Nombre de broches
Sets the number of winding taps and the board footprint. Parts with different pin counts are not drop-in replacements for each other.
Gamme de transformateurs
Audio Transformers
Audio transformers match impedance and provide galvanic isolation on audio lines, breaking the ground loops that cause hum. Filter by pin count, AC impedance, turns ratio and withstand voltage, then check insertion loss, frequency response and the mounting footprint before you commit to a part.
Recherche et sélection de références
Trouver des références pour Audio Transformers
Le tableau utilise les fiches produits actuelles du site anglophone, les critères de sélection publiés et les liens vers les fichiers techniques propres à chaque référence.
* Colonnes Image et Référence figées · faites glisser horizontalement pour consulter toutes les caractéristiques
| Image | Fiche technique | Comparer | Téléchargements |
Broches
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L/l/H (mm×mm×mm)
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Impédance AC PRI:SEC (Ω)
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Résistance DC PRI:SEC (Ω)
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Rapport de transformation (PRI:SEC)
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Mode de montage
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Essai diélectrique (AC)
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Perte d'insertion (dB)
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Perte d'insertion (dB)
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| Image | Référence | Fiche technique | Comparer | Téléchargements | Broches | L/l/H (mm×mm×mm) | Impédance AC PRI:SEC (Ω) | Résistance DC PRI:SEC (Ω) | Rapport de transformation (PRI:SEC) | Mode de montage | Essai diélectrique (AC) | Perte d'insertion (dB) | Perte d'insertion (dB) | Échantillon |
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WHTT5005 | SPEC | 5 broches | 14.5*8.2*5 | 600：600 | 65：75 | 1±2% | SMD | 1000V | — | 1.3 |
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WHTT5003 | SPEC | 5 broches | 14.5*8.5*5.08 | Aucun | 45：55 | 1±1% | SMD | 500V | - | — |
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WHTT5002 | SPEC | 5 broches | 14.5*8.5*5.08 | 600：460 | 90.5：112：102 | 1±1% | SMD | 500V | - | — |
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WHTT5001 | SPEC | 5 broches | 14.5*8.2*4.8 | 600：365 | 138：130 | 1±1% | SMD | 1000V | 2.8 | — |
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WHTT5000 | SPEC | 5 broches | 14.5*8.2*4.8 | 300:600 | 120：250 | 2±1% | SMD | 1000V | - | — |
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By pin count
Choose an audio transformer by pin count
Pin count sets the winding taps and the board footprint, so start from the circuit you have.
Comment sélectionner
Selecting an audio transformer in four steps
Work from the source and load impedance outward to the mechanical constraints.
- 01
Fix the impedance on both sides
State the source impedance, load impedance, signal level and frequency range, and whether the stage has to convert balanced to unbalanced.
- 02
Derive the turns ratio
The impedance ratio is the square of the turns ratio. A 600:600 part is 1:1; stepping 600 down to 150 ohm needs a 2:1 turns ratio.
- 03
Check level and isolation
Confirm the maximum signal level the core can carry without saturating, then confirm the dielectric strength the safety case demands.
- 04
Confirm the footprint
Match pin count, pin pitch and height against the board, then verify insertion loss and frequency response on your own hardware.
Parameters
What the audio transformer datasheet values mean
Each figure is measured under stated conditions; read the conditions with the number.
AC impedance
Quoted for a stated frequency, commonly 1 kHz. Read the test frequency with the value; the same part reads differently elsewhere in the band.
Turns ratio
Fixes the impedance transformation and the voltage relationship between windings. Impedance ratio equals turns ratio squared.
DC resistance
Winding copper loss. It adds to insertion loss and matters most when the winding also carries a bias current.
Dielectric strength
The isolation the barrier withstands under the stated test. Choose against the safety requirement, not against the working voltage alone.
Insertion loss
Signal lost through the transformer at the stated frequency. Compare candidates at the same frequency or the numbers do not mean the same thing.
Comparer
Audio transformer families side by side
Pin count and impedance separate the families more than package size does.
