My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SA14CHE3/54
- Part No.:
- SA14CHE3/54
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-204AC, DO-15, Axial
- Datasheet:
-
SA14CHE3/54.pdf
- Description:
- TVS DIODE 14VWM 25.8VC DO204AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,074
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SA14CHE3/54 from Vishay General Semiconductor is a uni-directional Transient Voltage Suppressor (TVS) diode in DO-204AC (DO-15) package, designed for circuit-level overvoltage protection. It features a 14 V stand-off voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 500 W peak pulse power (10/1000 μs), clamping voltage of 23.2 V at 21.6 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SA14CHE3/54 datasheet, SA14CHE3/54 pinout, SA14CHE3/54 application, or SA14CHE3/54 equivalent, this device is selected for robust ESD and surge protection on DC power rails and signal lines where fast response (<1 ns), low clamping ratio, and high surge current tolerance are required in harsh environments.
Technical Context
The SA14CHE3/54 operates as a silicon avalanche diode with glass-passivated junction, enabling stable breakdown behavior under repetitive transient stress. Its uni-directional polarity uses a cathode band marking and supports forward conduction up to 70 A IFSM (10 ms half-sine).
It delivers 500 W peak pulse power per 10/1000 μs waveform at TA = 25 °C, with thermal derating above 25 °C and maximum junction temperature of 175 °C. Clamping performance is characterized by VC = 23.2 V at IPPM = 21.6 A, yielding a clamping ratio (VC/VBR) of ~1.48 - indicating tight voltage control during surge events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 14 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin. |
| VBR (Breakdown Voltage) | 15.6–17.2 V at 1 mA - Avalanche onset range; ensures predictable turn-on during transients without premature conduction. |
| VC (Clamping Voltage) | 23.2 V at 21.6 A - Peak voltage seen by protected circuit during 500 W surge; limits downstream stress. |
| PPPM | 500 W (10/1000 μs) - Surge energy handling capacity; suitable for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 3/4. |
| ID (Leakage Current) | 1.0 μA max at 14 V - Negligible standby power loss and minimal impact on high-impedance sensing nodes. |
| TJ max | 175 °C - Enables operation in under-hood automotive environments and industrial enclosures without thermal derating penalties. |
| AEC-Q101 Qualified | Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing - required for ECUs, body control modules, and ADAS sensors. |
Pinout & Package
Package: DO-204AC (DO-15), axial-leaded, molded epoxy case meeting UL 94 V-0. Matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. HE3 suffix denotes AEC-Q101 qualification and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / Cathode-referenced protection node | Connected to protected line (e.g., +12 V rail); conducts during positive transients when cathode is held at higher potential. |
| Cathode | Reference terminal / Polarity marker | Marked with color band; tied to system ground or lower-potential reference to enable clamping of positive surges to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift in automotive/industrial environments. |
| 500 W peak pulse power (10/1000 μs) | Withstands repeated load-dump and inductive switching transients without degradation - validated per ISO 7637-2. |
| AEC-Q101 qualification | Meets automotive reliability requirements including 1000-cycle temperature cycling and 1000-hour HTOL - suitable for safety-critical ECUs. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD >15 kV contact), improving protection margin for sensitive ICs. |
| Solderable per J-STD-002/JESD 22-B102 | Guarantees reliable lead wetting and joint integrity during wave/reflow assembly - critical for high-volume automotive manufacturing. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V supply input of BCM against load dump (ISO 7637-2 Pulse 5a) and alternator ripple. IC Role / Device Role: Primary clamping device on main power rail, placed upstream of DC/DC converter input. Use Value: Limits transient voltage to ≤23.2 V, preventing damage to 28 V-rated input stages while maintaining <1 μA leakage at nominal 14 V. |
Use Scenario: Safeguarding 24 V digital input channels of PLC I/O modules from field-wiring induced surges (IEC 61000-4-5 Level 3). IC Role / Device Role: Front-end TVS on optocoupler input side, shunting surge current to common ground. Use Value: Clamps 500 W transients within 1 ns, preserving signal integrity and avoiding false triggering of input logic. |
| Automotive Camera Power Rail | Consumer Appliance Motor Driver Supply |
Use Scenario: Shielding 5 V/12 V bias rails of rear-view camera modules from battery line transients during ignition and jump-start events. IC Role / Device Role: Uni-directional TVS between camera power pin and chassis ground, co-located with bulk capacitance. Use Value: Withstands 70 A non-repetitive forward surge (IFSM), surviving cranking-induced voltage spikes without failure. |
Use Scenario: Suppressing inductive kickback from brushed DC motor commutation in washing machine control boards. IC Role / Device Role: Parallel-connected TVS across motor terminals, diverting energy away from H-bridge MOSFETs. Use Value: 500 W rating handles repetitive 10/1000 μs pulses from motor switching, reducing MOSFET failure rate by >90% in accelerated life tests. |
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-E3/52 (Vishay) | Same VWM (14 V), but SMA package (DO-214AC); lower PPPM (400 W), higher VC (25.1 V at 16.6 A). | Surface-mount alternative for space-constrained PCBs; less robust for high-energy load dump. | Select SMAJ14A-E3/52 only if board layout mandates SMD and surge energy is limited to ≤400 W. |
| P6KE15A (ON Semiconductor) | Higher VWM (15 V), same DO-15 package; 600 W PPPM, but wider VBR range (16.7–18.5 V) and higher VC (24.4 V at 20.5 A). | Marginally higher clamping voltage reduces protection margin for 15 V-tolerant circuits; better for 15 V systems. | Choose P6KE15A when protecting 15 V rails where tighter VWM tolerance is acceptable and 600 W headroom is needed. |
Compared with SA14CHE3/54, SMAJ14A-E3/52 trades package compatibility for reduced surge capability, while P6KE15A offers higher power but looser voltage tolerance - making SA14CHE3/54 optimal for 14 V automotive power rails requiring AEC-Q101 compliance and precise clamping.
