My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SA14-E3/73
- Part No.:
- SA14-E3/73
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA14-E3/73.pdf
- Description:
- TVS DIODE 14VWM 25.8VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,727
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA14-E3/73 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for primary overvoltage protection of DC power rails and signal lines. It features a 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 21.6 A peak pulse current (IPPM) under 10/1000 μs waveform, 500 W peak pulse power (PPPM), and clamps to ≤23.2 V at rated surge. It is widely deployed in automotive body control modules to protect microcontroller I/O and LIN bus transceivers.
For engineers reviewing the SA14-E3/73 datasheet, SA14-E3/73 pinout, SA14-E3/73 application, or SA14-E3/73 equivalent, this page delivers verified electrical parameters, JEDEC-compliant packaging details, AEC-Q101 qualification status, clamping behavior under standardized surge waveforms, and direct alternatives with documented parameter divergence - all specific to the SA14-E3/73 variant.
Technical Context
The SA14-E3/73 operates as a silicon avalanche diode with glass-passivated junction, optimized for fast response (<1 ps) to transient overvoltages. Its uni-directional polarity enables integration into DC-biased circuits where reverse conduction must be blocked until clamping threshold is exceeded.
It complies with AEC-Q101 stress testing for automotive use and supports soldering per J-STD-002/JESD 22-B102. The device exhibits a +0.014 %/°C temperature coefficient of VBR, enabling stable clamping across -55 °C to +175 °C operating junction range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - Maximum continuous reverse working voltage before significant leakage; defines safe DC bias margin. |
| VBR (min/max) | 15.6 V / 17.2 V at IT = 1 mA - Confirmed avalanche onset range; ensures predictable turn-on during transients. |
| IPPM | 21.6 A - Peak surge current survivable under 10/1000 μs waveform; determines minimum trace width and fuse coordination. |
| VC | ≤23.2 V at IPPM - Clamped voltage seen by protected IC; must stay below downstream component absolute maximum rating. |
| PPPM | 500 W - Peak pulse power handling capacity; validates suitability for ISO 7637-2 Pulse 1/2a/5a automotive transients. |
| TJ max | +175 °C - Maximum junction temperature; supports under-hood placement without derating in most thermal environments. |
| Leakage (ID) | ≤1.0 μA at VWM - Ultra-low reverse leakage preserves battery life in always-on automotive circuits. |
Pinout & Package
Package: DO-204AC (DO-15), axial leaded, molded epoxy case meeting UL 94 V-0. Matte tin-plated leads, RoHS-compliant, JESD 201 Class 1A whisker tested. Cathode indicated by color band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / low-side connection | Connected to ground or lower-potential node; defines reference for clamping action. |
| Cathode | Reverse-biased terminal / high-side connection | Connected to protected line; avalanche conduction occurs when cathode-to-anode voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enables stable, repeatable avalanche characteristics and long-term reliability under repeated surge stress. |
| 500 W peak pulse power (10/1000 μs) | Supports robust protection against load dump and inductive switching events common in 12 V automotive systems. |
| AEC-Q101 qualified | Validated for automotive-grade operation including temperature cycling, humidity bias, and mechanical shock per JEDEC standards. |
| Low incremental clamping resistance | Ensures minimal voltage overshoot beyond VC during fast-rising transients (e.g., ESD or relay bounce). |
| Matte tin plating, J-STD-002 compliant | Guarantees reliable solder wetting and intermetallic formation on PCBs using standard reflow or wave processes. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V supply rail and LIN bus lines in BCM against load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed between power rail and ground, triggered within picoseconds of overvoltage onset. Use Value: Limits rail voltage to ≤23.2 V during 100 V/50 ms load dump pulses, preventing damage to MCU and transceiver ICs. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Front-end TVS placed upstream of optocoupler input, absorbing energy before isolation barrier. Use Value: Withstands repeated 1 kV/500 A surge events per IEC 61000-4-5 Level 4, extending system uptime in factory environments. |
| Consumer Appliance Motor Drive Board | Telecom Power Supply Input Stage |
Use Scenario: Safeguarding microcontroller GPIOs connected to brushed DC motor feedback lines subject to back-EMF spikes. IC Role / Device Role / Timing Role: Localized suppression at motor interface connector, minimizing trace inductance impact on clamping speed. Use Value: Clamps 40 V inductive kickback to <23.2 V within <1 ns, preserving GPIO integrity without external RC snubbers. |
Use Scenario: Secondary-side transient suppression on 48 V telecom rectifier output feeding baseband processing boards. IC Role / Device Role / Timing Role: Final-stage overvoltage guard before point-of-load regulators, complementing upstream MOVs. Use Value: Provides precise 23.2 V clamping ceiling with <1 μA leakage, avoiding regulator dropout while maintaining efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ14A-E3/5T | Same VWM (14 V), but SMA package (DO-214AC); 23.2 V VC, 21.6 A IPPM; surface-mount only. | Requires PCB redesign for SMT assembly; unsuitable for through-hole legacy designs. | Select when board space is constrained and automated placement is available. |
| 1.5KE14A | Higher PPPM (1500 W), same VWM/VC, but larger DO-201AD package; 23.2 V VC, 64.8 A IPPM. | Overqualified for 500 W needs; higher junction capacitance may affect high-speed signal lines. | Select only when legacy 1.5KE footprint is fixed and higher surge margin is required. |
Compared with SMAJ14A-E3/5T and 1.5KE14A, the SA14-E3/73 offers identical clamping performance in a cost-optimized, through-hole DO-15 package with AEC-Q101 validation - making it the preferred choice for new automotive and industrial through-hole designs requiring proven reliability and ease of manual or wave-solder assembly.