Revenir au sélecteur ↑| Broches | Références | L/l/H (mm×mm×mm) | Impédance AC PRI:SEC (Ω) | Résistance DC PRI:SEC (Ω) | Rapport de transformation (PRI:SEC) | Mode de montage | Essai diélectrique (AC) | Perte d'insertion (dB) | Perte d'insertion (dB) | Action |
|---|---|---|---|---|---|---|---|---|---|---|
| 4 broches | 17 | 11*8.2*5, 14*8*4.4, 14.5*8.2*5, 14*8.15*5.08, 15.2*8.2*5, 15.2*8*5.08, 15.2*8.2*4.9, 15.6*8.5*5, 18.5*5.08*4.6, 18.2*8.5*4.6, 20.9*8.5*4.5, 20.5*8.5*4.5 | 600：287, 600：290, 600：301, 600：346, 600：400, 600：600, 20000：20000 | 140：170, 105：105, 48：42, 160：135, 157：146, 73：73, 150：150, 160：133, 118：140, 62：3.2, 155：144, 180：160, 141：171, 2370：2820 | 1±1%, 1±2%, 1±3%, 6±1% | SMD | 1000V, 1250V, 1500V, 1650V | 1, 1.3±0.5, 1.5, 2.9±0.1, 3.3±0.2, 3.3±0.25, 3.5, 3.85, -, 2.3 | Non spécifié | Filtrer → |
| 5 broches | 5 | 14.5*8.2*5, 14.5*8.2*4.8, 14.5*8.5*5.08 | 600：600, 600：365, 600：460, 300:600, Aucun | 120：250, 138：130, 90.5：112：102, 45：55, 65：75 | 1±1%, 1±2%, 2±1% | SMD | 500V, 1000V | 2.8, -, Non spécifié | 1.3, Non spécifié | Filtrer → |
| 6 broches | 6 | 13.2*8.2*5, 13.5*9.5*7.5, 13.5*10.0*7.50, 14*8*4.4, 15.2*9.0*7.5 | 600：316, 600：412, 600：430, 10000：10000, Aucun | 155：150, 115：115, 30：38, 50：50, 170: 170, 1620:1620 | 1±1%, 1±2%, - | SMD, DIP | 1200V, 1250V, 1500V, 3750V, 3880V, 4600V | 2, 3.0±0.25, 4.5, - | Non spécifié | Filtrer → |
Analyse de l’application
Where audio transformers are used
Confirm line level, balanced wiring and the impedance ratio the circuit expects.
Professional audio and broadcast
- Confirm line level, balanced wiring and the impedance ratio, then check insertion loss and frequency response across the audio band.
Intercom and paging systems
- Long runs pick up ground noise. Verify the isolation rating and that the core handles the maximum drive level without saturating.
Industrial and instrumentation audio
- Check the dielectric strength against the safety case, and confirm the operating temperature range covers the enclosure.
Consumer audio interfaces
- Height and footprint usually decide. Confirm the pin pitch and that frequency response holds at the levels the interface actually uses.
Documents
Audio transformer datasheets and drawings
Datasheets carry the tested impedance, frequency response and recommended footprint.
Affichage de jeux de fichiers disponibles représentatifs. Recherchez un SKU précis.
- 28
- Fiches techniques PDF répertoriées
- 25
- Jeux de fichiers 3D répertoriés
- 26
- Empreintes PCB répertoriées
Le contenu produit publié par VOOHU est vérifié par son équipe technique. Les caractéristiques, les téléchargements et les informations d’assistance technique sont associés à des références précises afin que vous puissiez les vérifier avant de demander des échantillons ou un devis.
Présentation de la catégorie
What an audio transformer does, and why 600 ohm
Two questions come up on almost every audio transformer enquiry: what the part is actually for, and why so many datasheets quote 600 ohm.
Discuter d’une nouvelle conception
Contacter l’équipe FAE pour une évaluation de remplacement.
Vous avez déjà une référence ? Demander des échantillons ou un devis.
What it does
An audio transformer couples a signal magnetically between two windings. Nothing conducts across the barrier, so a ground loop between two pieces of equipment cannot push current through the signal path. That is what removes hum. The second job is impedance matching, so a source drives a load it can actually deliver power into.
Why 600 ohm keeps appearing
600 ohm is a telephone and broadcast line convention rather than a law of physics. It became the reference impedance for balanced audio lines, so parts and equipment were built around it. A 600:600 transformer is a 1:1 isolation part; a 600:150 part steps impedance down by four, which is a 2:1 turns ratio.