Availability
SA14CHE3/54 is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and consumer appliance designs requiring stable component supply, AEC-Q101 validation, and high-reliability transient suppression.
Supply support for SA14CHE3/54 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 automotive, industrial, and computing applications.
The SAxxA series is engineered for robust transient suppression in harsh electrical environments, targeting automotive power distribution, industrial I/O, and consumer motor control where reliability under surge stress is mission-critical.
FAQ
What is the polarity configuration of the SA14CHE3/54?
The SA14CHE3/54 is a uni-directional Transient Voltage Suppressor with cathode marked by a color band on the DO-204AC package. It conducts in forward bias during positive transients and blocks reverse current up to 14 V, making it ideal for DC rail protection where ground-referenced clamping is required. This polarity ensures no conduction during normal 14 V operation while responding instantly to overvoltage events.
Is the SA14CHE3/54 qualified for automotive applications?
Yes, the SA14CHE3/54 carries the HE3 suffix, confirming full AEC-Q101 qualification per Vishay's documentation. It has passed high-temperature operating life, temperature cycling, unbiased highly accelerated stress testing, and ESD tests required for automotive electronic control units. Its 175 °C maximum junction temperature and robust surge handling make it suitable for under-hood and body electronics.
What is the clamping voltage of the SA14CHE3/54 at rated peak pulse current?
The SA14CHE3/54 clamps to 23.2 V at its rated peak pulse current of 21.6 A (10/1000 μs waveform). This value is measured per standard test conditions and reflects the maximum voltage imposed on the protected circuit during a 500 W transient event. The low clamping ratio (VC/VBR ≈ 1.48) ensures effective protection for 24 V-tolerant downstream components.
How does the SA14CHE3/54 compare to bi-directional TVS diodes like SA14CA?
The SA14CHE3/54 differs from bi-directional variants such as SA14CA by supporting only uni-directional protection - it clamps positive transients to ground but blocks negative excursions beyond −1.5 V (forward drop). SA14CA protects both polarities, making it suitable for AC lines or floating signals, whereas SA14CHE3/54 is optimized for grounded DC rails where polarity is fixed and leakage must be minimized.
What packaging and reel format is supplied for the SA14CHE3/54?
The SA14CHE3/54 is supplied in 13-inch diameter paper tape and reel format with a base quantity of 4000 units per reel (ordering code /54). The DO-204AC axial package is compatible with standard axial insertion equipment, and the HE3 suffix confirms RoHS compliance and JESD 201 Class 2 whisker resistance - essential for long-term reliability in automated manufacturing.
SA14CHE3/54 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-204AC (DO-15)
SA14CHE3/54 FAQ
1.How can I place an order for SA14CHE3/54 through Aetrix?
Please submit a Request for Quotation (RFQ) for SA14CHE3/54 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 SA14CHE3/54 reliable?
The price and inventory of SA14CHE3/54 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SA14CHE3/54 is usually 5 days.
3.What payment methods are accepted for SA14CHE3/54?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SA14CHE3/54 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SA14CHE3/54?
SA14CHE3/54 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SA14CHE3/54 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 SA14CHE3/54?
For technical support, including SA14CHE3/54 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SA14CHE3/54 requirements.
6.How does Aetrix verify that SA14CHE3/54 is sourced from the original manufacturer or authorized distributors?
All SA14CHE3/54 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 SA14CHE3/54 meets industry standards.
7.What is the process for return or replacement of SA14CHE3/54?
All SA14CHE3/54 units undergo pre-shipment inspection (PSI). If there is an issue with SA14CHE3/54, 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 SA14CHE3/54 part is unused and in its original packaging.
Return procedure for SA14CHE3/54:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SA14CHE3/54 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 …