Availability
SA14-E3/73 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and telecom power supply designs requiring stable component supply, long-lifecycle support, and AEC-Q101 compliance.
Supply support for SA14-E3/73 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive qualification.
The SA14-E3/73 belongs to Vishay's TRANSZORB® family of TVS diodes, engineered specifically for robust, standardized transient suppression in harsh environments - especially automotive, industrial, and telecom infrastructure applications.
FAQ
What is the clamping voltage of the SA14-E3/73 under full-rated surge current?
The SA14-E3/73 clamps to a maximum of 23.2 V when subjected to its rated 21.6 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per Figure 7 in Vishay Document 88378 and represents the upper limit of voltage imposed on the protected circuit during worst-case transient events.
Is the SA14-E3/73 suitable for automotive applications?
Yes, the SA14-E3/73 is AEC-Q101 qualified and explicitly rated for automotive use. Its construction - including glass-passivated junction, DO-204AC package with matte tin leads, and operation up to +175 °C junction temperature - meets the environmental and reliability requirements defined in the AEC-Q101 stress test standard.
What does the "E3/73" suffix indicate in SA14-E3/73?
The "E3" denotes RoHS-compliant, commercial-grade packaging per Vishay's ordering nomenclature; "73" specifies the packaging format - in this case, 73 mm tape-and-reel with 2500 units per reel. This matches Vishay's standard DO-15 reel configuration for automated assembly.
How does the SA14-E3/73 differ from bi-directional variants like SA14CA?
The SA14-E3/73 is uni-directional, meaning it blocks reverse current until VBR is exceeded in the reverse direction, while conducting forward current like a standard diode. In contrast, SA14CA is bi-directional with symmetrical clamping in both polarities - making SA14-E3/73 appropriate for DC-biased lines, and SA14CA for AC or floating signal paths.
What is the maximum leakage current of the SA14-E3/73 at its stand-off voltage?
The SA14-E3/73 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated 14 V stand-off voltage (VWM) and 25 °C ambient temperature. This ultra-low leakage ensures minimal power loss in battery-powered or always-on systems where quiescent current matters.
SA14-E3/73 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-204AC, DO-15, Axial
- Series:
- TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 25.8V
- Current - Peak Pulse (10/1000µs):
- 19.4A
- 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)
SA14-E3/73 FAQ
1.How can I place an order for SA14-E3/73 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA14-E3/73 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 SA14-E3/73 reliable?
The price and inventory of SA14-E3/73 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA14-E3/73 is usually 5 days.
3.What payment methods are accepted for SA14-E3/73?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA14-E3/73 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA14-E3/73?
SA14-E3/73 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA14-E3/73 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 SA14-E3/73?
For technical support, including SA14-E3/73 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA14-E3/73 requirements.
6.How does Aetrix verify that SA14-E3/73 is sourced from the original manufacturer or authorized distributors?
All SA14-E3/73 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 SA14-E3/73 meets industry standards.
7.What is the process for return or replacement of SA14-E3/73?
All SA14-E3/73 units undergo pre-shipment inspection (PSI). If there is an issue with SA14-E3/73, 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 SA14-E3/73 part is unused and in its original packaging.
Return procedure for SA14-E3/73:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA14-E3/73 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 …