How to wire and verify it
Identify the primary, secondary and any centre tap from the datasheet pinout, not from the physical symmetry of the package. Keep the balanced pair symmetric on the board. Then measure insertion loss and frequency response on your own hardware, because the published curve is taken under the datasheet's stated source and load.
FAQ
Audio transformer questions engineers ask
Answers cover function, the 600 ohm convention, wiring and interchange limits.
What does an audio transformer actually do?
It couples an audio signal magnetically between two windings, so the two sides share no electrical connection. That breaks ground loops, which is the usual cure for hum between two pieces of equipment. It also transforms impedance, letting a source drive a load it can deliver power into, and it can convert between balanced and unbalanced wiring.
Why do so many audio transformers say 600 ohm?
600 ohm is a convention inherited from telephone and broadcast line practice, not a physical constant. It became the reference impedance for balanced audio lines, so equipment and parts were designed around it. A 600:600 part is a 1:1 isolation transformer. If the datasheet quotes a different pair, read the test frequency alongside it.
How do I work out the turns ratio I need?
Impedance ratio is the square of the turns ratio. To go from 600 ohm to 150 ohm the impedance ratio is four, so the turns ratio is two to one. Fix the source and load impedance first, then derive the ratio, then confirm the part carries your maximum signal level without the core saturating.
Does pin count tell me anything useful?
Yes. Pin count sets how many winding taps are brought out and therefore how the part can be wired: whether a centre tap is available, whether both windings are fully accessible, and how it sits on the board. Parts with different pin counts are not interchangeable even when the electrical ratings look similar.
Can I swap in a transformer with the same impedance?
Not automatically. Matching impedance is necessary but not sufficient. Compare turns ratio, DC resistance, dielectric strength, maximum level and insertion loss, and check the pinout and footprint. After any change, re-measure frequency response and distortion on your own board rather than relying on the datasheet curve.
Will an audio transformer affect sound quality?
It will have some effect. Every transformer has insertion loss, a finite bandwidth and a level above which the core saturates and distortion rises. How audible that is depends on the part and on how hard you drive it. Compare candidates at the same test frequency and level, and verify on your own hardware.
What isolation rating should I ask for?
Choose against the safety requirement that applies to the equipment, not against the normal working voltage. The datasheet dielectric strength is measured under a stated test condition, so read the condition with the number. If the design has to meet a specific standard, tell us which one and our engineers will confirm which parts qualify.
How do I request audio transformer samples or a quote?
If you already have a complete part number, send the part number, quantity, delivery region and the date you need it. If you are still selecting, send the source and load impedance, signal level, frequency range and any isolation requirement, and a sales engineer will shortlist candidates before you commit to samples.
Assistance technique
Poursuivre après la sélection du produit
Envoyez la référence candidate et la condition à examiner. Vous pourrez demander des échantillons une fois la sélection précisée ; les questions commerciales peuvent être abordées au cours du même échange technique.
- 1Références sélectionnées
- 2Analyse technique
- 3Demande d’échantillons
- 4Échange commercial
Pour une étude de remplacement
- Référence d’origine et fiche technique
Indiquez la révision du document
- Conditions de fonctionnement
Température, tension d’isolement et conditions de courant PoE prises comme référence
- Contraintes du boîtier
Nombre de broches, pas et espacement entre les rangées de broches
- Phase du projet et volume annuel
Pour faciliter la priorisation des échantillons et de l’évaluation
- Date d’analyse souhaitée
Date à laquelle vous avez besoin de références candidates et d’un comparatif des différences
L’analyse technique identifie les références candidates et explique les différences.
Pour des échantillons et un devis
- Références candidates
Issues du sélecteur ou de l’analyse technique
- Quantité et phase du projet
Prototypage / présérie / production
- Date de livraison requise
Précisez séparément les délais des échantillons et de la production
- Documentation requise
Documents de conformité, déclarations de matières ou rapports de tiers
La quantité d’échantillons, le délai et le coût dépendent de la phase du projet et de la référence. L’équipe commerciale répond les jours ouvrés.
Études de remplacement publiées
Comparatif de sélection de transformateurs push-pull : VOOHU WHST06Q02E0 et Würth Elektronik 750316819
Voir toutes les alternatives
