alignment and provides forward conduction path. Replacing one with the other may cause short-circuit or ineffective protection depending on system grounding and signal topology.

SA48CA-E3/54 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Package/Case:: DO-204AC, DO-15, Axial

Series:: TransZorb®

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Zener

Unidirectional Channels:: -

Bidirectional Channels:: 1

Voltage - Reverse Standoff (Typ):: 48V

Voltage - Breakdown (Min):: 53.3V

Voltage - Clamping (Max) @ Ipp:: 77.4V

Current - Peak Pulse (10/1000µs):: 6.5A

Power - Peak Pulse:: 500W

Power Line Protection:: No

Applications:: General Purpose

Capacitance @ Frequency:: -

Operating Temperature:: -55°C ~ 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AC (DO-15)

SA48CA-E3/54 FAQ

1.How can I place an order for SA48CA-E3/54 through Aetrix?

Please submit a Request for Quotation (RFQ) for SA48CA-E3/54 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 SA48CA-E3/54 reliable?

The price and inventory of SA48CA-E3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA48CA-E3/54 is usually 5 days.

3.What payment methods are accepted for SA48CA-E3/54?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA48CA-E3/54 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SA48CA-E3/54?

SA48CA-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SA48CA-E3/54 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 SA48CA-E3/54?

For technical support, including SA48CA-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA48CA-E3/54 requirements.

6.How does Aetrix verify that SA48CA-E3/54 is sourced from the original manufacturer or authorized distributors?

All SA48CA-E3/54 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 SA48CA-E3/54 meets industry standards.

7.What is the process for return or replacement of SA48CA-E3/54?

All SA48CA-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA48CA-E3/54, 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 SA48CA-E3/54 part is unused and in its original packaging.

Return procedure for SA48CA-E3/54:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-11 Comparator Circuit: Voltage Thresholds, Op-Amp Differences, LM393 and Practical Design

Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.

2026-09-10 Schmitt Trigger Explained: Hysteresis, Circuits, Inverters and Applications

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…

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

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, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

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.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …