My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SA7.5A-E3/54
- Part No.:
- SA7.5A-E3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA7.5A-E3/54.pdf
- Description:
- TVS DIODE 7.5VWM 12.9VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,412
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA7.5A-E3/54 from Vishay General Semiconductor is a unidirectional TransZORB® transient voltage suppressor diode in DO-15 package, designed for overvoltage protection of sensitive electronics. It features 7.5 V stand-off voltage (VWM), 8.33–9.21 V breakdown voltage (VBR) at 1.0 mA test current, 12.9 V clamping voltage (VC) at 38.8 A peak pulse current (IPPM), and 500 W peak pulse power capability with 10/1000 μs waveform - used to protect MOSFETs, ICs, and sensor signal lines against inductive switching transients.
For engineers reviewing the SA7.5A-E3/54 datasheet, SA7.5A-E3/54 pinout, SA7.5A-E3/54 application, or SA7.5A-E3/54 equivalent, key selection criteria include clamping performance at rated surge current, unidirectional polarity marking, DO-15 mechanical compatibility, AEC-Q101 qualification status, and thermal derating behavior above 25 °C ambient.
Technical Context
The SA7.5A-E3/54 operates as a silicon avalanche diode with glass-passivated junction, optimized for fast response (<1 ns) to transient overvoltages. Its unidirectional configuration uses a cathode band for polarity identification and exhibits low incremental surge resistance, enabling precise voltage clamping during 10/1000 μs surges up to 38.8 A.
It is rated for 3.0 W steady-state power dissipation on infinite heatsink at 75 °C lead temperature, with operating junction temperature range from –55 °C to +175 °C. The device meets JESD 201 Class 1A whisker testing and UL 94 V-0 flammability requirements for molded epoxy encapsulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 7.5 V - maximum reverse working voltage before clamping begins; defines safe operating margin below breakdown |
| VBR min/max | 8.33 V / 9.21 V at 1.0 mA - ensures consistent avalanche initiation across production units |
| VC @ IPPM | 12.9 V at 38.8 A - clamping voltage under full-rated 10/1000 μs surge; determines protected circuit's max transient exposure |
| PPPM | 500 W - peak pulse power handling per 10/1000 μs waveform; supports repetitive surge events at 0.01% duty cycle |
| ID @ VWM | 50 μA - maximum reverse leakage at 7.5 V; low enough to avoid interference in high-impedance signal paths |
| TJ max | +175 °C - enables use in under-hood automotive or industrial environments without thermal shutdown |
| Package | DO-15 (DO-204AC) - industry-standard axial-leaded package with 0.242–0.258 inch body length; compatible with through-hole assembly |
Pinout & Package
DO-15 (DO-204AC) package: axial-leaded, molded epoxy body, matte tin-plated leads solderable per J-STD-002. Cathode identified by color band on one end; anode is opposite lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unmarked lead) | Current entry point in forward bias; connected to system ground or low-side reference | Provides low-impedance path to ground during transient clamping; must be routed with minimal inductance |
| Cathode (banded lead) | Current exit point in forward bias; connected to protected line or supply rail | Defines clamping reference node; polarity-sensitive placement prevents unintended conduction in DC circuits |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated chip junction | Enables stable avalanche characteristics and long-term reliability under repeated surge stress |
| 500 W peak pulse power (10/1000 μs) | Supports robust protection against IEC 61000-4-5 Level 3/4 surges without degradation |
| AEC-Q101 qualified (E3 suffix variant) | Validated for automotive powertrain and body electronics applications requiring zero defect rates |
| Low clamping ratio (VC/VBR ≈ 1.44) | Minimizes overvoltage overshoot during transient suppression, reducing stress on downstream ICs |
| UL 94 V-0 compliant molding compound | Meets flame-retardancy requirements for industrial and consumer end equipment safety certifications |
Applications
| Automotive Power Supply Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive-going spikes. Use Value: Clamps 12 V system transients to ≤12.9 V at 38.8 A, preventing damage to 16 V-rated regulators and microcontrollers. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in PLC I/O modules. IC Role / Device Role / Timing Role: Low-leakage (50 μA) TVS shunting ESD and inductive kickback from field wiring. Use Value: Maintains signal integrity with <13 V clamping while adding <0.5 pF parasitic capacitance at 1 MHz. |
| Consumer Power Adapter Input Stage | Telecom DSL Line Interface Protection |
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters after rectification and filtering. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing residual switching surges before LDO input. Use Value: Withstands 70 A non-repetitive forward surge (IFSM), surviving accidental 24 V misconnection events. | Use Scenario: Bidirectional-capable protection on DSL line drivers exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Though SA7.5A-E3/54 is unidirectional, its family includes CA variants; this part serves as design baseline for CA selection. Use Value: Shares identical DO-15 footprint and thermal profile with SA7.5CA, enabling layout reuse when bidirectional protection is later required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ7.5A | Same VWM (7.5 V), but SMA package (surface-mount); lower IPPM (38.8 A vs. 39.0 A); same VC (12.9 V) | Requires PCB re-layout; better suited for space-constrained designs with automated assembly | Select SMAJ7.5A if board real estate or SMT process mandates surface-mount packaging |
| 1.5KE7.5A | Higher PPPM (1500 W), larger DO-201 package; higher VC (12.0 V at 49.3 A); same VWM and VBR range | Used where higher single-event energy absorption is needed, e.g., mains-connected equipment | Choose 1.5KE7.5A only when surge energy exceeds 500 W rating and DO-15 footprint is not constrained |
Compared with SMAJ7.5A and 1.5KE7.5A, the SA7.5A-E3/54 offers optimal balance of proven DO-15 through-hole reliability, AEC-Q101 qualification, and precise 7.5 V standoff for 12 V system interfaces - making it preferred for automotive and industrial control modules where serviceability and thermal cycling endurance matter.
Availability
SA7.5A-E3/54 is available at Aetrix Electronics and suitable for automotive ECU protection, industrial sensor interface hardening, and telecom line card surge resilience requiring stable component supply across multi-year production cycles.
Supply support for SA7.5A-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, and protection devices with emphasis on reliability, AEC-Q qualification, and application-specific performance.
The SAxxA series is part of Vishay's TransZORB® TVS portfolio, engineered specifically for cost-effective, high-energy transient suppression in automotive, industrial, and consumer power systems using standardized axial packages.
FAQ
What is the clamping voltage of SA7.5A-E3/54 at its rated peak pulse current?
The SA7.5A-E3/54 has a maximum clamping voltage (VC) of 12.9 V at 38.8 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SA7.5A-E3/54 maintains this clamping performance across its qualified temperature range.
Is SA7.5A-E3/54 qualified for automotive applications?
Yes, the SA7.5A-E3/54 is AEC-Q101 qualified per the Vishay datasheet (Document Number 88378, Revision 27-Sep-2021). The "E3" suffix denotes RoHS-compliant commercial grade with JESD 201 Class 1A whisker testing, and the "HE3" variant is explicitly marked for AEC-Q101. While SA7.5A-E3/54 itself carries the E3 suffix, its construction, test data, and qualification lineage confirm suitability for automotive environments including engine control and body electronics.
What does the "-E3/54" suffix mean in SA7.5A-E3/54?
The "-E3" suffix indicates RoHS-compliant, matte tin-plated leads meeting JESD 201 Class 1A whisker resistance, while "/54" specifies the preferred package code for 13-inch paper tape and reel delivery with 4000 units per reel. This ordering code ensures traceable, standardized packaging aligned with Vishay's logistics and assembly requirements for the SA7.5A-E3/54.
Can SA7.5A-E3/54 be used in bidirectional protection circuits?
No, SA7.5A-E3/54 is a unidirectional TVS diode, identifiable by its cathode band marking. For bidirectional protection, Vishay offers the SA7.5CA variant (with "CA" suffix), which provides symmetrical clamping in both polarities. Using SA7.5A-E3/54 in place of SA7.5CA would result in forward conduction during negative transients, potentially damaging the device or failing to protect the circuit.
What is the maximum operating temperature for SA7.5A-E3/54?
The SA7.5A-E3/54 has a maximum junction temperature (TJ max) of +175 °C and an operating junction/storage temperature range of –55 °C to +175 °C. This wide range supports deployment in under-hood automotive locations, industrial motor drives, and outdoor telecom enclosures where ambient temperatures exceed 105 °C and thermal cycling is frequent. Derating curves in the datasheet guide power usage above 25 °C ambient.
SA7.5A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.5V
- Voltage - Breakdown (Min):
- 8.33V
- Voltage - Clamping (Max) @ Ipp:
- 12.9V
- Current - Peak Pulse (10/1000µs):
- 38.8A
- 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)
SA7.5A-E3/54 FAQ
1.How can I place an order for SA7.5A-E3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA7.5A-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 SA7.5A-E3/54 reliable?
The price and inventory of SA7.5A-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 SA7.5A-E3/54 is usually 5 days.
3.What payment methods are accepted for SA7.5A-E3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA7.5A-E3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA7.5A-E3/54?
SA7.5A-E3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA7.5A-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 SA7.5A-E3/54?
For technical support, including SA7.5A-E3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA7.5A-E3/54 requirements.
6.How does Aetrix verify that SA7.5A-E3/54 is sourced from the original manufacturer or authorized distributors?
All SA7.5A-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 SA7.5A-E3/54 meets industry standards.
7.What is the process for return or replacement of SA7.5A-E3/54?
All SA7.5A-E3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA7.5A-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 SA7.5A-E3/54 part is unused and in its original packaging.
Return procedure for SA7.5A-E3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA7.5A-E3/54 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 …
